Difference between revisions of "Solid Background"

From Hall A Wiki
Jump to: navigation, search
(New page: ** energy flux on EC *** geant3 has EM process total energy cut at 1MeV *** Both SIDIS and PVDIS have confirmed energy flux on EC by the genat3 simulation in the proposals. *** geant4 geom...)
 
(Link to new wiki)
 
(102 intermediate revisions by 3 users not shown)
Line 1: Line 1:
** energy flux on EC
+
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.
*** geant3 has EM process total energy cut at 1MeV
+
*** Both SIDIS and PVDIS have confirmed energy flux on EC by the genat3 simulation in the proposals.
+
*** geant4 geometry and materiel checked, no simple mistake found.  
+
*** with energy cut on 1MeV, SIDIS geant4 result is close SIDIS geant3, but PVDIS geant4 is still one order larger than PVDIS geant3.
+
*** More careful study like particle type, hit processing under way.
+
  
[[Image:solid_BaBar_SIDIS_background_vertex.png|thumb|600px|left|solid_BaBar_SIDIS_background_vertex of hits on forward EC]]
 
[[Image:solid_BaBar_PVDIS_nobaffle_background_vertex.png|thumb|600px|left|solid_BaBar_PVDIS_nobaffle_background_vertex of hits on forward EC]]
 
  
<br clear="all">
 
  
** rate on GEM
+
= rate =
*** rate on GEM need more study, particular from photon-induced rate, SBS has more mature simulation tested with data, their photon-induced rate is about twice of electron rate, need to learn from them.
+
 
 +
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 ==
 +
 
 +
[http://hallaweb.jlab.org/12GeV/SoLID/download/sim/talk/transversity_rate_comparison.pdf pdf] Comparison with 6GeV transversity data by Xin Qian
 +
 
 +
[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
 +
 
 +
[http://hallaweb.jlab.org/12GeV/SoLID/download/sim/talk/wiser_table.pdf 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:
 +
 
 +
[[Image: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.
 +
 
 +
[[Image:Emflux.png]]
 +
 
 +
== SIDIS Geant4 modeled background from Target ==
 +
 
 +
[[Image:Sidisgem.png]]
 +
 
 +
== <math>\pi</math>/e Ratio ==
 +
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