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<p class="MsoNormal">Ah – thank you!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> ESLAM TAHA <emtaha@kau.edu.sa> <br>
<b>Sent:</b> Monday, October 18, 2021 4:22 PM<br>
<b>To:</b> Josh Knowland <jknowland@lucernodynamics.com><br>
<b>Cc:</b> gate-users@lists.opengatecollaboration.org<br>
<b>Subject:</b> Re: [Gate-users] Remove PositronAnnihilation<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Josh,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">You can disable it using the following command:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">/process/inactivate annihil<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">You need to initialize first to activate the physics before disabling one of the processes. As an example:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"># P H Y S I C S<br>
<br>
/gate/physics/addPhysicsList emstandard_opt3<br>
/gate/physics/addProcess RadioactiveDecay<br>
<br>
/gate/run/initialize<br>
<br>
/process/inactivate phot all<br>
/process/inactivate Rayl all<br>
/process/inactivate annihil<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"><o:p> </o:p></p>
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<p class="MsoNormal">My regards,<o:p></o:p></p>
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<p class="MsoNormal">Eslam<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 Mon, Oct 18, 2021 at 10:34 PM Josh Knowland <<a href="mailto:jknowland@lucernodynamics.com">jknowland@lucernodynamics.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">All –
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I am trying to remove positron annihilation from a simulation but can’t get it to work. I have used the following physics setup:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<b>/gate/physics/addPhysicsList emstandard</b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<b>/gate/physics/addProcess RadioactiveDecay</b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<b>/gate/physics/removeProcess PositronAnnihilation e+</b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<b>/gate/physics/removeProcess G4PositronAnnihilation e+</b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">But I am still getting annihilation hits followed by gamma Compton scatter. I would like no annihilation photons to be generated.
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I used the command
<b>“/gate/physics/processList Enabled”</b> and it does not list annihilation as being enabled. Does the physics list hide it until initialization? If so, how can I disable it?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thank you all,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Josh<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
Gate-users mailing list<br>
<a href="mailto:Gate-users@lists.opengatecollaboration.org" target="_blank">Gate-users@lists.opengatecollaboration.org</a><br>
<a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users" target="_blank">http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</a><o:p></o:p></p>
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<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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<span dir="RTL"></span><span dir="RTL"></span><span lang="AR-SA"><span dir="RTL"></span><span dir="RTL"></span>____________</span><span dir="LTR"><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" dir="RTL" style="text-align:left;direction:rtl;unicode-bidi:embed">
<span dir="LTR">Eng. Eslam Mohammad Taha</span><span lang="AR-SA"><o:p></o:p></span></p>
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<span dir="LTR">Medical Physics Engineer</span><span lang="AR-SA"><o:p></o:p></span></p>
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<span dir="LTR">Nuclear Engineering Department</span><span lang="AR-SA"><o:p></o:p></span></p>
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<span dir="LTR">King Abdulaziz University</span><span lang="AR-SA"><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" dir="RTL" style="text-align:left;direction:rtl;unicode-bidi:embed">
<span dir="LTR">Jeddah, Saudi Arabia</span><span lang="AR-SA"><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" dir="RTL" style="text-align:left;direction:rtl;unicode-bidi:embed">
<span dir="LTR">Mobile: +966556537833</span><span lang="AR-SA"><o:p></o:p></span></p>
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<span dir="LTR">Email</span><span dir="RTL"></span><span dir="RTL"></span><span lang="AR-SA"><span dir="RTL"></span><span dir="RTL"></span>: <a href="mailto:ebarzangy@stu.kau.edu.sa" target="_blank"><span lang="EN-US" dir="LTR" style="color:#1155CC">emtaha@kau.edu.sa</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="AR-SA" dir="RTL"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:gray">إخلاء مسؤليه: ان جميع المعلومات المتضمنة في هذه الرسالة تخص المستلم، وربما تتضمن معلومات سرية، واذا لم تكن انت المستلم فالرجاء الغاء الرسالة واشعار المرسل، كما يمنع نسخ او توزيع هذه
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