GSI Forum: General Discussions » Experimental verification of the Geant4 physics list for S438

Home » R3BRoot » General Discussions » Experimental verification of the Geant4 physics list for S438 (Experimental verification of the Geant4 physics list for S438)

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

Experimental verification of the Geant4 physics list for S438 [message #20118]

Sun, 15 January 2017 12:24

C. A. Douma
Messages: 88
Registered: September 2015
Location: Groningen

continuous participant

From: *cm-3-4d.dynamic.ziggo.nl

Dear Mr. Kresan,

I made a comparison between experiment and simulation for 3 situations of the S438 experiment.
I used Ken Miki his experimental results and did the simulation with R3BRoot. The chosen
physics list .in-macro is included.

Do you have any suggestions how I can change and/or bias the physics list to bring the
simulation in better agreement with the experimental result?

Picture explanation: We are looking at the second single plane of NeuLAND. For this plane we create
a histogram with 50 bins. 1 count is added to the respective bin when a bar inside this plane fired.
(calculated by Jan Mayer his NeuLAND Digitizer). Repeating this for 1000000 beam particles (=events)
gives the respective pictures.

The simulation can also be used to trace back (by G4 MotherID) what kind of particle fired the bar.
This allows us to see the breakdown of the picture for the simulation case, but not for the
experimental case.

Hence, as a comparison, one can only look to what extend the total sums match.
Applying the VETO condition means here that an entire event is discarded when at least
one bar in the VETO fired. VETO responce is also calculated with Jan Mayer his digitizer.

Yours Sincerely,
Christiaan Douma.

Attachment: Verified.zip
(Size: 1.88MB, Downloaded 518 times)

Report message to a moderator

[Message index]

		Experimental verification of the Geant4 physics list for S438 By: C. A. Douma on Sun, 15 January 2017 12:24
		Re: Experimental verification of the Geant4 physics list for S438 By: Dmytro Kresan on Mon, 16 January 2017 09:12
		Re: Experimental verification of the Geant4 physics list for S438 By: C. A. Douma on Mon, 16 January 2017 12:52
		Re: Experimental verification of the Geant4 physics list for S438 By: Dmytro Kresan on Mon, 16 January 2017 13:09

Previous Topic:	How does the IsElastic-function in the NeutronTracker2D work?
Next Topic:	CALIFA-SiTracker-GLAD geometry conflict

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Jul 03 08:34:39 CEST 2026

Total time taken to generate the page: 0.00773 seconds