[Gate-users] Adding material LYSO to Materials.xml

[Ida Häggström]

Thank you Pedro and Devin for your replies,

I have done like suggested by you Devin, i.e. changing the yield, time
constant and rindex. If anyone else has suggestsions on other/more values,
please let us know!

Thank you,
Ida

On Wed, Jun 10, 2015 at 8:47 PM, Devin VanElburg <vanelbud at tbh.net> wrote:

> From what I see, the only scintillating material predefined in GATE is
> LSO. I also have been attempting to do scintillation simulations with LYSO.
> All I did was copy the LSO data, and change SCINTILLATIONYIELD to 32000
> photons/MeV, FASTTIMECONSTANT to 41 ns, and RINDEX to 1.81 (hardly a
> difference).
>
> I kept RESOLUTIONSCALE, YIELDRATIO, and ABSLENGTH the same as LSO. I
> suppose I share the same question as you, Ida. What have people been using
> for these other values?
>
> Cheers,
> Devin Van Elburg
> ----------------------------
> Physics w/ c/ Biomedical Physics
> Lakehead University
>
> >>> Alex Vergara Gil <alexvergaragil at gmail.com> 06/10/15 10:32 AM >>>
> AFAIK LYSO is a crystal like material, so it is already used in the
> crystalSD detector, please correct me if I am wrong. So it is better
> used that way because Geant4 can simulate all kind of crystalline
> effects and it will be more realistic approach.
>
> Regards
> Alex
>
> 2015-06-10 9:07 GMT-04:00, Ida Häggström <ida.haggstrom at umu.se>:
> > Dear gaters,
> >
> > I have just installed version 7.1 of Gate and am including the material
> > LYSO in the database. First of all, I found previous posts indicating the
> > definition in GateMaterials.db was not correct, and have thus changed it
> > to:
> >
> > LYSO: d=7.36 g/cm3; n=4 ; state=Solid
> > +el: name=Lutetium; f=0.714467891
> > +el: name=Yttrium; f=0.04033805
> > +el: name=Silicon; f=0.063714272
> > +el: name=Oxygen; f=0.181479788
> >
> > I also want to add the optical properties of the material to
> Materials.xml.
> > Does anyone have proper values for the RINDEX, ABSLENGTH, YIELDRATIO,
> > FASTCOMPONENT... etc? I think I can probably find values of the
> > SCINTILLATIONYIELD and also the FASTTIMECONSTANT, but the others I'm not
> > sure of.
> >
> > Thanks in advance! Sincerely,
> > Ida
> >
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