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Removed MuTransistion from tests directory.

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prokscha 2021-07-20 10:51:10 +02:00
parent ef1f323f07
commit 341fa9f77c
9 changed files with 0 additions and 1257 deletions
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78
src/tests/MuTransition/7700.msr
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07700- complexMuPol, A0 100MHz, Mu-frac 1.00, Mu12 40.43 MHz(0.49), Mu23 256.25 MHz(0.01), ionRate 0.000 MHz, capRate 0.000 MHz, SF rate 0.010 MHz, 106.5 G
###############################################################
FITPARAMETER
# Nr. Name Value Step Pos_Error Boundaries
1 alpha 0.99961 -0.00091 0.00091 0 none
2 asy 0 0 none 0 0.33
3 phase 0 0 none
4 field 106.5 0 none 0 none
5 rate 0 0 none 0 150
6 asyMu12 0.135 0 none
7 phaseMu12 0.68 -0.42 0.42
8 freqMu12 40.43248 -0.00045 0.00045
9 rateMu12 0.0104 -0.0019 0.0019 0 100
10 asyMu34 0.135 0 none
11 phaseMu34 -0.01 -0.43 0.43
12 freqMu34 59.56737 -0.00046 0.00046
13 rateMu34 0.0164 -0.0019 0.0019 0 100
###############################################################
THEORY
asymmetry 2
TFieldCos 3 fun1 (phase frequency)
simplExpo 5 (rate)
+
asymmetry 6
TFieldCos 7 8 (phase frequency)
simplExpo 9 (rate)
+
asymmetry 10
TFieldCos 11 12 (phase frequency)
simplExpo 13 (rate)
###############################################################
FUNCTIONS
fun1 = par4 * gamma_mu
fun2 = par8 * gamma_mu
###############################################################
GLOBAL
fittype 2 (asymmetry fit)
data 1 18000 1 18000
fit 0.005 8
packing 1
###############################################################
RUN 07700 MUE4 PSI MUSR-ROOT (name beamline institute data-file-format)
#ADDRUN 07701 MUE4 PSI MUSR-ROOT (name beamline institute data-file-format)
alpha 1
map 0 0 0 0 0 0 0 0 0 0
forward 1
backward 2
backgr.fix 0.000000 0.000000
###############################################################
COMMANDS
MINIMIZE
MINOS
SAVE
###############################################################
FOURIER
units MHz # units either 'Gauss', 'Tesla', 'MHz', or 'Mc/s'
fourier_power 12
apodization STRONG # NONE, WEAK, MEDIUM, STRONG
plot POWER # REAL, IMAG, REAL_AND_IMAG, POWER, PHASE
phase 8.000000
#range_for_phase_correction 50.0 70.0
#range 0 200
###############################################################
PLOT 2 (asymmetry plot)
runs 1
range 0 8
view_packing 2
###############################################################
STATISTIC --- 2016-03-03 17:25:40
chisq = 8091.8, NDF = 7988, chisq/NDF = 1.012996

67
src/tests/MuTransition/9102.msr
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09102, Mu-frac 0.5, Mu 41MHz (0.42), Mu -35MHz(0.32), Ion. 250MHz, Capt. 1.5MHz, 0.1kG,
###############################################################
FITPARAMETER
# Nr. Name Value Step Pos_Error Boundaries
1 alpha 0.9998 0.000655606 none 0 none
2 asy 0.222118 0.00114398 none 0 0.33
3 phase 1.95348 0.308634 none
4 field 100.706 0.0663548 none 0 none
5 rate 0.526345 0.00550619 none 0 100
6 asyMu 0 0 none
7 phaseMu 0 0 none
8 freqMu 35 0 none
9 rateMu 0 0 none
###############################################################
THEORY
asymmetry 2
TFieldCos 3 fun1 (phase frequency)
simplExpo 5 (rate)
+
asymmetry 6
TFieldCos 7 8 (phase frequency)
simplExpo 9 (rate)
###############################################################
FUNCTIONS
fun1 = par4 * gamma_mu
###############################################################
RUN 09102 MUE4 PSI ROOT-NPP (name beamline institute data-file-format)
fittype 2 (asymmetry fit)
alpha 1
map 0 0 0 0 0 0 0 0 0 0
forward 1
backward 2
backgr.fix 0 0
data 1 12000 1 12000
t0 1 1
fit 0.00 8.00
packing 5
###############################################################
COMMANDS
SET BATCH
MINIMIZE
#MINOS
SAVE
END RETURN
###############################################################
FOURIER
units MHz # units either 'Gauss', 'MHz', or 'Mc/s'
fourier_power 12
apodization STRONG # NONE, WEAK, MEDIUM, STRONG
plot POWER # REAL, IMAG, REAL_AND_IMAG, POWER, PHASE
phase 8.50
#range_for_phase_correction 50.0 70.0
range 0.00 200.00
###############################################################
PLOT 2 (asymmetry plot)
runs 1
range 0.00 8.00 -0.30 0.30
###############################################################
STATISTIC --- 2010-03-06 18:19:16
chisq = 1666.28948, NDF = 1595, chisq/NDF = 1.0446956

67
src/tests/MuTransition/9900.msr
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09900- Mu-frac 1.00, Mu12 134.86 MHz(0.27), Mu23 143.71 MHz(0.23), ionRate 608086.30 MHz, capRate 1.00 MHz, SF rate 0.00, 100 G
###############################################################
FITPARAMETER
# Nr. Name Value Step Pos_Error Boundaries
1 alpha 1.0008 -0.0021 0.0021 0 none
2 asy 0.2717 -0.0014 0.0014 0 0.33
3 phase 1.78 -0.46 0.46
4 field 100.418 -0.035 0.035 0 none
5 rate 0.0000000072 -0.0000000072 0.0013386264 0 100
6 asyMu 0 0 none
7 phaseMu 0 0 none
8 freqMu 35 0 none
9 rateMu 0 0 none
###############################################################
THEORY
asymmetry 2
TFieldCos 3 fun1 (phase frequency)
simplExpo 5 (rate)
+
asymmetry 6
TFieldCos 7 8 (phase frequency)
