<div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px">Hello, </span><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">what Gate version ? If >=7.0, please use the <a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism" target="_blank">physic list builder</a> and check with G4 documentation what kind of physics you need. </div>

<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Sincerely, </div><div style="font-family:arial,sans-serif;font-size:13px">David </div></div><div class="gmail_extra">

<br><br><div class="gmail_quote">On Wed, Aug 27, 2014 at 3:17 PM, Leda Lorenzon <span dir="ltr"><<a href="mailto:lorenzon.leda88@gmail.com" target="_blank">lorenzon.leda88@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div dir="ltr"><div><br></div><div><font face="Georgia" size="3">Dear all,</font></div><div><font face="Georgia" size="3">I’m trying to simulate Infinia Hawkeye SPECT system with LEHR collimator but I can't obtain, in the simulated spectra, the X-ray peak of lead that I observe experimentally.</font></div>


<div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><font size="3">Here is associated script that I used for the physics processes.</font></span></font></div>


<div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""></span></font><br></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">/gate/physics/addProcess PhotoElectric<br>


/gate/physics/processes/PhotoElectric/setModel LivermoreModel </span></font></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">/gate/physics/addProcess Compton<br>


/gate/physics/processes/Compton/setModel PenelopeModel</span></font></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">/gate/physics/addProcess RayleighScattering<br>


/gate/physics/processes/RayleighScattering/setModel PenelopeModel</span></font></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">/gate/physics/addProcess ElectronIonisation<br>


/gate/physics/processes/ElectronIonisation/setModel StandardModel e-</span></font></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""><br>


/gate/physics/addProcess Bremsstrahlung<br>/gate/physics/processes/Bremsstrahlung/setModel StandardModel e-</span></font></div><p>/gate/physics/addProcess eMultipleScattering<br>/gate/physics/processes/eMultipleScattering/setModel Urban95Model e-</p>


<p>/gate/physics/processList Enabled<br>/gate/physics/processList Initialized</p><p>/gate/physics/Electron/SetCutInRegion   SPECThead 0.001 cm<br>/gate/physics/Electron/SetCutInRegion   SecondHead 0.001 cm<br>/gate/physics/Gamma/SetCutInRegion   SPECThead 0.001 cm<br>


/gate/physics/Gamma/SetCutInRegion   SecondHead 0.001 cm</p><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""></span></font><br></div><div>


<font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""></span></font><br></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">Is there any problem with my script?</span></font></div>


<div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""></span></font><br></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">Please help me.</span></font></div>


<div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""></span></font><br></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">Really thank you.</span></font></div>

<span class="HOEnZb"><font color="#888888">
<div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif"">Leda</span></font></div><div><font face="Georgia" size="3"><span lang="EN-US" style="color:rgb(34,34,34);font-family:"Georgia","serif""></span></font><br>


</div><div><p class="MsoNormal"><span lang="EN-US" style="color:rgb(31,73,125);font-family:"\00b9d1\00c740\00ace0\00b515";font-size:10pt"></span><br></p><p class="MsoNormal"><span lang="EN-US" style="color:rgb(31,73,125);font-family:"\00b9d1\00c740\00ace0\00b515";font-size:10pt"><u></u> <u></u></span></p>


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-- <br><div dir="ltr">David Sarrut, Phd<br>Directeur de recherche CNRS<br>CREATIS, UMR CNRS 5220, Inserm U 1044<div>Centre de lutte contre le cancer Léon Bérard<br>28 rue Laënnec, 69373 Lyon cedex 08<br>Tel : 04 78 78 51 51 / 06 74 72 05 42<br>

<a href="http://www.creatis.insa-lyon.fr/~dsarrut" target="_blank">http://www.creatis.insa-lyon.fr/~dsarrut</a><br>_________________________________</div><div> "2 + 2 = 5,  for extremely large values of 2"<br>_________________________________</div>

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