<div dir="ltr">Hello Daniela, <div><br></div><div>the DoseActor is attached to the PMMA cylinder, so it will only store deposited energy of events that occur *inside* the cylinder, whatever it is larger or smaller than the cylinder. </div><div><br></div><div>You can change the size of the DoseActor with something like:</div><div>/gate/actor/MyActor/setSize 5 5 5 cm<br></div><div>If the size is larger than the cylinder, areas in the (parallelepiped) DoseActor that are outside the cylinder will store zero.</div><div>If the size is smaller than the cylinder (I think it is the case by default), the DoseActor will not store all deposited energy in the cylinder. </div><div><br></div><div>HTH,</div><div>best, </div><div>David</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Dec 9, 2020 at 10:07 PM Botnariuc, Daniela <<a href="mailto:daniela.botnariuc.19@ucl.ac.uk">daniela.botnariuc.19@ucl.ac.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang="EN-GB">
<div class="gmail-m_7323295009117516154WordSection1">
<p class="MsoNormal">Dear Gate users, <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I am simulating a proton pencil beam and I am trying to score the depth-dose curve in a cylindrical geometry. When I attach the dose actor to the cylindrical geometry, it appears that the dose is being calculated in a box as opposed to
a cylinder. I ran the same simulation but scoring dose in a cuboid geometry whose X and Y lengths were the same as the diameter (for the same depth resolution) of the cylindrical volume and I get the exact same curve. How would I define the dose actor in order
to score dose in the cylinder?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">#GEOMETRY<u></u><u></u></p>
<p class="MsoNormal">/gate/world/daughters/name PMMA<u></u><u></u></p>
<p class="MsoNormal">/gate/world/daughters/insert cylinder<u></u><u></u></p>
<p class="MsoNormal">/gate/PMMA/geometry/setRmax 4.08 cm<u></u><u></u></p>
<p class="MsoNormal">/gate/PMMA/geometry/setRmin 0. mm<u></u><u></u></p>
<p class="MsoNormal">/gate/PMMA/geometry/setHeight 20 cm<u></u><u></u></p>
<p class="MsoNormal">/gate/PMMA/placement/setTranslation 0 0 0.10 m<u></u><u></u></p>
<p class="MsoNormal">/gate/PMMA/setMaterial Water<u></u><u></u></p>
<p class="MsoNormal">/gate/PMMA/vis/setColor cyan<u></u><u></u></p>
<p class="MsoNormal">/gate/PMMA/describe<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">#DOSE ACTOR<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/addActor DoseActor depthdose<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/depthdose/attachTo PMMA<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/depthdose/stepHitType random<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/depthdose/setPosition 0 0 0 mm<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/depthdose/setResolution 1 1 1000 mm<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/depthdose/saveEveryNSeconds 60<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/depthdose/enableDose true<u></u><u></u></p>
<p class="MsoNormal">/gate/actor/depthdose/enableUncertaintyDose true<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thank you in advance for your time. <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Best wishes, <u></u><u></u></p>
<p class="MsoNormal">Daniela <u></u><u></u></p>
</div>
</div>
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<a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users" rel="noreferrer" target="_blank">http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</a></blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">David Sarrut, Phd<br>Directeur de recherche CNRS<br>CREATIS, UMR CNRS 5220, Inserm U1206<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></div></div></div></div></div></div>