Software

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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

Getting Data files from JLAB

downloading to offsite place

running on JLAB farm

Contents of EG1 DST files

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

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