Difference between revisions of "Meetings DDVCS"

Latest revision as of 13:15, 24 April 2025

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

• 2025/05/01 ddvcs (Thu 11AM ET/17PM Paris)

• 2025/04/24 ddvcs (Thu 11AM ET/17PM Paris)
  • latest draft to solid coll https://solid.jlab.org/files/sim/ddvcs/SoLID_DDVCS_2025_0421.pdf, hopefully hear feedback early next week.
  • detector and systematics section will have more content added
  • Zhiwen is focusing on neutron background study and will try to add some plots
  • we should ask people who might be interested to sign the proposal.
  • considering if uCA should be mentioned as exploratory in Executive Summary and final summary?

• 2025/04/17 ddvcs (Thu 11AM ET/17PM Paris)
  • updated simulation and projection section in draft

• 2025/04/10 ddvcs (Thu 11AM ET/17PM Paris)
  • updated projection section in draft

• 2025/04/03 ddvcs (Thu 11AM ET/17PM Paris)
  • charge asymmetry update (Sebastian)
  • recording

• 2025/03/28 solid_ddvcs (Fri 10AM ET/15PM Paris)
  • Zhiwen's sim study
  • recording

• 2025/03/27 ddvcs (Thu 11AM ET/16PM Paris)
  • charge asymmetry update (Sebastian)

• 2025/03/20 ddvcs (Thu 11AM ET/16PM Paris)
  • charge asymmetry and shadow GPD (Sebastian)
  • recording

• 2025/03/14 solid_ddvcs (Fri 10AM ET/15PM Paris)
  • recording

• 2025/03/06 ddvcs (Thu 10:30AM ET/16:30PM Paris)
  • more binning and shadow GPD (Sebastian)
  • recording

• 2025/02/20 ddvcs (Thu 10AM ET/16PM Paris)
  • projection paper https://arxiv.org/pdf/2502.02346
  • recording

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

• 2024/12/12 ddvcs (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 ddvcs (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
  • pptxpdf SoLID DDVCS mm signal stat error, Zhiwen
  • pptxpdf SoLID DDVCS ee, Zhiwen

• 2016/05/24
  • Agenda
    • Discussion possible e+e- measurement
    • Muon detector update (Patrick) [[2]]
    • pptxpdf 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]
    • pptxpdf 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) pptxpdf
    • Update detector (Patrick) [12]

• 2016/04/12
  • Agenda
    • Patrick thickness study
      • File:Pion-rates-Patric.png
    • summary discussion with Eric on detector
    • pptxpdf 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.
  • pptxpdf 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]
  • pptxpdf 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
  • pptxpdf 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
  • pptxpdf 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
  • pptxpdf (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
  • pptxpdf Zhiwen Zhao
• 2015/03/24
  • pptxpdf Zhiwen Zhao
• 2015/03/17
  • pptxpdf Zhiwen Zhao