SoLID Study

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Revision as of 14:42, 30 June 2016 by Rakithab (Talk | contribs) (short term (before 2016/08, response to director review))

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A collection of studies often involve more than one subsystems

most of codes are at

timeline and milestone (as 2016/02)

short term (before 2016/08, response to director review)

what when who status
Acceptances for 3 experiments July Zhiwen and Kalyan
PVDIS Q2 May? Bob Michaels
SIDIS impact Aug? Tianbo,Zhihong,Kalyan
J/psi bin migration and signal/background Aug? Temple
Magnet optimization Aug? ANL?
hadron generators April Rakitha
electron generator (combine DIS and resonance regions) Aug?  ???
generating overall simulations files as often as needed Zhiwen
EC old response function wrapper March Yuxiang Done! on 2/19
EC new response (PVDIS) March Rakitha ECAL Trigger Background Summarysvn trigger_efficiency_numbers
EC new response (SIDIS) Aug? Rakitha
LGC trigger response March Michael done, can be adjusted
SPD and MRPC trigger response Aug Yuxiang
PVDIS e trigger July Michael,Yuxiang
SIDIS e trigger Aug Michael,Yuxiang
SIDIS hadron trigger Aug Michael,Yuxiang
DAQ deadtime Aug? Alex,Bob,Yuxiang?
GEM response parameterization Aug UVa group
GEM Digitization and Occupancy May Weizhi done with initial result, need UVa input to finalize
tracking Aug Weizhi
Baffles optimization May Rich done with initial version, working on optimization

near term (before 2017/02, science review?)

Radiation/activation Lorenzo

Kaon identification TOF group

simulation and software framework Ole

full simulation and file sharing

We will run full simulation with all subsystems and generate various files at a shared central location

They can used for studies like acceptance,trigger, background, GEM etc and ensure consistent results

file sharing location by Zhiwen

location /home/zwzhao/background (a link to /w/work6501/zwzhao/work_halla/solid/solid_svn/solid/study/background)
refer details in

list of study


new electron generator combining both DIS and resonance region with existing code (?)

new hadron generator (Rakitha)


GEM related

GEM digitization validation

SoLID GEM digitization is based on the SBS GEM digitization

According to Evaristo, the SBS GEM digitization is "Unfortunately not validated; we used the old COMPASS data to validate the digitization"

The way to do GEM digitization validation maybe

1. Extract information directly from hardware test
2. do standalone GEM simulations to matching hardware test condition

hardware test can be used

1. some cosmic or beam test with charge particles
2. the latest UVa xray test result (p13 of here) 

charge particle response can provide all input for digitization Solid_GEM_Digitization#GEM_response

low energy photon response can provide additional info about low energy photons convert into ionization to make a GEM hit to anchor simulation, this is important because they dominate the background

Digitization (Weizhi,Ole,Rich,Seamus)

Occupancy (Weizhi,Seamus,Alex)

Tracking (Weizhi and Ole)

neutron background (Lorenzo)

with low neutron physics on, comparing to Fluka result

acceptance (Zhiwen and Kalyan)

previous Study

Compare to geant3 result

rate and background

pi e Ratio

Figure of Merit for baffle designs