- Added polarisation support for TAS

amor.dic

@@ -13,7 +13,7 @@
 # these things
 timebin=512
 detxsize=255
-detysize=255
+detysize=128
 scanlength = 10
 chunk = 
 #---------- NXentry level
@@ -180,9 +180,12 @@ detbase=/entry1,NXentry/reflectometer,NXinstrument/TOF,NXdetector/SDS \
 dettime=/entry1,NXentry/reflectometer,NXinstrument/TOF,NXdetector/SDS time_binning \
          -type DFNT_FLOAT32 -rank 1 -dim {$(timebin)} -attr {axis,3} \
          -attr {units,ms}
+#spinup=/entry1,NXentry/reflectometer,NXinstrument/TOF,NXdetector/SDS spinup \
+#         -type DFNT_INT32 -rank 3 -dim {$(detxsize),$(detysize),$(timebin)} \
+#          -LZW $(chunk) -attr {signal,1} 
 spinup=/entry1,NXentry/reflectometer,NXinstrument/TOF,NXdetector/SDS spinup \
          -type DFNT_INT32 -rank 3 -dim {$(detxsize),$(detysize),$(timebin)} \
-          -LZW $(chunk) -attr {signal,1} 
+          $(chunk) -attr {signal,1} 
 detchunk=/entry1,NXentry/reflectometer,NXinstrument/TOF,NXdetector/SDS \
     chunksize -type DFNT_INT32 -rank 1 -dim {3} 
 spinup2d=/entry1,NXentry/reflectometer,NXinstrument/TOF,NXdetector/SDS spinup \

amortest.tcl

@@ -185,18 +185,18 @@ Motor COX SIM -100. 100. .1 2.   # counter x
 ClientPut "Motors initialized"
 
 #======================== histogram memory
-#MakeHM  hm SinqHM
+MakeHM  hm SinqHM
-MakeHM  hm SIM
+#MakeHM  hm SIM
 hm configure HistMode PSD
 hm configure OverFlowMode    Ceil
 hm configure Rank     1
 hm configure dim0 256
-hm configure dim1 256
+hm configure dim1 128 
-hm configure xfac 10
+hm configure xfac 16
-hm configure yfac 10
+hm configure yfac 16
 hm configure xoff 128
-hm configure yoff 128
+hm configure yoff 64
-hm configure Length  65536 
+hm configure Length   32768
 hm configure BinWidth 4
 hm preset 100.
 hm CountMode Timer
@@ -204,7 +204,7 @@ hm configure HMComputer psds03.psi.ch
 hm configure HMPort 2400
 hm configure Counter counter
 hm configure init 0
-hm genbin 0. 33  1024
+hm genbin 0. 33  512
 hm init
 
 ClientPut "Histogram Memory Initialized"

danu.dat

@@ -1,3 +1,3 @@
- 174 
+ 189 
 NEVER, EVER modify or delete this file
 You'll risk eternal damnation and a reincarnation as a cockroach!|n

devexec.c

@@ -246,7 +246,7 @@
   int StartMotor(pExeList self, SicsInterp *pSics, SConnection *pCon,
                  char *name, float fVal)
   {
-    pMotor pMot = NULL;
+    pDummy pMot = NULL;
     CommandList *pCom = NULL;
     char pBueffel[256];
 
@@ -261,7 +261,7 @@
       SCWrite(pCon,pBueffel,eError);
       return 0;
     }
-    pMot = (pMotor)pCom->pData;
+    pMot = (pDummy)pCom->pData;
     if(!pMot)
     {
       sprintf(pBueffel,"ERROR: %s is no motor ",name);

