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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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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= rate =  
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== SIDIS e and hadron rate ==
  
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individual particle rate and pi/e ratio at vertex are available here
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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/evgen/collider
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The result is here
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== single particle rate ==
  
 
various particle from vertex is estimated by "eicRate" in our event generator repository.
 
various particle from vertex is estimated by "eicRate" in our event generator repository.
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https://jlabsvn.jlab.org/svnroot/solid/evgen/eicRate_20101102/output
 
https://jlabsvn.jlab.org/svnroot/solid/evgen/eicRate_20101102/output
  
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The result is here
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== rate study ==
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http://hallaweb.jlab.org/12GeV/SoLID/download/sim/rate
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*root is eicRate output tree, *.lund can be used as input for SoLID GEMC
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note: in eicRate, eDIS and eES crosssection is from textbook formula, all DIS hadrons crossection is from Wiser fit.
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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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particles from resonance region is still missing as 2013/03
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= background =
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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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EM and neutron background is estimated from shooting beam into target with SoLID GEMC
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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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background from eDIS, eES and DIS hadron are using the rate at vertex as input into SoLID GEMC
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The code is in SVN at
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https://jlabsvn.jlab.org/svnroot/solid/solid_gemc/analysistool/background
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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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    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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    pid=0  photon+electron+positron
 
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        1  photon   
 
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        2  electron + positron
 
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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
 
  
 
= other staff =
 
= other staff =

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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