Meetings DDVCS

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meeting zoom https://jlab-org.zoomgov.com/j/1606362652 (password is what ddvcs would study)

2025/02/20 (Thu 10AM ET/16PM Paris)

2025/01/23 (Thu 10AM ET/16PM Paris)
- update Sebastian
- update Zhiwen
- recording

2024/12/12 (Thu 10AM ET/16PM Paris)
- projection update (Sebastian) (grape and EPIC results are close now)
- updated grape result with muon and ele comparison (Zhiwen) (grape ele mode has different feature comparing to muon mode)
- update on solid forward muon detection with 1 layer lead (Zhiwen) (lead help reduce pion rate,but not rate of muon from pion decay)
- recording

2024/11/21 (Thu 10AM ET/16PM Paris)
- discussion on Oct 30 (Zhiwen)
- grape mode (Zhiwen) (grape muon mode match HERA data)
- EpIC and grape comparison (Sebastian)
- Update about muon detector plan (Marie and Deb)
- recording

...................................

2023/04/11
- Update on H fitting ( Marie )
- Update Muon detector ( Juan-Sebastian)
- Update writing DDVCS (all)
- To do list DDVCS proposal for next week( all )
  - background rate in muon detector
  - DDVCS reconstruction efficency
  - implement tracking on farm
  - plots for proposal
  - write proposal background section (Alex/Zhiwen)
  - write physis motivation section ( Marie )
- update CLFV PVDIS simulation ( Zhiwen/Alex/Xinzhan)
- Update CLFV LOI writing
- Update tracking (Weizhi ?, Zhiwen ?)
- Muon detector with straw chamber discussion

2023/03/21
- Updates
  - Alex will install on linux desktop and ifarm with VNC
  - Zhiwen : 2 pions background, check how decay muon from pion , check if
  - Weizhi started looking into tracking : tracking with muons with real resolution, check if can separate muon from decay
  - Zhiwen talked to Lorenzo : neutron background at muon detector, Lorenzo will add to the neutron simulation, can give rate
  - tracking with background
  - CLFV : PVDIS with muon event

2023/02/28
- Updates
  - Files available at /work/halla/solid/mboer/Data/
  - Zhiwen working on two pions background
  - Sebastian met with PARTON people, checking the differences with VGG

2023/02/14
- Agenda
  - updates DDVCS generated event files
  - Muon detector simulation
  - preliminary cost table
  - thoughts about CLFV
- Zhiwen has new acceptance
- updates DDVCS generated event files
  - one DDVCS file sent to Zhiwen for now, file ok, some points need to be cut by hand
  - easiest to look at rate with acceptance file
  - Marie showed to Marmoud how to do analysis
  - want to look at Phi acceptance of detector with asymmetry
- Muon detector simulation
  - still working on GEMC
- preliminary cost table
  - https://docs.google.com/spreadsheets/d/1wTJwfQLd8HKvb1_aQDXJ0ORTNQEqSbZDG3bbLuMiTpQ/edit?usp=sharing
  - optimize number of layers - need to look at simulation
- thoughts about CLFV
  - difficult with J/Psi, since it is electron trigger, need to check rates in GEM
  - could use in PVDIS setup, Deuterium should be ok
- (Eric) progress Parton and VGG cross check - will meet with Pavel
- To do :
  - Alex , will look at DDVCS file from Marie - will put link on wiki and slack
  - Alex : muon in PVDIS setup
  - Marie : will generate more files
  - Marie : look at scintillator option Alex : Straw chamber
  - NSF : proposal due mid April ( Early career )
  - CLFV with Moller ?
- Background with Pythia ?
- Tracking : Weizhi busy - but will try to run - is J/Psi missing mass exist ?
- Proposal
  - Overleaf ( remove everything)
  - DAQ section, J/Psi rates summary
  - Budget

2023/02/07
- picoTDC 200$ for 128 channels - 1000 CHF for board
- if high rate and high resolution need waveform sampling : EIC chips NALU, and EICROC, ALTIROC
- Zhiwen : updates on simulation, single pion background

2023/01/31
- [DDVCS]
- [DDVCS tasks]
- Zhiwen shows introduction of detector setup
  - Sonny - close muons detector could help for pion background - large angle
  - Zhiwen - running single pion background
  - JP Chen - pion background in large angle muons - how good muons/pion ?
  - Alex : check PVDIS setup with muon detector for CLFV
  - Ron : 30 m2 500 K$ in hardware straw tubes, Fermilab 2 inch diameter tube, + electronics
  - Scintillators more 10 m2 for 300 K$ 800 $ per PMT, scintillator 6 cm thick
  - MRPC : 10 m2 4 M$ + electronics - 1 cm strip size -

2022/12/13
- Minimum DDVCS setup

500px

- Updates
  - Simulation
    - Eric and Zhiwen discussing with Discussion with Zhiwen, Eric and Sebastian, to work on simulation
    - Marie has files generated that could be also used for cross checks https://solid.jlab.org/wiki/index.php/DEEPGen_event_generator
    - update meson part of gen
  - need to check the iron
  - Pythia background : check with Zhiwen ( Ye Tian can run Pythia ) , should run in DDVCS simulation and look at muons ( look at what was done for other experiments like SIDIS), look at J/Psi for the tail , check with J/Psi proposal
  - Yulia got samples and file reader, Yulia is able to run and make histograms, still need to at analysis, early January : maybe go for LOI for this PAC ( could be run group if DDVCS approved )
  - preliminary simulation check by Xinzhan, seems to be able to work, Xinzhan can help on proposal, Geant4 simulation for crystals ( 22 MHz / per crystal for 2 cm x 2 cm )
  - Ron Gilman interested to contribute to proposal for muon detector

