LB RunGroupC Vertex
Vertex Reconstruction studies
Reconstruction Efficiencies
Simulation commands
Solenoid Off
~/src/CLAS/GEMC/source/gemc -USE_GUI=0 -SPREAD_V="(0.1, 10)cm" -N=100 eg12_nosol_noLUND.gcard
~/src/CLAS/coatjava-2.4/bin/clas12-reconstruction -i eg12_nosol_75k_noLUND.ev -config GEOM::new=true -config MAG::torus=-1.0 -config MAG::solenoid=0.0 -o temp.evio -s DCHB:DCTB:EC:FTOF:EB -config DATA::mc=true
Solenoid On
~/src/CLAS/GEMC/source/gemc -USE_GUI=0 -SPREAD_V="(0.1, 10)cm" -N=100 eg12_sol_noLUND.gcard
~/src/CLAS/coatjava-2.4/bin/clas12-reconstruction -i eg12_nosol_75k_noLUND.ev -config GEOM::new=true -config MAG::torus=-1.0 -config MAG::solenoid=1.0 -o temp.evio -s DCHB:DCTB:EC:FTOF:EB -config DATA::mc=true
Sweet spot
TS_RunGroupC#Sweet_spot Below is the command line I used for GEMC
gemc -USE_GUI=0 -HALL_MATERIAL="Vacuum" , -N=75000 eg12_nosol1.gcard
Here is the gcard
<gcard>
<detector name="../../../../clas12/fc/forwardCarriage" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/dc/dc" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ec/ec" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ctof/ctof" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ftof/ftof" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/htcc/htcc" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/pcal/pcal" factory="TEXT" variation="javageom"/>
<option name="SCALE_FIELD" value="clas12-torus-big, -1"/>
<option name="OUTPUT" value="evio,eg12_nosol_1.ev"/>
<option name="BEAM_P" value="e-, 6.0*GeV, 25.0*deg, 0*deg"/>
<option name="SPREAD_P" value="4.0*GeV, 0*deg, 0*deg"/>
</gcard>
Here is the reconstruction command
~/src/CLAS/coatjava-1.0/bin/clas12-reconstruction -s FMT:DCHB:DCTB:FTOF:EC:EB -config DCTB::useRaster=true -config MAG::solenoid=0 -i eg12_nosol_1.ev -o eg12_nosol_1_rec.ev
Below is the command and the gcard used for when the solenoid was on
gemc -USE_GUI=0 -HALL_MATERIAL="Vacuum" , -N=100000 eg12_sol1.gcard
<gcard>
<detector name="../../../../../clas12/fc/forwardCarriage" factory="TEXT" variation="original"/>
<detector name="../../../../../clas12/dc/dc" factory="TEXT" variation="original"/>
<detector name="../../../../../clas12/ec/ec" factory="TEXT" variation="original"/>
<detector name="../../../../../clas12/ctof/ctof" factory="TEXT" variation="original"/>
<detector name="../../../../../clas12/ftof/ftof" factory="TEXT" variation="original"/>
<detector name="../../../../../clas12/htcc/htcc" factory="TEXT" variation="original"/>
<detector name="../../../../../clas12/pcal/pcal" factory="TEXT" variation="javageom"/>
<option name="SCALE_FIELD" value="clas12-torus-big, -1"/>
<option name="HALL_FIELD" value="clas12-solenoid"/>
<option name="OUTPUT" value="evio,eg12_sol_1.ev"/>
<option name="BEAM_P" value="e-, 6.0*GeV, 25.0*deg, 0*deg"/>
<option name="SPREAD_P" value="4.0*GeV, 0*deg, 0*deg"/>
</gcard>
~/src/CLAS/coatjava-1.0/bin/clas12-reconstruction -s FMT:DCHB:DCTB:FTOF:EC:EB -config MAG::fields=nominal -config DATA::mc=true -i eg12_sol_1.ev -o eg12_sol_1_rec.evio
Below are the reconstructed events with the solenoid on and off for 1k events
Raster in Z
Since the LUND files are not currently operating correctly, I will use a different method to raster in Z. I will use the GEMC command line to reduce the radius of the target to 0 cm and randomly place vertex positions along Z (like a line target). The command line for GEMC is shown below along with the gcard when the solenoid is off:
~/src/CLAS/GEMC/source/gemc -USE_GUI=0 -SPREAD_V="(0.0, 3)cm" -N=100 eg12_nosol_noLUND.gcard
<gcard>
<detector name="../../clas12/fc/forwardCarriage" factory="TEXT" variation="original"/>
<detector name="../../clas12/dc/dc" factory="TEXT" variation="ccdb"/>
<detector name="../../clas12/ec/ec" factory="TEXT" variation="original"/>
