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Re: Physics List change [message #23181 is a reply to message #23177]

Tue, 23 October 2018 17:31

Jan Mayer
Messages: 20
Registered: August 2015

occasional visitor

From: *dip0.t-ipconnect.de

The code in gconfig/g4Config.C reads the environment variable PHYSICSLIST via

gSystem->Getenv("PHYSICSLIST")

and falls back to QGSP_INCLXX_HP if not set.
You can set this enviroment variable from inside a macro with

gSystem->Setenv()

(or similar), or from the outside in the bash

PHYSICSLIST=FTFP_BERT root -l mymacro.C

The later is also helpful when iterating over physics lists, see my neutron cross section example.

I have also had problems with Geant3 before, however I couldn't find a solution fast enough - I just stopped using it, its probably my system/installation.
However you don't really seem to be interested in Geant3, but in nicer colors.

There should be options to set the color of the objects, both before creation (in the geometry creating macros) and afterwards by getting the right pointer.
I haven't tried that yet, but https://root.cern.ch/doc/master/classTGeoManager should be able to help you.

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[Message index]

		Physics List change By: C. A. Douma on Tue, 23 October 2018 16:23
		Re: Physics List change By: Jan Mayer on Tue, 23 October 2018 17:31
		Re: Physics List change By: C. A. Douma on Wed, 24 October 2018 13:38
		Re: Physics List change By: Jan Mayer on Wed, 24 October 2018 14:09

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