Repository: https://svnweb.cern.ch/cern/wsvn/bl4sextras/technicalreport2014/

T9 Beam - CenkYildiz

  • momenta, targets, particle contents and intensities
  • operation
  • beam profiles measured using DWCs

  • where are the beam intensities and particle composition in fig. 2 measured? target or experiment?

Installation of experiment - CenkYildiz

  • detectors and geometry
  • where is the first Cerenkov? Lau says 45m? What are their dimensions? length and cross section?
  • cabling (details in appendix?)
  • gas system for DWC - operation
  • HV & LV supplies - operation

Detectors

  • Cerenkov counters - CenkYildiz
    • thresholds - particle identification
      • pressure - operation
      • efficiency
      • analysis of Cerenkov test runs(here?)

  • Scintillators - JorgenPetersen
    • setting of HV, thresholds, noise
      • table of dimensions, HV.
      • from scalers, noise and counts during bursts for SC0, SC1, SC2 - how?
      • compare SC0, SC2 (and SC1) counts showing pions lost in LG: high proportion of SC2=0 !!
      • TDC spectra
    • efficiency from TDC data
      • SC2: select a sample of good tracks && SC1 hit (muons). Compare counts in SC1 to SC2 also plot TDC spectrum
      • SC1: use LG to select muons. For those, compare SC1 and SC2.
      • Halo counters: BG & counts. Discuss usefulness ....

  • Delay Wire Chambers - SaimeSarikaya
    • gas mixture
    • HV & LV settings
    • calibration of individual chambers
      • Gas system in the lab
      • Calibration with fake signals (fake signal shape)
      • Cosmic run data
      • Radioactive data and collimation trials
    • calibration in T9, resolution
      • method for computing resolution?
      • Calibration with fake signals
      • Calibration of positions with the 10GeV run
      • can pion decays be identified using the DWCs?

Lead Glass Calorimeter - CenkYildiz

  • Description
  • history? from OPAL ...
  • muon calibration and voltage settings
  • calibration in T9
  • geant simulations
  • can we measure the pion LG spectrum?
  • overlap between muon and pion spectra
  • possible to fit LG spectrum with muon, pion (electron) Landau distributions?

Trigger & DAQ & HW & SW

  • Triggers - NIM electronics - CenkYildiz/ JorgenPetersen
    • logic diagrams of triggers
    • timing diagrams
    • NIM modules
    • performance: show LG plots for various trigger types (with some simple cuts ?).

  • DAQ HW and SW - JorgenPetersen
    • variant of ATLAS DAQ. RCD in VME. User interface.
    • SW in SBC: ATLAS RCD Single Event mode - general description - see Lucid note.
    • HW modules. V1290, v792, v560, Corbo.
    • the rcd SW packages
    • performance, VMEbus readout, deadtime.
    • OKS DB
    • Online SW including monitoring - general description and specific BL4S. OH.
    • file organisation of the DAQ SW: the "ATLAS/CMT" part, VME and monitoring
    • event displays, how they use the analysis library
    • Monitoring programs

Analysis: - CenkYildiz

  • configuration and calibration files
  • the chain from raw data to root files, file organisation

should the actual experiments, pion decay and DCC - go here? probably not ..

lots of references!

-- SaimeSarikaya - 23 Sep 2014 -- CenkYildiz - 07 Oct 2014

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Topic revision: r14 - 2015-03-14 - TimBrooks
 
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