simplExpo 9 (rate)
###############################################################
FUNCTIONS
fun1 = par4 * gamma_mu
###############################################################
RUN 09900 MUE4 PSI MUSR-ROOT (name beamline institute data-file-format)
fittype 2 (asymmetry fit)
alpha 1
map 0 0 0 0 0 0 0 0 0 0
forward 1
backward 2
backgr.fix 0 0
data 1 12000 1 12000
t0 0.0 0.0
fit 0 8
packing 5
###############################################################
COMMANDS
SET BATCH
MINIMIZE
MINOS
SAVE
END RETURN
###############################################################
FOURIER
units MHz # units either 'Gauss', 'Tesla', 'MHz', or 'Mc/s'
fourier_power 12
apodization STRONG # NONE, WEAK, MEDIUM, STRONG
plot POWER # REAL, IMAG, REAL_AND_IMAG, POWER, PHASE
phase 8
#range_for_phase_correction 50.0 70.0
range 0 200
###############################################################
PLOT 2 (asymmetry plot)
runs 1
range 0 8 -0.35 0.35
###############################################################
STATISTIC --- 2016-02-17 20:38:53
chisq = 1457.5, NDF = 1595, chisq/NDF = 0.913780

105
src/tests/MuTransition/Makefile.PSimulateMuTransition
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#---------------------------------------------------
# Makefile.PSimulateMuTransition
#
# Author: Thomas Prokscha
# Date: 25-Feb-2010
#
# $Id:$
#
#---------------------------------------------------
#---------------------------------------------------
# get compilation and library flags from root-config
ROOTCFLAGS = $(shell $(ROOTSYS)/bin/root-config --cflags)
ROOTLIBS = $(shell $(ROOTSYS)/bin/root-config --libs)
ROOTGLIBS = $(shell $(ROOTSYS)/bin/root-config --glibs)
#---------------------------------------------------
# depending on the architecture, choose the compiler,
# linker, and the flags to use
#
OSTYPE = $(shell uname)
ifeq ($(OSTYPE),Linux)
OS = LINUX
endif
ifeq ($(OSTYPE),Linux-gnu)
OS = LINUX
endif
ifeq ($(OSTYPE),darwin)
OS = DARWIN
endif
# -- Linux
ifeq ($(OS),LINUX)
CXX = g++
CXXFLAGS = -Wall -Wno-trigraphs -fPIC
INCLUDES = -I../include
LD = g++
LDFLAGS = -g
SOFLAGS = -O -shared
endif
# -- Darwin
ifeq ($(OS),DARWIN)
CXX = g++
CXXFLAGS = -Wall -Wno-trigraphs -fPIC
INCLUDES = -I../include
LD = g++
LDFLAGS = -g
SOFLAGS = -dynamic
endif
# installation directory
INSTALL_DIR = /usr/local
# the output from the root-config script:
CXXFLAGS += $(ROOTCFLAGS)
LDFLAGS +=
# the ROOT libraries (G = graphic)
LIBS = $(ROOTLIBS) -lXMLParser
GLIBS = $(ROOTGLIBS) -lXMLParser
# some definitions: headers (used to generate *Dict* stuff), sources, objects,...
OBJS =
OBJS += PSimulateMuTransition.o PSimulateMuTransitionDict.o
SHLIB = libPSimulateMuTransition.so
# make the shared lib:
#
all: $(SHLIB)
$(SHLIB): $(OBJS)
@echo "---> Building shared library $(SHLIB) ..."
/bin/rm -f $(SHLIB)
$(LD) $(OBJS) $(SOFLAGS) -o $(SHLIB) $(LIBS)
@echo "done"
# clean up: remove all object file (and core files)
# semicolon needed to tell make there is no source
# for this target!
#
clean:; @rm -f $(OBJS) *Dict* core*
@echo "---> removing $(OBJS)"
@echo "---> removing *~"
@rm -f *~
#
$(OBJS): %.o: %.cpp
$(CXX) $(INCLUDES) $(CXXFLAGS) -c $<
PSimulateMuTransitionDict.cpp: PSimulateMuTransition.h PSimulateMuTransitionLinkDef.h
@echo "Generating dictionary $@..."
rootcint -f $@ -c -p $^
install: all
@echo "Installing shared lib: libPSimulateMuTransition.so"
ifeq ($(OS),LINUX)
cp -pv $(SHLIB) $(INSTALL_DIR)/lib
cp -pv PSimulateMuTransition.h $(INSTALL_DIR)/include
# for root6
cp -pv PSimulateMuTransitionDict_rdict.pcm $(INSTALL_DIR)/lib
endif

452
src/tests/MuTransition/PSimulateMuTransition.cpp
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/***************************************************************************
PSimulateMuTransition.cpp
Author: Thomas Prokscha
Date: 25-Feb-2010, 14-Apr-2016
Use root macros runMuSimulation.C and testAnalysis.C to run the simulation
and to get a quick look on the data. Data are saved to a root histogram file
with a structure similar to LEM histogram files; musrfit can be used to
analyze the simulated data.
Description:
Root class to simulate muon spin polarization under successive Mu+/Mu0 charge-exchange
or Mu0 spin-flip processes by a Monte-Carlo method. Consider transverse field geometry,
and assume initial muon spin direction in x, and field applied along z. For PxMu(t) in
muonium use the complex expression of
equation (4) in the paper of M. Senba, J. Phys. B 23, 1545 (1990), or
equation (7) in the paper of M. Senba, J. Phys. B 24, 3531 (1991);
note that PxMu(t) is given by a superposition of the four frequencies "nu_12", "nu_34",
"nu_23", "nu_14". These frequencies and the corresponding probabilities ("SetMuFractionState12"
for transitions 12 and 34, "SetMuFractionState23" for states 23 and 14) can be calculated
for a given field with the root macro AnisotropicMu.C
Parameters:
1) Precession frequencies of "nu_12", "nu_34", "nu_23", "nu_14"
2) fractions of nu_12, nu_34; and nu_23 and nu_14
3) total Mu0 fraction
4) Mu+ electron-capture rate
5) Mu0 ionization rate
6) Mu0 spin-flip rate
7) initial muon spin phase
9) total muon decay asymmetry
9) number of muon decays to be generated.
