Difference between revisions of "Solid Background"
From Hall A Wiki
(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...) |
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| − | + | == energy flux on EC == | |
*** geant3 has EM process total energy cut at 1MeV | *** 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. | *** Both SIDIS and PVDIS have confirmed energy flux on EC by the genat3 simulation in the proposals. | ||
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*** More careful study like particle type, hit processing under way. | *** 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_SIDIS_background_vertex.png|thumb|600px|left|solid_BaBar_SIDIS_background_vertex of hits on forward EC (top:electron, middle:photon,bottom:others)]] |
| − | [[Image:solid_BaBar_PVDIS_nobaffle_background_vertex.png|thumb|600px|left|solid_BaBar_PVDIS_nobaffle_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(top:electron, middle:photon,bottom:others)]] |
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| − | + | == rate on GEM == | |
*** 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. | *** 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. | ||
Revision as of 23:25, 22 June 2011
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 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.
rate on GEM
- 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.
