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Author SHA1 Message Date
54530ab103 Merge branch 'main-rc' into b3.1.0 2020-11-30 16:50:15 +01:00
6126780660 Merge branch 'main-rc' into b3.0.1 2020-11-30 16:45:00 +01:00
9b7f9b1be1 Merge branch 'main-rc' into b3.0.0 2020-11-30 16:42:35 +01:00
26c829d766 Merge branch 'main-rc' into b2.3.4 2020-11-30 16:38:04 +01:00
3fde5c5b55 Merge branch 'main-rc' into b2.3.3 2020-11-30 16:36:24 +01:00
3e5f546ebe Merge branch 'main-rc' into b2.3.2 2020-11-30 16:26:44 +01:00
9833a7d330 Merge branch 'main-rc' into b2.3.1 2020-11-30 16:25:23 +01:00
8f9155e578 Merge branch 'main-rc' into b2.3.0 2020-11-30 16:23:50 +01:00
9df1eac3c1 Merge branch 'main-rc' into b2.2.0 2020-11-30 15:46:45 +01:00
5ededf9be4 Merge branch 'main-rc' into b2.1.1 2020-11-30 15:16:57 +01:00
3e8774798a Merge branch 'main-rc' into b2.1.0 2020-11-30 15:13:43 +01:00
834794ad98 gotthard renamed binaries 2017-12-19 18:04:44 +01:00
56c504abbb Merge remote branch 'slsDetectorCalibration/2.3.4' into 2.3.4 2017-12-12 11:14:19 +01:00
4d6346e678 Merge remote branch 'slsDetectorCalibration/2.3.3' into 2.3.3 2017-12-12 11:14:15 +01:00
dc7e448759 Merge remote branch 'slsDetectorCalibration/2.3.2' into 2.3.2 2017-12-12 11:14:12 +01:00
e658cbacda Merge remote branch 'slsDetectorCalibration/2.3.1' into 2.3.1 2017-12-12 11:14:08 +01:00
1e6c6dea71 Merge remote branch 'slsDetectorCalibration/2.3' into 2.3 2017-12-12 11:14:05 +01:00
0e5d4d1d8e Merge remote branch 'slsDetectorCalibration/2.2' into 2.2 2017-12-12 11:14:01 +01:00
a2986784d3 Merge remote branch 'slsDetectorCalibration/2.1.1' into 2.1.1 2017-12-12 11:13:34 +01:00
975cbb576e Merge remote branch 'slsDetectorCalibration/2.1' into 2.1 2017-12-12 11:06:15 +01:00
e48a92d9cd Merge remote branch 'slsDetectorCalibration/2.0.5' into 2.0.5 2017-12-12 11:02:57 +01:00
befdcf7f36 Merge remote branch 'slsDetectorGui/2.3.4' into 2.3.4 2017-12-04 16:48:01 +01:00
02f5c472a8 Merge remote branch 'slsReceiverSoftware/2.3.4' into 2.3.4 2017-12-04 16:48:00 +01:00
75ed2cd2e4 Merge remote branch 'slsDetectorSoftware/2.3.4' into 2.3.4 2017-12-04 16:47:59 +01:00
3be045f9b6 Merge remote branch 'slsDetectorGui/2.3.3' into 2.3.3 2017-12-04 16:47:54 +01:00
8fae982802 Merge remote branch 'slsReceiverSoftware/2.3.3' into 2.3.3 2017-12-04 16:47:54 +01:00
128ec88b5f Merge remote branch 'slsDetectorSoftware/2.3.3' into 2.3.3 2017-12-04 16:47:52 +01:00
d5fc158330 Merge remote branch 'slsDetectorGui/2.3.2' into 2.3.2 2017-12-04 16:47:47 +01:00
864e6e4c81 Merge remote branch 'slsReceiverSoftware/2.3.2' into 2.3.2 2017-12-04 16:47:47 +01:00
343d96ff16 Merge remote branch 'slsDetectorSoftware/2.3.2' into 2.3.2 2017-12-04 16:47:46 +01:00
4142328437 Merge remote branch 'slsDetectorGui/2.3.1' into 2.3.1 2017-12-04 16:47:41 +01:00
6c797988c7 Merge remote branch 'slsReceiverSoftware/2.3.1' into 2.3.1 2017-12-04 16:47:41 +01:00
215c262981 Merge remote branch 'slsDetectorSoftware/2.3.1' into 2.3.1 2017-12-04 16:47:39 +01:00
081b809078 Merge remote branch 'slsDetectorGui/2.3' into 2.3 2017-12-04 16:47:35 +01:00
9263567cd8 Merge remote branch 'slsReceiverSoftware/2.3' into 2.3 2017-12-04 16:47:34 +01:00
58e90a85be Merge remote branch 'slsDetectorSoftware/2.3' into 2.3 2017-12-04 16:47:33 +01:00
025c836e25 Merge remote branch 'slsDetectorGui/2.2' into 2.2 2017-12-04 16:47:28 +01:00
5d5abae3f4 Merge remote branch 'slsReceiverSoftware/2.2' into 2.2 2017-12-04 16:47:28 +01:00
e2ad46386e Merge remote branch 'slsDetectorSoftware/2.2' into 2.2 2017-12-04 16:47:26 +01:00
308d44e452 Merge remote branch 'slsDetectorGui/2.1.1' into 2.1.1 2017-12-04 16:47:22 +01:00
69da61b1fb Merge remote branch 'slsReceiverSoftware/2.1.1' into 2.1.1 2017-12-04 16:47:22 +01:00
460168ce04 Merge remote branch 'slsDetectorSoftware/2.1.1' into 2.1.1 2017-12-04 16:47:21 +01:00
4e429c0d77 Merge remote branch 'slsDetectorGui/2.1' into 2.1 2017-12-04 16:45:34 +01:00
bf4fab549d Merge remote branch 'slsReceiverSoftware/2.1' into 2.1 2017-12-04 16:45:34 +01:00
f7705eb1da Merge remote branch 'slsDetectorSoftware/2.1' into 2.1 2017-12-04 16:45:32 +01:00
a2217e2066 Merge remote branch 'slsReceiverSoftware/2.0.5' into 2.0.5 2017-12-04 15:33:33 +01:00
aaa02706fc Merge remote branch 'slsDetectorSoftware/2.0.5' into 2.0.5 2017-12-04 15:31:52 +01:00
6a80bc5b54 new feature, set threshold without uploading trimbits 2017-06-27 13:00:38 +02:00
b9275646ad crazy amount of changes, both necessary and unnecessary;need to narrow down the real change later 2017-04-27 14:05:04 +02:00
9e2f2697c7 crazy amount of changes, both necessary and unnecessary;need to narrow down the real change later 2017-04-27 13:58:25 +02:00
b6b0df62b6 updaterev 2017-04-20 08:26:29 +02:00
0ba537e479 removed headersize compile error 2017-04-20 08:26:16 +02:00
75ddf535dc updaterev 2017-04-19 17:59:53 +02:00
b1de501bef updaterev 2017-04-19 17:59:46 +02:00
0f3a63f101 changed zmq default port starting at 40001 to be able to view in wireshark and removed headersize for warning 2017-04-19 17:42:38 +02:00
3b4b2d707f changes without ostringstream done 2017-04-19 10:17:39 +02:00
f405aa1733 split zmq_msg_t so its not reused 2017-04-19 10:17:30 +02:00
df0fdb7ecb changes without ostringstream done 2017-04-19 10:16:45 +02:00
91b7a87557 just started changin frm ostringstream 2017-04-18 15:32:01 +02:00
9468b9ca1e updaterev 2017-04-11 13:39:59 +02:00
d7982e178e updaterev 2017-04-11 13:39:53 +02:00
9cf5714a5b removing warnings shown from esrf debian 2017-04-11 13:39:35 +02:00
0c9ac8911a removing warnings shown from esrf debian 2017-04-11 13:39:28 +02:00
4730c8c0a9 updaterev 2017-04-11 13:31:49 +02:00
43efb8acfd removing warnings shown from esrf debian 2017-04-11 13:31:32 +02:00
6ecca8fcb0 updaterev 2017-04-11 09:03:26 +02:00
17cb63a57f updaterev 2017-04-11 09:03:19 +02:00
4f83fcb001 updaterev 2017-04-11 09:02:10 +02:00
ab94af6d29 removed verbose etc 2017-04-07 15:08:40 +02:00
7c725cc69b .c_str() must not access global variables from thread 2017-04-07 14:57:19 +02:00
f0198d2d2e alejandro's changes from ESRF 2017-04-07 14:50:17 +02:00
5ddccbdee4 changed all -lpthread to -pthread 2017-04-07 14:28:00 +02:00
8fb39b8c7e changed all -lpthread to -pthread 2017-04-07 14:27:27 +02:00
bd5293f4b1 changed all -lpthread to -pthread 2017-04-07 14:26:09 +02:00
b91180f5b2 changed all -lpthread to -pthread 2017-04-07 14:26:03 +02:00
7c3b5065a5 changed all -lpthread to -pthread 2017-04-07 14:25:09 +02:00
9aef802bea changed all -lpthread to -pthread 2017-04-07 14:24:49 +02:00
f7d85231f2 solved warnings except sscanf for uint64_t 2017-04-07 14:12:21 +02:00
5b3a911e8d solved warnings except sscanf for uint64_t 2017-04-07 14:11:34 +02:00
65f5e1c1ab strtok is not thread safe..used to set receiver udp ip etc to detector, fixed 2017-04-06 15:04:33 +02:00
839896c7e6 fixed the print file packet loss progress bug 2016-10-19 15:53:26 +02:00
4a7e246604 removed asking only 1 for framescaugh 2016-10-19 10:21:29 +02:00
7f293115c4 moved f_activate to receiver funcs from detectors funcs 2016-10-10 08:43:18 +02:00
f59f40a659 ask only 1 for frames caught for 9m 2016-10-10 08:41:03 +02:00
64fd82f92c fixed bug in gui that overwrites the individual sls file path values with the multi value, included a febl and febr temp read 2016-10-10 08:39:46 +02:00
cd232fd732 fixed bug in gui that overwrites the individual sls file path values with the multi value 2016-10-10 08:17:34 +02:00
172fa66b1f hotfix for memory leak in server 2016-08-18 11:57:36 +02:00
1017 changed files with 76974 additions and 48500 deletions

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@ -1,45 +0,0 @@
sudo: false
language: cpp
matrix:
include:
- os: linux
env: CONDA_PY=3.6
dist: trusty
install:
- sudo apt-get update
- ldd --version
- wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
- bash miniconda.sh -b -p $HOME/miniconda
- export PATH="$HOME/miniconda/bin:$PATH"
- rm -f miniconda.sh
- hash -r
- conda config --set always_yes yes --set changeps1 no
- conda config --add channels conda-forge
- conda config --add channels slsdetectorgroup
- conda update conda
- conda update --all
- conda install conda-build anaconda-client
# Useful for debugging any issues with conda
- conda info -a
# Replace dep1 dep2 ... with your dependencies
- conda create -q -n test-environment python=$CONDA_PY
- source activate test-environment
- conda-build .
script:
- echo "No test scripts to be run!"
deploy:
provider: script
script: find $HOME/miniconda/conda-bld/${TRAVIS_OS_NAME}-64 -name "*.tar.bz2" -exec anaconda -t $CONDA_TOKEN upload --force {} \;
on:
branch: developer