10) debug flag: if TRUE print capture/ionization events on screen
Output:
Two histograms ("forward" and "backward") are written to a root file.
The muon event simulation with a sequence of charge-changing processes is
done in Event():
simulate muon spin phase under charge-exchange with "4 Mu transitions"
1) according to Mu+/Mu0 fraction begin either with a Mu+ state or Mu state
2) Mu+: determine next electron-capture time t_c. If t_c is larger than decay time t_d
calculate muon spin precession for t_d; else calculate spin precession for t_c.
3) Determine next ionization time t_i; calculate Px(t_i) in Muonium; calculate the total
muon spin polarization Px(t_i)*Px(t_c).
4) get the next electron capture time, continue until t_d is reached, and calculate
the resulting polarization.
The Mu0 spin-flip processes are calculated in GTSpinFlip(), using eq. (17) of
M. Senba, J. Phys. B 24, 3531 (1991).
***************************************************************************/
/***************************************************************************
* Copyright (C) 2010 by Thomas Prokscha, Paul Scherrer Institut *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <iostream>
using namespace std;
#include <TMath.h>
#include <TComplex.h>
#include "PSimulateMuTransition.h"
ClassImp(PSimulateMuTransition)
//--------------------------------------------------------------------------
// Constructor
//--------------------------------------------------------------------------
/**
* <p> Constructor.
*
* \param seed for the random number generator
*/
PSimulateMuTransition::PSimulateMuTransition(UInt_t seed)
{
fValid = true;
fRandom = new TRandom2(seed);
if (fRandom == 0) {
fValid = false;
}
fNmuons = 100; // number of muons to simulate
fNshowProgress = 100; // print progress on screen every fNshowProgress events
fMuPrecFreq34 = 4463.; // vacuum Mu hyperfine coupling constant
fMuPrecFreq12 = 0.; // Mu precession frequency of a 12 transition
fMuPrecFreq23 = 0.; // Mu precession frequency of a 23 transition
fMuPrecFreq14 = 0.; // Mu precession frequency of a 14 transition
fMuPrecFreq13 = 0.; // Mu precession frequency of a 13 transition
fMuPrecFreq24 = 0.; // Mu precession frequency of a 24 transition
fMuonPrecFreq = 0.; // muon precession frequency
fBfield = 0.01; // magnetic field (T)
fCaptureRate = 0.01; // Mu+ capture rate (MHz)
fIonizationRate = 10.; // Mu0 ionization rate (MHz)
fSpinFlipRate = 0.001; // Mu0 spin flip rate (MHz)
fInitialPhase = 0.;
fMuonPhase = fInitialPhase;
fMuonDecayTime = 0.;
fAsymmetry = 0.27;
fMuFraction = 0.;
fMuFractionState12 = 0.25;
fMuFractionState34 = 0.25;
fMuFractionState23 = 0.25;
fMuFractionState14 = 0.25;
fMuFractionState13 = 0.;
fMuFractionState24 = 0.;
fDebugFlag = kFALSE;
}
//--------------------------------------------------------------------------
// Destructor
//--------------------------------------------------------------------------
/**
* <p> Destructor.
*
*/
PSimulateMuTransition::~PSimulateMuTransition()
{
if (fRandom) {
delete fRandom;
fRandom = 0;
}
}
//--------------------------------------------------------------------------
// Output of current settings
//--------------------------------------------------------------------------
/*!
* <p>Prints the current settings onto std output.
*/
void PSimulateMuTransition::PrintSettings() const
{
cout << endl << "Mu0 precession frequency 12 (MHz) = " << fMuPrecFreq12;
cout << endl << "Mu0 precession frequency 34 (MHz) = " << fMuPrecFreq34;
cout << endl << "Mu0 precession frequency 23 (MHz) = " << fMuPrecFreq23;
cout << endl << "Mu0 precession frequency 14 (MHz) = " << fMuPrecFreq14;
cout << endl << "Mu0 precession frequency 13 (MHz) = " << fMuPrecFreq13;
cout << endl << "Mu0 precession frequency 24 (MHz) = " << fMuPrecFreq24;
cout << endl << "Mu+ precession frequency (MHz) = " << fMuonGyroRatio * fBfield;
cout << endl << "B field (T) = " << fBfield;
cout << endl << "Mu+ electron capture rate (MHz) = " << fCaptureRate;
cout << endl << "Mu0 ionizatioan rate (MHz) = " << fIonizationRate;
cout << endl << "Mu0 spin-flip rate (MHz) = " << fSpinFlipRate;
if (fSpinFlipRate > 0.001)
cout << endl << "!!! Note: spin-flip rate > 0.001 only spin-flip processes are considered!!!";
else{
cout << endl << "!!! spin-flip rate <= 0.001: only charge-exchange cycles are considered!!!";
cout << endl << "!!! if spin-flip rate > 0.001, only spin-flip processes are considered!!!";
}
cout << endl << "Decay asymmetry = " << fAsymmetry;
cout << endl << "Muonium fraction = " << fMuFraction;
cout << endl << "Muonium fraction state12 = " << fMuFractionState12;
cout << endl << "Muonium fraction state34 = " << fMuFractionState34;
cout << endl << "Muonium fraction state23 = " << fMuFractionState23;
cout << endl << "Muonium fraction state14 = " << fMuFractionState14;
cout << endl << "Muonium fraction state13 = " << fMuFractionState13;
cout << endl << "Muonium fraction state24 = " << fMuFractionState24;
cout << endl << "Number of particles to simulate = " << fNmuons;
cout << endl << "Print progress on screen frequency = " << fNshowProgress;
cout << endl << "Initial muon spin phase (degree) = " << fInitialPhase;
cout << endl << "Debug flag = " << fDebugFlag;
cout << endl << endl;
}
//--------------------------------------------------------------------------
// SetSeed (public)
//--------------------------------------------------------------------------
/**
* <p>Sets the seed of the random generator.