2022/10/31
- sticking to GEMC and Weizhi's tracking for this year
- SoLID muon task tracker : https://redmine.jlab.org/projects/solid-muons/issues

2016/06/07
- Patrick's slide about rates in muon detector [1]

2016/05/31
- pptx pdf SoLID DDVCS mm signal stat error, Zhiwen
- pptx pdf SoLID DDVCS ee, Zhiwen

2016/05/24
- Agenda
  - Discussion possible e+e- measurement
  - Muon detector update (Patrick) [[2]]
  - pptx pdf 2 pi background

2016/05/17
- Agenda
  - Detector support costs about 160 kEuros File:Https://hallaweb.jlab.org/wiki/images/a/ab/CostEstimateMuonSupport.png
  - Electronics costs about 300 K$
  - Simulation update
  - New Generated files, normalization
  - Update muon detector (Patrick) [[3]]
  - Weizhi's talk about GEM occupancy for J/psi [[4]]

2016/05/03
- Agenda
  - Patrick ( working on energy spectrum in muon detector )
  - Generated files, kinematic ( Zhiwen / Alex )
  - Draft SoLID presentation (Eric) [5]
  - Draft proposal ( Zhiwen ) [6]
  - pptx pdf 2 pi background

2016/04/26
- Agenda
  - Update Mechanical design [7]
  - Update DDVCS generator
  - Update counting rates (Eric) [8]
  - [9] exp draft in progress, Zhiwen
  - [10] two pion background, Zhiwen
  - Draft slides

2016/04/19
- Agenda
  - Update DDVCS generator (Marie) [11]
  - Update trigger and background(Zhiwen) pptx pdf
  - Update detector (Patrick) [12]

2016/04/12
- Agenda
  - Patrick thickness study
    - File:Pion-rates-Patric.png
  - summary discussion with Eric on detector
  - pptx pdf Simulation update, Zhiwen
  - Proposal writing planning

- Agenda
  - Discussion mechanical design muon detector
  - Update from Patrick on Muon detector simulation
  - Update from Marie on Event Generator
- Summary
  - Patrick not done yet with plots, will send in the next few days
  - Discussion about trigger rates, triggering on the third detectors after two layers of detector seems ok
  - Marie : still testing / debugging bad bins
  - Mechanical design : Christine has a preliminary design which covers the acceptance using 12 pieces of iron ( 6 out of 8 large iron slabs ) can only have two layers without getting additionnal iron

File:Image 2 solid.jpg File:Image 1 solid.jpg

2016/03/29
- Agenda
  - Discussion mechanical design muon detector
  - Discussion Large angle muon detector ( Kondo )
  - Discussion funding requests and responsibilities between institutions ( All )
  - Background update from Zhiwen ( not sure if he will be around but we can discuss what he sent )
  - Update from Patrick on Muon detector simulation
  - Update from Eric about new VGG code testing
  - Update from Marie on Event Generator
  - Organization proposal directory ( Alex )
- Summary
  - Marie : checking the grid, working for TCS, small issue with DDVCS grid, working on it
  - Eric VGG setup working now, can check kinematics

2016/03/22
- Marie Grid ran last week, seems to work, Marie cross checking.
- pptx pdf Simulation update (Zhiwen)
- Eric/Michel : implemented right Jacobian for Jacobian the lab. About 20 % because assumed photon mass. How mass muon is implemented, previous had only electron mass for pair. New version with muon coming this week

2016/03/18
- Patrick's slides [13]
- pptx pdf Simulation update (Zhiwen)

2016/03/10
- Update Temple Detector simulation
- Task lists
  - Alexandre muon detector and experimental setup
  - Eric : counting rates BH with VGG
  - Zhiwen : more detailed on simulation
  - Temple : muon and pion efficiency rejection and optimization of absorber ( 3 layers , from 30 up to 90 cm thickness )
  - muon background effect of vertex cut
- Update DDVCS files event generation
- pptx pdf Simulation update (Zhiwen)

2015/06/03
- Tasks
  - Simulation trigger rates ( Zhiwen )
  - Simulation pion contamination ( Zhiwen, French students ? )
  - Simulation effect of muon loss of acceptance bottom ?
  - Check event generator , (finer grid) ( Marie and student )
  - Detector around end cap
  - ~~Install GEMC ( Alexandre ,Dominique )~~ Done !
  - VGG study ( Alexandre , Eric , Dominique )
  - Write up for SoLID committee and PAC

2015/05/26 & 2015/05/28
- pptx pdf more about background, Zhiwen Zhao
- Tasks
  - Simulation trigger rates ( Zhiwen )
  - Simulation pion contamination ( Zhiwen, French students ? )
  - Simulation effect of muon loss of acceptance bottom ?
  - Check event generator , (finer grid) ( Marie and student )
  - Detector around end cap
  - Install GEMC ( Alexandre ,Dominique )
  - VGG study ( Alexandre , Eric , Dominique )
  - Write up for SoLID committee and PAC

2015/05/09
- pptx pdf (after fixing a bug in the code, kinematics should be correct now) Zhiwen Zhao
2015/04/21
- Kinematic Eric Voutier updated slides pdf
- Detector configurations Alexandre Camsonne pdf
2015/03/31
- pptx pdf Zhiwen Zhao
2015/03/24
- pptx pdf Zhiwen Zhao
2015/03/17
- pptx pdf Zhiwen Zhao

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