[Gate-users] startDAQ doesn't start (Vesna Cuplov)

[Vesna Cuplov]

Hello Marcin,

I've tried this and it did not help but when I specified an activity (=
counts/s) then everything worked.
I could simulate "counts" optical photons in 1 second run using startDAQ.

thank you for your interest,
vesna



On Tue, Mar 20, 2012 at 3:48 PM, Marcin Balcerzyk
<m.balcerzyk at pluri.ucm.es>wrote:

> Dear Vesna.
>
> I remember that setting time slice is quite strictly connected with
> radioactive decay. Maybe forcing your light source to be radioactive with
> say 3 years halflife ForcedUnstable yes would make it work?
>
> I hope that helps, kind regards
>
> Marcin Balcerzyk
>
>
>   1. startDAQ doesn't start (Vesna Cuplov)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 19 Mar 2012 12:48:03 +0100
> From: Vesna Cuplov <vesna.cuplov at gmail.com>
> To: gate-users at lists.opengatecollaboration.org
> Subject: [Gate-users] startDAQ doesn't start
> Message-ID:
>        <CAOibXMEsdbfiikT0v-CNy4vT4h7pXVryUy=JmuyKVXEmzu3dsA at mail.gmail.com
> >
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hello everyone,
>
> I am running a simple macro which simulates a scanner system (PMT plus
> pixel
> array). I work with a voxelized moby phantom. My source is a simple optical
> photon source.
>
> When I use:
> /gate/application/setTotalNumberOfPrimaries       1000
> /gate/application/start
>
> I can detect all the fluorescent optical photons that were emitted by the
> fluorophore inserted in the moby phantom.
>
> But when I switch to:
> /gate/application/setTimeSlice   1 s
> /gate/application/setTimeStart   0   ms
> /gate/application/setTimeStop    1 s
> /gate/application/startDAQ
>
> Nothing seems to occur in the simulation. I don't even see any optical
> photons being produced by the source....
>
> I tried to fix that by adding the following to the source description:
> /gate/source/Mysource/setForcedUnstableFlag false but that did not help.
>
> My source is defined as follows:
>
> /gate/source/addSource                                Mysource gps
> /gate/source/Mysource/gps/particle               opticalphoton
> /gate/source/Mysource/gps/energytype          Mono
> /gate/source/Mysource/gps/polarization           1 0 0
> /gate/source/Mysource/gps/monoenergy             3.1 eV
> /gate/source/Mysource/gps/centre                 1. 1.6 -200. cm
> /gate/source/Mysource/gps/direction 0. 0. 1.
> #/gate/source/Mysource/setForcedUnstableFlag false
>
> If you have any idea on what could be missing in my simulation while
> switching from setTotalNumberOfPrimaries and startDAQ, let me know.
>
> vesna
>
>
>