<detector name="../../clas12/ctof/ctof" factory="TEXT" variation="original"/>
<detector name="../../clas12/ftof/ftof" factory="TEXT" variation="java"/>
<detector name="../../clas12/htcc/htcc" factory="TEXT" variation="original"/>
<detector name="../../clas12/pcal/pcal" factory="TEXT" variation="javageom"/>
<option name="SCALE_FIELD" value="clas12-torus-big, -1"/>
<option name="OUTPUT" value="evio,eg12_nosol_75k_noLUND.ev"/>
<option name="BEAM_P" value="e-, 6.0*GeV, 25.0*deg, 0*deg"/>
<option name="SPREAD_P" value="4.0*GeV, 0*deg, 0*deg"/>
</gcard>
and here is the reconstruction command line ~/src/CLAS/coatjava-2.4/bin/clas12-reconstruction -i eg12_nosol_75k_noLUND.ev -config GEOM::new=true -config MAG::torus=-1.0 -config MAG::solenoid=0.0 -o eg12_nosol_75k_noLUND_rec.ev -s DCHB:DCTB:EC:FTOF:EB -config DATA::mc=true
Below are the differences between the generated and reconstructed angles for 75k events:
Below are the command lines and gcard used for GEMC and the reconstruction software when the solenoid is on
~/src/CLAS/GEMC/source/gemc -USE_GUI=0 -SPREAD_V="(0.0, 3)cm" -N=75000 eg12_sol_noLUND.gcard
~/src/CLAS/coatjava-2.4/bin/clas12-reconstruction -i eg12_sol_75k_noLUND_3cm_Zraster.ev -config GEOM::new=true -config MAG::torus=-1.0 -config MAG::solenoid=1.0 -o eg12_sol_75k_noLUND_3cm_Zraster_rec.evio -s DCHB:DCTB:EC:FTOF:EB -config DATA::mc=true
<gcard>
<detector name="../../../clas12/fc/forwardCarriage" factory="TEXT" variation="original"/>
<detector name="../../../clas12/dc/dc" factory="TEXT" variation="ccdb"/>
<detector name="../../../clas12/ec/ec" factory="TEXT" variation="original"/>
<detector name="../../../clas12/ctof/ctof" factory="TEXT" variation="original"/>
<detector name="../../../clas12/ftof/ftof" factory="TEXT" variation="java"/>
<detector name="../../../clas12/htcc/htcc" factory="TEXT" variation="original"/>
<detector name="../../../clas12/pcal/pcal" factory="TEXT" variation="javageom"/>
<option name="SCALE_FIELD" value="clas12-torus-big, -1"/>
<option name="HALL_FIELD" value="clas12-solenoid"/>
<option name="OUTPUT" value="evio,eg12_sol_75k_noLUND_3cm_Zraster.ev"/>
<option name="BEAM_P" value="e-, 6.0*GeV, 25.0*deg, 0*deg"/>
<option name="SPREAD_P" value="4.0*GeV, 0*deg, 0*deg"/>
</gcard>
Below are the plots for the differences between the generated and the reconstructed values for theta and phi with the solenoid on for 75k events:
Raster in X
Raster in Y
Raster in X & Y Zis zero
Below is the command line used for rastering in X and Y while leaving the z-component of the vertex at 0 with the solenoid off:
~/src/CLAS/GEMC/source/gemc -USE_GUI=0 -SPREAD_V="(0.5, 0)cm" -N=75000 eg12_nosol_noLUND.gcard
and here is the reconstruction command line
~/src/CLAS/coatjava-2.4/bin/clas12-reconstruction -i eg12_nosol_75k_noLUND_xyraster.ev -config GEOM::new=true -config MAG::torus=-1.0 -config MAG::solenoid=0.0 -o eg12_nosol_75k_noLUND_xyraster_rec.evio -s DCHB:DCTB:EC:FTOF:EB -config DATA::mc=true
Below are the differences between the reconstructed and the generated angles for rastering 1cm in XY:
Below are the command lines and the gcard used for when the solenoid was on:
~/src/CLAS/GEMC/source/gemc -USE_GUI=0 -SPREAD_V="(0.5, 0)cm" -N=75000 eg12_sol_noLUND.gcard
~/src/CLAS/coatjava-2.4/bin/clas12-reconstruction -i eg12_sol_75k_noLUND_1cm_XYraster.ev -config GEOM::new=true -config MAG::torus=-1.0 -config MAG::solenoid=1.0 -o eg12_sol_75k_noLUND_1cm_XYraster_rec.evio -s DCHB:DCTB:EC:FTOF:EB -config DATA::mc=true
<gcard>
<detector name="../../../../clas12/fc/forwardCarriage" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/dc/dc" factory="TEXT" variation="ccdb"/>
