Software

Getting the analysis software

Minimal CLAS software for EG1 analysis

download files from the JLAB CVS repository using the command

type the command below in order to tell CVS to use ssh

setenv CVS_RSH ssh

if you have an account on the JLAB computers you can do

cvs -td :ext:USERNAME@cvs.jlab.org:/group/clas/clas_cvs co packages

where USERNAME is your JLab username

I will get all packages for convenience but in the end I will remove some subdirectories which the EG1 dst reader doesn't need.

I only kept the following subdirectories under the "packages" subdirectory.
bankdefs
bos
bosbank
bosio
c_bos_io
cc
c_cern
clasbos
clasutil
cms
c_sql
CVS
fdump
fpack
fputil
include
Makefile
rtm
utilities

EG1 DST reader

The EG1 dsts reader is used to uncompress the EG1 DST data files for analysis. The DST library has at least 3 version now so you must use the correct DST library with your data file.

UNIX software

apt-get install paw apt-get install paw++ apt-get install xemacs

Contents of EG1 DST files

 if(id==45) /* deuteron*/
   return(8);
 if(id==49) /* Helium 3*/
   return(9);
 if(id==47) /*Helium 4*/
   return(10);
 if(id==22) /* photon*/
   return(11);
 if(id==(-11)) /* positron*/
   return(12);

Name	BOS bank	Description
p_id	EVNT.ID	Particle ID 1= electron ...
		1= electron
		2= proton
		3= neutron
		4= [math]\pi^+[/math]
		5= [math]\pi^-[/math]
		6= [math]K^+[/math]
		7= [math]K^-[/math]
		8= deuteron
		9= Helium 3
		10= Helium 4
		11= photon
		12= positron
p_x	EVNT.P*EVNT.dir_cos[o]	Momentum in X direction
p_y	EVNT.P*EVNT.dir_cos[1]	Momentum in Y direction
p_z	EVNT.P*EVNT.dir_cos[2]	Momentum along beam pipe
v_x	EVNT.vertex[0]	position of vertex in X
v_y	EVNT.vertex[1]	in Y
v_z	EVNT.vertex[2]	in Z
q	EVNT.Charge	Particle's Charge
beta	EVNT.Beta	Beta particle
sector	DCPB.SCTR or ECPB.ScHT or LCPB.ScHT or SCPB.ScPdHT	sector
chi_sqr	DCPB.Chi2	track fit
cc_pe	CCPB.Nphe/10	number of photoelectrons in Cerenkov detector
cc_chi_sqr	CCPB.Chi2CC	?????????????
trl1_theta	TRL1.DC1	angle on tracking layer one
trl1_phi	TRL1.DC1	angle
trl1_x	TRL1.DC1_pos[0]	location on layer
trl1_y	TRL1.DC1_pos[1]	location on layer
trl1_z	TRL1.DC1_pos[2]	location on layer
sc_e	SCPB.Edep	energy deposited in the scintillator
ec_in	ECPB.Ein	energy deposited into inner electron calorimeter
ec_out	ECPB.Eout	into outer electron calorimeter
ec_tot	ECPB.Etot	total energy deposited into calorimeter
ec_pos_x	ECPB.Position[0]	the position in electron calorimeter
ec_pos_y	ECPB.Position[1]	the position in electron calorimeter
ec_pos_z	ECPB.Position[2]	the position in electron calorimeter
ec_m2hit	ECPB.M2_hit	?????????
sc_paddle	SCPB.ScPdHt	scintillator paddle number
tdc_time	SCPB.Time	flight time
track_length	SCPB.Path	track length
flag	based on EVNT.Status and TRL1.hits	If value is > 10 then 6 superlayer were used in track fit
sc_x	DCPB.SCplane[0]	the track location at the scintillator
sc_y	DCPB.SCplane[1]	the track location at the scintillator
sc_z	DCPB.SCplane[2]	the track location at the scintillator
sc_cx	DCPB.SCdir_cos[0]	direction in X
sc_cy	DCPB.SCdir_cos[1]	direction in Y
sc_cz	DCPB.SCdir_cos[2]	direction in Z	}