[gate-users] Re:Re: no e-/e+ tracking!

[Bastien Gu é rin]

Dear Assen,

the majority of the e- I want to get rid of are ejected by photoelectric
effect in the BGO and then tracked in that material. It is then not a
problem of a too low generation threshold.
The command which should prevent the tracking on these electrons is:
/gate/physics/setDeltaRayCut 10. MeV
and I don't understand why I still see e- in my ASCII gateHits.run files.

Am I the only one to have this problem?

All the best,

BG

----

Bastien Guerin
PhD candidate, University of Paris
Visiting Fellow, Harvard University
work: 617-525-6629
urgent: 617-817-2762

> 
> You may get e- with range larger than 100 mm in air (it is a global
> generation threshold).
> Make it 100 m.  But  that will save you only a little bit of time.
> Assen
> 
> Bastien Gu?rin wrote:
> 
>> Hi,
>> 
>> does anyone knows how to completely turn off the tracking of e+ and e- in
>> Gate? Even with the following parameters I still record e+/e- interactions
>> in my ASCII gateHits.run outputs, whereas I don't need them and it's highly
>> CPU consuming.
>> 
>> #       P H Y S I C S
>> 
>> 
>> #       EM  P R O C E S S
>> /gate/physics/gamma/selectRayleigh inactive
>> /gate/physics/gamma/gammaConversion inactive
>> /gate/physics/gamma/selectPhotoelectric standard
>> /gate/physics/gamma/selectCompton lowenergy
>> 
>> #       I N A C T I V E    S E C O N D A R Y   E L E C T R O N S
>> /gate/physics/setElectronCut 100. mm (the material is BGO)
>> 
>> #       I N A C T I V E    X - R A Y S
>> /gate/physics/setXRayCut 1. MeV
>> /gate/physics/setDeltaRayCut 10. MeV
>> 
>> /gate/physics/verbose 2
>> 
>> Many thanks,
>> 
>> BG
>> 
>> ----
>> 
>> Bastien Guerin
>> PhD candidate, University of Paris
>> Visiting Fellow, Harvard University
>> work: 617-525-6629
>> urgent: 617-817-2762
>> 
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>> 
>>