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None Problem with GetGlobalTime()/GetLocalTime() for Beta decay of Bi-214 

Forum: Event and Track Management
Date: 01 Dec, 2015
From: <xuemx@mail.ustc.edu.cn>

Dear experts,
  I am doing a simulation of beta decay, and I use the nuclide Bi-214. Then I try to get the time of final tracks, including their global time and local time.
  The result is listed as follows:
*********************************************************************************************************
* G4Track Information:   Particle = Bi214[0.0],   Track ID = 1,   Parent ID = 0
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng    Volume     Process
    0  0.000 fm  0.000 fm  0.000 fm  0.000 eV  0.000 eV  0.000 fm  0.000 fm    Crystal   initStep
    1  0.000 fm  0.000 fm  0.000 fm  0.000 eV  0.000 eV  0.000 fm  0.000 fm    Crystal   RadioactiveDecay
    :----- List of secondaries ----------------
   Po214[1847.4]:  energy =2.3193 eV   time =28.1897 min
       anti_nu_e:  energy =665.1166 keV  time =28.1897 min
              e-:  energy =759.4501 keV  time =28.1897 min
    :------------------------------------------

---GlobalTime=1691383325280.786865234375000000
---LocalTime=1691383325280.786865234375000000-----
---TrackID=1

*********************************************************************************************************
* G4Track Information:   Particle = e-,   Track ID = 4,   Parent ID = 1
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng    Volume     Process
    0  0.000 fm  0.000 fm  0.000 fm 759.450 keV 0.000 eV  0.000 fm  0.000 fm    Crystal   initStep
    1 -72.139 um 112.493 um -71.529 um 563.858 keV195.592 keV241.345 um 241.345 um    Crystal        eIoni
    2  1.594 um 141.650 um -254.052 um 406.879 keV156.979 keV212.126 um 453.471 um    Crystal        eIoni
    3 57.560 um 205.056 um -354.044 um 241.722 keV165.157 keV184.082 um 637.553 um    Crystal        eIoni
    4  4.874 um 276.117 um -448.183 um 80.551 keV161.171 keV135.196 um 772.749 um    Crystal        eIoni
    5  3.230 um 277.448 um -446.645 um  0.000 eV 80.551 keV26.219 um 798.968 um    Crystal        eIoni

---GlobalTime=1691383325280.787597656250000000
---LocalTime=0.000658477564203301-----
---TrackID=4

*********************************************************************************************************
* G4Track Information:   Particle = anti_nu_e,   Track ID = 3,   Parent ID = 1
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng    Volume     Process
    0  0.000 fm  0.000 fm  0.000 fm 665.117 keV 0.000 eV  0.000 fm  0.000 fm    Crystal   initStep
    1  9.782 mm -1.000 cm  7.485 mm 665.117 keV 0.000 eV  1.587 cm  1.587 cm    Crystal   Transportation
    2  3.083 cm -3.152 cm  2.359 cm 665.117 keV 0.000 eV  3.413 cm  5.000 cm      World   OutOfWorld

---GlobalTime=1691383325280.953613281250000000
---LocalTime=0.166782047599076055-----
---TrackID=3

*********************************************************************************************************
* G4Track Information:   Particle = Po214[1847.4],   Track ID = 2,   Parent ID = 1
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng    Volume     Process
    0  0.000 fm  0.000 fm  0.000 fm  2.319 eV  0.000 eV  0.000 fm  0.000 fm    Crystal   initStep
    1  0.000 fm  0.000 fm  0.000 fm  2.319 eV  2.319 eV  0.000 fm  0.000 fm    Crystal   RadioactiveDecay
    :----- List of secondaries ----------------
    Po214[609.3]:  energy =2.3193 eV   time =28.1897 min
           gamma:  energy =1.2381 MeV  time =28.1897 min
    :------------------------------------------

---GlobalTime=1691383325280.786865234375000000
---LocalTime=0.000000000000000000-----
---TrackID=2
 

  The question is that: for beta decay, why the final tracks do not emit at the same time? Also, what is the definition of Local Time in the G4Track class.
  Thank you in advance.
  Good luck for you.

Best regards,
Pigxue

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1 Feedback: Re: Problem with GetGlobalTime()/GetLocalTime() for Beta decay of Bi-214   (Gumplinger Peter - 03 Dec, 2015)
(_ None: Re: Problem with GetGlobalTime()/GetLocalTime() for Beta decay of Bi-214   (xuemx@mail.ustc.edu.cn - 08 Dec, 2015)
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