sicsstatus.tcl

@@ -1,47 +1,74 @@
-a5l.length 80.000000
+yfactor 1.420000
-flightpathlength 0.000000
+yfactor setAccess 1
-flightpathlength setAccess 1
+xfactor 0.715000
-flightpath 0.000000
+xfactor setAccess 1
-flightpath setAccess 1
+ps.listfile peaksearch.dat
-delay 2500.000000
+ps.listfile setAccess 2
-delay setAccess 1
+ps.scansteps 24
-hm CountMode timer
+ps.scansteps setAccess 2
-hm preset 100.000000
+ps.scanpreset 1000000.000000
-hm genbin 120.000000 35.000000 512
+ps.scanpreset setAccess 2
-hm init
+ps.preset 1000.000000
-datafile focus-1001848.hdf
+ps.preset setAccess 2
-datafile setAccess 3
+ps.countmode monitor
+ps.countmode setAccess 2
+ps.cogcontour 0.200000
+ps.cogcontour setAccess 2
+ps.cogwindow 60
+ps.cogwindow setAccess 2
+ps.window 7
+ps.window setAccess 2
+ps.steepness 3
+ps.steepness setAccess 2
+ps.threshold 30
+ps.threshold setAccess 2
+ps.sttstep 3.000000
+ps.sttstep setAccess 2
+ps.sttend 70.000000
+ps.sttend setAccess 2
+ps.sttstart 5.000000
+ps.sttstart setAccess 2
+ps.omstep 3.000000
+ps.omstep setAccess 2
+ps.omend 30.000000
+ps.omend setAccess 2
+ps.omstart 0.000000
+ps.omstart setAccess 2
+ps.chistep 12.000000
+ps.chistep setAccess 2
+ps.chiend 180.000000
+ps.chiend setAccess 2
+ps.chistart 0.000000
+ps.chistart setAccess 2
+ps.phistep 3.000000
+ps.phistep setAccess 2
+ps.phiend 180.000000
+ps.phiend setAccess 2
+ps.phistart 0.000000
+ps.phistart setAccess 2
+hm3 CountMode timer
+hm3 preset 10.000000
 hm2 CountMode monitor
 hm2 preset 2.000000
 hm1 CountMode monitor
 hm1 preset 2.000000
-dbfile UNKNOWN
-dbfile setAccess 2
-# Motor th
-th SoftZero 0.000000
-th SoftLowerLim 4.000000
-th SoftUpperLim 113.000000
-th Fixed -1.000000
-th sign 1.000000
-th InterruptMode 0.000000
-th AccessCode 2.000000
 #Crystallographic Settings
 hkl lambda 1.179000
-hkl setub 0.004076 -0.080526 -0.018163 -0.008113 -0.023908 0.061299 -0.161515 -0.000831 -0.003537
+hkl setub -0.017880 -0.074923 0.028280 -0.007008 -0.036800 -0.057747 0.160912 -0.009928 0.000627
-det3dist 300.000000
+detdist3 0.000000
-det3dist setAccess 1
+detdist3 setAccess 1
 det3zeroy 128.000000
 det3zeroy setAccess 1
 det3zerox 128.000000
 det3zerox setAccess 1
-det2dist 300.000000
+detdist2 0.000000
-det2dist setAccess 1
+detdist2 setAccess 1
 det2zeroy 128.000000
 det2zeroy setAccess 1
 det2zerox 128.000000
 det2zerox setAccess 1
-det1dist 300.000000
+detdist1 0.000000
-det1dist setAccess 1
+detdist1 setAccess 1
 det1zeroy 128.000000
 det1zeroy setAccess 1
 det1zerox 128.000000
@@ -68,7 +95,7 @@ stt InterruptMode 0.000000
 stt AccessCode 2.000000
 # Motor ch
 ch SoftZero 0.000000
-ch SoftLowerLim 80.000000
+ch SoftLowerLim 0.000000
 ch SoftUpperLim 212.000000
 ch Fixed -1.000000
 ch sign 1.000000
@@ -79,7 +106,7 @@ ph SoftZero 0.000000
 ph SoftLowerLim -360.000000
 ph SoftUpperLim 360.000000
 ph Fixed -1.000000
-ph sign -1.000000
+ph sign 1.000000
 ph InterruptMode 0.000000
 ph AccessCode 2.000000
 # Motor dg3
@@ -119,12 +146,12 @@ phi SoftZero 0.000000
 phi SoftLowerLim -360.000000
 phi SoftUpperLim 360.000000
 phi Fixed -1.000000
-phi sign -1.000000
+phi sign 1.000000
 phi InterruptMode 0.000000
 phi AccessCode 2.000000
 # Motor chi
 chi SoftZero 0.000000
-chi SoftLowerLim 80.000000
+chi SoftLowerLim 0.000000
 chi SoftUpperLim 212.000000
 chi Fixed -1.000000
 chi sign 1.000000
@@ -148,8 +175,6 @@ twotheta InterruptMode 0.000000
 twotheta AccessCode 2.000000
 lastscancommand cscan a4  10.  .1  10  5 
 lastscancommand setAccess 2
-banana CountMode timer
-banana preset 100.000000
 sample_mur 0.000000
 sample_mur setAccess 2
 email UNKNOWN

simev.c

@@ -76,6 +76,10 @@
      pMe = (pSimST)self->pPrivate;
      assert(pMe);
      
+     if(pMe->fFailure < .0){
+       return 1;
+     }
+
      if((int)time(&tD) > pMe->tFinish)
      {
        return 1;
@@ -101,7 +105,11 @@
     
      if(RunComplete(self))
      {
+       if(pMe->fFailure < .0){
+	 *fPos = pMe->fTarget;
+       } else {
           *fPos = pMe->fTarget + SimRandom();
+       }
      }
      else /* simulate a mispositioned motor */
      {
@@ -126,6 +134,7 @@
     if(fDiff < .0) fDiff = -fDiff;
     pMe->tFinish =  (int)time(&tD) + (int)(fDiff/pMe->fSpeed);
 
