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<div style="direction: ltr;">
<div>
<div style="direction: ltr;">Dear Atiq,</div>
<div><br>
</div>
<div style="direction: ltr;">If you have the crystal set as the sensitive detector the tracklocaltime should be the total time a particle travels, it directly corresponds to the trackLength. The ‘time’ variable describes the time point of the particle with
respect to the whole simulationtime. </div>
<div>The energy depositions of one particle can be determined by the eventID. </div>
<div style="direction: ltr;">Hope this helps.</div>
<div style="direction: ltr;"><br>
</div>
<div style="direction: ltr;">Best,</div>
<div style="direction: ltr;">Mariele</div>
<div style="direction: ltr;"><br>
</div>
<div style="direction: ltr;"><br>
</div>
</div>
</div>
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<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif"><b>Van:</b> Gate-users <gate-users-bounces@lists.opengatecollaboration.org> namens gate-users-request@lists.opengatecollaboration.org<br>
<b>Verzonden:</b> donderdag, oktober 17, 2019 12:16 PM<br>
<b>Aan:</b> gate-users@lists.opengatecollaboration.org<br>
<b>Onderwerp:</b> Gate-users Digest, Vol 161, Issue 17
<div> </div>
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Today's Topics:<br>
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1. Re: Gate-users Digest, Vol 161, Issue 16 (Atiq Ur Rahman)<br>
2. Re: Description of eventID, TrackID and parentID when attach<br>
a sensitive detector (Atiq Ur Rahman)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Wed, 16 Oct 2019 22:53:32 +0800<br>
From: Atiq Ur Rahman <atiqchep@gmail.com><br>
To: gate-users@lists.opengatecollaboration.org<br>
Subject: Re: [Gate-users] Gate-users Digest, Vol 161, Issue 16<br>
Message-ID:<br>
<CAEQ5BgdwJOsTME=iSYwwG6eQSg-azgpNCrBKuhqB8OGTgsvyaA@mail.gmail.com><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
hi John,<br>
Thank you so much for your nice explanation. I got the Idea of the track<br>
ID but I am still confuse with the trackLocalTime track local time<br>
variable. What is the reference of each time stamp?<br>
I actually want to calculate the clustering time (rough time needed to<br>
deposit all the energy of the particle entered into the detector). Let say,<br>
we have a gamma of 4.4 MeV. it hit the detector having pdgEncoding=22, it<br>
produces many hits in different crystals. I calculate the cluster<br>
size(number of distinct hits in the all crystals). I also want to calculate<br>
the time required for the formation of the cluster. Simply say, time needed<br>
to deposit all the energy of the incident particles. In my opinion, gammas<br>
may have short clustering time than heavy particles. Is any way to do this<br>
calculation?<br>
Regards<br>
Atiq<br>
On Wed, Oct 16, 2019 at 6:16 PM <<br>
gate-users-request@lists.opengatecollaboration.org> wrote:<br>
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> 1. Re: Description of eventID, TrackID and parentID when attach<br>
> a sensitive detector (John Apostolakis)<br>
><br>
><br>
> ----------------------------------------------------------------------<br>
><br>
> Message: 1<br>
> Date: Wed, 16 Oct 2019 09:03:34 +0000<br>
> From: John Apostolakis <John.Apostolakis@cern.ch><br>
> To: Atiq Ur Rahman <atiqchep@gmail.com><br>
> Cc: "gate-users@lists.opengatecollaboration.org"<br>
> <gate-users@lists.opengatecollaboration.org><br>
> Subject: Re: [Gate-users] Description of eventID, TrackID and parentID<br>
> when attach a sensitive detector<br>
> Message-ID: <E7B8656C-81D4-442B-85DD-82A4127D895B@cern.ch><br>
> Content-Type: text/plain; charset="utf-8"<br>
><br>
> Dear Atiq,<br>
><br>
> Geant4 puts secondary particles on a stack, and when a particle is<br>
> finished being tracked picks up the last particle that was put there.<br>
><br>
> Once all the secondaries of the last particle have been dealt with<br>
> (assuming that they did not create secondaries themselves) then the next<br>
> particle that was created by the parent of that last particle will be<br>
> processed.<br>