*
* \param seed for the random number generator
*/
void PSimulateMuTransition::SetSeed(UInt_t seed)
{
if (!fValid)
return;
fRandom->SetSeed(seed);
}
//--------------------------------------------------------------------------
// Run (public)
//--------------------------------------------------------------------------
/**
* \param histoForward
*/
void PSimulateMuTransition::Run(TH1F *histoForward, TH1F *histoBackward)
{
// Double_t muoniumPolX = 1.0; //polarization in x direction
Int_t i;
if (histoForward == 0 || histoBackward == 0)
return;
fMuonPrecFreq = fMuonGyroRatio * fBfield;
for (i = 0; i<fNmuons; i++){
fMuonPhase = TMath::TwoPi() * fInitialPhase/360.; // transform to radians
fMuonDecayTime = NextEventTime(fMuonDecayRate);
if (fSpinFlipRate > 0.001){// consider only Mu0 spin-flip in this case
fMuonPhase += TMath::ACos(GTSpinFlip(fMuonDecayTime));
}
else{
// initial muon state Mu+ or Mu0?
if (fRandom->Rndm() <= 1.-fMuFraction)
fMuonPhase += TMath::ACos(Event("Mu+"));
else
fMuonPhase += TMath::ACos(Event("Mu0"));
}
// fill 50% in "forward", and 50% in "backward" detector to get independent
// events in "forward" and "backward" histograms. This allows "normal" uSR
// analysis of the data
// change muon decay time to ns
if (fRandom->Rndm() <= 0.5)
histoForward->Fill(fMuonDecayTime*1000., 1. + fAsymmetry*TMath::Cos(fMuonPhase));
else
histoBackward->Fill(fMuonDecayTime*1000., 1. - fAsymmetry*TMath::Cos(fMuonPhase));
if ( (i%fNshowProgress) == 0) cout << "number of events processed: " << i << endl;
}
cout << "number of events processed: " << i << endl;
return;
}
//--------------------------------------------------------------------------
// NextEventTime (private)
//--------------------------------------------------------------------------
/**
* <p>Determine time of next event, assuming "Poisson" distribution in time
*
* \param EventRate event rate in MHz; returns next event time in micro-seconds
*/
Double_t PSimulateMuTransition::NextEventTime(const Double_t &EventRate)
{
if (EventRate <= 0.)
return -1.; // signal error
return -1./EventRate * TMath::Log(fRandom->Rndm());
}
//--------------------------------------------------------------------------
// Phase (private)
//--------------------------------------------------------------------------
// /**
/* * <p>Determines phase of the muon spin
*
* \param time duration of precession (us);
* \param chargeState charge state of Mu ("Mu+" or "Mu0")
*/
// Double_t PSimulateMuTransition::PrecessionPhase(const Double_t &time, const TString chargeState)
// {
// Double_t muonPhaseX;
// Double_t muoniumPolX = 0;
//
// if (chargeState == "Mu+")
// muonPhaseX = TMath::TwoPi()*fMuonPrecFreq*time;
// else if (chargeState == "Mu0"){
// muoniumPolX = GTFunction(time).Re();
// if (fDebugFlag) cout << "muoniumPolX = " << muoniumPolX << endl;
// muonPhaseX = TMath::ACos(muoniumPolX);
// }
// else
// muonPhaseX = 0.;
//
// return muonPhaseX;
// }
//--------------------------------------------------------------------------
// Mu0 transverse field polarization function (private)
//--------------------------------------------------------------------------
/**
* <p>Calculates Mu0 polarization in x direction by superposition of four Mu0 frequencies
*
* \param time (us);
*/
TComplex PSimulateMuTransition::GTFunction(const Double_t &time, const TString chargeState)
{
Double_t twoPi = TMath::TwoPi();
TComplex complexPol = 0;
if (chargeState == "Mu+")
complexPol = TComplex::Exp(-TComplex::I()*twoPi*fMuonPrecFreq*time);
else{
complexPol =
(fMuFractionState12 * TComplex::Exp(+TComplex::I()*twoPi*fMuPrecFreq12*time) +
fMuFractionState34 * TComplex::Exp(-TComplex::I()*twoPi*fMuPrecFreq34*time))
+
(fMuFractionState23 * TComplex::Exp(+TComplex::I()*twoPi*fMuPrecFreq23*time) +
fMuFractionState14 * TComplex::Exp(+TComplex::I()*twoPi*fMuPrecFreq14*time))
+
(fMuFractionState13 * TComplex::Exp(+TComplex::I()*twoPi*fMuPrecFreq13*time) +
fMuFractionState24 * TComplex::Exp(+TComplex::I()*twoPi*fMuPrecFreq24*time));
}
return complexPol;
}
//--------------------------------------------------------------------------
// Mu0 transverse field polarization function after n spin-flip collisions (private)
//--------------------------------------------------------------------------
/**
* <p>Calculates Mu0 polarization in x direction after n spin flip collisions.
* See M. Senba, J.Phys. B24, 3531 (1991), equation (17)
*
* \param time (us);
*/
Double_t PSimulateMuTransition::GTSpinFlip(const Double_t &time)
{
TComplex complexPolX = 1.0;
Double_t muoniumPolX = 1.0; //initial polarization in x direction
Double_t eventTime = 0;
Double_t eventDiffTime = 0;
Double_t lastEventTime = 0;
eventTime += NextEventTime(fSpinFlipRate);
if (eventTime >= time){
muoniumPolX = GTFunction(time, "Mu0").Re();
}
else{
while (eventTime < time){
eventDiffTime = eventTime - lastEventTime;
complexPolX = complexPolX * GTFunction(eventDiffTime, "Mu0");
lastEventTime = eventTime;
eventTime += NextEventTime(fSpinFlipRate);
}
// calculate for the last collision
eventDiffTime = time - lastEventTime;
complexPolX = complexPolX * GTFunction(eventDiffTime, "Mu0");
muoniumPolX = complexPolX.Re();
}
return muoniumPolX;
}
//--------------------------------------------------------------------------
// Event (private)
//--------------------------------------------------------------------------
/**
* <p> Generates "muon event": simulate muon spin polarization under charge-exchange with
* a neutral muonium state in transverse field, where the polarization evolution
* PxMu(t) of the muon spin in muonium is determined by a superposition of the
* four "Mu transitions" nu_12, nu_34, nu_23, and nu_14. Use complex polarization
* functions.