+    pMe->fTarget = fVal;
 
     /* in a fifth the failures, simply die, else simply do not find pos */
     if(SimRandom() < (pMe->fFailure/5))
@@ -133,7 +142,6 @@
       return 0;
     }
     
-    pMe->fTarget = fVal;
     return 1;
  }
 /*--------------------------------------------------------------------------*/

sinqhm/SinqHM_srv_main.c

@@ -151,7 +151,7 @@
 
     Dbg_mask = 0;
     Dbg_lev0 = 0;
-    Dbg_lev1 = 0;
+    Dbg_lev1 = 1;
     Dbg_lev2 = 0;
     Dbg_lev3 = 0;
     Cfgn_done = 0;	  /* Force a configuration before we can do anything. */

tas.h

@@ -44,6 +44,7 @@
 #define QL   31 
 #define EN   32 
 #define QM   33
+
 #define HX   34
 #define HY   35
 #define HZ   36
@@ -106,7 +107,7 @@
 #define OUT  90
 #define LOC  91
 #define SWUNIT 92
-#define  SINFO  93
+#define SINFO  93
 #define TEI   94
 #define TKI   95
 #define TEF   96
@@ -116,12 +117,36 @@
 #define TQL  100 
 #define TEN  101 
 #define TQM  102
-#define HX   34
+#define THX  103
-#define HY   35
+#define THY  104
-#define HZ   36
+#define THZ  105
 
+#define TI1  106
+#define TI2  107
+#define TI3  108
+#define TI4  109
+#define TI5  110
+#define TI6  111
+#define TI7  112
+#define TI8  113
+#define DI1  114
+#define DI2  115
+#define DI3  116
+#define DI4  117
+#define DI5  118
+#define DI6  119
+#define DI7  120
+#define DI8  121
+#define DHX  122
+#define DHY  123
+#define DHZ  124
+#define HCONV1 125
+#define HCONV2 126
+#define HCONV3 127
+#define HCONV4 128
+#define POLFIL 129
 
-#define MAXPAR 103
+#define MAXPAR 130
 #define MAXADD 20
 #define MAXEVAR 10
  
@@ -133,6 +158,9 @@ typedef struct {
         pCounter counter;
         pScanData pScan;
         int iPOL; 
+        int iIgnore; /* in order to ignore writing scan points again 
+                        in polarisation mode;
+                    */
         int addOutput[MAXADD];
         int addType[MAXADD];
         int addCount;          

tas.w

@@ -40,6 +40,9 @@ typedef struct {
         pCounter counter;
         pScanData pScan;
         int iPOL; 
+	int iIgnore; /* in order to ignore writing scan points again 
+                        in polarisation mode;
+	            */
         int addOutput[MAXADD];
         int addType[MAXADD];
         int addCount;          
@@ -130,6 +133,7 @@ These are mainly the interpreter interface functions:
 #define QL   31 
 #define EN   32 
 #define QM   33
+
 #define HX   34
 #define HY   35
 #define HZ   36
@@ -192,10 +196,48 @@ These are mainly the interpreter interface functions:
 #define OUT  90
 #define LOC  91
 #define SWUNIT 92
-#define  SINFO  93
+#define SINFO  93
+#define TEI   94
+#define TKI   95
+#define TEF   96
+#define TKF   97
+#define TQH   98
+#define TQK   99
+#define TQL  100 
+#define TEN  101 
+#define TQM  102
+#define THX  103
+#define THY  104
+#define THZ  105
 
-#define MAXPAR 94
+#define TI1  106
+#define TI2  107
+#define TI3  108
+#define TI4  109
+#define TI5  110
+#define TI6  111
+#define TI7  112
+#define TI8  113
+#define DI1  114
+#define DI2  115
+#define DI3  116
+#define DI4  117
+#define DI5  118
+#define DI6  119
+#define DI7  120
+#define DI8  121
+#define DHX  122
+#define DHY  123
+#define DHZ  124
+#define HCONV1 125
+#define HCONV2 126
+#define HCONV3 127
+#define HCONV4 128
+#define POLFIL 129
+
+#define MAXPAR 130
 #define MAXADD 20
+#define MAXEVAR 10
  
 /* --------------------- data structure -------------------------------*/
 @<tasdata@>

tascom.tcl

@@ -5,7 +5,7 @@
 # This file contains the procedures and command definitions for this syntax
 # adaption from SICS to MAD. 
 #
-# Mark Koennecke, December 2000, March 2001
+# Mark Koennecke, December 2000, March 2001, April 2002
 #--------------------------------------------------------------------------
 
