[Gate-users] GateMaterialDatabase

[wuguocheng]

Hi Niklas,

I see, thank you very much for your attention.
If I want to simulate the photons generated by scintillation, is there any way that I can describe the optical properties of the involved materials?
Any help will be appreciated!


Sincerely,
2009-08-03 



GuoCheng Wu
Software Department

Neusoft Positron Medical Systems Co.,Ltd.
No.2 Xin Xiu Street, Hun Nan New District,
Shenyang 110179, PRC
Tel:  (86 24) 8366 1980
Fax: (86 24) 8366 1796
Mobile: 136 0403 9065
Email: wuguocheng at neusoft.com
Http://www.neusoft.com 
 



发件人： Niklas Rehfeld 
发送时间： 2009-08-03  16:29:43 
收件人： wuguocheng; gate-users 
抄送： 
主题： Re: [Gate-users] GateMaterialDatabase 
 
Dear GuoCheng,
In GATE photons of high and and of low energy are treated as two different  
particles (gammas and optical photons). Optical photons
are used to simulate the photons generated by scintillation. If you do not  
want to simulate the photons generated by scintillation, then
you can safely ignore the warning. Otherwise you must provide a file  
describing the optical properties of the involved materials.
All the best
Niklas
On Mon, 03 Aug 2009 05:20:21 +0200, wuguocheng <wuguocheng at neusoft.com>  
wrote:
> Hi, gate-users
>
>       when I run the Gate process, but i get some warning messages as  
> follows:
>
> [GateSystemListManager::CheckScannerAutoCreation:
> Creating new system based on volume inserter 'cylindricalPET'
>    GateMaterialDatabase: did not load properties table for material  
> 'BGO'.
>      This is only a problem when OPTICAL PHOTONS are transported in this  
> material.'
>    GateMaterialDatabase: did not load properties table for material  
> 'Lead'.
>      This is only a problem when OPTICAL PHOTONS are transported in this  
> material.'
>    GateMaterialDatabase: did not load properties table for material  
> 'Plastic'.
>      This is only a problem when OPTICAL PHOTONS are transported in this  
> material.'
>
> does anybody  can advise me on any of these issues, I would be greatfull.
>
> Best regards,
>
> 2009-08-03
>
> GuoCheng Wu
> Software Department
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