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@ -1,5 +1,5 @@
cmake_minimum_required(VERSION 2.8)
set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
set (CALIBRATE OFF)
option (USE_HDF5 "HDF5 File format" OFF)
@ -7,18 +7,13 @@ option (USE_TEXTCLIENT "Text Client" OFF)
option (USE_RECEIVER "Receiver" OFF)
option (USE_GUI "GUI" OFF)
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 6.0)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++98 -Wno-misleading-indentation")
else ()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++98")
endif ()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-misleading-indentation")
find_package(Qt4)
find_package(Qwt 6)
find_package(CBF)
find_package(Doxygen)
# find_package(PNG REQUIRED)
find_package(PNG REQUIRED)
if (USE_HDF5)
find_package(HDF5 1.10 COMPONENTS CXX)
@ -36,10 +31,8 @@ endif (USE_TEXTCLIENT)
if (USE_RECEIVER)
add_subdirectory(slsReceiverSoftware)
add_subdirectory(manual/manual-api)
endif (USE_RECEIVER)
if (USE_GUI)
if (QT4_FOUND AND QWT_FOUND)
add_subdirectory(slsDetectorGui)

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@ -19,12 +19,11 @@ RECEIVERDIR = $(LIBRARYRXRDIR)
CALWIZDIR = $(WD)/calibrationWizards
MANDIR = $(WD)/manual
CALIBDIR = $(WD)/slsDetectorCalibration
MANAPIDIR = $(MANDIR)/manual-api
TABSPACE := "\t"
INCLUDES=-I. -I$(LIBRARYDIR)/commonFiles -I$(LIBRARYDIR)/slsDetector -I$(LIBRARYDIR)/usersFunctions -I$(LIBRARYDIR)/multiSlsDetector -I$(LIBRARYDIR)/slsDetectorUtils -I$(LIBRARYDIR)/slsDetectorCommand -I$(LIBRARYDIR)/slsDetectorAnalysis -I$(LIBRARYDIR)/slsReceiverInterface -I$(LIBRARYRXRDIR)/include -I$(LIBRARYDIR)/threadFiles -I$(LIBRARYDIR)/sharedMemory -I$(ASM)
INCLUDES=-I. -I$(LIBRARYDIR)/commonFiles -I$(LIBRARYDIR)/slsDetector -I$(LIBRARYDIR)/usersFunctions -I$(LIBRARYDIR)/multiSlsDetector -I$(LIBRARYDIR)/slsDetectorUtils -I$(LIBRARYDIR)/slsDetectorCommand -I$(LIBRARYDIR)/slsDetectorAnalysis -I$(LIBRARYDIR)/slsReceiverInterface -I$(LIBRARYRXRDIR)/include -I$(LIBRARYDIR)/threadFiles -I$(ASM)
INCLUDESRXR += -I. -I$(LIBRARYRXRDIR)/include -I$(CALIBDIR) -I$(ASM)
#LIBFLAGRXR +=
@ -80,7 +79,6 @@ slsReceiver_static: receiver
receiver: #libreceiver
# cd $(RECEIVERDIR) && $(MAKE) receiver FLAGS='$(FLAGS)' DESTDIR='$(BINDIR)' LIBS='$(LDFLAGRXR)' INCLUDES='$(INCLUDESRXR)' LIBDIR='$(LIBDIR)'
cd $(RECEIVERDIR) && $(MAKE) FLAGS='$(FLAGS)' DESTDIR='$(BINDIR)' LIBS='$(LDFLAGRXR)' INCLUDES='$(INCLUDESRXR)' LIBDIR='$(LIBDIR)'
cd $(MANAPIDIR) && $(MAKE) slsMultiReceiver
@echo ""
@echo "#######################################"
@echo "# Back in slsDetectorPackage Makefile #"
@ -153,7 +151,6 @@ clean:
cd $(DOCDIR) && rm -rf *
rm -rf slsDetectorPackageDocs;
rm -rf $(DETAILDOC)
rm -rf $(MANAPIDIR)/slsMultiReceiver
#install_lib:

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@ -2,12 +2,12 @@
Detailed documentation can be found on the [official site.](https://www.psi.ch/detectors/users-support)
### Binaries
Documentation to obtain the binaries via the conda package is available for [lib](https://github.com/slsdetectorgroup/sls_detector_lib) and [gui](https://github.com/slsdetectorgroup/sls_detector_gui)
Documentation to obtain the binaries via the conda package is available [here.](https://github.com/slsdetectorgroup/sls_detector_software)
### Source code
One can also obtain the source code from this repository and compile while realizing the setup dependencies as required.
```
git clone https://github.com/slsdetectorgroup/slsDetectorPackage.git
git clone https://github.com/slsdetectorgroup/slsDetectorPackage.git --branch 3.1.0
```
#### Setup dependencies
@ -19,7 +19,7 @@ Requirements: Qt 4.8 and Qwt 6.0
```
If either of them does not exist, the GUI client will not be built.
* Advanced user Calibration wizards<br>
* Calibration wizards<br>
Requirements: ROOT
```
export ROOTSYS=/usr/local/root-5.34
@ -43,10 +43,6 @@ Usage: [-c] [-b] [-h] [-d HDF5 directory] [-j]<br>
* -r: Build/Rebuilds only receiver<br>
* -g: Build/Rebuilds only gui<br>
* -j: Number of threads to compile through<br>
* -e: Debug mode
Basic Option:
./cmk.sh -b
For only make:
./cmk.sh
@ -87,5 +83,5 @@ After compiling, the libraries and executables will be found at `bin` directory
```
$ ls bin/
gui_client libSlsDetector.a libSlsDetector.so libSlsReceiver.a libSlsReceiver.so
sls_detector_acquire sls_detector_get slsDetectorGui sls_detector_help sls_detector_put slsReceiver slsMultiReceiver
sls_detector_acquire sls_detector_get slsDetectorGui sls_detector_help sls_detector_put slsReceiver
```

