[Gate-users] Optical photons 100% reflection issue

[Theodoros Christodoulou]

Hi,

I have a cylinder which I want to coat the inside with a 100% reflective material. In GEANT4, I used the Glisur model (dielectric-metal), which from what I read from the manual, is not supported in GATE.

In the UNIFIED model, I tried to define a 100% reflective surface (surface.xml) as the example attached below but it seems is not working:

<surfaces>
 <surface name="AlMgF2" type="dielectric_metal" sigmaalpha="0.0" finish="polished">
    <propertiestable>
      <propertyvector name="REFLECTIVITY" energyunit="eV">
<ve energy="10.332" value="1."/>
<ve energy="10.163" value="1."/>
<ve energy="9.999" value="1."/>
<ve energy="9.840" value="1."/>
<ve energy="9.686" value="1."/>
<ve energy="9.537" value="1."/>
<ve energy="9.393" value="1."/>
<ve energy="9.253" value="1."/>
<ve energy="9.116" value="1."/>
<ve energy="8.984" value="1."/>
<ve energy="8.856" value="1."/>
      </propertyvector>
      <propertyvector name="EFFICIENCY" energyunit="eV">
<ve energy="10.332" value="0."/>
<ve energy="10.163" value="0."/>
 <ve energy="9.999" value="0."/>
<ve energy="9.840" value="0."/>
<ve energy="9.686" value="0."/>
<ve energy="9.537" value="0."/>
<ve energy="9.393" value="0."/>
<ve energy="9.253" value="0."/>
<ve energy="9.116" value="0."/>
<ve energy="8.984" value="0."/>
<ve energy="8.856" value="0."/>
      </propertyvector>
    </propertiestable>
  </surface>

All the generated optical photons are absorbed in the walls instead of been reflected.

Best
Theo


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20210328/16b3f1cc/attachment.html>