 
@@ -36,6 +36,9 @@ if { [info exists tasinit] == 0 } {
   Publish log User
   Publish sz  User
   Publish sw  User
+  Publish pa  User
+  Publish on  User
+  Publish off User
 }
 
 #--------------------------------------------------------------------------
@@ -988,10 +991,44 @@ proc powdersw args {
         }
     }
 }
+#----------------------------------------------------------------------
+# switch polarisation
+proc polsw args {
+    if { [llength $args] > 0 } {
+	switch [lindex $args 0] {
+	    on {
+		lpa 1
+                return "Polarisation mode enabled"
+            }
+            off {
+		lpa 0
+		return "Polarisation mode disabled"
+            }
+            flip {
+		if {[tasSplit [lpa]] == 1 } {
+		    return [polsw off]
+                } else {
+		    return [polsw on] 
+                }
+            }
+            default {
+		error "ERROR: syntax error, only on, off, flip allowed"
+            }
+        }
+    }  else {
+	if { [tasSplit [lpa]] == 1} {
+	    return [format "  %-30s : %-5s" "Polarisation Mode" "on"] 
+        } else {
+	    return [format "  %-30s : %-5s" "Polarisation Mode" "off"] 
+        }
+    }
+}
+
 #-----------------------------------------------------------------------
 # mapping switches to procedures handling them
 
 set switches(powder) powdersw
+set switches(pol)    polsw
 
 #------------------------------------------------------------------------
 # prsw prints switches
@@ -999,7 +1036,7 @@ proc prsw args {
     global switches
     set l [array names switches]
     foreach e $l {
-          append output [eval $switches($e)]
+          append output [eval $switches($e)] "\n"
     }
     return $output
 }
@@ -1055,3 +1092,57 @@ proc sw args {
         clientput [prsw]
     }
 }
+#---------------------------------------------------------------------------
+# pa : set polarization analysis file
+#--------------------------------------------------------------------------
+proc pa args {
+    if {[llength $args] < 1} {
+	error "Usage: pa polarisation analysis file"
+    }
+    set fil [lindex $args 0]
+    if {[string first "." $fil] < 0} {
+	set fil $fil.pal
+    }
+    polfile $fil
+} 
+#--------------------------------------------------------------------------
+# on and off for switching spin flippers
+#-------------------------------------------------------------------------
+proc checkarg args {
+    if {[llength $args] < 1} {
+	error "No flipper to set given"
+    }
+    set flipper [string trim [string tolower [lindex $args 0]]]
+    if { [string compare $flipper f1] == 0 || \
+	    [string compare $flipper f2] == 0} {
+	return $flipper
+    } else {
+        error [format "%s not a recognized flipper" $flipper]
+    }      
+}
+#------------------------------------------------------------------------
+proc on args {
+    set flip [checkarg $args]
+    if { [string compare $flip f1] == 0 } {
+	f1 1
+	set i1val [expr [tasSplit [tki]] * [tasSplit [if1h]]]
+	set i2val [tasSplit [if1v]]
+	return [dr i1 $i1val i2 $i2val]
+    } else {
+	f2 1
+	set i3val [expr [tasSplit [tkf]] * [tasSplit [if2h]]]
+	set i4val [tasSplit [if2v]]
+	return [dr i3 $i3val i4 $i4val]
+    }
+}
+#-------------------------------------------------------------------------
+proc off args {
+    set flip [checkarg $args]
+    if { [string compare $flip f1] == 0 } {
+	f1 0
+	return [dr i1 .0 i2 .0]
+    } else {
+	f2 0
+	return [dr i3 .0 i4 .0]
+    }
+}

tasdrive.c

@@ -13,6 +13,10 @@
   This file implements the MAD dr command for driving.
 
   Mark Koennecke, November 2000
+
+  Polarisation support added.
+
+  Mark Koennecke, April 2002
 ---------------------------------------------------------------------------*/
 #include <stdlib.h>
 #include <assert.h>
@@ -224,7 +228,7 @@ int TASDrive(SConnection *pCon, SicsInterp *pSics, void *pData,
        /*
         do output, first Q-E variables
        */
-       for(i = 0; i < 10; i++)
+       for(i = 0; i < 12; i++)
        {
 	 if(tasMask[i])
 	 {
@@ -256,8 +260,19 @@ int TASDrive(SConnection *pCon, SicsInterp *pSics, void *pData,
          }
        }
        /*
-         missing: output for helmholtz currents 
+         output for magnet currents 
        */
+       for(i = 0; i < 8; i++)
+       {
+	 if(tasTargetMask[9+i])
+	 {
+	   oldPos = readCurrent(tasMotorOrder[CURMOT+i], pCon);
+	   sprintf(pBueffel,"Driving %s from %f to %f",tasMotorOrder[CURMOT+i],
+                   oldPos, tasTargets[9+i]);
+           SCWrite(pCon,pBueffel,eWarning);
+         }
+       }
+       
        status = TASStart(self,pCon,pSics,tasTargets,tasTargetMask);
        if(status == 0)
        {