* 1) according to Mu+/Mu0 fraction begin either with a Mu+ state or Mu state
* 2) Mu+: determine next electron-capture time t_c. If t_c is larger than decay time t_d
* calculate muon spin precession for t_d, Px(t_i); else calculate spin precession for t_c.
* 3) Determine next ionization time t_i+1; calculate Px(t_i+1) in Muonium. Polarization
* after ionization process is given by Px(t_i+1)*Px(t_i).
* 4) get the next electron capture time, continue until t_d is reached.
*
*
* <p>Calculates Mu0 polarization in x direction during cyclic charge exchange.
* See M. Senba, J.Phys. B23, 1545 (1990), equations (9), (11)
* \param muonString if eq. "Mu+" begin with Mu+ precession
*/
Double_t PSimulateMuTransition::Event(const TString muonString)
{
TComplex complexPolX = 1.0;
Double_t muoniumPolX = 1.0; //initial polarization in x direction
Double_t eventTime, eventDiffTime, captureTime, ionizationTime;
eventTime = 0.;
eventDiffTime = 0.;
if (fDebugFlag) cout << "Decay time = " << fMuonDecayTime << endl;
// charge-exchange loop until muon decays
while (1) {
if (muonString == "Mu+"){// Mu+ initial state; get next electron capture time
captureTime = NextEventTime(fCaptureRate);
eventTime += captureTime;
if (fDebugFlag) cout << "Capture time = " << captureTime << " PolX = " << complexPolX.Re() << endl;
if (eventTime < fMuonDecayTime)
complexPolX *= GTFunction(captureTime, "Mu+");
else{ //muon decays; handle precession prior to muon decay
eventDiffTime = fMuonDecayTime - (eventTime - captureTime);
complexPolX *= GTFunction(eventDiffTime, "Mu+");
break;
}
// now, we have Mu0; get next ionization time
ionizationTime = NextEventTime(fIonizationRate);
eventTime += ionizationTime;
if (fDebugFlag) cout << "Ioniza. time = " << ionizationTime << " PolX = " << complexPolX.Re() << endl;
if (eventTime < fMuonDecayTime)
complexPolX *= GTFunction(ionizationTime, "Mu0");
else{ //muon decays; handle precession prior to muon decay
eventDiffTime = fMuonDecayTime - (eventTime - ionizationTime);
complexPolX *= GTFunction(eventDiffTime, "Mu0");
break;
}
}
else{// Mu0 as initial state; get next ionization time
ionizationTime = NextEventTime(fIonizationRate);
eventTime += ionizationTime;
if (fDebugFlag)
cout << "Mu Ioniza. time = " << ionizationTime << " PolX = " << complexPolX.Re() << endl;
if (eventTime < fMuonDecayTime)
complexPolX *= GTFunction(ionizationTime, "Mu0");
else{ //muon decays; handle precession prior to muon decay
eventDiffTime = fMuonDecayTime - (eventTime - ionizationTime);
complexPolX *= GTFunction(eventDiffTime, "Mu0");
break;
}
// Mu+ state; get next electron capture time
captureTime = NextEventTime(fCaptureRate);
eventTime += captureTime;
if (fDebugFlag) cout << "Capture time = " << captureTime << " PolX = " << complexPolX.Re() << endl;
if (eventTime < fMuonDecayTime)
complexPolX *= GTFunction(captureTime, "Mu+");
else{ //muon decays; handle precession prior to muon decay
eventDiffTime = fMuonDecayTime - (eventTime - captureTime);
complexPolX *= GTFunction(eventDiffTime, "Mu+");
break;
}
}
}
muoniumPolX = complexPolX.Re();
if (fDebugFlag) cout << " Final PolX = " << muoniumPolX << endl;
return muoniumPolX;
}

119
src/tests/MuTransition/PSimulateMuTransition.h
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@ -1,119 +0,0 @@
/***************************************************************************
PSimulateMuTransition.h
Author: Thomas Prokscha
Date: 25-Feb-2010
$Id$
***************************************************************************/
/***************************************************************************
* Copyright (C) 2010 by Thomas Prokscha, Paul Scherrer Institut *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef _PSIMULATEMUTRANSITION_H_
#define _PSIMULATEMUTRANSITION_H_
#include <TObject.h>
#include <TH1F.h>
#include <TRandom2.h>
#include <TComplex.h>
// global constants
const Double_t fMuonGyroRatio = 135.54; //!< muon gyromagnetic ratio (MHz/T)
const Double_t fMuonDecayRate = 0.4551; //!< muon decay rate (1/tau_mu, MHz)
class PSimulateMuTransition : public TObject
{
public:
PSimulateMuTransition(UInt_t seed = 0);
virtual ~PSimulateMuTransition();
virtual void PrintSettings() const;
virtual void SetNmuons(Int_t value) { fNmuons = value; } //!< number of muons
virtual void SetNshowProgress(Int_t value) { fNshowProgress = value; } //!< frequency of output on screen how many muons have been processed
virtual void SetDebugFlag(Bool_t value) { fDebugFlag = value; } //!< debug flag
virtual void SetBfield(Double_t value) { fBfield = value; } //!< sets magnetic field (T)
virtual void SetMuPrecFreq12(Double_t value) { fMuPrecFreq12 = value; } //!< sets Mu transition frequency (MHz)
virtual void SetMuPrecFreq34(Double_t value) { fMuPrecFreq34 = value; } //!< sets Mu transition frequency (MHz)
virtual void SetMuPrecFreq23(Double_t value) { fMuPrecFreq23 = value; } //!< sets Mu transition frequency (MHz)
virtual void SetMuPrecFreq14(Double_t value) { fMuPrecFreq14 = value; } //!< sets Mu transition frequency (MHz)
virtual void SetMuPrecFreq13(Double_t value) { fMuPrecFreq13 = value; } //!< sets Mu transition frequency (MHz)
virtual void SetMuPrecFreq24(Double_t value) { fMuPrecFreq24 = value; } //!< sets Mu transition frequency (MHz)
