[G12] GSIM Queries

[Mukesh Saini]

Hi All,

I am trying to setup my Monte-Carlo analysis at FSU. I am unfamiliar with the software and its output and I have questions about the following.

1) 
I have the Target defined as g11a in the ffread file:

MAGTYPE 2
MAGSCALE 0.502 0.000
PTGIFIELD 0

STTYPE 1
STZOFF -90.0
TGPOS 0. 0. 0.

TARGET 'g11a'
TGMATE 'PROT'

But the code redefines the target material to be He3 *Look Below*. Is that a cause of concern?

2)
It also says that it is using the slow code. I am assuming there is an option or a way to use the fast code. What is the difference between the two? 

"geom_sc.c  I: Using the SLOW CODE !. "

3)
In some cases it abandon's tracking and has a huge number of e-/e+ in th event. Does it mean something is wrong or is it a part and parcel of the process?  

=======================================================================================

*** GSMATE ***: Warning, material redefinition: 
0MATERIAL                           A         Z     DENSITY  RADIAT L  ABSORP L NMIXT

3 LIQ HELIUM4              4.000     2.000     0.125 0.755E+03 0.478E+03   1        
3 LIQ HELIUM4              4.000     2.000     0.146 0.755E+03 0.613E+03   1        
INIT_MG    I: *** Starting to set up magnetic field *** 
INIT_MG    I: Magtype used is:   2 
INIT_MG    I: Ptg_ifield value is:   0 
INIT_MG    I: reading in magnetic field map from /d/home/clas/g12/parms/bgrid_t.fpk 
file[ 0]->/d/home/clas/g12/parms/bgrid_t.fpk<-
INIT_MG    I: Grid used is:     652761    652761        61        41        87 
bosClose : close local file
bosClose : Call cclose(stream=1,iobptr=0,medium=2)
-100
INIT_MG    I: *** Done reading magnetic field map *** 
calib_connect: RunIndex_table = "calib_user.RunIndexg12"
calib_connect: using server=clasdb.jlab.org (default)


=========================================================================================

GEOM_EC1_INI: EC1 geometry read normally 
GEOM_EC1_INI: Attenuation length for all strips replaced with mean value  350 
geom_sc.c  I: New SC Geometry for 6 independent sectors.
 
geom_sc.c  I: Using the SLOW CODE !.
 
set_sc_version_constants for run 10: flag=1

=========================================================================================

*** GTRACK *** More than     10000 steps, tracking abandoned! 
IEVENT=     88 IDEVT=     88 Random Seeds =  795126914   922246445                
Track     5 stack    13 NTMULT     417 POSITRON             Time of flight     18.583 ns                


*** GTRACK *** More than     10000 steps, tracking abandoned! 
IEVENT=     97 IDEVT=     97 Random Seeds = 1768665208  1495083300                
Track     2 stack     3 NTMULT      32 ELECTRON             Time of flight     90.443 ns                


*** GTRACK *** More than     10000 steps, tracking abandoned! 
IEVENT=    111 IDEVT=    111 Random Seeds =  874856696  1948523405                
Track     3 stack     7 NTMULT      85 POSITRON             Time of flight     19.476 ns                


*** GTRACK *** More than     10000 steps, tracking abandoned! 
IEVENT=    111 IDEVT=    111 Random Seeds =  874856696  1948523405                
Track     3 stack     6 NTMULT      86 ELECTRON             Time of flight     19.126 ns   
==========================================================================================

Apologies for the long copy-pasted info. 
Mukesh,
Graduate Student,
Florida State University.