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@ -1,508 +1,353 @@
SLS Detector Package 4.0.0 released on 27.09.2018
SLS Detector Package 3.1.0 released on 2018-03-12
=================================================
INTRODUCTION
This document describes the differences between 4.0.0 and 3.1.4 releases.
This document describes the differences between 3.1.0 and 3.0.0 releases.
Download
--------
The conda package of the binaries can be downloaded from
The Source Code (Default C++ API):
https://github.com/slsdetectorgroup/slsDetectorPackage
The Conda Lib Package:
https://github.com/slsdetectorgroup/sls_detector_lib
The Conda GUI Package:
https://github.com/slsdetectorgroup/sls_detector_gui
The Python Interface (including the package):
https://github.com/slsdetectorgroup/sls_detector
https://github.com/slsdetectorgroup/sls_detector_software.git
The Python interface to the software package (including the package) is at
Documentation
-------------
https://github.com/slsdetectorgroup/sls_detector.git
Manual (HTML & PDF):
https://www.psi.ch/detectors/documentation
slsDetectorPackage/manual/docs/
Command Line Documentation:
Manual (both HTML and pdf versions) are provided in
manual/docs/
Documentation from Source Code can be found for the Command Line and C++ API in
html:
manual/docs/html/slsDetectorClientDocs/index.html
manual/docs/pdf/slsDetectorClientDocs.pdf
C++ API Documentation:
manual/docs/html/slsDetectorUsersDocs/index.html
pdf:
manual/docs/pdf/slsDetectorClientDocs.pdf
manual/docs/pdf/slsDetectorUsersDocs.pdf
C++ API Example:
manual/manual-api/mainClient.cpp
manual/manual-api/mainReceiver.cpp
Python API Documentation:
https://slsdetectorgroup.github.io/sls_detector/
Further Documentation:
https://www.psi.ch/detectors/users-support
Documentation to the python API is available at
https://slsdetectorgroup.github.io/sls_detector/
Example including binaries for detector and receiver user classes can be found in
manual/manual-api
Support
-------
User documentation can also be accessed directly at this location:
General Software related:
dhanya.thattil@psi.ch
anna.bergamaschi@psi.ch
Python related:
erik.frojdh@psi.ch
https://www.psi.ch/detectors/users-support
If you have any software related questions or comments, please send them to:
dhanya.thattil@psi.ch
anna.bergamaschi@psi.ch
If you have any python related questions or comments, please send them to:
erik.frojdh@psi.ch
CONTENTS
1. Firmware Requirements
2. Changes in User Interface
3. New/Modified Commands
4. Other New Features
5. Resolved Issues
6. Known Issues
7. Next Major Release Plans
- Firmware Requirements
- Changes in User Interface
- New Features
- Resolved Issues
- Known Issues
1. Firmware Requirements
========================
Firmware Requirements
=====================
Please refer to the link below for more details on the firmware versions.
https://www.psi.ch/detectors/firmware.
Gotthard
========
Minimum compatible version : 11.01.2013
Latest version : 08.02.2018 (50um and 25um Master)
09.02.2018 (25 um Slave)
-Can not be upgraded remotely.
Eiger
=====
Minimum compatible version : 22
Latest version : 22
Minimum compatible version : 16
Latest version : 20
-Can be upgraded remotely via bit files.
Jungfrau
========
Minimum compatible version : 15.06.2018
Latest version : 15.06.2018
Minimum compatible version : 13.11.2017
Latest version : 13.11.2017
Detector Upgrade
================
Gotthard Cannot be upgraded remotely. Requires programming via USB blaster
Eiger Can be upgraded remotely via bit files
Jungfrau Can be upgraded remotely using sls_detector_put programfpga <pof>
Instructions available at
https://www.psi.ch/detectors/installation-instructions
under Detector Upgrade -> [Detector Type] -> Firmware.
Please refer to the link below for more details on the firmware versions.
https://www.psi.ch/detectors/firmware.
-Can be upgraded remotely via sls_detector_put programfpga <pof>.
2. Changes in User Interface
============================
Changes in User Interface
=========================
Client
------
1. Shared Memory:
POSIX shared memory has been implemented and they are typically created in
/dev/shm/ folder.
1. Additional functions added for advanced users in users class:
(setSpeed, setClockDivider, setReadOutFlags, setDac, getADC,
setAllTrimbits, startReceiver, stopReceiver,
startAcquisition non blocking, setReceiverSilentMode, setHighVoltage,
enableDataStreamingToClient, enableDataStreamingFromReceiver,
setReceiverDataStreamingOutPort, setClientDataStreamingInPort)
2. Zmq set up for client and receiver are separated.
zmqport for client and rx_zmqport for receiver. By default, they are the
same for the slsDetectorGui to work.
A multiSlsDetector object will create a shared memory segment with naming style:
slsDetectorPackage_x_[_z]
and an slsDetector object will create a shared memory segment with naming style:
slsDetectorPackage_x_sls_y[_z]
where
x is the multi detector id
y is the sls detector id
z is the environment variable SLSDETNAME, if set.
They can be deleted directly.
3. Users example also works without config file, where detector already
configured in shared memory.
Environment variable SLSDETNAME included for user-friendliness
of using 2 different detectors from the same client pc. One needn't use
different multi detector id if the SLSDETNAME is different for both consoles.
4. Use "sls_detector_get busy 0" to clear acquiring flag in shared memory
caused due to an earlier interrupted acquisition from Ctrl+C"
Constructor will fail if shared memory size is different (different package
releases/detectors). Loading config file cleans shared memory.
5. Set bit, clear bit, read register and write register cannot give -1 for
inconsistent values from multiple detectors. One has to check error from
API or read the values individually.
6. multiSlsDetector::char* getSettingsFile() function signature has been
changed to string getSettingsFile().
2. Exceptions in constructors:
All constructors that have an error throws an exception. For this release,
this is caught within the package and interfaced as error codes or messages
to the users using command line or API.
As a result:
- slsDetectorsUsers constructor signature now includes a success flag.
- If one uses multiSlsDetector, slsDetector, ZmqSocket classes directly,
catch exceptions from constructors.
- In future releases, the exception will be thrown
outside the package for the users to handle it.
3. API Compatibility:
Client now checks API version of Detector Server - Client and Receiver - Client
when connecting for the first time to detector server or receiver server
and the online flags have not been set in shm.
Upon failure, error messages will ensue and further commands will not
be executed. Detector servers referred to are only for Eiger, Jungfrau and Gotthard.
Previously, the detector server would exit on mismatched Firmware-Detector
server mismatch. They now wait for client to ask for compatibility check,
which is done the first time client connects to the detector and the
online flag in shm has not been set.
4. Commands "type", "id" and "replace" are removed.
Receiver
--------
7. Modified the help manaual/main-api/mainReceiver.cpp to make it more
robust (handling child process exit) and flexible to determine upon
start up the number of receivers (child processes), the start TCP port
and whether to call back data.
detReceiver is now executed with [start tcp port] [number of receivers]
[1 for call back, 0 for none] as arguments.
By default, start tcp port is 1954, number of receivers is 1, and call
back is initiated.
8. rx_datastream to enable/disable data streaming in receiver. Using the GUI
or registering data call back in client automatically enables zmq in
receiver and client. "externalgui" is removed from the command line. Use
this command instead.
9. Rx_tcpport argument to the slsReceiver can be given using -t.
Eg. slsReceiver -t1955
New Features
============
Package
-------
1. In addition to the C++ API, the Python API is also now provided.
1. Reciever Header Structure in file writing and call back:
2. CMAKE now with debug flag and rpath, show warnings, compile only certain
components (such as receiver or gui)
sls_receiver_header structure added to sls_receiver_defs.h for image headers
in file writing.
#define MAX_NUM_PACKETS 512
typedef std::bitset<MAX_NUM_PACKETS> sls_bitset;
typedef struct {
sls_detector_header detHeader; /**< is the detector header */
sls_bitset packetsMask; /**< is the packets caught bit mask */
} sls_receiver_header;
It includes the detector header structure + bitmask of 512 bits,
where each bit represents a packet caught. This is useful in saving time
in writing to file by not padding missing packets and still retaining useful data.
The binary and HDF5 writer version number changed from 1.0 to 2.0.
The detector header version remains as 1.0.
registerCallBackRawDataReady modified to give this structure pointer,
instead of individual structure member pointers.
2. ZmqSocket class:
3. One repository for entire package and made available at github.
If one uses ZmqSocket.h, then the json header has to be parsed outside
the class to allow the user to remove the restriction in extracting all data
from the json header.
3. Receiver Call back with modified size:
4. One can do --version or -v to all the binaries to find out the release
version of the particular executable.
5. All the software version numbers have only date in format YYMMDD.
registerCallBackRawDataModifyReady call back that is similar to the receiver
registerCallBackRawDataReady has been added to allow the call back to
specify an updated size of image after call back. This is in view to process
an image in call back (including extract only a region of the image) and
provide this updated size in callback. This new resized/processed image
will be written to file or streamed out via zmq. This is useful in ROI
selection in the receiver.
This also means that the call back is now called before writing to file.
3. New/Modified Commands
========================
Client
Client
------
1. add (modified):
appends detector to end of multi detector list.
2. replace:
sets hostname/ip address for a single detector.
3. user:
get user details from shared memory.
4. checkdetversion:
checks client version compatibility with detector server.
5. checkrecversion:
checks client version compatibility with receiver server.
6. Parallelized more commands to detector. Beneficial for large detectors.
(setTimer, setFileIndex, setOnline, setReceiverOnline, getReceiverStatus,
resetFramesCaught, setFrameIndex, setFileName, getFramesCaughtByReceiver,
setDynamicRange, setRateCorrection)
Option to also use "sls_detector_put threaded 0" to improve speed by
eliminating progress display during acquisition. Effective only for
large detectors.
Detector Server
---------------
7. (Eiger) Virtual class to execute on pc.
8. One can now read temperatures during acquisition. It goes via the stop
server.
9. (Jungfrau) One can start server in "debug" mode and then program the
new firmware via software command "sls_detector_put programfpga xx.pof".
10. (Jungfrau) Server can exit on start up if either the firmware or the
server is incompatible with each other.
11. (Jungfrau) One is able to set transmission delay (ms) of image for each
individual detector using "txndelay_frame" command. Beneficial for
large detectors.
12. (Jungfrau) One can set a threshold temperature (temp_threshold) and
enable the temperature control feature (temp_control). When the
temperature (temp_fpga) overshoots the threshold temperature, it will
set the temperature event (temp_event) and power off the chip. One must
then switch off the detector and check cooling. Switching back on starts
with defaults.
13. (25um Gotthard) Added start acquisition delay to master module.
14. (Gotthard) New constraints for firmware dated 08.02.2018 and 09.02.2018
(25 um Slave) include minimum exposure time is 186 ns and minimum
period is 1278 ns + current exposure time.
Receiver
--------
14. The detectorip and rx_udpip does not have to be in the same subnet anymore.
Add the following commands after rx_hostname in config file to overwrite
mac configuration:
rx_udpmac [router mac]
configuremac 0
15. Added silent mode to receiver using command r_silent [i] from client.
It might be beneficial for max frame rate applications.
16. Receiver print out can handle black or white backgrounds.
1. rx_zmqip:
sets/gets the zmq (TCP) ip of the receiver from where data is streamed
out from. (Eg. to the gui or intermediate process). By default, it is
the same as the zmqip.
17. zmq package included updated to v4.0.8.
2. zmqip:
sets/gets the zmq (TCP) ip, where client listens to, to reconstuct images.
(Eg. from receiver or intermediate process). By default, it is the same
as rx_zmqip.
3. rx_jsonaddheader:
sets/gets additional json header to be streamed out with the zmq from
receiver. Default is empty. Eg. p rx_jsonaddheader \"what\":\"nothing\"
4. r_discardpolicy:
sets/gets the frame discard policy in the receiver.
nodiscard - no discard (default),
discardempty - discard only empty frames,
discardpartial - discard any partial frame(fastest)
5. r_padding:
sets/gets the frame padding in the receiver.
0 does not pad partial frames(fastest),
1 (default) pads partial frames.
One can look at bitmask in the sls_receiver_header to process the unpadded
partial frames later.
6. activate (modified):
Extra option added to pad or unpad images in receivers when deactivated.
activate i [padding option], where i is activate/deactivate and padding
option is "padding" (default) or "nopadding".
7. rx_udpsocksize:
sets/gets the UDP socket buffer size. Already attempts to set by default
to 100mb, 2gb for Jungfrau. Does not remember custom values in client
shared memory, so must be initialized each time after setting receiver
hostname in config file.
8. rx_realudpsocksize:
gets the actual UDP socket buffer size. Usually double the set udp socket
buffer size due to kernel bookkeeping.
18. Zmq streaming from receiver also sends file index in json header.
9. r_framesperfile:
sets/gets the frames per file in receiver. 0 means infinite or all frames
in a single file. Default of Eiger changed from 2k to 10k.
Eiger Specific
--------------
1. status trigger:
To trigger internally via software, one can use "status trigger".
2. subdeadtime:
sets/gets sub frame dead time in s in 32 bit mode. Subperiod is set in
the detector by subexptime + subdeadtime. This value is normally a
constant set by an expert catered to individual detector modules in the
config file. Receiver files writes master file metadata subperiod
instead of subdeadtime.
3. gappixels:
enables/disables gap pixels in system (detector & receiver). 1 sets,
0 unsets. In Receiver, 4 bit gap pixels mode is not implemented, but is
implemented in client data call back. Gap pixels are at module level
and not at multi module level.
4. measuredperiod:
gets the measured frame period (time between last frame and the previous
one) in s. Makes sense only for acquisitions of more than 1 frame.
5. measuredsubperiod:
gets the measured subframe period (time between last subframe and the
previous one) in s in 32 bit mode.
6. flags(modified):
extra flags "nooverflow" (default) and "overflow" for sub images in 32
bit mode. If set to overflow, it will set MSB of pixel data high if
there was any saturation in any of the sub images 32 bit mode.
Jungfrau Specific
-----------------
1. storagecells:
sets/gets number of additional storage cells per acquisition. For very
advanced users only. Range: 0-15. Default: 0.
The #images = #frames * #cycles * (#storagecells +1).
2. storage_start:
sets/gets the storage cell that stores the first acquisition of the series.
For very advanced users only. Range: 0-15. Default: 15(0xf).
4. Other New Features
=====================
Client
------
1. (Jungfrau & Gotthard) Settingsdir and caldir is removed from config file.
Default dacs are stored in detector server. Hence, these folders
are also removed from slsDetectorPackage/settingsdir. Eiger and Mythen
continue to have them.
2. Depending on 1d position of detectors and detsizechan in config file,
row and column (previously xcoord and ycoord) are given to detector
servers (Eiger and Jungfrau) to encode into the udp header.
3. (Eiger) Setting threshold energy changes such as CAL dac is irrelevant
when interpolating between two energies and VRS dac is interpolated, not copied.
4. Users API updated with the following functions:
- setReceiverFramesDiscardPolicy
- setReceiverPartialFramesPadding
- setReceiverFramesPerFile
- sendSoftwareTrigger
- setSubFrameExposureDeadTime
- setSubFrameExposureTime
- enableGapPixels
- getMeasuredPeriod
- getMeasuredSubFramePeriod
- setOverflowMode
- setNumberOfStorageCells
- setStoragecellStart
- setThresholdEnergy (overloaded)
- resetFramesCaughtInReceiver
- setReceiverFifoDepth
- setFlowControl10G
- setTenGigabitEthernet
- getNMods
- setReceiverDataStreamingOutIP
- setClientDataStreamingInIP
SlsReceiver
-----------
1. slsMultiReceiver executable added that creates multiple receiver child processes.
./slsMultiReceiver [start_tcp_port] [num_receivers] [1 for call back, 0 for none]
2. Default row and column (previously xcoord and ycoord) are hardcoded
for missing packets. (Eiger and Jungfrau)
Gui
---
1. (Jungfrau) Gain plot included. Option under 2D options in Plot tab.
2. Option to maintain aspect ratio
3. Start and Stop separated to prevent multiple click syndrome.
Detector Server
---------------
1. (Jungfrau) To use programfpga command, one must start server with -update
mode and then restart server without -update mode.
2. (Jungfrau) ASIC Timer configured at server start up and changed a few
startup values for firmware v0.7 such as adc phase, ADC_PORT_INVERT_VAL
and ADC offset half speed value.
3. (Jungfrau) Minimum exposure time of 50 us was implemented.
4. (Eiger and Jungfrau) They can be configured to have x and y coord values
of the detector in their udp header.
19. If acquisition is done, but "stop dummy packet" to the gui was lost in
the network, stop acquisition command will restream it so that the gui
doesnt hang forever. This is used only for very fast detectors like
Moench.
5. Resolved Issues
==================
Client
------
memory leak for multi threading
1. Compiler flag -std=c++98 enforced. Debug flag removed.
2. If trimen gives different list from different detectors, it returns a -1.
3. Version format for each submodule of the package changed to just date YYMMDD.
Users class fixed to give correct version, instead of -1.
4. Getting settings in users class gave -1. Fixed now.
5. (Jungfrau) Programming FPGA now creates the rawbin file from pof in tmp
rather than source file location (for permission issues).
6. (Gotthard) ROI segmentation fault fixed.
Receiver
--------
1. Silent feature of receiver fixed.
2. Socket descriptor misused earlier for success flag, instead exceptions
used that are handled inside the package.
3. Global optind variable initialized to instantiate multiple receivers
in same process. Also removed static members to enable this feature.
4. Socket buffer size attempts to set for each acquiistion and provide
warning if no capabilities. Warnings can be removed using instruction with
error provided. Default Jungfrau UDP socket buffer size if 2 GB, default is
100 MB.
5. Refactored code a bit for performance and robustness, blocking push
in buffer between listener and dataprocessor
Detector Server
---------------
1. (Jungfrau) Stop server also mapped during a reset. Reading power status
instead of user input register for power.
2. (Eiger) Bug fix for saving trimbits to file (Advanced users).
3. (Gotthard 25um) config.txt is not read again after detector startup,
no matter the number of times the detector server is restarted.
6. Known Issues
Resolved Issues
===============
Receiver
--------
1. HDF5 compression and filters are not implemented yet.
Detector Server
---------------
1. (Eiger) Registers mapped differently between firmware v20 and v22.
So, please ensure correct on-board server before switching between
firmware versions. Else one cannot ping it anymore. Will need to flash firmware
again to recover.
2. (Gotthard) To switch back to all ADC from single ADC ROI, one must take
even number of images for the receiver to understand complete images.
This will be fixed in the next firmware upgrade.
7. Next Major Release Plans
===========================
Client
------
1. gethostbyname used in connecting to sockets was not thread safe for
multiple detectors. Using getaddrinfo for stability in multi threaded
environment.
1. Exceptions thrown to the user to be handled.
2. Updated writing content of config and parameter dump into files.
2. Compilation using c++11.
3. More locking to handle main and processing threads using the threadpool.
Removing unlock twice, which is undefined behavior.
4. (Jungfrau) adcphase returns the correct value, instead of -1.
Detector Server
---------------
4. (Eiger) The hardware MAC of the detector is used during configuration
and relayed back to client. Similarly, hardware IP for 1 Gbe data mode.
5. (Eiger) Status will return error if there was the unlikely trouble
reading status register in the front end board. Earlier, it would only
return idle.
6. (Jungfrau) patch server v3.0.0.6.3
Able to set settings, high voltage now correctly reads 0 when
switched off, dacs are properly set.
7. (Jungfrau) FPGA reset and programming FPGA firmware via software is done
properly
8. (Gotthard) patch server v3.0.0.5.1
Able to read temperature properly.
9. (Gotthard) butst mode if set too fast had unwanted behavior such as
sending same image continuously. Now it is handled to display error
and stop acquisition.
10. (Gotthard) completely removed the possibility to set timing modes
other than auto and trigger as they are not implemented anyway. Also
signal index 1, 2 and 3 are reserved and hence, cannot be configured for
an external trigger.
11. Non Mythen and non Eiger detectors can also now get settings file from
board.
12. (Gotthard) Did not get first few images initially after configuring MAC
of detector. Fixed.
3. Support of Mythen II restricted to this major and its minor releases.
4. Restructuring and refactoring of client code.
Receiver
--------
12. Made it easier to disable the standard receiver and fixing bugs related
to the use of a custom one.
13. (Jungfrau) HDF5 dimensions (npixelsY) required for mapping fixed.
14. patch2-v3.0.0-slsReceiverSoftware.patch
x, y and z coordinates in the call backs and the files are hardcoded
for this release.
15. Rest implementation (not used by standard receiver) removed.
Gui
---
16. patch1-v3.0.0-slsDetectorGui.patch
(Eiger) In expert mode and in advanced tab, when trimbits
loaded are different for every pixel, the gui complains and sets
all trimbits to zero. This has been resolved. Now, the "Set All
Trimbits" field is just set to -1.
17. Fixed segmentation fault of xputsn properly.
18. Upon clicking on "Start", clears acquiring flag in shared memory
caused due to an earlier interrupted acquisition from Ctrl+C"
19. Fixed plotting twice caused due to unzooming the first time.
20. Removed option for compression in Gui as it is not available currently.
21. Can also show Jungfrau multi detector in x direction in gui.
22. Switching tabs sometimes results in delay and gates fields being incorrectly
enabled. Fixed.
Known Issues
============
Client
------
1. File name prefix can only be done at multi deector level. Changing at
individual detector level will not include scan or position variables.
Detector Server
---------------
2. Standard header fills x-coord in 1D. y-coord and z-coord is not
implemented (3D).
Receiver
--------
3. HDF5 compression and filters are not implemented yet.