tasinit.c

@@ -48,6 +48,14 @@ extern char *tasMotorOrder[] = { "a1",
                               "sgl",
                               "sgu",
                               "agl",
+			      "i1" ,
+			      "i2",
+			      "i3",
+			      "i4",
+			      "i5",
+			      "i6",
+			      "i7",
+			      "i8",
                               NULL };
 /*
   In order to initialise the variable array in the TAS data structure we
@@ -159,6 +167,33 @@ extern char *tasVariableOrder[] = {
 			    "tql",
 			    "ten",
 			    "tqm",
+			    "ti1",
+			    "ti2",
+			    "ti3",
+			    "ti4",
+			    "ti5",
+			    "ti6",
+			    "ti7",
+			    "ti8",
+			    "di1",
+			    "di2",
+			    "di3",
+			    "di4",
+			    "di5",
+			    "di6",
+			    "di7",
+			    "di8",
+                            "dhx",
+			    "dhy",
+			    "dhz",
+			    "thx",
+			    "thy",
+			    "thz",
+                            "hconv1",
+			    "hconv2",
+			    "hconv3",
+			    "hconv4",
+			    "polfile",
                             NULL};
 /*---------------------------------------------------------------------
   There is a special feauture in MAD where the count mode is determined

tasscan.c

@@ -233,12 +233,29 @@ static int TASHeader(pScanData self)
           pTAS->tasPar[BY]->fVal,
           pTAS->tasPar[BZ]->fVal);
 
+  /*
+    write currents if in polarisation mode
+  */
+  if(pTAS->iPOL >= 0){
+     fprintf(self->fd,"VARIA: ");
+     iCount = 0;
+     for(i = MAXMOT-8; i < MAXMOT;i++)
+     {
+          fVal = readCurrent(tasMotorOrder[i],self->pCon);
+	  strcpy(pWork2,tasMotorOrder[i]);
+	  strtoupper(pWork2);
+	  fprintf(self->fd,"%-8s=%8.4f, ",pWork2,fVal);
+	  iCount++;
+     }
+     fprintf(self->fd,"\n");  
+  }
+
   /* 
     write motors
   */
   fprintf(self->fd,"VARIA: ");
   iCount = 0;
-  for(i = 0; i < MAXMOT;i++)
+  for(i = 0; i < MAXMOT-8;i++)
   {
      pMot = FindMotor(self->pSics, tasMotorOrder[i]);
      if(pMot)
@@ -273,7 +290,7 @@ static int TASHeader(pScanData self)
   */
   fprintf(self->fd,"ZEROS: ");
   iCount = 0;
-  for(i = 0; i < MAXMOT;i++)
+  for(i = 0; i < MAXMOT-8;i++)
   {
      pMot = FindMotor(self->pSics, tasMotorOrder[i]);
      if(pMot)
@@ -338,8 +355,13 @@ static int TASHeader(pScanData self)
      build both the format and the data header line,
      start with the scan variables 
   */
-  strcpy(pBueffel,"FORMT: (I4,1X,");
+  if(pTAS->iPOL >=0 ){
-  strcpy(pHeader,"  PNT");
+    strcpy(pBueffel,"FORMT: (I4,I4,");
+    strcpy(pHeader,"  PNT PAL");
+  } else {
+    strcpy(pBueffel,"FORMT: (I4,1X,");
+    strcpy(pHeader,"  PNT");
+  }
   for(i = 0; i < self->iScanVar; i++)
   {
      DynarGet(self->pScanVar,i,&pPtr);
@@ -409,6 +431,14 @@ static int TASScanPoint(pScanData self, int iPoint)
   long m1, m2, m3, cnts;
   char pBueffel[1024], pWork[80];
 
