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Question "nan" for global time of track 

Keywords: nan global time
Forum: Event and Track Management
Date: 26 Nov, 2003
From: Myung <ssmyung@yahoo.com>

Hi,

I simulated Radioactive decay of Ra226 using Geant4.5.1.p01 on Redhat linux 8.0/gcc3.2. As you see below, I have "nan" for energy and global time for tracks quite often. When I execute the same program on linux6.1/egcs-2.91.66 there is no such thing.

I ran with G4NO_OPTIMISE both 1 and 0, but these "nan" didn't go away.

I'll appreciate if you explain why do I get these and how to solve it?

Thank you in advance,

Myung

----------------------------------------------------

/tracking/verbose 1

/run/initialize

/grdm/analogueMC 1

/grdm/fBeta 1

/gun/particle ion

/gun/ion 88 226 0

/gun/energy 0. keV

/run/beamOn 10

===>> Gtime(min) is global time in minute and it is G4double. . . .

*********************************************************************************************************
* G4Track Information:   Particle = Bi214[0.0],   Track ID = 8,   Parent ID = 6
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng  NextVolu   Process
    0   3.15 Ang -1.14 nm  -1.58 nm  0.686 eV      0 eV      0 fm      0 fm        csi   initStep
    1   3.15 Ang -1.14 nm  -1.58 nm      0 eV  0.686 eV 5.01e+03 fm 5.01e+03 fm        csi     hIoni
Gtime(min)=2059030104.3 
    2   3.15 Ang -1.14 nm  -1.58 nm      0 eV      0 eV      0 fm 5.01e+03 fm        csiRadioactiveDecay
*********************************************************************************************************
* G4Track Information:   Particle = gamma,   Track ID = 18,   Parent ID = 8
*********************************************************************************************************

Step# X Y Z KineE dEStep StepLeng TrakLeng NextVolu Process

                                 ===>>
    0   3.15 Ang -1.14 nm  -1.58 nm    nan eV      0 eV      0 fm      0 fm        csi   initStep
    1   -620 mum -1.65 cm   1.24 cm      0 eV      0 eV   2.06 cm   2.06 cm        csiLowEnConversion
Gtime(min)=2059030107.4 
*********************************************************************************************************
* G4Track Information:   Particle = e+,   Track ID = 22,   Parent ID = 18
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng  NextVolu   Process
    0   -620 mum -1.65 cm   1.24 cm      0 eV      0 eV      0 fm      0 fm        csi   initStep
    1   -620 mum -1.65 cm   1.24 cm      0 eV      0 eV      0 fm      0 fm        csi   annihil
===>>
Gtime(min)=nan 
*********************************************************************************************************
* G4Track Information:   Particle = gamma,   Track ID = 24,   Parent ID = 22
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng  NextVolu   Process
    0   -620 mum -1.65 cm   1.24 cm    511 keV     0 eV      0 fm      0 fm        csi   initStep
    1   2.58 mm  -1.77 cm   1.52 cm    283 keV     0 eV   4.46 mm   4.46 mm        csiLowEnCompton
===>>
Gtime(min)=nan 
    2    6.8 mm  -1.46 cm   1.35 cm      0 eV   4.86 keV  5.53 mm   9.99 mm        csiLowEnPhotoElec
Gtime(min)=nan 
*********************************************************************************************************
* G4Track Information:   Particle = gamma,   Track ID = 23,   Parent ID = 22
*********************************************************************************************************

Step#      X         Y         Z        KineE    dEStep   StepLeng  TrakLeng  NextVolu   Process
    0   -620 mum -1.65 cm   1.24 cm    511 keV     0 eV      0 fm      0 fm        csi   initStep
    1  -1.08 cm  -1.26 cm   3.32 mm    330 keV     0 eV   1.42 cm   1.42 cm        csiLowEnCompton
===>>
Gtime(min)=nan 
    2  -1.04 cm  -1.25 cm    1.9 mm      0 eV    748 eV   1.46 mm   1.56 cm        csiLowEnPhotoElec
Gtime(min)=nan 

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