virtual void SetCaptureRate(Double_t value){ fCaptureRate = value; } //!< sets Mu+ electron capture rate (MHz)
virtual void SetIonizationRate(Double_t value){ fIonizationRate = value; } //!< sets Mu0 ionization rate (MHz)
virtual void SetSpinFlipRate(Double_t value){ fSpinFlipRate = value; } //!< sets Mu0 spin flip rate (MHz)
virtual void SetDecayAsymmetry(Double_t value){ fAsymmetry = value; } //!< muon decay asymmetry
virtual void SetMuFraction(Double_t value){ fMuFraction = value; } //!< Muonium fraction
virtual void SetMuFractionState12(Double_t value){ fMuFractionState12 = value; }
virtual void SetMuFractionState34(Double_t value){ fMuFractionState34 = value; }
virtual void SetMuFractionState23(Double_t value){ fMuFractionState23 = value; }
virtual void SetMuFractionState14(Double_t value){ fMuFractionState14 = value; }
virtual void SetMuFractionState13(Double_t value){ fMuFractionState13 = value; }
virtual void SetMuFractionState24(Double_t value){ fMuFractionState24 = value; }
virtual Bool_t IsValid() { return fValid; }
virtual void SetSeed(UInt_t seed);
virtual Double_t GetBfield() { return fBfield; } //!< returns the magnetic field (T)
virtual Double_t GetCaptureRate() { return fCaptureRate; } //!< returns Mu+ electron capture rate (MHz)
virtual Double_t GetIonizationRate() { return fIonizationRate; } //!< returns Mu0 ionization rate (MHz)
virtual void Run(TH1F *histoForward, TH1F *histoBackward);
private:
Bool_t fValid;
TRandom2 *fRandom;
Double_t fBfield; //!< magnetic field (T)
Double_t fMuPrecFreq12; //!< Mu transition frequency 12 (MHz)
Double_t fMuPrecFreq34; //!< Mu transition frequency 34 (MHz)
Double_t fMuPrecFreq23; //!< Mu transition frequency 23 (MHz)
Double_t fMuPrecFreq14; //!< Mu transition frequency 14 (MHz)
Double_t fMuPrecFreq13; //!< Mu transition frequency 13 (MHz)
Double_t fMuPrecFreq24; //!< Mu transition frequency 24 (MHz)
Double_t fMuonPrecFreq; //!< muon precession frequency (MHz)
Double_t fCaptureRate; //!< Mu+ electron capture rate (MHz)
Double_t fIonizationRate; //!< Mu0 ionization rate (MHz)
Double_t fSpinFlipRate; //!< Mu0 spin-flip rate (MHz)
Double_t fInitialPhase; //!< initial muon spin phase
Double_t fMuonDecayTime; //!< muon decay time (us)
Double_t fMuonPhase; //!< phase of muon spin
Double_t fAsymmetry; //!< muon decay asymmetry
Double_t fMuFraction; //!< total Mu fraction [0,1]
Double_t fMuFractionState12; //!< fraction of Mu in state 12
Double_t fMuFractionState34; //!< fraction of Mu in state 34
Double_t fMuFractionState23; //!< fraction of Mu in state 23
Double_t fMuFractionState14; //!< fraction of Mu in state 14
Double_t fMuFractionState13; //!< fraction of Mu in state 13
Double_t fMuFractionState24; //!< fraction of Mu in state 24
Int_t fNmuons; //!< number of muons to simulate
Int_t fNshowProgress; //!< output on screen how many muons have been processed
Bool_t fDebugFlag; //!< debug flag
virtual Double_t NextEventTime(const Double_t &EventRate);
// virtual Double_t PrecessionPhase(const Double_t &time, const TString chargeState);
virtual TComplex GTFunction(const Double_t &time, const TString chargeState); //!< transverse field polarization function of Mu0 or Mu+
virtual Double_t GTSpinFlip(const Double_t &time); //!< transverse field polarization function after spin-flip collisions
virtual Double_t Event(const TString muonString);
ClassDef(PSimulateMuTransition, 0)
};
#endif // _PSIMULATEMUTRANSITION_H_

40
src/tests/MuTransition/PSimulateMuTransitionLinkDef.h
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@ -1,40 +0,0 @@
/***************************************************************************
PSimulateMuTransitionLinkDef.h
Author: Thomas Prokscha
Date: 25-Feb-2010
$Id$
***************************************************************************/
/***************************************************************************
* Copyright (C) 2010 by Thomas Prokscha, Paul Scherrer Institut *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
// changed for root6
#ifdef __CINT__
#pragma link off all globals;
#pragma link off all classes;
#pragma link off all functions;
#pragma link C++ class PSimulateMuTransition+;
#endif

270
src/tests/MuTransition/runMuSimulation.C
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@ -1,270 +0,0 @@
/***************************************************************************
runMuSimulation.C
Author: Thomas Prokscha
Date: 25-Feb-2010
$Id$
***************************************************************************/
/***************************************************************************
* Copyright (C) 2010 by Thomas Prokscha, Paul Scherrer Institut *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
//
// either do
// root> .L runMuSimulation.C
// root> runMuSimulation()
//
// or
// root> .x runMuSimulation.C
//
#include "TMusrRunHeader.h"
#include "PSimulateMuTransition.h"
#define NDECAYHISTS 2
void runMuSimulation()
{
// load libraries during root startup, defined in rootlogon.C
// gSystem->Load("$ROOTSYS/lib/libPSimulateMuTransition");
// gSystem->Load("$ROOTSYS/lib/libTMusrRunHeader.so");
char titleStr[256];
TFolder *histosFolder;
TFolder *decayAnaModule, *scAnaModule;