<detector name="../../../../clas12/ec/ec" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ctof/ctof" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ftof/ftof" factory="TEXT" variation="java"/>
<detector name="../../../../clas12/htcc/htcc" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/pcal/pcal" factory="TEXT" variation="javageom"/>
<option name="SCALE_FIELD" value="clas12-torus-big, -1"/>
<option name="HALL_FIELD" value="clas12-solenoid"/>
<option name="OUTPUT" value="evio,eg12_sol_75k_noLUND_1cm_XYraster.ev"/>
<option name="BEAM_P" value="e-, 6.0*GeV, 25.0*deg, 0*deg"/>
<option name="SPREAD_P" value="4.0*GeV, 0*deg, 0*deg"/>
</gcard>
Here are the plots for the differences in the generated and reconstructed values for theta and phi with the solenoid on:
Raster in XYZ
For this simulation I rastered the beam in the XY plane around 1cm, and z was rastered +/- 3cm. Below are the differences in the the generated and reconstructed angles for when the solenoid was off:
and here are the plots for when the solenoid was on:
Summary
Electron Vertex reconstruction
I have created histograms of the z-vertex resolutions for both the proton and the electron using elastic events from the origin. I used the gemc command line to output a file called eg12_lb_NoSol.ev
gemc -USE_GUI=0 -INPUT_GEN_FILE="LUND, ElasticEvents_FromOrigin.LUND" -N=75000 eg12.gcard
My gcard looks like this
<detector name="../../../../clas12/fc/forwardCarriage" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/dc/dc" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ec/ec" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ctof/ctof" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/ftof/ftof" factory="TEXT" variation="original"/>
<detector name="../../../../clas12/htcc/htcc" factory="TEXT" variation="original"/>
<detector name="../../../clas12/pcal/pcal" factory="TEXT" variation="original"/>
<option name="SCALE_FIELD" value="clas12-torus-big, -1"/>
<option name="OUTPUT" value="evio,eg12_lb_NoSol.ev"/>
then I ran the reconstruction program using
~/src/CLAS/coatjava/bin/clas12-reconstruction -s FMT:DCHB:DCTB:FTOF:EC:EB -config DCTB::useRaster=true -config MAG::solenoid=0 -i eg12_lb_NoSol.ev -o eg12_lb_NoSol_rec.ev
After that I used the eg12_lb_NoSol_rec.ev to create the histograms
Here are the histograms when the solenoid is off
Then I ran the GEMC simulation with the solenoid on. My gcard was
<gcard>
<detector name="../../clas12/fc/forwardCarriage" factory="TEXT" variation="original"/>
<detector name="../../clas12/dc/dc" factory="TEXT" variation="original"/>
<detector name="../../clas12/ec/ec" factory="TEXT" variation="original"/>
<detector name="../../clas12/ctof/ctof" factory="TEXT" variation="original"/>
<detector name="../../clas12/ftof/ftof" factory="TEXT" variation="original"/>
<detector name="../../clas12/htcc/htcc" factory="TEXT" variation="original"/>
<detector name="../../clas12/pcal/pcal" factory="TEXT" variation="original"/>
<option name="SCALE_FIELD" value="clas12-torus-big, -1"/>
<option name="HALL_FIELD" value="clas12-solenoid"/>
<option name="OUTPUT" value="evio, eg12_lb_Sol.ev"/>
</gcard>
Which gives the output file eg12_lb_Sol.ev. I used the GEMC command line
gemc -USE_GUI=0 -INPUT_GEN_FILE="LUND, ElasticEvents_FromOrigin.LUND" -N=75000 eg12_Sol.gcard
Then I made the reconstructed file, eg12_lb_Sol_rec.ev using the command line
~/src/CLAS/coatjava//bin/clas12-reconstruction -s FMT:DCHB:DCTB:FTOF:EC:EB -config MAG::fields=nominal -i eg12_Sol.ev -o eg12_lb_Sol_rec.ev
The histogram is below
Now I will get more simulated events and use the java geometry for the pcal and the LUND file Vertex0.075k_10-40.dat and investigate the Z vertex resolution using different radius cuts.
References
https://clasweb.jlab.org/wiki/index.php/TF_EG12_Vertex#Z_resolution_With_micro-megas