Hello,<br><br>If you define the surface between your PMT(cylinder) and the SPECThead as your detecting surface, you <br>need to do the following:<br><br>Definition of the surface going from specthead (Sensitive detector volume) towards pmt:<br>
<br>/gate/SPECThead/surfaces/name Detection<br>/gate/SPECThead/surfaces/insert pmt <br><br>(Your entire SPECThead is your sensitive detector? You did not define any crystal or pixel levels?<b>)</b><br>
<br>/gate/SPECThead/surfaces/Detection/setSurface your_detecting_surface <br><br>You can also define the surface going from your pmt towards spect_head which is not the same as <br>the previous surface.<br><br>
Let me know how it goes.<br>vesna<br><br><br><br><div class="gmail_quote">On Tue, Nov 27, 2012 at 11:05 AM, open researcher <span dir="ltr"><<a href="mailto:openresearcher90@gmail.com" target="_blank">openresearcher90@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Gate users!<div><br></div><div>I am trying to detect Optical photons (generated from scintillating crystal) in PMTs. </div>
<div>I have defined PMTs as cylindrical volume with glass as material. </div><div>As it is mentioned in Gate users guide, for detection of optical photons one should use a dielctric -metal surface,</div>
<div> I have defined the surface between PMT volume and SPECThead volume with REFLECTIVITY 0.05 and EFFICIENCY 0.95.</div><div><br></div><div>In users guide it is mentioned that '<span style="line-height:19.049999237060547px;font-size:13px;font-family:sans-serif">To load properties from the surface.xml file into the newly created surface, the name of the surface properties that should be read must be given to the surface' using command</span></div>
<div><span style="line-height:19.045454025268555px"><font face="sans-serif"> /gate/volume1/surfaces/surface1/setSurfacename surfacename</font></span></div><div>
<span style="line-height:19.045454025268555px"><font face="sans-serif">But I am getting an error </font></span><font face="sans-serif"><span style="line-height:19.045454025268555px"> 'COMMAND NOT FOUND </gate/pmt/surfaces/surface1/setSurfacename di_metal>' (di_metal is the name of the surface, pmt is volume). If I don't use this command, simulation is running without any error, but I am not able to get image. </span></font></div>
<div><font face="sans-serif"><span style="line-height:19.045454025268555px">Any help ?</span></font></div><div><font face="sans-serif"><span style="line-height:19.045454025268555px">Thanks in advance!</span></font></div>
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