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/fpack
where USERNAME is your JLab username
The above will download packages from JLAB's CVS repository
I only needed the following subdirectories under the "packages" subdirectory to compile the EG1 reader code.
cvs -td :ext:USERNAME@cvs.jlab.org:/group/clas/clas_cvs co packages/fpack cvs -td :ext:USERNAME@cvs.jlab.org:/group/clas/clas_cvs co packages/cms cvs -td :ext:USERNAME@cvs.jlab.org:/group/clas/clas_cvs co packages/Makefile
unless the environmental variable OS_NAME is set the Makefile will default to Linux. If you get the error
cc1: error: unrecognized command line option "-fwritable-strings"
then you need to remove this depreceated switch from the file
flags.Linux.mk
near line 45 in the above file change
CFLAGS += $(CLEVEL) -fwritable-strings
to
CFLAGS += $(CLEVEL)
Tell the makefile where to look for the Makefile scripts
setenv CLAS_CMS /home/tforest/src/CLAS/packages/cms
Tell the dst make file where to put the libraries it is going to built
setenv TOP_DIR /home/tforest/src/CLAS/lib
the files under bosbank depend on ROOT so you need to install ROOT.
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= | ||
| 5= | ||
| 6= | ||
| 7= | ||
| 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 goodness of fit |
| cc_pe | CCPB.Nphe/10 | number of photoelectrons in Cerenkov detector |
| cc_chi_sqr | CCPB.Chi2CC | geometrical matching angle between CC hit and nearest SC hit(in rad) |
| trl1_theta | TRL1.DC1 | angle on tracking layer one |
| trl1_phi | TRL1.DC1 | angle |
| trl1_x | TRL1.DC1_pos[0] | position at first DC layer in X |
| trl1_y | TRL1.DC1_pos[1] | position at first DC layer in Y |
| trl1_z | TRL1.DC1_pos[2] | position at first DC layer in Z |
| sc_e | SCPB.Edep | energy deposited in the scintillator |
| ec_in | ECPB.Ein | energy deposited into inner part of electron calorimeter |
| ec_out | ECPB.Eout | into outer part of electron calorimeter |
| ec_tot | ECPB.Etot | total energy deposited into calorimeter |
| ec_pos_x | ECPB.Position[0] | the position in electron calorimeter in X |
| ec_pos_y | ECPB.Position[1] | the position in electron calorimeter in Y |
| ec_pos_z | ECPB.Position[2] | the position in electron calorimeter in Z |
| ec_m2hit | ECPB.M2_hit | second moment hit pattern in the calorimeter |
| sc_paddle | SCPB.ScPdHt | SC 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] | intersection with SC plane in X |
| sc_y | DCPB.SCplane[1] | intersection with SC plane in Y |
| sc_z | DCPB.SCplane[2] | intersection with SC plane in Z |
| sc_cx | DCPB.SCdir_cos[0] | direction cosine in X at SC plane |
| sc_cy | DCPB.SCdir_cos[1] | direction cosine in Y at SC plane |
| sc_cz | DCPB.SCdir_cos[2] | direction in Z |
FAQ
fwriteable-strings error
cclose.c -o /home/didbtama/src/CLAS/obj/Linux/fpack/cclose.o cc1: error: unrecognized command line option "-fwritable-strings"
To get rid of this error we copied flags.LinuxRH.mk to flags.Ubuntu.mk and changed line
CFLAGS += $(CLEVEL) -mcpu=pentium -fwritable-strings
to be
CFLAGS += $(CLEVEL) -mcpu=pentium
we also needed to copy the file
link.LinuxRH.mk to link.Ubuntu.mk