View File

@ -1 +1 @@
rm /dev/shm/slsDetectorPackage*;
for i in seq `ipcs -m | cut -d ' ' -f1`; do ipcrm -M $i; done;

17
cmk.sh
View File

@ -6,7 +6,6 @@ COMPILERTHREADS=0
TEXTCLIENT=0
RECEIVER=0
GUI=0
DEBUG=0
CLEAN=0
@ -25,7 +24,6 @@ Usage: $0 [-c] [-b] [-h] [-d <HDF5 directory>] [-j]
-r: Build/Rebuilds only receiver
-g: Build/Rebuilds only gui
-j: Number of threads to compile through
-e: Debug mode
For only make:
./cmk.sh
@ -55,7 +53,7 @@ For rebuilding only certain sections
" ; exit 1; }
while getopts ":bchd:j:trge" opt ; do
while getopts ":bchd:j:trg" opt ; do
case $opt in
b)
echo "Building of CMake files Required"
@ -92,11 +90,7 @@ while getopts ":bchd:j:trge" opt ; do
echo "Compiling Options: GUI"
GUI=1
REBUILD=1
;;
e)
echo "Compiling Options: Debug"
DEBUG=1
;;
;;
\?)
echo "Invalid option: -$OPTARG"
usage
@ -151,12 +145,7 @@ else
fi
fi
#Debug
if [ $DEBUG -eq 1 ]; then
CMAKE_POST+=" -DCMAKE_BUILD_TYPE=Debug "
echo "Debug Option enabled"
fi
CMAKE_POST+=" -DCMAKE_BUILD_TYPE=Debug "
#hdf5 rebuild
if [ $HDF5 -eq 1 ]; then

View File

@ -1,61 +0,0 @@
detsizechan 2560 1
hostname bchip074+bchip075+
#replace my_installation_path
settingsdir /my_installation_path/slsDetectorPackage/settingsdir/gotthard
caldir /my_installation_path/slsDetectorPackage/settingsdir/gotthard
0:extsig:0 trigger_in_rising_edge
0:rx_tcpport 1954
0:rx_udpport 50001
0:vhighvoltage 0
1:extsig:0 trigger_in_rising_edge
1:rx_tcpport 1955
1:rx_udpport 50002
#1:detectorip 10.1.1.52
1:vhighvoltage 0
##############################################################################
#########
######### Uncomment this part to use the gotthard25umZmq process
#########
##############################################################################
# #replace my_receiver_hostname with the hostname of IP of the machine where the receiver runs
#0:rx_zmqip my_receiver_hostname
#0:rx_zmqport 30003
# #replace my_client_hostname with the hostname of IP of the machine where the client/GUI or softIOC runs
#0:zmqip my_client_hostname
#0:zmqport 40003
# #replace my_receiver_hostname with the hostname of IP of the machine where the receiver runs
#1:rx_zmqip my_receiver_hostname
#1:rx_zmqport 30004
# #replace my_client_hostname with the hostname of IP of the machine where the client/GUI or softIOC runs
#1:zmqip my_client_hostname
#1:zmqport 40004
##############################################################################
#########
######### until here
#########
##############################################################################
r_readfreq 1
rx_datastream 1
#replace my_receiver_hostname with the hostname of 1Gb IP of the machine where the receiver runs
rx_hostname my_receiver_hostname
rx_datastream 1
outdir /tmp/
angconv none
threaded 1
settings veryhighgain
exptime 0.000005
period 0.0001
vhighvoltage 90

View File

@ -1,61 +0,0 @@
detsizechan 2560 1
hostname bchip074+bchip075+
#replace my_installation_path
settingsdir /my_installation_path/slsDetectorPackage/settingsdir/gotthard
caldir /my_installation_path/slsDetectorPackage/settingsdir/gotthard
0:extsig:0 trigger_in_rising_edge
0:rx_tcpport 1954
0:rx_udpport 50001
0:vhighvoltage 0
1:extsig:0 trigger_in_rising_edge
1:rx_tcpport 1955
1:rx_udpport 50002
#1:detectorip 10.1.1.52
1:vhighvoltage 0
##############################################################################
#########
######### Uncomment this part to use the gotthard25umZmq process
#########
##############################################################################
# #replace my_receiver_hostname with the hostname of IP of the machine where the receiver runs
#0:rx_zmqip my_receiver_hostname
#0:rx_zmqport 30003
# #replace my_client_hostname with the hostname of IP of the machine where the client/GUI or softIOC runs
#0:zmqip my_client_hostname
#0:zmqport 40003
# #replace my_receiver_hostname with the hostname of IP of the machine where the receiver runs
#1:rx_zmqip my_receiver_hostname
#1:rx_zmqport 30004
# #replace my_client_hostname with the hostname of IP of the machine where the client/GUI or softIOC runs
#1:zmqip my_client_hostname
#1:zmqport 40004
##############################################################################
#########
######### until here
#########
##############################################################################
r_readfreq 1
rx_datastream 1
#replace my_receiver_hostname with the hostname of 1Gb IP of the machine where the receiver runs
rx_hostname my_receiver_hostname
rx_datastream 1
outdir /tmp/
angconv none
threaded 1
settings veryhighgain
exptime 0.000005
period 0.0001
vhighvoltage 90

View File

@ -3,8 +3,12 @@ hostname bchip007
#0:port 1952
#0:stopport 1953
#0:rx_tcpport 1956 must also have this in receiver config file
0:settingsdir /home/l_maliakal_d/mySoft/newMythenSoftware/settingsdir/gotthard
0:angdir 1.000000
0:moveflag 0.000000
0:lock 0
0:caldir /home/l_maliakal_d/mySoft/newMythenSoftware/settingsdir/gotthard
0:ffdir /home/l_maliakal_d
0:extsig:0 off
#0:detectorip 129.129.202.9
0:detectormac 00:aa:bb:cc:dd:ee
@ -16,6 +20,7 @@ hostname bchip007
master -1
sync none
outdir /bigRAID/datadir_gotthard/rec_test_data
ffdir /home/l_maliakal_d
headerbefore none
headerafter none
headerbeforepar none
@ -24,4 +29,4 @@ badchannels none
angconv none
globaloff 0.000000
binsize 0.001000
threaded 1

View File

@ -1,14 +0,0 @@
Turn on the two receivers:
slsReceiver --rx_tcpport 1954 &
slsReceiver --rx_tcpport 1955 &
Switch on the photon conversion on the receiver machine (replace my_receiver_hostname):
gotthard25umZmq my_receiver_hostname 30003 my_receiver_hostname 40003 &
Run the configuration file:
sls_detector_put config bchip2modules.config
Start your measurements using the command line, the slsDetectorGui or the EPICS driver

View File

@ -1,15 +1,18 @@
hostname bchip038+
settingsdir /home/mySoft/slsDetectorsPackage/settingsdir/jungfrau
caldir /home/mySoft/slsDetectorsPackage/settingsdir/jungfrau
lock 0
0:rx_udpport 50004
0:rx_udpip 10.1.1.100
0:detectorip 10.1.1.10
rx_hostname pcmoench01
powerchip 1
#extsig:0 trigger_in_rising_edge
#timing trigger
timing auto
outdir /external_pool/jungfrau_data/softwaretest
threaded 1

