<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> </head> <body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <div>Dear Jenny,</div> <div><br> </div> <div>David's advice is very sound. The builder provides a reliable way to choose physics, and avoids the challenges of building it yourself.</div> <div>( The need to scrutinise every line to be sure you have a full set of processes. )</div> <div><br> </div> <div>With Geant4 9.6, I am told that QBBC_EMY is one of the more reasonable choices for alpha particles. If you have difficulty with the "_EMY", potentially you can use QBBC.</div> <div><br> </div> <div>Regard<br> <div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <div>John</div> <div> <div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> <div><br> </div> </div> </span></span></div> </div> </div> </span></div> </span></div> </span></div> </span></div> </span></span></div> <br> <div> <div>On Nov 4, 2014, at 8:26 AM, David Sarrut <<a href="mailto:David.Sarrut@creatis.insa-lyon.fr">David.Sarrut@creatis.insa-lyon.fr</a>></div> <div> wrote:</div> <br class="Apple-interchange-newline"> <blockquote type="cite"> <div dir="ltr">Hello, <div><br> </div> <div>Since the last version, we advocate to use the "PhysicList Builder" mechanism, instead of defining your own physics, please look at : <a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism">http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism</a></div> <div><br> </div> <div>Sincerely, </div> <div>David</div> </div> <div class="gmail_extra"><br> <div class="gmail_quote">On Tue, Oct 21, 2014 at 12:30 PM, Jenny Nilsson <span dir="ltr"> <<a href="mailto:jenny.nilsson@radfys.gu.se" target="_blank">jenny.nilsson@radfys.gu.se</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" style="font-size: 12pt; background-color: rgb(255, 255, 255); font-family: Calibri, Arial, Helvetica, sans-serif; "> <div><br class="webkit-block-placeholder"> </div> <div>Dear Gate users,</div> <div><br> </div> <div>I've been running a simulation with an alpha surface source. The simulation runs smoothly, no errors or warnings and the results seem reasonable</div> <div><br> </div> <div>Still, I have a limited experience simulating alpha particles and want to make sure that I use the correct physics list. </div> <div><br> </div> <div>I would greatly appreciate if someone with experience of simulating alpha particles could look at the physics list below and see if something is missing. </div> <div><br> </div> <div>Best regards</div> <div>Jenny Nilsson</div> <div><br> </div> <div><br> </div> <div>/gate/physics/addProcess PhotoElectric</div> <div>/gate/physics/processes/PhotoElectric/setModel StandardModel</div> <div><br> </div> <div>/gate/physics/addProcess Compton</div> <div>/gate/physics/processes/Compton/setModel StandardModel</div> <div><br> </div> <div>/gate/physics/addProcess RayleighScattering</div> <div>/gate/physics/processes/RayleighScattering/setModel PenelopeModel</div> <div><br> </div> <div>/gate/physics/addProcess ElectronIonisation</div> <div>/gate/physics/processes/ElectronIonisation/setModel StandardModel e-</div> <div>/gate/physics/processes/ElectronIonisation/setModel StandardModel e+</div> <div><br> </div> <div>/gate/physics/addProcess Bremsstrahlung</div> <div>/gate/physics/processes/Bremsstrahlung/setModel StandardModel e-</div> <div>/gate/physics/processes/Bremsstrahlung/setModel StandardModel e+</div> <div><br> </div> <div>/gate/physics/addProcess PositronAnnihilation</div> <div><br> </div> <div>/gate/physics/addProcess eMultipleScattering</div> <div>/gate/physics/processes/eMultipleScattering/setGeometricalStepLimiterType e- distanceToBoundary</div> <div>/gate/physics/processes/eMultipleScattering/setGeometricalStepLimiterType e+ distanceToBoundary</div> <div><br> <span style="font-size:12pt">/gate/physics/addProcess MultipleScattering alpha</span></div> <div>/gate/physics/addProcess IonIonisation</div> <div>/gate/physics/processes/IonIonisation/setStepFunction alpha 0.1 0.02 mm</div> <div>/gate/physics/processes/MultipleScattering/setGeometricalStepLimiterType alpha distanceToBoundary</div> <div>/gate/physics/addProcess IonInelastic</div> <div>/gate/physics/processes/IonInelastic/setModel G4BinaryLightIonReaction</div> <div>/gate/physics/processes/IonInelastic/setModel G4LEAlphaInelastic alpha</div> <div>/gate/physics/processes/IonInelastic/G4BinaryLightIonReaction/setEmin 80 MeV alpha</div> <div>/gate/physics/processes/IonInelastic/G4BinaryLightIonReaction/setEmax 20 GeV alpha</div> <div>/gate/physics/processes/IonInelastic/G4LEAlphaInelastic/setEmin 0 MeV alpha</div> <div>/gate/physics/processes/IonInelastic/G4LEAlphaInelastic/setEmax 80 MeV alpha</div> <div>/gate/physics/processes/IonInelastic/setDataSet G4TripathiLightCrossSection alpha</div> <div><br> </div> <div>/gate/physics/setEMin 0.1 keV</div> <div>/gate/physics/setEMax 10 GeV</div> <div><br> </div> <div>/gate/physics/setDEDXBinning 220</div> <div>/gate/physics/setLambdaBinning 220</div> <div><br> <br> </div> <p><br> </p> </div> <br> _______________________________________________<br> Gate-users mailing list<br> <a href="mailto:Gate-users@lists.opengatecollaboration.org">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><br> </blockquote> </div> <br> <br clear="all"> <div><br> </div> -- <br> <div class="gmail_signature"> <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 L�on B�rard<br> 28 rue La�nnec, 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> _______________________________________________<br> Gate-users mailing list<br> <a href="mailto:Gate-users@lists.opengatecollaboration.org">Gate-users@lists.opengatecollaboration.org</a><br> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</blockquote> </div> <br> </div> </body> </html>