<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "> Dear Sookyoung, <div><br> </div> <div>I agree with David Sarrut that you need to use a Physics List provided by Geant4 in order to obtain the photo-nuclear interactions which you require.</div> <div><br> </div> <div>The process which you describe is a process involving the strong interactions inside the nucleus, since it emits a neutron. In Geant4 it requires the use of hadronic processes. All physics lists which I know ( QGSP_BERT, QGS_BIC, FTFP_BERT ) have photo-nuclear interactions included. </div> <div><br> </div> <div>There are two versions of gamma-nuclear interaction available in Geant4</div> <div><br> </div> <div>a) CHIPS</div> <div>In Geant4 releases until 9.5 used as default the interaction was modelled using the CHIPS model. This model was used for many years. In its original version (ca 2002) it was validated against a lot of photo-nuclear data - there is a publication from this time. The model continued to evolve, being extended to cope with other types of interactions, so the original validation is no longer reflected in its performance in Geant4 release 9.5. If you search using Google with search terms similar to "gamma nuclear site:indico.cern.ch" you should find some of the latest validation for it. </div> <div><br> </div> <div>I was able to find the following one from 2006</div> <div> <a href="https://indico.cern.ch/event/4532/session/6/contribution/18/0/material/0/0.ps">https://indico.cern.ch/event/4532/session/6/contribution/18/0/material/0/0.ps</a></div> <div>Potentially there are other presentation at Geant4 meetings (collaboration meetings and/or hadronic working group meetings) with newer validations. </div> <div><br> </div> <div>b) Bertini</div> <div>In Geant4 release 9.6 and later, the Bertini cascade is used to model it instead. If you want to use this, you should consider using Geant4 version 10.0 patch 2, which has the latest version of this model -- if it is possible to couple it to Gate 7.0 ( maybe this requires the Git version, or it may not be possible, you will need to find out from the GATE experts.) </div> <div><br> </div> <div>Geant4 9.6 included both the CHIPS and the Bertini versions of gamma-nuclear interactions, so it offers the chance to compare. One caveat is that this was the first release of gamma-nuclear with Bertini, and it required further tuning to obtain reasonable results.</div> <div><br> </div> <div>If you need further assistance in choosing a physics list, or have some results which you want to discuss, I suggest to visit the Geant4 User Forum at</div> <div> <a href="http://hypernews.slac.stanford.edu/HyperNews/geant4/top.pl">http://hypernews.slac.stanford.edu/HyperNews/geant4/top.pl</a></div> <div>and to register. ( You will need to register in order to post questions, and the registration could take a day or two to be processed. ) </div> <div><br> </div> <div>Please also look at the Physics Lists pages of Geant4, and the other documentation (Physics reference manual, Guide for application developers) for more information about choosing a physics list and the underlying physics models.</div> <div><br> </div> <div>Best regards,<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> <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>===================================================</div> <div>John Apostolakis, PH Department, CERN</div> <div>SFT (SoFTware for Experiments) Group</div> <div>Office: Building 32/ room R-003 (ground floor), Mail: J27210</div> </div> </span></span></div> </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; "> Email: <a href="mailto:john.apostolakis@cern.ch">john.apostolakis@cern.ch</a> Office Tel: +41-22-767-7239</div> </span></span></div> </div> <div>------------------------------------------------------------------------------------------</div> </div> </div> </span></div> </span></div> </span></div> </span></div> </span></span></div> <br> <div> <div>On Aug 28, 2014, at 9:41 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>what Gate version ? If >=7.0, please use the <a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism"> physic list builder</a> and check with G4 documentation what kind of physics you need. </div> <div><br> </div> <div>Sincerely, </div> <div>David </div> </div> <div class="gmail_extra"><br> <br> <div class="gmail_quote">On Wed, Aug 27, 2014 at 1:13 PM, 정숙영 <span dir="ltr"><<a href="mailto:syjung419@skku.edu" target="_blank">syjung419@skku.edu</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div lang="KO" link="blue" vlink="purple"> <div> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">Dear GATE users,<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">As I tried to get results from any Actors that can store the information of particle production, I couldn’t get any of results about neutron.<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">I want to simulate the photon and neutron generation when the only one kind of high Z material(ex, Pb, Pt, W) bombarded with 20 MeV electron beam. <u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">So far, I found many papers that already calculated neutron flux using other Monte Calro code such as MCNPX, FLUKA but I failed with GATE.<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">In my opinion, it doesn’t include the physics of photonuclear reaction to separate neutron from the nucleus directly by high energy photon.<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">I Could you explain what is wrong in my physics setting as below here..?<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">(I didn’t use hadronic process because that physics is regarding to the incident hadron.)<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">Thank you in advance.<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">Best regards,<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">Sookyoung<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">====================================================================================<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">#=============<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""># For Leptons<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">#=============<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/addProcess PhotoElectric<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/PhotoElectric/setModel StandardModel<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/addProcess Compton<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/Compton/setModel StandardModel<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/addProcess GammaConversion<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/GammaConversion/setModel StandardModel<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/addProcess ElectronIonisation<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/ElectronIonisation/setModel StandardModel e-<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/ElectronIonisation/setModel StandardModel e+<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/ElectronIonisation/setStepFunction e+ 0.2 0.1 mm<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/ElectronIonisation/setStepFunction e- 0.2 0.1 mm<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/ElectronIonisation/setLinearLossLimit electron 0.01<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/addProcess Bremsstrahlung<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/Bremsstrahlung/setModel StandardModel e-<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/Bremsstrahlung/setModel StandardModel e+<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/addProcess PositronAnnihilation<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/addProcess eMultipleScattering<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/eMultipleScattering/setGeometricalStepLimiterType e- distanceToBoundary<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/processes/eMultipleScattering/setGeometricalStepLimiterType e+ distanceToBoundary<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">#=========<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""># Options<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">#=========<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/setEMin 0.1 keV<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/setEMax 10 GeV<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/setDEDXBinning 350<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif"">/gate/physics/setLambdaBinning 350<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p> </div> <img src="http://mail.skku.edu/historySent.ds?act=confirm&sender=c3lqdW5nNDE5QHNra3UuZWR1&receiver=PGdhdGUtdXNlcnNAbGlzdHMub3BlbmdhdGVjb2xsYWJvcmF0aW9uLm9yZz4%3d&subject=cGh5c2ljcyBwcm9jZXNzIGZvciBwaG90b251Y2xlYXIgcmVhY3Rpb24%3d&msgid=NjA1MjIwMTY0NzA0MzUxMjQ0Ng%3d%3d" width="0" height="0"> </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 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 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> _______________________________________________<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>