Changeset 6712 for trunk/MagicSoft/Simulation/Detector/Camera

Timestamp:

03/02/05 21:45:06 (20 years ago)

Author:

moralejo

Message:

 Changed meaning of pmt_jitter: now it is not the jitter per phe-, but
 the jitter of the total pulse in each pixel (and independent from pixel
 to pixel).

 The delay between the high and low gain peaks can be set now to a non
 integer number of FADC slices. Now by default it is 16.5.

File:

• trunk/MagicSoft/Simulation/Detector/Camera/camera.cxx (modified) (9 diffs)

trunk/MagicSoft/Simulation/Detector/Camera/camera.cxx

@@ -1 +1 @@
 ////!////////////////////////////////////////////////////////////////////
 //
-// camera                
+// camera               
 //
 // @file        camera.cxx
@@ -221 +221 @@
 
 //@: PMT time jitter
-static  float pmt_jitter=0.25;
+static  float pmt_jitter;
 
   
@@ -4135 +4135 @@
 
   float time;
-  float pmtjit;
+  float *pmtjit;
+
+  pmtjit = new float[camgeom->GetNumPixels()];
 
   // reset variables
 
-  for ( i=0; i<camgeom->GetNumPixels(); ++i )
-    nphe[i] = 0.0;
-
+  TRandom random;
+  random.SetSeed(seed);
+  
+  for ( i = 0; i < camgeom->GetNumPixels(); ++i )
+    {
+      nphe[i] = 0.0;
+      //
+      // PMT time jitter: gaussian, not negative (MTrigger::FillShow does
+      // not accept negative times!)
+      //
+      do 
+        pmtjit[i] = random.Gaus(3.*pmt_jitter, pmt_jitter);
+      while (pmtjit[i] < 0.);
+    }
 
   *itotnphe = 0;
@@ -4147 +4160 @@
 
   radius_mm = camgeom->GetMaxRadius();
-
-  TRandom random;
-  random.SetSeed(seed);
 
   float C1, C2, C3, rho;
@@ -4319 +4329 @@
     nphe[ipixnum] += 1.0;
 
-    //
-    // PMT time jitter: gaussian, not negative (MTrigger::FillShow does
-    // not accept negative times!)
-    //
-    do 
-      pmtjit = random.Gaus(3.*pmt_jitter, pmt_jitter);
-    while(pmtjit<0.);
-
     // store the new photoelectron
 
     fadc->Fill(ipixnum,
-               (time-*tmin_ns) + pmtjit + fadc_jitter, 
-               trigger->FillShow(ipixnum, time-*tmin_ns + pmtjit + fadc_jitter),
+               (time-*tmin_ns) + pmtjit[ipixnum] + fadc_jitter, 
+               trigger->FillShow(ipixnum, time-*tmin_ns + pmtjit[ipixnum] + fadc_jitter),
                !((*camgeom)[ipixnum].GetD()>(*camgeom)[0].GetD()));
     
@@ -4859 +4861 @@
   float radius_mm, focal_dist_mm;
   int   total_photons;
-  float pmtjit;
+  float *pmtjit;
 
   static UInt_t seed = (UInt_t)(get_seeds(0)*get_seeds(1));
 
+  pmtjit = new float[camgeom->GetNumPixels()];
+
   // reset variables
 
+  TRandom random;
+  random.SetSeed(seed);
+
   for ( uint i = 0; i < camgeom->GetNumPixels(); i++ )
-    nphe[i] = 0.0;
+    {
+      nphe[i] = 0.0;
+
+      //
+      // PMT time jitter: gaussian, not negative (MTrigger::FillShow does
+      // not accept negative times!)
+      //
+      do 
+        pmtjit[i] = random.Gaus(3.*pmt_jitter, pmt_jitter);
+      while(pmtjit[i]<0.);
+    }
 
   *itotnphe = 0;
   *nphot = 0;
-
-  TRandom random;
-  random.SetSeed(seed);
 
   //
@@ -4887 +4901 @@
   // dish to the edge of the camera:
   float cos_epsilon_max = cos(atan2(radius_mm, focal_dist_mm));
+
 
 
@@ -5029 +5044 @@
       nphe[ipixnum] += 1.;
 
-      //
-      // PMT time jitter: gaussian, not negative (MTrigger::FillShow does
-      // not accept negative times!)
-      //
-      do 
-        pmtjit = random.Gaus(3.*pmt_jitter, pmt_jitter);
-      while(pmtjit<0.);
-
       // store the new photoelectron
 
-      fadc->Fill(ipixnum, time + pmtjit + fadc_jitter, 
-                 trigger->FillShow(ipixnum, time + pmtjit + fadc_jitter),
+      fadc->Fill(ipixnum, time + pmtjit[ipixnum] + fadc_jitter, 
+                 trigger->FillShow(ipixnum, time + pmtjit[ipixnum] + fadc_jitter),
                  !((*camgeom)[ipixnum].GetD()>(*camgeom)[0].GetD()));
     
@@ -5061 +5068 @@
 //
 // $Log: not supported by cvs2svn $
+// Revision 1.96  2005/03/01 21:57:01  moralejo
+//
+//  Set parameters for the shape of the low gain pulse in the FADC to more
+//  precise values. Low gain pulse from real data was provided by H. Bartko.
+//
 // Revision 1.95  2005/03/01 20:13:17  moralejo
 //  Added comments