Difference between revisions of "Solid Background"

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= some estimation =
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This page has been moved to [https://solid.jlab.org/wiki/index.php/Background https://solid.jlab.org/wiki/index.php/Background] in the new [https://solid.jlab.org/wiki SoLID Wiki].  Please do not edit this page.
  
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PVDIS
 
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50uA,
 
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LH target, 40cm, 0.071g/cm3, X=50/890.4=4.5e-2, Lumi=50e-6/1.6e-19*40*0.071*6.02e23=0.53e39/cm2/s
 
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LD target, 40cm, 0.169g/cm3, X=50/745.4=5.4e-2, Lumi=50e-6/1.6e-19*40*0.169*6.02e23=1.27e39/cm2/s
 
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Al window, 2*100um, density 2.7g/cm3, X=2*100e-4/8.897=2.25e-3, Lumi=50e-6/1.6e-19*2*100e-4*2.7*6.02e23=1e37/cm2/s
 
  
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SIDIS 3he
 
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15uA
 
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3he(10amg), 40cm, density=10*44.6(amg=mol/m3)*3.016(g/mol)=1.345e-3g/cm3, X=40/(67.42/1.345e-3)=0.8e-3, Lumi=15e-6/1.6e-19*40*1.345e-3*6.02e23=3e36/cm2/s
 
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GE180 glass window, 2*120um, density 2.76g/cm3, X=2*120e-4/(19.4/2.76)=3.4e-3, Lumi=15e-6/1.6e-19*2*120e-4*2.76*6.02e23=3.7e36/cm2/s
 
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beam path material: cell glass GE180 1.5mm(X=0.021),GEM, CC windows Al 6*0.02cm(X=0.013), MRPC mainly glass 0.8cm(X=0.065)
 
  
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SIDIS proton
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= rate =
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100nA
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NH3
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JPsi
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The result is at /work/halla/solid/evgen
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3uA
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LH target, 15cm, 0.071g/cm3, X=15/890.4=1.7e-2, Lumi=3e-6/1.6e-19*15*0.071*6.02e23=1.2e37/cm2/s
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Al window, 2*100um, density 2.7g/cm3, X=2*100e-4/8.897=2.25e-3, Lumi=3e-6/1.6e-19*2*100e-4*2.7*6.02e23=6e35/cm2/s
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= tool "background" =  
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== SIDIS e and hadron rate ==
  
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The code is in SVN at  
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generated by "collider", the code and script for analyzing result are at
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https://jlabsvn.jlab.org/svnroot/solid/solid_gemc/analysistool/background
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https://jlabsvn.jlab.org/svnroot/solid/evgen/collider
  
 
The result is here
 
The result is here
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http://hallaweb.jlab.org/12GeV/SoLID/download/sim/background
 
  
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*.root is from GEMC, *.txt is all FLUX banks output from *.root, background.C runs on *.txt to produce *_output.root which has rate and Eflux on all detectors
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== single particle rate ==
  
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    histogram "Eklog_R_hitid_pid" shows rate(kHz/mm2) at R(cm) and log10(Ek)(GeV) at different detector and for different particles
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various particle from vertex is estimated by "eicRate" in our event generator repository.
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    pid=0  photon+electron+positron
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The code and script for analyzing result are at
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        1  photon   
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https://jlabsvn.jlab.org/svnroot/solid/evgen/eicRate_20101102
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        2  electron + positron
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https://jlabsvn.jlab.org/svnroot/solid/evgen/eicRate_20101102/output
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        3  neutron
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        4  proton
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        5  pip
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        6  pim
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        7  Kp
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        8  Km
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        9  Kl
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      10  other
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  hitid=0 - 5  GEM plane 1 - 6
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        6      lightgas CC
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        7      heavygas CC
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        8 - 11  FAEC front,middle,inner,rear
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        12 -15  LAEC front,middle,inner,rear
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        16 - 17 MRPC front,within
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= PVDIS Geant4 modeled background from Target =
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== rate study ==
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[http://hallaweb.jlab.org/12GeV/SoLID/download/sim/talk/transversity_rate_comparison.pdf pdf] Comparison with 6GeV transversity data by Xin Qian
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[http://hallaweb.jlab.org/12GeV/SoLID/download/sim/talk/rate_comparison_zwzhao_20131204.pptx pptx] [http://hallaweb.jlab.org/12GeV/SoLID/download/sim/talk/rate_comparison_zwzhao_20131204.pdf pdf] event generator rate comparison, study by Zhiwen Zhao and Zhihong Ye
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[http://hallaweb.jlab.org/12GeV/SoLID/download/sim/talk/wiser_table.pdf pdf] study by Nguyen Ton and Xiaochao Zheng (outdated)
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= other staff =
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== PVDIS Geant4 modeled background from Target ==
  
 
Rates and flux from GEMC for PVDIS follow.  Validation against GEANT3 can be found here: [[Compare_to_geant3_result]].
 
Rates and flux from GEMC for PVDIS follow.  Validation against GEANT3 can be found here: [[Compare_to_geant3_result]].
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[[Image:Emflux.png]]
 
[[Image:Emflux.png]]
  
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= SIDIS Geant4 modeled background from Target =
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== SIDIS Geant4 modeled background from Target ==
  
 
[[Image:Sidisgem.png]]
 
[[Image:Sidisgem.png]]
  
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= <math>\pi</math>/e Ratio =
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== <math>\pi</math>/e Ratio ==
 
See [[Solid_pi_e_ratio | here]]
 
See [[Solid_pi_e_ratio | here]]

Latest revision as of 15:39, 7 December 2020

This page has been moved to https://solid.jlab.org/wiki/index.php/Background in the new SoLID Wiki. Please do not edit this page.


rate

The result is at /work/halla/solid/evgen

SIDIS e and hadron rate

generated by "collider", the code and script for analyzing result are at https://jlabsvn.jlab.org/svnroot/solid/evgen/collider

The result is here

single particle rate

various particle from vertex is estimated by "eicRate" in our event generator repository. The code and script for analyzing result are at https://jlabsvn.jlab.org/svnroot/solid/evgen/eicRate_20101102 https://jlabsvn.jlab.org/svnroot/solid/evgen/eicRate_20101102/output

rate study

pdf Comparison with 6GeV transversity data by Xin Qian

pptx pdf event generator rate comparison, study by Zhiwen Zhao and Zhihong Ye

pdf study by Nguyen Ton and Xiaochao Zheng (outdated)


other staff

PVDIS Geant4 modeled background from Target

Rates and flux from GEMC for PVDIS follow. Validation against GEANT3 can be found here: Compare_to_geant3_result.

Rates on GEMs for 50uA on LH2. Solid lines are unbaffled, dashed are with lead baffles:

Geant4 truegemrate.png

Flux in EM calorimeter for 50uA on LH2. Solid lines are unbaffled, dashed are with lead baffles. The true rate should be taken from the black lines.

Emflux.png

SIDIS Geant4 modeled background from Target

Sidisgem.png

<math>\pi</math>/e Ratio

See here

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