[Gate-users] ion source

[Andrew Smith]

Dear Gate users,

I have a problem simulating ion sources (no hits detected). I tried to use
both vGate and Gate that I've installed myself (latest versions).
Sources like backtoback seem to work correctly, even though gate crashes
when I am trying to use fastI124 (not sure if it is the same problem).

 This is one of the ion source files that I tried.

/gate/source/addSource ytt86
/gate/source/ytt86/setActivity 500000000. becquerel
/gate/source/ytt86/gps/particle ion
/gate/source/ytt86/gps/ion 39 86 0 0
/gate/source/ytt86/gps/energytype Mono
/gate/source/ytt86/gps/monoenergy 0. MeV
/gate/source/ytt86/gps/angtype iso
/gate/source/ytt86/gps/number 1
/gate/source/ytt86/gps/centre 0. 0. 0. cm
/gate/source/ytt86/gps/type Volume
/gate/source/ytt86/gps/shape Sphere
/gate/source/ytt86/gps/radius 0.1 mm


 I've checked that the path to Geant4's Radioactivedecay data files is
correct. Is there anything else what could be wrong?

Here is the typical output message from the gate:

[
[G4]
[G4]
*********************************************************************************************************
[G4] * G4Track Information:   Particle = Y86[0.0],   Track ID = 1,   Parent
ID = 0
[G4]
*********************************************************************************************************
[G4]
[G4] Step#    X(mm)    Y(mm)    Z(mm) KinE(MeV)  dE(MeV) StepLeng TrackLeng
 NextVolume ProcName
[G4]     0  -0.0553  -0.0236  -0.0487         0        0        0         0
 world_phys initStep
[G4]     1  -0.0553  -0.0236  -0.0487         0        0        0         0
 world_phys User Limit
[G4] Track (trackID 1, parentID 0) is processed with stopping code 2
[G4] ### pop requested out of 0 stacked tracks.
[G4] ### 0 waiting tracks are re-classified to
[G4]      0 urgent tracks and 0 waiting tracks.
[G4] NULL returned from G4StackManager.
[G4] Terminate current event processing.

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

Thank you in advance.