View File

@ -1,6 +1,11 @@
detsizechan 1024 1024
hostname bchip048+bchip052+
settingsdir /home/mySoft/slsDetectorsPackage/settingsdir/jungfrau
caldir /home/mySoft/slsDetectorsPackage/settingsdir/jungfrau
lock 0
0:rx_udpport 50004
0:rx_udpip 10.1.1.100
0:rx_udpmac F4:52:14:2F:32:00
@ -17,9 +22,9 @@ hostname bchip048+bchip052+
rx_hostname pcmoench01
powerchip 1
#extsig:0 trigger_in_rising_edge
#timing trigger
extsig:0 trigger_in_rising_edge
timing auto
outdir /external_pool/jungfrau_data/softwaretest
threaded 1

View File

@ -1,489 +0,0 @@
hostname bchip085+
patword 0000 0000000000000000
patword 0001 0000000000000000
patword 0002 0008000900080000
patword 0003 0008000900080000
patword 0004 0008000900080000
patword 0005 0008000900080000
patword 0006 0008000900080000
patword 0007 0008000900080000
patword 0008 0008000900080000
patword 0009 0008000900080000
patword 000a 0008000900080000
patword 000b 0008000900080000
patword 000c 0008000900080000
patword 000d 0008000900080000
patword 000e 0008000900080000
patword 000f 0008000900080000
patword 0010 0008000900080000
patword 0011 0008000900080000
patword 0012 0008000900080000
patword 0013 0008000900080000
patword 0014 0008000900080000
patword 0015 0008000900080000
patword 0016 0008400900080020
patword 0017 0008400900080020
patword 0018 0008599f0418503a
patword 0019 0008599f0418503a
patword 001a 0108599f0418503a
patword 001b 0108599f0418503a
patword 001c 0108599f0418503a
patword 001d 0108599f0418503a
patword 001e 0108599f0418503a
patword 001f 0108599f0418503a
patword 0020 0108599f0418503a
patword 0021 0108599f0418503a
patword 0022 0108599f0418503a
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patioctrl 8f0effff6dbffdbf
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####mcp2011
#0:rx_udpip 10.1.1.102
#0:detectorip 10.1.1.19
#0:rx_udpport 32410
####gui listening to
#zmqip 129.129.202.131
#zmqport 30001
####data streaming out of
#rx_zmqip 10.1.2.103
#rx_zmqport 30003
#0:rx_hostname mpc2011
####mx-test-1
0:rx_udpip 10.1.1.100
0:detectorip 10.1.1.19
0:rx_udpport 32410
####gui listening to (on receiver pc)
zmqip 129.129.202.92
zmqport 30001
####data streaming out of
rx_zmqip 10.1.1.100
rx_zmqport 30003
0:rx_hostname pcmoench01
#turn on datastream from commandline
rx_datastream 1
r_readfreq 1
#0:configuremac -1
rx_datastream 1
r_readfreq 1
dac:6 800
dac:0 1300
dac:4 1428
dac:1 1000
dac:7 900
dac:3 680
dac:2 1400
dac:5 1200
adcinvert 4a342593
samples 5000
adcphase 90
adcpipeline 15
adcreg 14 40
powerchip 1
vhighvoltage 90
period 0.005
frames 100
period 0.1
outdir /scratch/
enablefwrite 0

View File

@ -8,11 +8,13 @@ hostname bchip007+bchip009+
#0:port 1952
#0:stopport 1953
#0:rx_tcpport 1956
0:settingsdir /home/l_msdetect/dhanya/slsDetectorsPackage/settingsdir/gotthard
0:angdir 1.000000
0:moveflag 0.000000
0:lock 0
0:caldir /home/l_msdetect/dhanya/slsDetectorsPackage/settingsdir/gotthard
0:ffdir /home/l_msdetect
0:extsig:0 off
0:detectorip 10.1.1.2
#0:detectormac 00:aa:bb:cc:dd:ee
#0:rx_udpport 50001
@ -26,11 +28,13 @@ hostname bchip007+bchip009+
#1:port 1952
#1:stopport 1953
1:rx_tcpport 1957
1:settingsdir /home/l_msdetect/dhanya/slsDetectorsPackage/settingsdir/gotthard
1:angdir 1.000000
1:moveflag 0.000000
1:lock 0
1:caldir /home/l_msdetect/dhanya/slsDetectorsPackage/settingsdir/gotthard
1:ffdir /home/l_msdetect
1:extsig:0 off
1:detectorip 10.1.2.2
#1:detectormac 00:aa:bb:cc:dd:ee
1:rx_udpport 50004
@ -52,4 +56,4 @@ badchannels none
angconv none
globaloff 0.000000
binsize 0.001000
threaded 1

