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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cut = production cut: you will produce only particle having a range larger than the cut value, however these particle will be tracked down to 0 energy.<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">MinRemainingRange (or kinetic energy) means that you will stop tracking particles below this threshold.<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">It might make sense to define cuts (at the particle generation level) and special cuts (at the tracking level) with the same value (I personally do that), but
it depends on what you want to simulate exactly.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">LG<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""> Cheng Xu [mailto:xuchengxjtu@gmail.com]
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<b>Sent:</b> Freitag, 6. Juni 2014 09:47<br>
<b>To:</b> Grevillot Loic<br>
<b>Cc:</b> Gate Users<br>
<b>Subject:</b> Re: [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>
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<p class="MsoNormal">Thanks Loic, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Do you know the meaning of 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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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Jun 6, 2014, at 9:45 AM, Grevillot Loic wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Cheng,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<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.</span><o:p></o:p></p>
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<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.</span><o:p></o:p></p>
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<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.</span><o:p></o:p></p>
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<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.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hope this helps.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Loic</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> </span></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><a href="mailto:gate-users-bounces@lists.opengatecollaboration.org">gate-users-bounces@lists.opengatecollaboration.org</a><span class="apple-converted-space"> </span>[<a href="mailto:gate-users-bounces@lists.opengatecollaboration.org">mailto:gate-users-bounces@lists.opengatecollaboration.org</a>]<span class="apple-converted-space"> </span><b>On
Behalf Of<span class="apple-converted-space"> </span></b>Cheng Xu<br>
<b>Sent:</b><span class="apple-converted-space"> </span>Freitag, 6. Juni 2014 09:12<br>
<b>To:</b><span class="apple-converted-space"> </span>Gate Users<br>
<b>Subject:</b><span class="apple-converted-space"> </span>[Gate-users] meaning of special cuts commands</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<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"><span style="color:black">/gate/physics/SetMinKineticEnergyInRegion world 1 keV</span><o:p></o:p></pre>
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<pre style="line-height:13.2pt;background:#F9F9F9"><span style="color:black">/gate/physics/SetMinRemainingRangeInRegion world 0.02 mm</span><o:p></o:p></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"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif""><o:p> </o:p></span></p>
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