TFolder *gRunHeader;
TString runTitle;
TString histogramFileName;
TObjArray Slist(0);
TMusrRunPhysicalQuantity prop;
//prepare to run simulation; here: isotropic Mu with A0 = 100.0 MHz
UInt_t runNo = 7701;
Double_t T = 300.; //temperature
Double_t EA = 100; //activation energy (meV)
Double_t spinFlipRate = 0.01; //if spinFlipRate > 0.001 only spin-flip processes will be simulated
Double_t capRate = 0.001;//*sqrt(T/200.); //assume that capture rate varies as sqrt(T), capRate = sigma*v*p , v ~ sqrt(T)
Double_t preFac = 6.7e7;
Double_t ionRate; //assume Arrhenius behaviour ionRate = preFac*exp(-EA/kT)
ionRate = 0.001; //preFac * exp(-EA/(0.08625*T)); // Ge: 2.9*10^7MHz "attempt" frequency; 1K = 0.08625 meV
Double_t B = 100.0; //field in G
Double_t Bvar = 0.; //field variance
Double_t Freq12 = 40.023; //Mu freq of the 12 transition
Double_t Freq34 = 59.977; //Mu freq of the 34 transition
Double_t Freq23 = 238.549; //Mu freq of the 23 transition
Double_t Freq14 = 338.549; //Mu freq of the 14 transition
Double_t Freq13 = 278.571; //Mu freq of the 23 transition
Double_t Freq24 = 325.165; //Mu freq of the 14 transition
Double_t MuFrac = 1.0; //total Mu fraction
Double_t MuFrac12 = 0.486; //weight of transition 12
Double_t MuFrac34 = 0.486; //weight of transition 34
Double_t MuFrac23 = 0.014; //weight of transition 23
Double_t MuFrac14 = 0.014; //weight of transition 14
Double_t MuFrac13 = 0.0; //weight of transition 13
Double_t MuFrac24 = 0.0; //weight of transition 24
Int_t Nmuons = 5e6; //number of muons
Int_t NshowProgress = 1e4; //frequency to show progress on screen
Double_t Asym = 0.27; //muon decay asymmetry
Int_t debugFlag = 0; //print debug information on screen
TTimeStamp *timeStampStart = new TTimeStamp();
cout << endl << "Simulation started on:" << endl;
timeStampStart->Print("l");
cout << endl;
histogramFileName = TString("0");
histogramFileName += runNo;
histogramFileName += TString(".root");
sprintf(titleStr,"- complexMuPol, A0 100MHz, Mu-frac %3.2f, Mu12 %6.2f MHz(%3.2f), Mu23 %6.2f MHz(%3.2f), ionRate %8.3f MHz, capRate %6.3f MHz, SF rate %6.3f MHz, %5.1f G", MuFrac, Freq12, MuFrac12, Freq23, MuFrac23, ionRate, capRate, spinFlipRate, B);
runTitle = TString("0");
runTitle += runNo;
runTitle += TString(titleStr);
cout << runTitle << endl << endl;
PSimulateMuTransition *simulateMuTransition = new PSimulateMuTransition();
if (!simulateMuTransition->IsValid()){
cerr << endl << "**ERROR** while invoking PSimulateTransition" << endl;
return;
}
simulateMuTransition->SetMuPrecFreq12(Freq12); // MHz
simulateMuTransition->SetMuPrecFreq34(Freq34); // MHz
simulateMuTransition->SetMuPrecFreq23(Freq23); // MHz
simulateMuTransition->SetMuPrecFreq14(Freq14); // MHz
simulateMuTransition->SetMuPrecFreq13(Freq13); // MHz
simulateMuTransition->SetMuPrecFreq24(Freq24); // MHz
simulateMuTransition->SetMuFraction(MuFrac); // initial Mu fraction
simulateMuTransition->SetMuFractionState12(MuFrac12);
simulateMuTransition->SetMuFractionState34(MuFrac34);
simulateMuTransition->SetMuFractionState23(MuFrac23);
simulateMuTransition->SetMuFractionState14(MuFrac14);
simulateMuTransition->SetMuFractionState13(MuFrac13);
simulateMuTransition->SetMuFractionState24(MuFrac24);
simulateMuTransition->SetBfield(B/10000.); // Tesla
simulateMuTransition->SetCaptureRate(capRate); // MHz
simulateMuTransition->SetIonizationRate(ionRate); // MHz
simulateMuTransition->SetSpinFlipRate(spinFlipRate); // MHz
simulateMuTransition->SetNshowProgress(NshowProgress);
simulateMuTransition->SetNmuons(Nmuons);
simulateMuTransition->SetDecayAsymmetry(Asym);
simulateMuTransition->SetDebugFlag(debugFlag); // to print time and phase during charge-changing cycle
// feed run info header
gRunHeader = gROOT->GetRootFolder()->AddFolder("RunHeader", "MuTransition Simulation Header Info");
gROOT->GetListOfBrowsables()->Add(gRunHeader, "RunHeader");
// header = new TLemRunHeader();
TMusrRunHeader *header = new TMusrRunHeader(true);
header->Set("RunInfo/Generic Validator URL", "http://lmu.web.psi.ch/facilities/software/MusrRoot/validation/MusrRoot.xsd");
header->Set("RunInfo/Specific Validator URL", "http://lmu.web.psi.ch/facilities/software/MusrRoot/validation/MusrRootLEM.xsd");
header->Set("RunInfo/Generator", "runMuSimulation");
header->Set("RunInfo/File Name", histogramFileName.Data());
header->Set("RunInfo/Run Title", runTitle.Data());
header->Set("RunInfo/Run Number", (Int_t) runNo);
header->Set("RunInfo/Run Start Time", "2016-03-01 06:20:00");
header->Set("RunInfo/Run Stop Time", "2016-03-01 06:20:11");
prop.Set("Run Duration", 11.0, "sec");
header->Set("RunInfo/Run Duration", prop);
header->Set("RunInfo/Laboratory", "PSI");
header->Set("RunInfo/Instrument", "MC-Simulation");
prop.Set("Muon Beam Momentum", 0.0, "MeV/c");
header->Set("RunInfo/Muon Beam Momentum", prop);
header->Set("RunInfo/Muon Species", "positive muon and muonium");
header->Set("RunInfo/Muon Source", "Simulation");
header->Set("RunInfo/Setup", "Monte-Carlo setup");
header->Set("RunInfo/Comment", "Testing effect of charge-exchange or Mu0 spin flip processes on uSR signal");
header->Set("RunInfo/Sample Name", "Monte-Carlo");
prop.Set("Sample Temperature", MRH_UNDEFINED, T, 0.01, "K");
