CLAS GEANT Simulation

DOCUMENTATION

Introduction

BIG DISCLAIMER:
I have no time whatsoever to write a real set of manual pages for GSIM. I do not claim that the information in these pages is up to date, nor that it is accurate, nor that it is even relevant. If you REALLY want to know what is going on with the code, look at the source files, that is always the ultimate authority on how the GSIM program behaves (or doesn't behave.)

GSIM/GEANT conventions:

The Physical units in GSIM and GEANT are as follows:
centimeter, second, kilogauss, GeV, GeV c-1 (momentum), GeV c-2 (mass), degree.
(Unless otherwise specified!!!)

GSIM uses the GEANT particle codes:
Full table is here: GEANT manual GPART

Gamma 1 0.0 0 stable (10¹⁵ )

Positron 2 0.00051099906 1 stable

Electron 3 0.00051099906 -1 stable

Neutrino 4 0.0 0 stable

Muon + 5 0.105658389 1 2.19703 x10^-6

Muon - 6 0.105658389 -1 2.19703 x10^-6

Pion 0 7 0.1349764 0 8.4 x10^-17

Pion + 8 0.1395700 1 2.603 x10^-8

Pion - 9 0.1395700 -1 2.603 x10^-8

Kaon 0 long 10 0.497672 0 5.17 x10^-8

Kaon + 11 0.493677 1 1.237 x10^-8

Kaon - 12 0.493677 -1 1.237 x10^-8

Neutron 13 0.93956563 0 887.0

Proton 14 0.93827231 1 stable

Kaon 0 short 16 0.497672 0 8.926 x10^-11

Omega 24 1.67245 -1 8.22 x10^-11

Gamma	1	0.0	0	stable	(10¹⁵ )
Positron	2	0.00051099906	1	stable
Electron	3	0.00051099906	-1	stable
Neutrino	4	0.0	0	stable
Muon +	5	0.105658389	1	2.19703	x10^-6
Muon -	6	0.105658389	-1	2.19703	x10^-6
Pion 0	7	0.1349764	0	8.4	x10^-17
Pion +	8	0.1395700	1	2.603	x10^-8
Pion -	9	0.1395700	-1	2.603	x10^-8
Kaon 0 long	10	0.497672	0	5.17	x10^-8
Kaon +	11	0.493677	1	1.237	x10^-8
Kaon -	12	0.493677	-1	1.237	x10^-8
Neutron	13	0.93956563	0	887.0
Proton	14	0.93827231	1	stable
Kaon 0 short	16	0.497672	0	8.926	x10^-11
Omega	24	1.67245	-1	8.22	x10^-11