[Gate-users] Alpha particle physics

[John Apostolakis]

Dear Jenny,

David's advice is very sound.  The builder provides a reliable way to choose physics, and avoids the challenges of building it yourself.
( The need to scrutinise every line to be sure you have a full set of processes. )

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.

Regard
John


On Nov 4, 2014, at 8:26 AM, David Sarrut <David.Sarrut at creatis.insa-lyon.fr<mailto:David.Sarrut at creatis.insa-lyon.fr>>
 wrote:

Hello,

Since the last version, we advocate to use the "PhysicList Builder" mechanism, instead of defining your own physics, please look at  : http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism

Sincerely,
David

On Tue, Oct 21, 2014 at 12:30 PM, Jenny Nilsson <jenny.nilsson at radfys.gu.se<mailto:jenny.nilsson at radfys.gu.se>> wrote:

Dear Gate users,

I've been running a simulation with an alpha surface source. The simulation runs smoothly, no errors or warnings and the results seem reasonable

Still, I have a limited experience simulating alpha particles and want to make sure that I use the correct physics list.

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.

Best regards
Jenny Nilsson


/gate/physics/addProcess PhotoElectric
/gate/physics/processes/PhotoElectric/setModel StandardModel

/gate/physics/addProcess Compton
/gate/physics/processes/Compton/setModel StandardModel

/gate/physics/addProcess RayleighScattering
/gate/physics/processes/RayleighScattering/setModel PenelopeModel

/gate/physics/addProcess ElectronIonisation
/gate/physics/processes/ElectronIonisation/setModel StandardModel e-
/gate/physics/processes/ElectronIonisation/setModel StandardModel e+

/gate/physics/addProcess Bremsstrahlung
/gate/physics/processes/Bremsstrahlung/setModel StandardModel e-
/gate/physics/processes/Bremsstrahlung/setModel StandardModel e+

/gate/physics/addProcess PositronAnnihilation

/gate/physics/addProcess eMultipleScattering
/gate/physics/processes/eMultipleScattering/setGeometricalStepLimiterType e- distanceToBoundary
/gate/physics/processes/eMultipleScattering/setGeometricalStepLimiterType e+ distanceToBoundary

/gate/physics/addProcess MultipleScattering alpha
/gate/physics/addProcess IonIonisation
/gate/physics/processes/IonIonisation/setStepFunction alpha      0.1 0.02 mm
/gate/physics/processes/MultipleScattering/setGeometricalStepLimiterType alpha distanceToBoundary
/gate/physics/addProcess IonInelastic
/gate/physics/processes/IonInelastic/setModel G4BinaryLightIonReaction
/gate/physics/processes/IonInelastic/setModel G4LEAlphaInelastic alpha
/gate/physics/processes/IonInelastic/G4BinaryLightIonReaction/setEmin 80 MeV alpha
/gate/physics/processes/IonInelastic/G4BinaryLightIonReaction/setEmax 20 GeV alpha
/gate/physics/processes/IonInelastic/G4LEAlphaInelastic/setEmin 0 MeV alpha
/gate/physics/processes/IonInelastic/G4LEAlphaInelastic/setEmax 80 MeV alpha
/gate/physics/processes/IonInelastic/setDataSet G4TripathiLightCrossSection alpha

/gate/physics/setEMin 0.1 keV
/gate/physics/setEMax 10 GeV

/gate/physics/setDEDXBinning 220
/gate/physics/setLambdaBinning 220




_______________________________________________
Gate-users mailing list
Gate-users at lists.opengatecollaboration.org<mailto:Gate-users at lists.opengatecollaboration.org>
http://lists.opengatecollaboration.org/mailman/listinfo/gate-users



--
David Sarrut, Phd
Directeur de recherche CNRS
CREATIS, UMR CNRS 5220, Inserm U 1044
Centre de lutte contre le cancer Léon Bérard
28 rue Laënnec, 69373 Lyon cedex 08
Tel : 04 78 78 51 51 / 06 74 72 05 42
http://www.creatis.insa-lyon.fr/~dsarrut
_________________________________
 "2 + 2 = 5,  for extremely large values of 2"
_________________________________
_______________________________________________
Gate-users mailing list
Gate-users at lists.opengatecollaboration.org<mailto:Gate-users at lists.opengatecollaboration.org>
http://lists.opengatecollaboration.org/mailman/listinfo/gate-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opengatecollaboration.org/mailman/private/gate-users/attachments/20141104/5945923f/attachment-0001.html>