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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Cheng,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You right, below MinRange or MinEnergy, the tracking of the particle is stopped and energy is deposited locally.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Geant4 uses “cuts” in distance: as you define geometries in mm/cm, it is easier to define consistent “cuts” in distances.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">However, there is obviously a correlation between particle range and particle kinetic energy and if preferred, you can use “cuts” in energy.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">This is also useful for cross comparisons with other MC codes which define “cuts” in energy only.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hope this helps.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Loic<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> gate-users-bounces@lists.opengatecollaboration.org [mailto:gate-users-bounces@lists.opengatecollaboration.org]
<b>On Behalf Of </b>Cheng Xu<br>
<b>Sent:</b> Freitag, 6. Juni 2014 09:12<br>
<b>To:</b> Gate Users<br>
<b>Subject:</b> [Gate-users] meaning of special cuts commands<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dear all,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I want to use special cuts to increase the speed of simulations, but not really sure the meaning of two commands, could anyone explain to me about them? Thanks in advance!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">What is the min kinetic energy? does that mean if the energy of a particle lower than this value, it would stop and be absorbed?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">And what is the min remaining range?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best regards,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Cheng<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<pre style="line-height:13.2pt;background:#F9F9F9;border:none;padding:0cm"><span style="color:black">/gate/physics/SetMinKineticEnergyInRegion world 1 keV<o:p></o:p></span></pre>
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<pre style="line-height:13.2pt;background:#F9F9F9;border:none;padding:0cm"><span style="color:black">/gate/physics/SetMinRemainingRangeInRegion world 0.02 mm<o:p></o:p></span></pre>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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