[Gate-users] Is this simulation executable?

Bryan McIntosh mcintoshster at gmail.com
Wed Jul 25 20:13:07 CEST 2018

Hi Seokyoon,

I haven't worked much with optical photons in GATE, but you are definitely
going to need to use the optical photon generation/tracking. The start of
the guide is available at

Thinking about it briefly, here are a few challenges you will likely run

-Dealing with photon transmission at the scintillator/air interface; it's
hard enough when the scintillator is sitting directly on the photodetector,
and I don't know if the photon transport code has been verified over such a
large distance.

-Finding out whether your optical photons are being transported properly;
given how far away your detector is from your scintillator, the vast bulk
of the optical photons you generate will likely not hit the detector unless
it has a very large surface area.

I am wondering if there is an error in your description of the experimental
setup. Do you mean that the x-ray source is 100 cm away from the
scintillator, which is coupled to the CCD? That would better match x-ray
imaging systems that I have worked with.

I hope these thoughts help you get started on this admittedly unusual

Best regards,


On Wed, Jul 25, 2018 at 9:18 AM, <
gate-users-request at lists.opengatecollaboration.org> wrote:

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>    1. Is this simulation executable? (Seokyoon Kang)
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> Message: 1
> Date: Wed, 25 Jul 2018 23:21:58 +0900
> From: Seokyoon Kang <seun2354 at yonsei.ac.kr>
> To: "gate-users at lists.opengatecollaboration.org "
>         <gate-users at lists.opengatecollaboration.org>
> Subject: [Gate-users] Is this simulation executable?
> Message-ID:
>         <PSXP216MB039092423652D656DA10213CEB540 at PSXP216MB0390.
> Content-Type: text/plain; charset="utf-8"
> Hello Gaters,
> I have a plan of a simulation that I want to try. Simple illustration of
> the plan is attached on this email.
> brief explain of the illustration :
> a) Set a x-ray source on space, heading to a scintillator. the
> scintillator will emit light photon.
> b) CCD camera detect the light phton and make an image. It's distance
> between scintillator and CCD camera is 100 cm.
> Can I build this simulation using GATE?
> If I can, would you guys please tell me which websites/examples/actors
> will help me?
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