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@ -0,0 +1 @@
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H1 { }
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DIV.displaymath { } /* math displays */
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@ -0,0 +1,84 @@
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<HEAD>
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<H1 ALIGN="CENTER">Angular calibration wizard manual</H1>
<DIV>
<P ALIGN="CENTER"><STRONG>Anna Bergamaschi</STRONG></P>
<P ALIGN="CENTER"><STRONG>March 12, 2018</STRONG></P>
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<!--Table of Child-Links-->
<A NAME="CHILD_LINKS"></A>
<UL>
<LI><A NAME="tex2html8"
HREF="node1.html">Introduction</A>
<LI><A NAME="tex2html9"
HREF="node2.html">Data acquisition</A>
<UL>
<LI><A NAME="tex2html10"
HREF="node2.html#SECTION00021000000000000000">Software</A>
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<LI><A NAME="tex2html11"
HREF="node3.html">Data analysis</A>
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HREF="node3.html#SECTION00031000000000000000">Software</A>
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<LI><A NAME="tex2html13"
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<LI><A NAME="tex2html14"
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<ADDRESS>
Thattil Dhanya
2018-03-12
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<P>
<H1 ALIGN="CENTER">Angular calibration wizard manual</H1>
<DIV>
<P ALIGN="CENTER"><STRONG>Anna Bergamaschi</STRONG></P>
<P ALIGN="CENTER"><STRONG>March 12, 2018</STRONG></P>
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<BR><HR>
<!--Table of Child-Links-->
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<UL>
<LI><A NAME="tex2html8"
HREF="node1.html">Introduction</A>
<LI><A NAME="tex2html9"
HREF="node2.html">Data acquisition</A>
<UL>
<LI><A NAME="tex2html10"
HREF="node2.html#SECTION00021000000000000000">Software</A>
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<LI><A NAME="tex2html11"
HREF="node3.html">Data analysis</A>
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<LI><A NAME="tex2html12"
HREF="node3.html#SECTION00031000000000000000">Software</A>
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<LI><A NAME="tex2html13"
HREF="node4.html">Setup calibration files</A>
<LI><A NAME="tex2html14"
HREF="node5.html">About this document ...</A>
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<BR><HR>
<ADDRESS>
Thattil Dhanya
2018-03-12
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<H1><A NAME="SECTION00010000000000000000">
Introduction</A>
</H1>
<P>
In order to convert from strip number to 2<IMG
WIDTH="12" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img1.png"
ALT="$\theta$">-angle, an accurate angular calibration of the detector must be performed (for details see the paper Bergamaschi, A. et al. (2010). J. Synchrotron Rad. 17, 653-668).
<BR>
<P>
For this purpose, a series of patterns of a powder standard with symmetric peaks (e.g. silicon) must acquired while shifting the detector by an angular step of the order of about 2% of the module size. During the measurement, a strong intensity peak (e.g. Si(111)) should pass through the field of view of every module such that it can be used as a reference angular position to perform the calibration of the modules position.
<BR>
<P>
In a first step, the peak is fitted with a Gaussian in order to determine its position <IMG
WIDTH="43" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img2.png"
ALT="$C_{peak}$"> in channel number for each of the acquired patterns.
<BR>
In a second step, for each module <IMG
WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$i$">, the encoder position <IMG
WIDTH="24" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img4.png"
ALT="$\Theta_e$"> is fitted as a function of the peak position <IMG
WIDTH="43" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img2.png"
ALT="$C_{peak}$"> according to:
<BR>
<DIV ALIGN="RIGHT">
<!-- MATH
\begin{equation}
\Theta_e=\Theta_o^i-\arctan\Big(\frac{p \cdot (C_{peak}-C_{center}^i)}{R^i}\Big),
\end{equation}
-->
<TABLE WIDTH="100%" ALIGN="CENTER">
<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><A NAME="eq:angcal"></A><IMG
WIDTH="291" HEIGHT="41" BORDER="0"
SRC="img5.png"
ALT="\begin{displaymath}
\Theta_e=\Theta_o^i-\arctan\Big(\frac{p \cdot (C_{peak}-C_{center}^i)}{R^i}\Big),
\end{displaymath}"></TD>
<TD WIDTH=10 ALIGN="RIGHT">
(1)</TD></TR>
</TABLE>
<BR CLEAR="ALL"></DIV><P></P>
where the parameters <IMG
WIDTH="24" HEIGHT="36" ALIGN="MIDDLE" BORDER="0"
SRC="img6.png"
ALT="$\Theta_o^i$"> is the angular offset with respect to the diffractometer zero position, <!-- MATH
$C_{center}^{i}$
-->
<IMG
WIDTH="53" HEIGHT="36" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$C_{center}^{i}$"> is the central channel and <IMG
WIDTH="22" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
SRC="img8.png"
ALT="$R^i$"> is the distance of the module <IMG
WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$i$"> from the diffractometer center while <IMG
WIDTH="79" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img9.png"
ALT="$p=50~\mu m$"> is the strip pitch of the detector.
<BR>
Finally, the global offset of the detector system is precisely determined by refining a silicon pattern at a well-defined energy (i.e., knowing the position of the peak).
<P>
The same function of equation&nbsp;<A HREF="#eq:angcal">1</A>, with the parameters obtained from the calibration, is used in order to convert from channel number to 2<IMG
WIDTH="12" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img1.png"
ALT="$\theta$">-angle.
<P>
The parallax at the borders of the modules due to the thickness of the silicon sensor is a function of the X-ray energy (higher energy X-rays are absorbed deeper inside the sensor) and is of the order of 0.2&nbsp;mdeg at 12&nbsp;keV and 0.5&nbsp;mdeg at 30&nbsp;keV.
<BR>
The differences in pixel size due to the different portion of solid angle covered by the strips on the border of the modules and the higher efficiency due to the longer path of the X-rays in the sensor are removed by the flat field correction. This also normalizes additional differences in pixel size between channels which are also present because of mismatches in the strip sensor fabrication and in fluctuations of the channels threshold level.
<P>
Patterns acquired at different detector positions are generally merged together in order to fill the gaps between the modules and correct possibly bad functioning channels. In this procedure the data from different positions which are closer than 4&nbsp;mdeg (the average pixel size) are averaged and the new position is set to the mean of the positions of the original points.
<P>
The position and width of the peaks results from a fit over several detector channels. Geometrical distortions might disturb this determination mainly because of errors in the angular calibration, fluctuations in the encoder position, variations between channels and parallax effects.
<BR>
The resolution in locating the peak center and determining its width and integrated intensity has been estimated by acquiring several patterns of a LaB<IMG
WIDTH="12" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img10.png"
ALT="$_6$"> sample in a 300&nbsp;<IMG
WIDTH="14" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img11.png"
ALT="$\mu$">m capillary with the detector shifted in 5&nbsp;mdeg steps between 30.4 and 36.5 degrees. The 16&nbsp;peaks acquired have been fitted with a Gaussian function plus background and the fluctuations on the fitted parameters have been calculated. The resulting average resolutions are 0.63<IMG
WIDTH="17" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img12.png"
ALT="$\pm$">0.06&nbsp;mdeg for the peak center and 0.22<IMG
WIDTH="17" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img12.png"
ALT="$\pm$">0.05&nbsp;mdeg for the peak Full-Width at Half-Maximum (FWHM) for an average peak FWHM of 27.0<IMG
WIDTH="17" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img12.png"
ALT="$\pm$">2.5&nbsp;mdeg.
<BR>
These results show that the angular calibration allows a resolution in determining the peaks position and width which is appropriate for structural determination.
<P>
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<H1><A NAME="SECTION00020000000000000000">
Data acquisition</A>
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<P>
The angular calibration consists in acquiring a set of diffraction patterns of a well known powder standard (e.g. Silicon) at different encoder positions. In order to facilitate the procedure, the sample should not emit fluorescent light and should present relatively symmetric peaks.
<BR>
During the measurement, a strong intensity peak (e.g. Si(111)) should pass through the field of view of every module such that it can be used as a reference angular position to perform the calibration of the modules position. In general the highest peak will be used for the calibration, but this is not necessary in case there would be e.g. geometrical limitations for shifting the detector.
<BR><B>Do not forget to properly position the beam stopper if the detector is scanned in front of the direct beam.</B>
<BR>
The detector should be shifted of an angular step of the order of about 2% of the module size, such that about 50 patterns can contribute to the fitting of the 3 parameters necessary for the angular calibration.
<BR>
<P>
All the angular calibration procedure should be acquired using a trimmed detector with the threshold set at half of the X-ray energy (Assuming no fluorescent element in the standard). A flat field should also be acquired in order to precisely correct the data, while the X-ray intensity should be kept lower than about 100&nbsp;kHz per strip in order to avoid the need for rate corrections.
<P>
A rough angular conversion file starting from a previous calibration or from the geometric characteristics of the mechanics is an advantage. The angular conversion file should contain a line for each module of the detector with its module number <IMG
WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$i$">, center <!-- MATH
$C_{center}^{i}$
-->
<IMG
WIDTH="53" HEIGHT="36" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$C_{center}^{i}$"> and error, conversion radius <IMG
WIDTH="38" HEIGHT="36" ALIGN="MIDDLE" BORDER="0"
SRC="img13.png"
ALT="$p/R^i$"> and error, offset <IMG
WIDTH="24" HEIGHT="36" ALIGN="MIDDLE" BORDER="0"
SRC="img6.png"
ALT="$\Theta_o^i$"> and error:
<PRE>
module 0 center 639.5 +- 0 conversion 6.56E-05 +- 0 offset 0 +- 0
</PRE>
Also the <I>global offset</I> value of the beamline should be approximately known i.e. the angular position of channel 0 of module 0 when the motor is set at 0.
<BR>
All the documentation assumes that the detector is oriented in the same direction as the encoder position i.e. large channel number at higher angles (both per module and absolute). If this is not the case, the <I>angular direction</I> should be set to -1.
<P>
<H2><A NAME="SECTION00021000000000000000">
Software</A>
</H2>
<P>
For the acquisition ot the data you need to install the slsDetector software package (please refere to separate documentation). The use of the GUI is optional and all operations can be performed also using the text client.
<BR>
<P>
Please make sure that you have edited the
<BR><I>slsDetectorSoftware/usersFunctions/angleFunction.h</I>
<BR>
in order to match the angular conversion for your geometry and
<BR><I>slsDetectorSoftware/usersFunctions/usersFunctions.cpp</I>
<BR>
in order to be able to move the detector and read out its position by using the slsDetector software.
<P>
In the following the command to acquire a dataset for the angular calibration with an exposure time of 1&nbsp;s, and position shift
<PRE>
#setup angular calibration log mode
&gt; sls_detector_put angcallog 1
#set exposure time to 1s
&gt; sls_detector_put exptime 1.
#setup threshold scan
&gt; sls_detector_put scan0script position
#setup the precision for the scan variable in the file name
&gt; sls_detector_put scan0prec 2
#set scan range between 20deg and -60deg, step of -0.1deg
# (at 12.4 keV the Si(111) peak is at approx 19deg
&gt; sls_detector_put scan0range 20 -60 -0.1
#acquire the data
&gt; sls_detector_acquire
#unset angular calibration log mode
&gt; sls_detector_put angcallog 0
</PRE>
<P>
With the GUI you can obtain the same results by clicking on the <I>Angular calibration</I> log button in the advanced tab (see figure&nbsp;<A HREF="#fig:guiangcallog">1</A>) and setting up the motor position scan in the Actions tab (see figure&nbsp;<A HREF="#fig:guiposscan">2</A>). The exposure time should also be set in the measurement tab.
<P>
Additional to the data files, the acquisition will produce a .angcal file containing an header and, for each step of the acquisition, the exect value of the motor position and the file name.
<BR>
In case you forgot to enable the angcallog flag in the software, you can produce the file with the syntax as follows, assuming that you know the exact values of your encoder for each frame:
<PRE>
type Mythen
maxmod 32
nmod 32
angconv /scratch/angcal20120422/ang.off
globaloff 5.088
fineoff 0.0
angdir 1
ffdir /scratch/angcal20120422/
flatfield flatfield_E12keV_T6keV_0.raw
badchannels /scratch/cal/bad.chans
19.99998 angcal_S20.00_0
19.90001 angcal_S19.90_0
19.79999 angcal_S19.80_0
19.70002 angcal_S19.70_0
......
</PRE>
<P>
<DIV ALIGN="CENTER"><A NAME="fig:guiangcallog"></A><A NAME="46"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 1:</STRONG>
Acquisition GUI window to enable the angular calibration log.</CAPTION>
<TR><TD><IMG
WIDTH="555" HEIGHT="603" ALIGN="BOTTOM" BORDER="0"
SRC="img14.png"
ALT="\includegraphics[width=\textwidth]{enable_angcal.eps}"></TD></TR>
</TABLE>
</DIV>
<P>
<DIV ALIGN="CENTER"><A NAME="fig:guiposscan"></A><A NAME="51"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 2:</STRONG>
Acquisition GUI window to setup the motor position scan.</CAPTION>
<TR><TD><IMG
WIDTH="555" HEIGHT="603" ALIGN="BOTTOM" BORDER="0"
SRC="img15.png"
ALT="\includegraphics[width=\textwidth]{position_scan.eps}"></TD></TR>
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<H1><A NAME="SECTION00030000000000000000">
Data analysis</A>
</H1>
<P>
The data analysis consists in fitting with a gaussian the selected peak of the powder pattern for each position in order to determine its position is channel number as a function of the encoder position.
<BR>
In a second step, for each module, the channel vs. encoder curve is fitted in order to extrapolate the three parameters necessary for the angular conversion and the result is written to file
<P>
<H2><A NAME="SECTION00031000000000000000">
Software</A>
</H2>
<P>
The software used for the angular calibration data analysis is based on root (see http://root.cern.ch).
<BR>
This can be downloaded as binary or installed from sources. The version of the software should not play an important role, but up to now everything has been implemented and tested using version 5.20.
<P>
To start the data analysis simply launch:
<PRE>
&gt; ./angularCalibrationWizard
</PRE>
<P>
<DIV ALIGN="CENTER"><A NAME="fig:setangcal"></A><A NAME="60"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 3:</STRONG>
Overview of the nagular calibration dataset.</CAPTION>
<TR><TD><IMG
WIDTH="555" HEIGHT="707" ALIGN="BOTTOM" BORDER="0"
SRC="img16.png"
ALT="\includegraphics[width=\textwidth]{setupAngcal.eps}"></TD></TR>
</TABLE>
</DIV>
<P>
To setup the angular calibration dataset, the .angcal file should be selected (or digited) and the load button should be pressed to confirm. The parameters of the angular calibration are then read to the file and the data loaded for a quick overview (see figure&nbsp;<A HREF="#fig:setangcal">3</A>).
<BR>
The software assumes that the data files (.raw) and the .encal file are in the same directory.
<BR>
A 2D color plot will show a rebinned overview of the dataset. The peak to be fitted should be visible as a high intensity diagonal line passing through all the channels.
<P>
<DIV ALIGN="CENTER"><A NAME="fig:peakfit"></A><A NAME="66"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 4:</STRONG>
Preview of the fitting of the Si(111) peak for one of the detector positions.</CAPTION>
<TR><TD><IMG
WIDTH="555" HEIGHT="707" ALIGN="BOTTOM" BORDER="0"
SRC="img17.png"
ALT="\includegraphics[width=\textwidth]{peakFit.eps}"></TD></TR>
</TABLE>
</DIV>
<P>
For a more detailed view of the data, one can select an angular calibration step from the combo box, select the plot mode (raw data or processed data as a function of channel number, processed angular converted data, flat field data, or again an overview of the whole dataset).
<BR>
By (right) clicking close to the axis you are able to zoom in/out, set the scale to logarithmic etc.
<BR>
<P>
If the bad channel list, angular conversion file or flat field file are changed compared to the acquisition, they can be reloaded by editing the correspondent text entries and pressing enter.
<P>
In particular, the angular converted data should be checked in order to view the position of the selected peak. In this case, the plot will be zoomed to the angular region slected in the minimum and maximum angle entries. By pressing fit, the fit of the peak in the selected angular range will be shown (see figure&nbsp;<A HREF="#fig:peakfit">4</A>). It is useful to check that it works properly in several positions such that then the sequential fitting on all steps can give good results.
<P>
To automatically fit all positions simply press <I>Proceed to Modules Calibration</I> and wait until all steps are fitted. This can take sometime, depending on the number of steps.
<P>
<DIV ALIGN="CENTER"><A NAME="fig:anglefit"></A><A NAME="73"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 5:</STRONG>
Window for fitting the angular calibration parameters of a module.</CAPTION>
<TR><TD><IMG
WIDTH="555" HEIGHT="707" ALIGN="BOTTOM" BORDER="0"
SRC="img18.png"
ALT="\includegraphics[width=\textwidth]{angleFit.eps}"></TD></TR>
</TABLE>
</DIV>
<P>
In the module calibration window (see figure&nbsp;<A HREF="#fig:anglefit">5</A>), you will be able to fit the channel number to encoder position curve to estimate the three angular calibration parameters for each module.
<BR>
The entries show the angular calibration parameters used for approximate angular conversion in the previous step of the calibration. These can be edited and will be used as start parameters for the fit.
By clicking on the check box next to the parameters, the selected parameter will be set and fixed during the fit. Often the center is used as a fix parameter.
<BR>
It is possible to navigate between modules by using the Previous and Next module buttons. To refit the current module (e.g. after changing one of the parameters) simply re-click on the module number.
<P>
After fitting all modules you can click on the <I>Write Angular Calibration</I> button, select the file name to write to and save the calibration angulat calibration data. Please note that the offset of module 0 will always be 0 and the other values will be rescaled to its value. Therefore the global offset of the steup will always need to be specified for a proper angular conversion unless the home of the encoder will not be redifined.
<P>
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Setup calibration files</A>
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<P>
To use the generated angular calibration files, using the text client:
<PRE>
sls_detector_put angconv /scratch/ang_new.off
</PRE>
while for the GUI the file name should be specified in the configuration file (works also for the text client).
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<STRONG>Angular calibration wizard manual</STRONG><P>
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<P ALIGN="CENTER"><STRONG>Anna Bergamaschi</STRONG></P>
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l2hSize :tex2html_wrap_inline191:9.38889pt::9.38889pt::42.17287pt.
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[33
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File: fig5.eps Graphic file (type eps)
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<fig7.eps>
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File: fig8.eps Graphic file (type eps)
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File: calibrateModule.eps Graphic file (type eps)
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[40
] (./images.aux) )
Here is how much of TeX's memory you used:
1156 strings out of 256217
14369 string characters out of 1917094
57024 words of memory out of 1500000
4462 multiletter control sequences out of 10000+200000
5339 words of font info for 22 fonts, out of 1200000 for 2000
645 hyphenation exceptions out of 8191
25i,6n,24p,836b,199s stack positions out of 5000i,500n,6000p,200000b,15000s
Output written on images.dvi (40 pages, 9712 bytes).