><br>
> So the behaviour that your image documents seems quite natural.<br>
><br>
> Regards,<br>
> John<br>
> ===================================================<br>
> John Apostolakis, EP Department, CERN<br>
><br>
> On 15 Oct 2019, at 23:57, Atiq Ur Rahman <atiqchep@gmail.com<mailto:<br>
> atiqchep@gmail.com>> wrote:<br>
><br>
> Dear Users,<br>
> I am using a proton beam on a PE phantom and put PET scanner and attach a<br>
> sensitive detector with it. I have printed the data column wise. How to<br>
> understand parentID and trackID.<br>
> In my understanding parentID is the ID of the mother particle causing<br>
> current hit. Time is in increasing sequences some how but some time, it<br>
> is smaller then the previous hit.<br>
> <image.png><br>
> I am attaching a situation when timestamp of next hit is smaller than<br>
> previous time.<br>
> <image.png><br>
> Can you explain that with what reference timestamp is generated in Gate?<br>
> Regards<br>
> Atiq<br>
><br>
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Message: 2<br>
Date: Wed, 16 Oct 2019 23:09:26 +0800<br>
From: Atiq Ur Rahman <atiqchep@gmail.com><br>
To: John Apostolakis <John.Apostolakis@cern.ch><br>
Cc: gate-users@lists.opengatecollaboration.org<br>
Subject: Re: [Gate-users] Description of eventID, TrackID and parentID<br>
when attach a sensitive detector<br>
Message-ID:<br>
<CAEQ5BgdxTRcrYHLJSATDAcvDu3nz++v4+ztgbhVNEA=ZRuprNA@mail.gmail.com><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi John,<br>
Thank you so much for your nice explanation. I got the Idea of the track<br>
ID but I am still confuse with the trackLocalTime track local time<br>
variable. What is the reference of each time stamp?<br>
I actually want to calculate the clustering time (rough time needed to<br>
deposit all the energy of the particle entered into the detector). Let say,<br>
we have a gamma of 4.4 MeV. it hit the detector having pdgEncoding=22, it<br>
produces many hits in different crystals. I calculate the cluster<br>
size(number of distinct hits in the all crystals). I also want to calculate<br>
the time required for the formation of the cluster. Simply say, time needed<br>
to deposit all the energy of the incident particles. In my opinion, gammas<br>
may have short clustering time than heavy particles. Is any way to do this<br>
calculation?<br>
Regards<br>
Atiq<br>
<br>
On Wed, Oct 16, 2019 at 5:03 PM John Apostolakis <John.Apostolakis@cern.ch><br>
wrote:<br>
<br>
> Dear Atiq,<br>
><br>
> Geant4 puts secondary particles on a stack, and when a particle is<br>
> finished being tracked picks up the last particle that was put there.<br>
><br>
> Once all the secondaries of the last particle have been dealt with<br>
> (assuming that they did not create secondaries themselves) then the next<br>
> particle that was created by the parent of that last particle will be<br>
> processed.<br>
><br>
> So the behaviour that your image documents seems quite natural.<br>
><br>
> Regards,<br>
> John<br>
> ===================================================<br>
> John Apostolakis, EP Department, CERN<br>
><br>
> On 15 Oct 2019, at 23:57, Atiq Ur Rahman <atiqchep@gmail.com> wrote:<br>
><br>
> Dear Users,<br>
> I am using a proton beam on a PE phantom and put PET scanner and attach a<br>
> sensitive detector with it. I have printed the data column wise. How to<br>
> understand parentID and trackID.<br>
> In my understanding parentID is the ID of the mother particle causing<br>
> current hit. Time is in increasing sequences some how but some time, it<br>
> is smaller then the previous hit.<br>
> <image.png><br>
> I am attaching a situation when timestamp of next hit is smaller than<br>
> previous time.<br>
> <image.png><br>
> Can you explain that with what reference timestamp is generated in Gate?<br>
> Regards<br>
> Atiq<br>
><br>
> _______________________________________________<br>
> Gate-users mailing list<br>
> Gate-users@lists.opengatecollaboration.org<br>
> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users<br>
><br>
><br>
><br>
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