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Analysis meting, BT DESY 2017 #1
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Description
First meeting for the analysis of SiWECAL data from testbeam at DESY in June 2017
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Analysis meting, BT DESY 2017 #1 (07 Jul 2017)
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## Attendants:
From Kyushu: Taikan, Yu, Izumi
From LAL: Adrian, Roman (second half)
From LLR: Vincent, Artur
From SKKU: Bokyeom
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## talks
1- Analysis task force talk by Adrian.
- Mailing list created with all presents in the meeting + Vladik and Kostia.
- Code repository: https://twiki.cern.ch/twiki/bin/view/CALICE/SiWDESY201706
- elog https://llrelog.in2p3.fr/calice/ (ecal / calice)
- Vincent will study how to create a common user/project to be used with the CERNbox. For the moment we all have acces to the data (Taikan can copy the data for Yu and Izumi)
- Simulation studies: not clear what code/strategy to use. although it seems clear that we should go ahead with DD4HEP --> Daniel Jeans is the person to talk about this in the near future.
- so far, codes from apsallid and Thibault
- Conferences prospects: CALICE/ CHEF/ LCWS/IEEE
- Analysis not including shower profiles/comparison to MC
2- Raw2root talk by Adrian
- Still not 100% clear how well the bcid+1 events are understood and tagged. Seems that with a new raw2root version that checks the bcid of following sca (not previous) will improve the results. To be checked.
- Redefinition of badbcid variable.
3- Retriggering analysis by Yu.
- Retriggers and double pedestal are intrinsically related. Seems that it is due to collective effect (some change in the reference bias seen by preamps ?)
- Double pedestal distributions are always far from the beam spot.
4- Pedestal Analysis by Bokyeom
- Study of pedestal stability. The average of all 15 SCAs pedestal is compared run by run, showing no variation in time or ennergy of the beam.
- Analysis done using the badbcid==0 and only chips hitted by the beam.
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## Person power / availability
Yu: Available until beginning August.
Adrian: More or less the same.
Artur: A bit busy for the moment (CMS test beam and others). Can help now with code maintance and similars.
Izumi: Focus on sk2a.
Bokyeom: Focus on COB test bench studies.
Adrian and Yu will take the lead and produce some results with CALICE meting in the scope. After this, we should regroup.
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## To do:
- Create siwecal user/login for the cernbox. Vincent?
- Add to this folder the commissioning data (cosmic runs)
- New raw2root and official "production" of ntuples in a "filtered" folder. Adrian. Next week.
- Retriggering studies (Yu)
- Repeat study, specially slide 3, for HG. If the effect is due to some change of baseline seen by the preamps, we expect some differences.
- Repeat plots from slide 3 for all slabs.
- Repeat plots from slide 3 for at least one grid point in the other corner of the slab (grid0)
- Repeat plots from slide 3 for cosmic runs taken during commissioning (Adrian will send you the data)
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