+  /*
+    after polarisation analysis, this has to be ignored as it is called 
+    another time from the ScanLoop
+  */
+  if(pTAS->iIgnore){
+    return 1;
+  }
+
   /*
     reopen file for appending
   */
@@ -424,7 +454,7 @@ static int TASScanPoint(pScanData self, int iPoint)
   */
   if(pTAS->iPOL > 0)
   {
-    sprintf(pBueffel,"%3d.%1d",iPoint+1,pTAS->iPOL);
+    sprintf(pBueffel,"%3d %3d",iPoint+1,pTAS->iPOL);
   }
   else
   {
@@ -610,8 +640,39 @@ static int TASScanDrive(pScanData self, int iPoint)
  ------------------------------------------------------------------------*/
 static int RunPolScan(pScanData self, int iPoint)
 {
-  SCWrite(self->pCon,"ERROR: polarized scans not yet implemented",eError);
+  FILE *fd = NULL;
-  return 0;
+  char buffer[132];
+  pTASdata pTAS = (pTASdata)self->pSpecial;
+
+  fd = fopen(pTAS->tasPar[POLFIL]->text,"r");
+  if(!fd){
+    SCWrite(self->pCon,"ERROR: failed to open polarisation analysis file",
+	    eError);
+    return 0;
+  }
+  pTAS->iPOL = 0;
+  while(fgets(buffer,131,fd) != NULL){
+    /*
+      ignore all errors here 
+    */
+    InterpExecute(self->pSics,self->pCon,buffer);
+    strtolower(buffer);
+    if(strstr(buffer,"co") != NULL){
+      pTAS->iPOL++;
+      self->WriteScanPoints(self,iPoint);
+    }
+    /*
+      but allow for interrupts
+    */
+    if(SCGetInterrupt(self->pCon) != eContinue){
+      break;
+    }
+  }
+  pTAS->iIgnore = 1;
+  fclose(fd);
+  pTAS->iPOL = 1;
+
+  return 1;
 }
 /*---------------------------------------------------------------------------
     TASScanCount starts the counter for a TAS scan or runs the polarization
@@ -624,6 +685,7 @@ static int TASScanCount(pScanData self, int iPoint)
   int status, iRet;
   Status eOld;
 
+  pTAS->iIgnore = 0;
   /*
     call the polarisation scan function if necessary
   */
@@ -1290,6 +1352,7 @@ int TASScan(SConnection *pCon, SicsInterp *pSics, void *pData,
    */
    ClearScanVar(pTAS->pScan);   
    pTAS->scanVar[0] = '\0';
+   
 
    /*
     at this stage all simple variables have been set. Now we get the values
@@ -1302,6 +1365,15 @@ int TASScan(SConnection *pCon, SicsInterp *pSics, void *pData,
    pTAS->pScan->pCon = pCon;
    pTAS->pScan->pSics = pSics;
 
+   /*
+     check for polarisation 
+   */
+   if(pTAS->tasPar[LPA]->iVal == 1){
+     pTAS->iPOL = 1;
+   } else {
+     pTAS->iPOL = -1;
+   }
+
    /* 
      now parse the scan variables 
    */ 

tassim.tcl

@@ -217,6 +217,15 @@ VarMake QM  Float User
 VarMake DQM Float User
 VarMake DT  Float User
 VarMake LPA Int User
+VarMake DI1 Float User
+VarMake DI2 Float User
+VarMake DI3 Float User
+VarMake DI4 Float User
+VarMake DI5 Float User
+VarMake DI6 Float User
+VarMake DI7 Float User
+VarMake DI8 Float User
+
 #--------------------------------------------------------------------------
 #       Curvature variables
 VarMake MRX1  Float Mugger

tastest.tcl

@@ -166,6 +166,10 @@ VarMake IF1V Float User
 VarMake IF2V Float User
 VarMake IF1H Float User
 VarMake IF2H Float User
+IF1V 1.0
+IF1H 1.0
+IF2V 1.0
+IF2H 1.0
 VarMake HELM Float User
 VarMake HX   Float User
 VarMake HY   Float User
@@ -231,6 +235,35 @@ VarMake QM  Float User
 VarMake DQM Float User
 VarMake DT  Float User
 VarMake LPA Int User
+
+#----------- Current increments
+VarMake DI1 Float User
+VarMake DI2 Float User
+VarMake DI3 Float User
+VarMake DI4 Float User
+VarMake DI5 Float User
+VarMake DI6 Float User
+VarMake DI7 Float User
+VarMake DI8 Float User
+VarMake DHX Float User
+VarMake DHY Float User
+VarMake DHZ Float User
+
+
+#----------- Current Targets
+VarMake TI1 Float User
+VarMake TI2 Float User
+VarMake TI3 Float User
+VarMake TI4 Float User
+VarMake TI5 Float User
+VarMake TI6 Float User
+VarMake TI7 Float User
+VarMake TI8 Float User
+VarMake THX Float User
+VarMake THY Float User
+VarMake THZ Float User
+
+
 #--------------------------------------------------------------------------
 #       Curvature variables
 VarMake MRX1  Float Mugger
@@ -238,6 +271,21 @@ VarMake MRX2  Float Mugger
 VarMake ARX1  Float Mugger
 VarMake ARX2  Float Mugger
 
