GSI Forum: Monte Carlo Engines » Geant4: problem with set seed and cuts

Home » PANDA » PandaRoot » Monte Carlo Engines » Geant4: problem with set seed and cuts

Show: Today's Messages :: Polls :: Message Navigator

Re: Geant4: problem with set seed and cuts [message #9527 is a reply to message #9516]

Wed, 07 October 2009 16:58

Mohammad Al-Turany
Messages: 518
Registered: April 2004
Location: GSI, Germany

first-grade participant

From: *gsi.de

Hi,

Can you try to use:

/random/setSeeds myseed myseed ((G4 setSeeds requires at least two long values))

where myseed is the seed number you like.

the other method is normally used to restore the status of the random generator and need an input file which should contain the about 98 numbers presenting the HepJamesRandom engine status (it is a CLHEp package).

With the cuts, did you change anything in the g4Config.C? because the cuts will be used if your configuration has the option "stepLimiter+specialCuts+specialControls" setted in the TG4RunConfiguration. I tested the trunk version and using the macro/qa/QAmacro_sim_G4.C and get the following:

as it is:

-I- PndStack: Number of primaries = 23
Total number of particles = 11514
Number of tracks in output = 1938

now set the cutb in SetCuts.C to 1.0E-5

-I- PndStack: Number of primaries = 23
Total number of particles = 22269
Number of tracks in output = 3967

so it seems to work! can you please control your g4Config.C ?

regards

Mohammad

Report message to a moderator

[Message index]

		Geant4: problem with set seed and cuts By: Jerome Boucher on Tue, 06 October 2009 13:52
		Re: Geant4: problem with set seed and cuts By: Mohammad Al-Turany on Wed, 07 October 2009 16:58
		Re: Geant4: problem with set seed and cuts By: Jerome Boucher on Thu, 08 October 2009 10:54
		Re: Geant4: problem with set seed and cuts By: Mohammad Al-Turany on Thu, 08 October 2009 11:15
		Re: Geant4: problem with set seed and cuts By: Mohammad Al-Turany on Thu, 08 October 2009 17:22
		Re: Geant4: problem with set seed and cuts By: Dmitry Khaneft on Fri, 09 October 2009 13:47
		Re: Geant4: problem with set seed and cuts By: Jerome Boucher on Mon, 19 October 2009 12:29

Previous Topic:	GEANT3: of energy loss and delta rays
Next Topic:	elastic neutron scattering in Geant3

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Dec 05 17:09:12 CET 2024

Total time taken to generate the page: 0.00855 seconds