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Question Missing energy in detectors 

Forum: Hits, Digitization and Pileup
Date: 09 Jun, 2010
From: RY <RY>

Hi,

Following up on yesterday's post. So now I have my two sensitive detectors but when I attempt to extract the total energy deposited per event in each they seem very low. Here is a sample output with 10 events of 10 MeV electrons. I've attached one the detector's hit file, the SD file, and the event action.

Start Run processing.
>>> Event 0
---- BGO Hit # 0
 Position (-2.48496,-0.273819,-1.51252) [cm]
 Momentum (-3069.3,881.426,512.363) [keV]
 Energy   3274.32 [keV]
 PID      11
---- BGO Hit # 1
 Position (-2.41095,-0.661305,-2.01955) [cm]
 Momentum (-749.305,-174.002,-574.753) [keV]
 Energy   960.248 [keV]
 PID      22
Total BGO EDep: 163.918 keV
Total Plastic EDep: 0 keV
>>> Event 1
Total BGO EDep: 0 keV
Total Plastic EDep: 0 keV
>>> Event 2
---- BGO Hit # 0
 Position (-2.36527,0.809627,-1.87831) [cm]
 Momentum (-2656.66,3521.23,-1947.39) [keV]
 Energy   4848.74 [keV]
 PID      11
---- BGO Hit # 1
 Position (2.22631,1.13734,5.40639) [cm]
 Momentum (126.873,7.66751,199.654) [keV]
 Energy   236.68 [keV]
 PID      22
Total BGO EDep: 215.596 keV
---- Plastic Hit # 0
 Position (-2.34533,0.865703,-1.82187) [cm]
 Momentum (2285.51,1709.17,1815.42) [keV]
 Energy   3420.77 [keV]
 PID      11
---- Plastic Hit # 1
 Position (-2.34708,0.860947,-1.79057) [cm]
 Momentum (126.873,7.66751,199.654) [keV]
 Energy   236.68 [keV]
 PID      22
Total Plastic EDep: 1011.78 keV
>>> Event 3
---- BGO Hit # 0
 Position (1.6509892,-1.8772945,-1.260452) [cm]
 Momentum (2860.8769,-4733.5422,-1250.1029) [keV]
 Energy   5693.4098 [keV]
 PID      11
---- BGO Hit # 1
 Position (0.29233339,-2.4828494,-0.88852987) [cm]
 Momentum (-62.873895,-165.97165,-23.803339) [keV]
 Energy   179.0707 [keV]
 PID      22
Total BGO EDep: 290.12437 keV
Total Plastic EDep: 0 keV
>>> Event 4
---- BGO Hit # 0
 Position (1.2283081,-2.1774433,-1.2635919) [cm]
 Momentum (48.825397,-51.594127,-8.9073896) [keV]
 Energy   71.590606 [keV]
 PID      22
---- BGO Hit # 1
 Position (1.1969204,-2.1948534,-6.9308089) [cm]
 Momentum (2.2548706,-245.95149,-332.97659) [keV]
 Energy   413.96936 [keV]
 PID      22
---- BGO Hit # 2
 Position (1.9383122,1.5789065,-4.9155678) [cm]
 Momentum (38.615519,38.869086,-93.343511) [keV]
 Energy   108.23574 [keV]
 PID      22
Total BGO EDep: 192.155 keV
Total Plastic EDep: 0 keV
>>> Event 5
---- BGO Hit # 0
 Position (-1.9580319,-1.5543845,4.5052626) [cm]
 Momentum (-5.6690046,-10.003118,51.525932) [keV]
 Energy   52.793197 [keV]
 PID      22
Total BGO EDep: 16.388 keV
Total Plastic EDep: 0 keV
>>> Event 6
---- BGO Hit # 0
 Position (-2.2100846,-1.1685572,0.037529932) [cm]
 Momentum (-698.0404,-679.61859,-2195.3335) [keV]
 Energy   2455.5551 [keV]
 PID      11
Total BGO EDep: 64.804693 keV
---- Plastic Hit # 0
 Position (-2.2011348,-1.1853294,0.019613136) [cm]
 Momentum (2109.6743,15.493278,108.4249) [keV]
 Energy   2173.44 [keV]
 PID      11
Total Plastic EDep: 482.11563 keV
>>> Event 7
---- BGO Hit # 0
 Position (0.44986858,2.4591906,-0.22422699) [cm]
 Momentum (1693.7333,4935.6928,-2171.5631) [keV]
 Energy   5675.0861 [keV]
 PID      11
Total BGO EDep: 207.80331 keV
---- Plastic Hit # 0
 Position (0.49759424,2.4499796,-0.37115855) [cm]
 Momentum (704.05969,-2854.619,556.97958) [keV]
 Energy   3035.7694 [keV]
 PID      11
Total Plastic EDep: 605.29891 keV
>>> Event 8
---- BGO Hit # 0
 Position (-2.1355905,-1.2997127,1.5065005) [cm]
 Momentum (-2683.8048,-3214.8249,2677.447) [keV]
 Energy   4996.7739 [keV]
 PID      11
---- BGO Hit # 1
 Position (-2.1053211,-1.3481925,1.5153431) [cm]
 Momentum (-9.1648833,-9.3957308,11.923366) [keV]
 Energy   17.732499 [keV]
 PID      22
Total BGO EDep: 226.23144 keV
Total Plastic EDep: 0 keV
>>> Event 9
---- BGO Hit # 0
 Position (-2.0468064,1.4354733,1.3150694) [cm]
 Momentum (-3157.5602,3956.4789,949.18737) [keV]
 Energy   5175.5181 [keV]
 PID      11
---- BGO Hit # 1
 Position (-2.4838003,-0.28414075,2.7477952) [cm]
 Momentum (-54.368981,-275.87959,214.40461) [keV]
 Energy   353.6027 [keV]
 PID      22
Total BGO EDep: 159.24879 keV
---- Plastic Hit # 0
 Position (-2.1902719,1.2052837,1.5902631) [cm]
 Momentum (-54.368981,-275.87959,214.40461) [keV]
 Energy   353.6027 [keV]
 PID      22
Total Plastic EDep: 0 keV
Run terminated.
Run Summary
  Number of events processed : 10
  User=0.031s Real=0s Sys=0.047s

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/06/09/17.44-8769-EventAction.cc
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/06/09/17.44-84445-BGOSD.cc
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/06/09/17.44-12592-BGOHit.cc

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