[Gate-users] GateMaterialDatabase

[Niklas Rehfeld]

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