Difference between revisions of "Cosmics in TEDf"

Latest revision as of 10:02, 17 February 2021

Current Set Up for Running with Cosmics in TEDf (Feb 2021)

• 89 bars
• 2 CAEN v1190 TDCs (recording time information from all 180 channels)
• 2 v792 QDCs (recording charge information from subsets of 64 channels at a time)
• 12 NINO cards operating with AGILENT PSU and operating with internal threshold set by potentiometer on cards
• HV supplied by CAEN SY1527N main frame equipped with 1x A1531 primary PSU (have 3 spare) and 4x A1932A 48 channel HV distributer modules (have 4 spare)

CODA 3 and VME Readout Set Up Details

Details on ROC, PEB, and CODA3 setup etc to be added here:

• ROC
  • Slot - 1
  • Name - intelbbhodo
• PEB
  • Slot - 21
  • Name -
• CODA Readout
  • ROL file: bbhodo_list.c
  • To connect and edit rol file : ssh sbs-onl@intelbbhodo
    • Location - rol file on intelbbhodo in /homesbs-onl/rol
  • CAEN1190
    • Set for trigger match mode and enable trigger time subtraction.
    • Set for LE/TE
    • Set for 100ns resolution ( actually it is 97.7ns/channel)
    • Set window offset to -500ns and window width to 450ns.
  • V792
    • Set up with no sparsification
• Crate
  • Slot 1 - ROC
  • Slot 2 - v1190
    • Serial Number -
    • Used for TDC left side, channels 0-89 correspond to bars 1-90L, channel 127 used for TDC reference signal
  • Slot 3 - v1190
    • Serial Number -
    • Used for TDC right side, channels 0-89 correspond to bars 1-90R, channel 127 used for TDC reference signal
  • Slot 4 - v792
    • Serial Number -
    • Used for ADC, 32 channels which are shifted around the detector
  • Slot 5 - v792
    • Serial Number -
    • Used for ADC, 32 channels which are shifted around the detector
• Trigger
  • Signal
    • Trigger is from scintillator place above the scintillator array.
  • ROL is program to expect trigger into the front panel TRG.
  • Trigger output for the TI is set to width of 100ns in the ROL.
  • Trigger output is retimed by making a coincidence with a copy of the trigger ( width 125ns) delayed by 100ns so that it sets the timing of the coincidence.
    • This is because the timing of the trigger output relative to the trigger input varied by up to 20ns.
  • ADC Gate
    • ADC gate is about 150ns wide.
    • The ADC signal is about 25-40ns after the gate
  • TDC Gate
    • what is timing wrt to TDC signals?
    • what is reference signals timing wrt to TDC signals?

Running the DAQ and Analysis

• account is bbhodo on tedbbdaq machine (contact local users directly for password)
• Run CODA
  • How To
    • In home directory on bbhodo@tedbbdaq type: startCoda
      • In CODA RCgui click Control->Connect, click Configure, click Download, click Start
    • Data files saved to /home/bbhodo/data.sbsdaq2 directory in format bbhodo_####.evio.0 where #### is the run number.
    • To set event limit click Options->Scheduler->Program and set event limit using cursor
• Run analysis
  • Replay
    • Script Name - replay_hodo_cosmic.C
    • Location - /home/bbhodo/BBhodo/replay
    • Command Instructions
      • In replay directory type: analyzer
        • .L replay_hodo_cosmic.C+
        • replay_hodo_cosmic("name of data file",-1)
          • Insert actual name of data file
          • Insert -1 for all events in data file or insert number of events to analyse (eg. 10000).
      • Replayed file will appear in /home/bbhodo/BBhodo/replay/ReplayedFiles in the form replayed_bbhodo_####.evio.0.root
  • Analyse
    • Script Name - Analyse_Replayed_Hodo_Cosmic_Tree.C
    • Location - /home/bbhodo/BBhodo/replay/Macro
    • Command Instructions
      • In Macro directory type: analyzer
        • .x Analyse_Replayed_Hodo_Cosmic_Tree.C+(####,-1)
          • Insert for #### the run number of corresponding replayed file to be analysed (eg. 140)
          • Insert -1 for all events in replayed file or insert number of events to analyse (eg. 10000).
    • Analysed file will appear in /home/bbhodo/BBhodo/replay/Macro in the form Analysed_replayed_bbhodo_####.evio.0.root
    • To view analysed file in Macros directory type: analyzer "name of analysed file"
      • TBrowser browser
        • Use cursor to click on branches and histograms to view them