header->Set("RunInfo/Sample Temperature", prop);
prop.Set("Sample Magnetic Field", MRH_UNDEFINED, B, Bvar, "G");
header->Set("RunInfo/Sample Magnetic Field", prop);
header->Set("RunInfo/No of Histos", 2);
prop.Set("Time Resolution", 1.0, "ns", "Simulation");
header->Set("RunInfo/Time Resolution", prop);
prop.Set("Implantation Energy", 0, "keV");
header->Set("RunInfo/Implantation Energy", prop);
prop.Set("Muon Spin Angle", 0, "degree along x");
header->Set("RunInfo/Muon Spin Angle", prop);
header->Set("DetectorInfo/Detector001/Name", "e+ forward");
header->Set("DetectorInfo/Detector001/Histo Number", 1);
header->Set("DetectorInfo/Detector001/Histo Length", 18001);
header->Set("DetectorInfo/Detector001/Time Zero Bin", 0.001); //doesn't like 0.0 as time zero
header->Set("DetectorInfo/Detector001/First Good Bin", 1);
header->Set("DetectorInfo/Detector001/Last Good Bin", 18000);
header->Set("DetectorInfo/Detector002/Name", "e+ backward");
header->Set("DetectorInfo/Detector002/Histo Number", 2);
header->Set("DetectorInfo/Detector002/Histo Length", 18001);
header->Set("DetectorInfo/Detector002/Time Zero Bin", 0.001);
header->Set("DetectorInfo/Detector002/First Good Bin", 1);
header->Set("DetectorInfo/Detector002/Last Good Bin", 18000);
// simulation parameters
header->Set("Simulation/Mu0 Precession frequency 12", Freq12);
header->Set("Simulation/Mu0 Precession frequency 34", Freq34);
header->Set("Simulation/Mu0 Precession frequency 23", Freq23);
header->Set("Simulation/Mu0 Precession frequency 14", Freq14);
header->Set("Simulation/Mu0 Precession frequency 13", Freq13);
header->Set("Simulation/Mu0 Precession frequency 24", Freq24);
header->Set("Simulation/Mu0 Fraction", MuFrac);
header->Set("Simulation/Mu0 Fraction 12", MuFrac12);
header->Set("Simulation/Mu0 Fraction 34", MuFrac34);
header->Set("Simulation/Mu0 Fraction 23", MuFrac23);
header->Set("Simulation/Mu0 Fraction 14", MuFrac14);
header->Set("Simulation/Mu0 Fraction 13", MuFrac13);
header->Set("Simulation/Mu0 Fraction 24", MuFrac24);
header->Set("Simulation/Mu0 Activation Energy", EA);
header->Set("Simulation/Mu0 Activation PreFactor", preFac);
header->Set("Simulation/Mux Capture Rate", capRate);
header->Set("Simulation/Mu0 Ionization Rate", ionRate);
header->Set("Simulation/Mu0 Spin Flip Rate", spinFlipRate);
header->Set("Simulation/Number of Muons", Nmuons);
header->Set("Simulation/Decay Asymmetry", Asym);
header->Set("SampleEnvironmentInfo/Cryo", "no cryostat");
header->Set("MagneticFieldEnvironmentInfo/Magnet Name", "Field along z");
header->Set("BeamlineInfo/Name", "Monte-Carlo setup");
histosFolder = gROOT->GetRootFolder()->AddFolder("histos", "Histograms");
gROOT->GetListOfBrowsables()->Add(histosFolder, "histos");
decayAnaModule = histosFolder->AddFolder("DecayAnaModule", "muSR decay histograms");
scAnaModule = histosFolder->AddFolder("SCAnaModule", "SlowControl histograms");
TH1F *histo[NDECAYHISTS];
char str[128];
for (UInt_t i=0; i<NDECAYHISTS; i++) {
sprintf(str, "hDecay00%d", (Int_t)i+1);
histo[i] = new TH1F(str, str, 18001, -0.5, 18000.5);
}
for (UInt_t i=0; i<NDECAYHISTS; i++)
decayAnaModule->Add(histo[i]);
// run simulation
simulateMuTransition->PrintSettings();
simulateMuTransition->Run(histo[0], histo[1]);
// write file
TFile *fout = new TFile(histogramFileName.Data(), "RECREATE", "Midas MC Histograms");
if (fout == 0) {
cout << endl << "**ERROR** Couldn't create ROOT file";
cout << endl << endl;
exit(0);
}
fout->cd();
header->FillFolder(gRunHeader);
gRunHeader->Add(&Slist);
Slist.SetName("RunSummary");
histosFolder->Write();
gRunHeader->Write();
fout->Close();
cout << "Histograms written to " << histogramFileName.Data() << endl;
cout << endl << "Simulation stopped on:" << endl;
TTimeStamp *timeStampEnd = new TTimeStamp();
timeStampEnd->Print("l");
cout << endl;
// delete fout;
// delete header;
// delete histo[0];
// delete histo[1];
// delete gRunHeader;
}

59
src/tests/MuTransition/testAnalysis.C
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@ -1,59 +0,0 @@
/***************************************************************************
testAnalysis.C
Author: Thomas Prokscha
Date: 26-Feb-2010
$Id$
***************************************************************************/
/***************************************************************************
* Copyright (C) 2010 by Thomas Prokscha, Paul Scherrer Institut *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
{
//gROOT->Reset();
Int_t rebin = 5;
Double_t t0, tbin;
t0 = 0.;
tbin = 1.;
gROOT->ProcessLine(".x defineFit.C"); //define fit function muonLife
histos = dynamic_cast <TFolder*>(gDirectory->Get("histos"));
hDecay00 = dynamic_cast <TH1F*>(histos->FindObjectAny("hDecay00"));
hDecay01 = dynamic_cast <TH1F*>(histos->FindObjectAny("hDecay01"));
hForward = hDecay00->Rebin(rebin, "hForward");
hBackward = hDecay01->Rebin(rebin, "hBackward");
//hForward->Draw();
hSum = (TH1*) hForward->Clone("hSum");
hSum->Reset();
hSum->Add(hForward, hBackward, 1., 1.);
//hSum->Draw();
hAsym = (TH1*) hForward->GetAsymmetry(hBackward, 1., 0.);
hAsym->SetName("Asymmetry");
hAsym->SetTitle("Asymmetry");
hAsym->GetXaxis()->SetTitle("Time (ns)");
hAsym->Draw();
asymTFExpo->SetLineColor(2); //fit function red
}