View File

@ -0,0 +1,252 @@
# LaTeX2HTML 2008 (1.71)
# Associate images original text with physical files.
$key = q/CS=frac{N_S}{N_0};MSF=1.6;AAT/;
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SRC="|."$dir".q|img32.png"
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$cached_env_img{$key} = q|<IMG
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WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img17.png"
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$cached_env_img{$key} = q|<IMG
WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img10.png"
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$cached_env_img{$key} = q|<IMG
WIDTH="555" HEIGHT="694" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img40.png"
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$key = q/{displaymath}N_n(E_t)simfrac{T}{tau_s}DBig(frac{-E_t}{ENC}Big).{displaymath};MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="169" HEIGHT="41" BORDER="0"
SRC="|."$dir".q|img23.png"
ALT="\begin{displaymath}
N_n(E_t) \sim \frac{T}{\tau_s} D \Big(\frac{-E_t}{ENC} \Big).
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$key = q/tau_s;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="18" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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$cached_env_img{$key} = q|<IMG
WIDTH="19" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img27.png"
ALT="$V_t$">|;
$key = q/ENC;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="44" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img3.png"
ALT="$ENC$">|;
$key = q/includegraphics[width=textwidth]{fig8.eps};AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="556" HEIGHT="539" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img36.png"
ALT="\includegraphics[width=\textwidth]{fig8.eps}">|;
$key = q/N_n;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="26" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img16.png"
ALT="$N_n$">|;
$key = q/T;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
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ALT="$T$">|;
$key = q/E_0;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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ALT="$E_0$">|;
$key = q/G;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="17" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img26.png"
ALT="$G$">|;
$key = q/{displaymath}N_gamma(E_t)=frac{N_0}{2}cdotBig(1+C_sfrac{E_0-2E_t}{E_0}Big)DBig(frac{E_0-E_t}{ENC}Big),{displaymath};MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="335" HEIGHT="41" BORDER="0"
SRC="|."$dir".q|img18.png"
ALT="\begin{displaymath}
N_\gamma(E_t)=\frac{N_0}{2}\cdot\Big(1+C_s \frac{E_0-2E_t}{E_0}\Big)D \Big(\frac{E_0-E_t}{ENC} \Big),
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$key = q/includegraphics[width=textwidth]{GUI_ThresholdScan.eps};AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="555" HEIGHT="603" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img38.png"
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$key = q/N_0;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="24" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img2.png"
ALT="$N_0$">|;
$key = q/N_S;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="27" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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ALT="$N_S$">|;
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$cached_env_img{$key} = q|<IMG
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$key = q/E_f;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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$key = q/i;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$key = q/G_i;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$key = q/includegraphics[width=textwidth]{fig7.eps};AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="556" HEIGHT="553" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img35.png"
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$cached_env_img{$key} = q|<IMG
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$cached_env_img{$key} = q|<IMG
WIDTH="83" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img20.png"
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$key = q/E_0slash2;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$cached_env_img{$key} = q|<IMG
WIDTH="78" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img14.png"
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$key = q/includegraphics[width=textwidth]{fig4.eps};AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="556" HEIGHT="539" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img33.png"
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$key = q/includegraphics[width=textwidth]{GUI_Advanced.eps};AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="555" HEIGHT="603" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img37.png"
ALT="\includegraphics[width=\textwidth]{GUI_Advanced.eps}">|;
$key = q/includegraphics[width=textwidth]{addEnergy.eps};AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="555" HEIGHT="694" ALIGN="BOTTOM" BORDER="0"
SRC="|."$dir".q|img39.png"
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$key = q/C_s;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="|."$dir".q|img19.png"
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$key = q/CS={begingroup{N_Sbegingroup{overN_0};MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$key = q/CS=;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$key = q/e^-;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$key = q/includegraphics[width=textwidth]{fig5.eps};AAT/;
$cached_env_img{$key} = q|<IMG
WIDTH="556" HEIGHT="539" ALIGN="BOTTOM" BORDER="0"
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$key = q/{displaymath}V_{t}=O+GcdotE_t.{displaymath};MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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V_{t}=O+G \cdot E_t.
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$key = q/Sigma>3ENC;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$key = q/N;MSF=1.6;AAT/;
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$key = q/Sigma>3,ENC;MSF=1.6;AAT/;
$cached_env_img{$key} = q|<IMG
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$key = q/Deltasim;MSF=1.6;AAT/;
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1;