+#-------------------------------------------------------------------------
+#      Conversion factors from gauss to ampere for Helmholtz calculations
+VarMake HCONV1  Float Mugger
+VarMake HCONV2  Float Mugger
+VarMake HCONV3  Float Mugger
+VarMake HCONV4  Float Mugger
+HCONV1 1.0
+HCONV2 1.0
+HCONV3 1.0
+HCONV4 1.0
+
+#------------------------------------------------------------------------
+#      Polarisation file
+VarMake polfile Text User
+
 #-------------------------------------------------------------------------
 #       Datafile generation variables
 VarMake SicsDataPath Text Mugger

tasu.h

@@ -15,7 +15,9 @@ extern char *tasMotorOrder[];
 extern char *tasVariableOrder[];
 
 /* maximum number of motors in the list */
-#define MAXMOT 19
+#define MAXMOT 27
+/* offset to the currents, if available */
+#define CURMOT (MAXMOT - 8) 
 
 
 /*
@@ -28,10 +30,15 @@ extern char *tasVariableOrder[];
 #define ETARGET 94
 
 int isTASMotor(char *val);
+int isTASCurrent(char *val);
 int isTASVar(char *val);
 int isTASEnergy(char *val);
 void prepare2Parse(char *line);
 int tasNumeric(char *pText);
+float readCurrent(char *val, SConnection *pCon);
+void startCurrent(char *val, SConnection *pCon, float fVal);
+void readConversionFactors(pTASdata self,float convH[4]);
+
 int TASCalc(pTASdata self, SConnection *pCon,
             unsigned char tasMask[10],
             float motorTargets[20],

tasutil.c

@@ -15,6 +15,10 @@
   TAS settings..
 
   Mark Koennecke, November 2000
+
+  Polarisation support added.
+
+  Mark Koennecke, April 2002
 ---------------------------------------------------------------------------*/
 #include <stdlib.h>
 #include <assert.h>
@@ -50,6 +54,21 @@ int isTASMotor(char *val)
   }
   return -1;
 }
+/*------------------------------------------------------------------------
+ return number if val is a current variable, else -1
+ -----------------------------------------------------------------------*/
+int isTASCurrent(char *val){
+  int test;
+  test = isTASMotor(val);
+  if(test < 0){
+    return test;
+  }
+  if(test > 18){
+    return test;
+  } else {
+    return -1;
+  }
+}
 /*--------------------------------------------------------------------------
  isTASVar finds out if the given string is a TAS variable and returns its
   index if this is the case. Else -1 will be returned.
@@ -333,9 +352,9 @@ int TASCalc(pTASdata self, SConnection *pCon,
   qhkl[1] = (real)self->tasPar[TQK]->fVal;
   qhkl[2] = (real)self->tasPar[TQL]->fVal;
   en = (real)self->tasPar[TEN]->fVal;
-  hx = (real)self->tasPar[HX]->fVal;
+  hx = (real)self->tasPar[THX]->fVal;
-  hy = (real)self->tasPar[HY]->fVal;
+  hy = (real)self->tasPar[THY]->fVal;
-  hz = (real)self->tasPar[HZ]->fVal;
+  hz = (real)self->tasPar[THZ]->fVal;
   f = (real)2.072; /* energy unit meV */
   if1 = (integer)self->tasPar[F1]->iVal;
   if2 = (integer)self->tasPar[F2]->iVal;
@@ -343,8 +362,17 @@ int TASCalc(pTASdata self, SConnection *pCon,
   {
      ldk[i] = (logical)tasMask[i];
   }
- ldh = (logical)tasMask[8];
+  if(if1 > 0 || if2 > 0){
- ldf = (logical)tasMask[9];
+    ldf = 1;
+  } else {
+    ldf = 0;
+  }
+  if(tasMask[9] || tasMask[10] || tasMask[11] ) {
+    ldh = 1;
+  } else {
+    ldh = 0;
+  }
+
  if(self->tasPar[LPA]->iVal > 0)
     lpa = (logical)1;
  else
@@ -364,15 +392,15 @@ int TASCalc(pTASdata self, SConnection *pCon,
   isa = (integer)self->tasPar[SA]->iVal;
 
   /*
-   initialize the helmholts currents. This needs work when 
+   initialize the magnet currents. 
-   polarisation analysis is really supported.
   */
   for(i = 0; i < 4; i++)
   {
     helmconv[i] = .0;
-    currents[i] = .0;
+    currents[i] = readCurrent(tasMotorOrder[CURMOT+i],pCon);
-    currents[i+4] = .0;
+    currents[i+4] = readCurrent(tasMotorOrder[CURMOT + i + 4],pCon);
   }
+  readConversionFactors(self,helmconv);
 
