[Gate-users] Reply:Gate-users Digest, Vol 49, Issue 8

[bob5080 at 163.com]

Hello dear Gate-Users,My English is very poor,I hope you may understand the meaning."it radiated different angles,it's not linear" ,my simulate is the same of you,because the shape is sphere,and the process consist Compton Scatter.The different angles include LOR,you can find them from the output data.I think you don't care this prolem,you can deal with data of Coincidence event with a right way,it's   OK.I hope I can help you and keep in contact with you!

在2010-06-06 18:00:02，gate-users-request at lists.opengatecollaboration.org 写道：
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>   1. Re: Back-to-back gamma_ray (Simon Stute)
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>----------------------------------------------------------------------
>
>Message: 1
>Date: Sat, 5 Jun 2010 13:55:09 +0200
>From: Simon Stute <gate.stute at gmail.com>
>Subject: Re: [Gate-users] Back-to-back gamma_ray
>To: gate-users at lists.opengatecollaboration.org
>Message-ID:
>	<AANLkTimFEI3t58Fd_DdGK48JOpqvcenZaDZSLiU0pLFq at mail.gmail.com>
>Content-Type: text/plain; charset=UTF-8
>
>Hi,
>
>There was a known bug in gate_v6 but it was corrected in gate_v6.p01 (the
>version inside vGate).
>So it is strange you encounter some problem.
>Could you please tell how do  you verify that "it radiated different angles,
>it's not linear" ?
>
>Simon
>
>2010/6/5 Tsukahara Tatsuya <Tatsuya.Tsukahara at mc7.seikyou.ne.jp>
>
>Hello dear Gate-Users,
>>
>> I have installed vGate. I'm trying to simulate of PET.
>> Then, I have a problem concerning the gamma source.
>> I defined set type as back-to-back, particle gamma, energy type Mono,
>> but it radiated different angles, it's not linear.
>> This is mac file of source ?
>>
>> # S O U R C E 1
>> /gate/source/addSource twogamma
>> /gate/source/twogamma/setActivity 1000000. becquerel
>> /gate/source/twogamma/gps/particle gamma
>> /gate/source/twogamma/setType backtoback
>> /gate/source/twogamma/gps/centre 0.0 0.0 0.0 mm
>> /gate/source/twogamma/gps/energytype Mono
>> /gate/source/twogamma/gps/monoenergy 0.511 MeV
>> #/gate/source/twogamma/gps/type Point
>> /gate/source/twogamma/gps/type Volume_
>> /gate/source/twogamma/gps/shape Sphere
>> #/gate/source/twogamma/gps/shape Cylinder
>> /gate/source/twogamma/gps/radius 1. mm
>> #/gate/source/twogamma/gps/halfz 20. mm
>> /gate/source/twogamma/gps/angtype iso
>> /gate/source/twogamma/gps/mintheta 0. deg
>> /gate/source/twogamma/gps/maxtheta 180. deg
>> /gate/source/twogamma/gps/minphi 0. deg
>> /gate/source/twogamma/gps/maxphi 360. deg
>>
>> I am reading the user's guide but I don't really understand what
>> parameter I should change...
>> Please tell me some hints and solutions.
>>
>> Thanks a lot.
>>
>>
>> Tatsuya Tsukahara
>> Email_address : Tatsuya.Tsukahara at mc7.seikyou.ne.jp
>>
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>End of Gate-users Digest, Vol 49, Issue 8
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