View File

@ -0,0 +1,391 @@
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<P>
<H1 ALIGN="CENTER">Energy calibration wizard manual</H1>
<DIV>
<P ALIGN="CENTER"><STRONG>Anna Bergamaschi</STRONG></P>
<P ALIGN="CENTER"><STRONG>March 12, 2018</STRONG></P>
</DIV>
<P>
<BR><HR>
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<LI><A NAME="tex2html11"
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<LI><A NAME="tex2html12"
HREF="node2.html">Data acquisition</A>
<UL>
<LI><A NAME="tex2html13"
HREF="node2.html#SECTION00021000000000000000">Software</A>
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<LI><A NAME="tex2html14"
HREF="node3.html">Data analysis</A>
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<LI><A NAME="tex2html15"
HREF="node3.html#SECTION00031000000000000000">Software</A>
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<LI><A NAME="tex2html16"
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<ADDRESS>
Thattil Dhanya
2018-03-12
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<H1><A NAME="SECTION00010000000000000000">
Introduction</A>
</H1>
<P>
The choice of the level of the comparator threshold plays a very important role in counting systems since it influences the efficiency of the detector as well as its spatial resolution (for details see the paper Bergamaschi, A. et al. (2010). J. Synchrotron Rad. 17, 653-668).
<P>
Single-photon-counting detectors are sensitive to single photons and the only limitation on the fluctuations of the number of counts is given by the Poisson-like statistics of the X-ray quanta.
The digitized signal does not carry any information concerning the energy of the X-rays and all photons with an energy larger than the threshold are counted as one bit. This means that the choice of the correct comparator threshold level is critical in order to obtain good-quality data.
<BR>
Figure&nbsp;<A HREF="#fig:thrscanexpl">1</A> shows the expected number of counts as a function of the threshold energy for <IMG
WIDTH="24" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img2.png"
ALT="$N_0$"> monochromatic X-rays of energy <IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img1.png"
ALT="$E_0$">. This is often denominated S-curve and can be interpreted as the integral of the signal spectrum between the threshold level and infinity.
The dashed curve represents the behavior of an ideal counting system: nothing is counted for thresholds larger than the photon energy and all the <IMG
WIDTH="24" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img2.png"
ALT="$N_0$"> X-rays are counted for thresholds lower than <IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img1.png"
ALT="$E_0$">.
The thick solid line represents the physical curve which also takes into account the electronic noise and the charge sharing between channels.
<P>
The intrinsic noise on the electronic signal is defined by the Equivalent Noise Charge (<IMG
WIDTH="44" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$ENC$">). The <IMG
WIDTH="44" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$ENC$"> describes noise in terms of the charge at the detector input needed to create the same output at the end of the analog chain and is normally expressed in electrons. For silicon sensors, it can be converted into energy units by considering 1&nbsp;<IMG
WIDTH="23" HEIGHT="19" ALIGN="BOTTOM" BORDER="0"
SRC="img12.png"
ALT="$e^-$">=3.6&nbsp;eV.
The value of the <IMG
WIDTH="44" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$ENC$"> normally depends on the shaping settings of the analog chain and increases with shorter shaping times.
The resulting electronic signal spectrum is then given by a convolution between the radiation spectrum and the noise i.e., a Gaussian of standard deviation <IMG
WIDTH="44" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$ENC$">.
The S-curve for a monochromatic radiation beam is well described by a Gaussian cumulative distribution <IMG
WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img13.png"
ALT="$D$"> with an additional increase at low threshold due to the baseline noise, as shown by the solid thin line.
<P>
Moreover, when a photon is absorbed in the region between two strips of the sensor, the generated charge is partially collected by the two nearest electronic channels. For this reason the physical S-curve is not flat but can be modeled by a decreasing straight line. The number of shared photons <IMG
WIDTH="27" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img5.png"
ALT="$N_S$"> is given by the difference between the number of counts and the number of X-rays whose charge is completely collected by the strip (shown by the dotted line).
<P>
The number of counts in the physical case is equal to that in the ideal case for a threshold set at half the photon energy. This defines the optimal threshold level <IMG
WIDTH="78" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img14.png"
ALT="$E_t=E_0/2$">.
<BR>
The detector response <IMG
WIDTH="19" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
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WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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WIDTH="26" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img17.png"
ALT="$N_\gamma$">:
<BR>
<DIV ALIGN="RIGHT">
<!-- MATH
\begin{equation}
N_\gamma(E_t)=\frac{N_0}{2}\cdot\Big(1+C_s \frac{E_0-2E_t}{E_0}\Big)D \Big(\frac{E_0-E_t}{ENC} \Big),
\end{equation}
-->
<TABLE WIDTH="100%" ALIGN="CENTER">
<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><A NAME="eq:thrscan"></A><IMG
WIDTH="335" HEIGHT="41" BORDER="0"
SRC="img18.png"
ALT="\begin{displaymath}
N_\gamma(E_t)=\frac{N_0}{2}\cdot\Big(1+C_s \frac{E_0-2E_t}{E_0}\Big)D \Big(\frac{E_0-E_t}{ENC} \Big),
\end{displaymath}"></TD>
<TD WIDTH=10 ALIGN="RIGHT">
(1)</TD></TR>
</TABLE>
<BR CLEAR="ALL"></DIV><P></P>
where <IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img19.png"
ALT="$C_s$"> is the fraction of photons which produce a charge cloud which is shared between neighboring strips (<IMG
WIDTH="83" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img20.png"
ALT="$N_s=C_s N_0$">).
<BR>
By assuming a noise of Gaussian type, and considering its bandwidth limited by the shaping time <IMG
WIDTH="18" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img21.png"
ALT="$\tau_s$">, the number of noise counts in the acquisition time <IMG
WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img22.png"
ALT="$T$"> can be approximated as:
<BR>
<DIV ALIGN="RIGHT">
<!-- MATH
\begin{equation}
N_n(E_t) \sim \frac{T}{\tau_s} D \Big(\frac{-E_t}{ENC} \Big).
\end{equation}
-->
<TABLE WIDTH="100%" ALIGN="CENTER">
<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><A NAME="eq:noisescan"></A><IMG
WIDTH="169" HEIGHT="41" BORDER="0"
SRC="img23.png"
ALT="\begin{displaymath}
N_n(E_t) \sim \frac{T}{\tau_s} D \Big(\frac{-E_t}{ENC} \Big).
\end{displaymath}"></TD>
<TD WIDTH=10 ALIGN="RIGHT">
(2)</TD></TR>
</TABLE>
<BR CLEAR="ALL"></DIV><P></P>
<P>
The choice of the comparator threshold level <IMG
WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img10.png"
ALT="$E_t$"> influences not only the counting efficiency and noise performances, but also the spatial resolution and the counting statistics of the detector.
If the threshold is set at values higher than the ideal value <IMG
WIDTH="78" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img14.png"
ALT="$E_t=E_0/2$">, a fraction of the photons absorbed in the sensor in the region between two strips is not counted thus reducing the detector efficiency but improving its spatial resolution (narrower strip size). On the other hand, if the threshold is set at values lower than <IMG
WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img10.png"
ALT="$E_t$">, part of the X-rays absorbed in the region between two strips are counted by both of them, resulting in a deterioration of the spatial resolution of the detector and of the fluctuations on the number of photons because of the increased multiplicity.
<P>
Furthermore, the threshold uniformity is particularly critical with regards to fluorescent radiation emitted by the sample under investigation. Since the emission of fluorescent light is isotropic, the data quality will be improved by setting the threshold high enough in order to discard the fluorescence background (see figure&nbsp;<A HREF="#fig:thrscanfluo">3</A>).
<BR>
Moreover, setting the threshold too close to the energy of the fluorescent light gives rise to large fluctuations between channels in the number of counts since the threshold sits on the steepest part of the threshold scan curve for the fluorescent background. These differences cannot be corrected by using a flat-field normalization since the fluorescent component is not present in the reference image. For this reason, it is extremely important that the threshold uniformity over the whole detector is optimized. The threshold level must be set at least <IMG
WIDTH="88" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img24.png"
ALT="$\Sigma&gt;3\,ENC$"> away from both the fluorescent energy level and the X-ray energy in order to remove the fluorescence background while efficiently count the diffracted photons.
<P>
The comparator threshold is given by a global level which can be set on a module basis and adds to a component which is individually adjustable for each channel. In order to optimize the uniformity of the detector response it is important to properly adjust the threshold for all channels.
<BR>
Since both the signal amplification stages and the comparator are linear, it is necessary to calibrate the detector offset <IMG
WIDTH="17" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img25.png"
ALT="$O$"> and gain <IMG
WIDTH="17" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img26.png"
ALT="$G$"> in order to correctly set its comparator threshold <IMG
WIDTH="19" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img27.png"
ALT="$V_t$"> at the desired energy <IMG
WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img10.png"
ALT="$E_t$">:
<BR>
<DIV ALIGN="RIGHT">
<!-- MATH
\begin{equation}
V_{t}=O+G \cdot E_t.
\end{equation}
-->
<TABLE WIDTH="100%" ALIGN="CENTER">
<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><A NAME="eq:encal"></A><IMG
WIDTH="111" HEIGHT="26" BORDER="0"
SRC="img28.png"
ALT="\begin{displaymath}
V_{t}=O+G \cdot E_t.
\end{displaymath}"></TD>
<TD WIDTH=10 ALIGN="RIGHT">
(3)</TD></TR>
</TABLE>
<BR CLEAR="ALL"></DIV><P></P>
This is initially performed by acquiring measurements while scanning the global threshold using different X-ray energies and calculating the median of the counts at each threshold value for each module <IMG
WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img29.png"
ALT="$i$">. The curves obtained for one of the detector modules at three energies are shown in figure&nbsp;<A HREF="#fig:modulecalibration">4</A>. The experimental data are then fitted according to equation&nbsp;<A HREF="#eq:thrscan">1</A> and for each module a linear relation is found between the X-ray energy and the estimated inflection point, as shown in the inset of figure&nbsp;<A HREF="#fig:modulecalibration">4</A>. The resulting offset <IMG
WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img30.png"
ALT="$O_i$"> and gain <IMG
WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img31.png"
ALT="$G_i$"> are used as a conversion factor between the threshold level and the energy.
<P>
<DIV ALIGN="CENTER"><A NAME="fig:thrscanexpl"></A><A NAME="116"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 1:</STRONG>
Expected counts as a function of a threshold energy for a monochromatic beam of energy <IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img1.png"
ALT="$E_0$">=12&nbsp;keV. <IMG
WIDTH="24" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img2.png"
ALT="$N_0$">=10000 is the number of photons absorbed by the detector during the acquisition time. The dashed line represents the curve in an ideal case without electronic noise and charge sharing, the solid thin line with noise <IMG
WIDTH="44" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img3.png"
ALT="$ENC$">=1&nbsp;keV but without charge sharing and the solid thick line is the physical case with noise and <IMG
WIDTH="45" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img4.png"
ALT="$CS=$">22&nbsp;% charge sharing. <IMG
WIDTH="27" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img5.png"
ALT="$N_S$"> is the number of photons whose charge is shared between neighbouring strips (<!-- MATH
$CS=\frac{N_S}{N_0}$
-->
<IMG
WIDTH="71" HEIGHT="38" ALIGN="MIDDLE" BORDER="0"
SRC="img32.png"
ALT="$CS=\frac{N_S}{N_0}$">). The dotted line represents the number of photons whose charge is completely collected by a single strip.</CAPTION>
<TR><TD><IMG
WIDTH="556" HEIGHT="539" ALIGN="BOTTOM" BORDER="0"
SRC="img33.png"
ALT="\includegraphics[width=\textwidth]{fig4.eps}"></TD></TR>
</TABLE>
</DIV>
<P>
<DIV ALIGN="CENTER"><A NAME="fig:expthrscan"></A><A NAME="117"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 2:</STRONG>
Measured threshold scan at 12.5&nbsp;keV with the three different settings. In the inset the fit of the experimental data with the expected curve as in function&nbsp;<A HREF="#eq:thrscan">1</A> is shown in the region of the inflection point.</CAPTION>
<TR><TD><IMG
WIDTH="556" HEIGHT="539" ALIGN="BOTTOM" BORDER="0"
SRC="img34.png"
ALT="\includegraphics[width=\textwidth]{fig5.eps}"></TD></TR>
</TABLE>
</DIV>
<P>
<DIV ALIGN="CENTER"><A NAME="fig:thrscanfluo"></A><A NAME="53"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 3:</STRONG>
Number of counts as a function of the threshold measured from a sample containing iron (<IMG
WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$E_f$">=5.9&nbsp;keV) when using X-rays of energy <IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img1.png"
ALT="$E_0$">=12&nbsp;keV. In this case, setting the threshold at <IMG
WIDTH="39" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img8.png"
ALT="$E_0/2$">, which is very close to <IMG
WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$E_f$">, would give <IMG
WIDTH="35" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img9.png"
ALT="$\Delta \sim $">10% counts from the fluorescense background. Therefore the threshold should be set at an intermediate level <IMG
WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img10.png"
ALT="$E_t$"> between the two energy components with a distance of at least <IMG
WIDTH="85" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img11.png"
ALT="$\Sigma &gt;3ENC$"> from both <IMG
WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img7.png"
ALT="$E_f$"> and <IMG
WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img1.png"
ALT="$E_0$">.</CAPTION>
<TR><TD><IMG
WIDTH="556" HEIGHT="553" ALIGN="BOTTOM" BORDER="0"
SRC="img35.png"
ALT="\includegraphics[width=\textwidth]{fig7.eps}"></TD></TR>
</TABLE>
</DIV>
Differences in gain and offset are present also between individual channels within a module and therefore the use of threshold equalization techniques (trimming) using the internal 6-bit DAC is needed in order to reduce the threshold dispersion.
Since both gain and offset have variations between channels, the optimal trimming should be performed as a function of the threshold energy.
Please not that trimming of the channels of the detector should be performed in advanced and is extremely important for a succeful energy calibration of the detector.
<P>
All energy calibration procedures should be applied to a trimmed detector and only an improvement of the existing trimbits can be performed afterwards, since it does not significatively affect the energy calibration.
<P>
<DIV ALIGN="CENTER"><A NAME="fig:modulecalibration"></A><A NAME="118"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 4:</STRONG>
Median of the number of counts as a function of the threshold for X-rays of 12.5, 17.5 and 25&nbsp;keV for one of the detector modules using <I>standard</I> settings. The solid line represents the fit of the experimental points with equation&nbsp;<A HREF="#eq:thrscan">1</A>. In the inset the linear fit between the X-ray energy and the position of the inflection point of the curves is shown.</CAPTION>
<TR><TD><IMG
WIDTH="556" HEIGHT="539" ALIGN="BOTTOM" BORDER="0"
SRC="img36.png"
ALT="\includegraphics[width=\textwidth]{fig8.eps}"></TD></TR>
</TABLE>
</DIV>
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Data acquisition</A>
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<P>
The energy calibration consists in acquiring threshold scans using the detector at at least 2 (better 3) energies. A monochromatic beam is ideal in this procedure, but beam obtained from some fluorescent sample is also good.
<BR>
Please note that the statistic is important to succesfully analyze the data. Normally the exposure time for each step should be chosen in order to achieve at least 1000 counts per step.
If this is not possible it is better to reduce the scan range or enlarge the scan step rather than acquiring data with a too low statics.
<P>
With a quick acquisition or threshold scan it is useful to define the range of the scan and the exposure time. It is important to start from a threshold high enough that (almost) all channels of the detector have a negligible number of counts and that the plateau of the S-curve is long enough to correctly estimate the number of photons.
<P>
<H2><A NAME="SECTION00021000000000000000">
Software</A>
</H2>
<P>
For the acquisition ot the data you need to install the slsDetector software package (please refere to separate documentation). The use of the GUI is optional and all operations can be performed also using the text client.
<BR>
<P>
In the following the command to acquire a dataset for the energy calibration with an exposure time of 1&nbsp;s, and threshold scan range between 200 and 850 with a setp of 1 DAC unit.
<PRE>
&gt; sls_detector_put encallog 1 #setup energy calibration
&gt; sls_detector_put exptime 1. #set exposure time to 1s
&gt; sls_detector_put scan0script threshold #setup threshold scan
&gt; sls_detector_put scan0range 200 850 1 #set scan range between 200 and 850, step of 1
&gt; sls_detector_acquire #acquire the data
&gt; sls_detector_put encallog 0 #unset energy calibration
</PRE>
<P>
With the GUI you can obtain the same results by clicking on the <I>Energy Calibration</I> log button in the advanced tab (see figure&nbsp;<A HREF="#fig:guiencallog">5</A>) and setting up the threshold scan in the Actions tab (see figure&nbsp;<A HREF="#fig:guithrscan">6</A>). the exposure time should also be set in the measurement tab.
<P>
This procedure should be executed at at least 2 (better 3) energies.
<P>
Additional to the data files, the acquisition will produce a .encal file containing an header and, for each step of the acquisition, the threshold value and the file name.
<BR>
In case you forgot to enable the encallog flag in the software, you can produce the file with the syntax as follows:
<PRE>
settings standard
type Mythen+
nmod 12
modulenumber:0 000
modulenumber:1 111
modulenumber:2 222
modulenumber:3 333
modulenumber:4 444
modulenumber:5 555
modulenumber:6 666
modulenumber:7 777
modulenumber:8 888
modulenumber:9 999
modulenumber:10 aaa
modulenumber:11 bbb
450 standard_12_4keV_S450_0
460 standard_12_4keV_S460_0
470 standard_12_4keV_S470_0
480 standard_12_4keV_S480_0
490 standard_12_4keV_S490_0
500 standard_12_4keV_S500_0
510 standard_12_4keV_S510_0
520 standard_12_4keV_S520_0
...
...
</PRE>
<P>
<DIV ALIGN="CENTER"><A NAME="fig:guiencallog"></A><A NAME="73"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 5:</STRONG>
Acquisition GUI window to enable the energy calibration log.</CAPTION>
<TR><TD><IMG
WIDTH="555" HEIGHT="603" ALIGN="BOTTOM" BORDER="0"
SRC="img37.png"
ALT="\includegraphics[width=\textwidth]{GUI_Advanced.eps}"></TD></TR>
</TABLE>
</DIV>
<P>
<DIV ALIGN="CENTER"><A NAME="fig:guithrscan"></A><A NAME="78"></A>
<TABLE>
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 6:</STRONG>
Acquisition GUI window to setup the threshold scan.</CAPTION>
<TR><TD><IMG
WIDTH="555" HEIGHT="603" ALIGN="BOTTOM" BORDER="0"
SRC="img38.png"
ALT="\includegraphics[width=\textwidth]{GUI_ThresholdScan.eps}"></TD></TR>
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