   /* 
     initalise the motorMasks to 0.
@@ -412,6 +440,9 @@ int TASCalc(pTASdata self, SConnection *pCon,
     motorTargets[i] = angles[i];
     motorMask[i] = ldra[i];    
   }
+  /*
+    these additional motors are the curvature motors
+  */
   motorMask[6] = l_RM;
   motorTargets[6] = tRM;
   motorMask[8] = l_RA;
@@ -420,10 +451,19 @@ int TASCalc(pTASdata self, SConnection *pCon,
   {
     motorTargets[9+i] = currents[i];
   }  
-  for(i = 0; i < 4; i++)
+  if(ldh){ 
-  {
+    /* currents must be driven */
-    motorTargets[17+i] = helmconv[i];
+    for( i = 0; i < 4; i++){
-  }  
+      motorMask[13+i] = 1;
+    }
+  }
+  if(ldf){ 
+    /* currents must be driven */
+    for( i = 0; i < 4; i++){
+      motorMask[9+i] = 1;
+    }
+  }
+
   self->tasPar[TEI]->fVal = (float)ei;
   self->tasPar[TKI]->fVal = (float)aki;
   self->tasPar[TEF]->fVal = (float)ef;
@@ -485,9 +525,13 @@ int TASStart(pTASdata self, SConnection *pCon, SicsInterp *pSics,
   }
 
   /*
-    missing: set the magnet currents. In order to do this, I need more
+    start magnet currents.
-    info about the magnets involved and how to address them.
   */   
+  for(i = 0; i < 8; i++){
+    if(motorMask[9+i] == 1){
+      startCurrent(tasMotorOrder[CURMOT+i],pCon,motorTargets[9+i]);
+    }
+  }
 
   return 1;
 }      
@@ -577,15 +621,15 @@ int TASUpdate(pTASdata self, SConnection *pCon)
   }
 
   /*
-   initialize magnet things to harmless. TODO: update to read properly
+   read magnet currents.
-   when installed.
   */
   for(i = 0; i < 4; i++)
   {
-    helmCurrent[i] = .0;
-    helmCurrent[4+i] = .0;
     convH[i] = .0;
+    helmCurrent[i] = readCurrent(tasMotorOrder[CURMOT+i],pCon);
+    helmCurrent[4+i] = readCurrent(tasMotorOrder[CURMOT+i+4],pCon);
   }
+  readConversionFactors(self,convH);
 
   /*
    collect all the other machine parameters needed for a call to 
@@ -650,6 +694,9 @@ int TASUpdate(pTASdata self, SConnection *pCon)
   self->tasPar[HY]->fVal = hy;
   self->tasPar[HZ]->fVal = hz;
   self->tasPar[QM]->fVal = qm;
+  self->tasPar[HX]->fVal = hx;
+  self->tasPar[HY]->fVal = hy;
+  self->tasPar[HZ]->fVal = hz;
 
   /*
     now check the analyzer or monochromator angles
@@ -678,7 +725,45 @@ int TASUpdate(pTASdata self, SConnection *pCon)
       SCWrite(pCon,pBueffel,eWarning);
     }
   }
+
   return 1;
 }
+/*-----------------------------------------------------------------------
+ readCurrent tries to read the value of one of the magnet currents.
+ All errors are ignored because most of the time currents will not be 
+ present in the system.
+ -----------------------------------------------------------------------*/
+float readCurrent(char *val, SConnection *pCon){
+  pIDrivable pDriv;
+  CommandList *pCom;
+  pDummy pDum;
 
+  pCom = FindCommand(pServ->pSics,val);
+  if(pCom != NULL){
+    pDriv = GetDrivableInterface(pCom->pData);
+    if(pDriv != NULL){
+      return pDriv->GetValue(pCom->pData,pCon);
+    }
+  }
+  return .0;
+}
+/*-----------------------------------------------------------------------
+ startCurrent starts driving a current to a new value
+ All errors are ignored because most of the time currents will not be 
+ present in the system.
+ -----------------------------------------------------------------------*/
+void startCurrent(char *val, SConnection *pCon, float fVal){
+  StartMotor(pServ->pExecutor,pServ->pSics,pCon,
+	       val,fVal);
+}
 
+/*-----------------------------------------------------------------------
+ readConversionFactors updates the array given as a parameter with the 
+ values of the Gauss->Ampere conversion factors
+ -------------------------------------------------------------------------*/
+void readConversionFactors(pTASdata self,float convH[4]){
+  convH[0] = self->tasPar[HCONV1]->fVal;
+  convH[1] = self->tasPar[HCONV2]->fVal;
+  convH[2] = self->tasPar[HCONV3]->fVal;
+  convH[3] = self->tasPar[HCONV4]->fVal;
+}