Difference between revisions of "Spring 2019 DIRC Commissioning"

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(Commissioning Tasks and Milestones)
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*
 
*
  
== Commissioning Timeline ==
+
== Commissioning Timeline, Tasks and Milestones ==
* '''July 16-30:''' Integration of DIRC crate with DAQ and initial test of readout with standalone MAPMT module (Ben, Sergey, Sasha)
+
* <strike>'''July 16-30:''' Integration of DIRC crate with DAQ and initial test of readout with standalone MAPMT module (Ben, Sergey, Sasha)<\strike>
 
* '''August-October'''  
 
* '''August-October'''  
** Implementation of DAQ decoder for SSP data format in sim-recon to create low level hit objects (David)
+
** <strike>Implementation of DAQ decoder for SSP data format in sim-recon to create low level hit objects (David)<\strike>
** Implementation of Translation Table in CCDB to orient (FPGA, channel ID) mapping from readout into physical pixel coordinates (X, Y) position along readout window (David, Justin, Bill)
+
** Implementation of Translation Table in CCDB to orient (FPGA, channel ID) mapping from readout into physical pixel coordinates (X, Y) position along readout window (Nov 1) --- David, Justin, Bill
** Online and offline monitoring plugins to monitor occupancies and timing distributions (TBD)
+
** Online and offline monitoring plugins to monitor occupancies and timing distributions
*** LED occupancy and timing calibration (Yunjie)
+
*** LED occupancy and timing calibration (Nov 1) --- Yunjie
*** Physics trigger occupancies and timing - possibly use TOF/FCAL as filter for tracks in different regions (TBD)
+
*** Physics trigger occupancies and timing - possibly use TOF/FCAL as filter for tracks in different regions (Nov 1) --- TBD
** Include DIRC hit patterns in event display?
+
*** Include DIRC hit patterns in event display --- TBD
 
* '''October 29 - November 18 (3-week install period):'''
 
* '''October 29 - November 18 (3-week install period):'''
** Verify cabling and translation table with LED data (unique patterns of HV on/off)
+
** Verify cabling and translation table with LED data (1 week after install) --- TBD
** Initial time offset calibrations with LED data
+
*** Design unique patterns of HV and channel masks
** HV and threshold scans with LED data
+
*** Collect ~100k events in each configuration to verify mapping
 +
** HV and threshold scans with LED data (2 weeks after install) --- TBD
 +
*** Duplicate scans of HV and thresholds as used in laser test setup (see below)
 +
*** Determine initial HV and threshold settings for LED and beam data
 +
** Initial time offset calibrations with LED data (3 weeks after install) --- Yunjie
 
* '''November 19 - December 19 (commissioning with beam):'''
 
* '''November 19 - December 19 (commissioning with beam):'''
** TBD
+
** Complete integration with DAQ under low-intensity beam conditions: (1 week)
 +
*** Evaluate scaler rates and distributions relative to MC predictions
 +
*** Mask any noisy channels for production data
 +
*** Determine what global parameters can be optimized (beam current, bar box position, etc.) can be optimized
 +
** Production data taking with all sub-detectors in nominal condition (2 weeks, production overnight)
 +
*** FCAL-BCAL production physics trigger with interleaved DIRC LED and random triggers
 +
*** Collect sufficient statistics for optical alignment with identified &rho; and &phi;, as well as more
 +
** Intensity scans ** (1 week, production overnight)
 +
* Evaluate rate dependence and backgrounds for both high and low luminosity
 +
* Scans of fixed amorphous radiator and varied current from 50 - 300 nA
  
 
== Datasets to acquire with integrated DAQ ==
 
== Datasets to acquire with integrated DAQ ==
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* Similar set of HV, MAROC gain, and threshold settings as laser setup for comparison with final implementation
 
* Similar set of HV, MAROC gain, and threshold settings as laser setup for comparison with final implementation
 
* Validate MAPMT characterization with both LED calibration and beam data
 
* Validate MAPMT characterization with both LED calibration and beam data
 
=== Intensity scans ===
 
* Evaluate rate dependence and backgrounds for both high and low luminosity
 
* Scans of fixed amorphous radiator and varied current from 50 - 300 nA
 

Revision as of 12:34, 24 September 2018


Commissioning Goals

  • Integrate DIRC readout with general Hall D DAQ and online/offline monitoring
  • Confirm cabling through HV/mask checks with LED system
  • Calibrate per-pixel timing offset of MAPMTs using LED system
  • Determine geometric alignment parameters (position and angle offsets) for optical components
  • Implement reconstruction algorithm and compare data/MC: # detected photons, Cherenkov angle resolution

Commissioning Observables

  • "Ring" images for tracks with fixed kinematics (binned in position space over bars) overlaid on MC distributions
  • Per-pixel timing and Cherenkov angle differences (measured - LUT expected) to confirm geometry
  • Number of detected photons/track
  • Single photon resolution (SPR) per pixel

Commissioning Tasks and Milestones

  • Calibration document with expected tables for CCDB (Oct 22) --- Justin
  • Develop scripts for LED timing offset calibration (Nov 1) --- Yunjie
  • Develop EVIO parser and Translation Table (Nov 1) --- Bill/Justin

Commissioning Timeline, Tasks and Milestones

  • July 16-30: Integration of DIRC crate with DAQ and initial test of readout with standalone MAPMT module (Ben, Sergey, Sasha)<\strike>
  • August-October
    • <strike>Implementation of DAQ decoder for SSP data format in sim-recon to create low level hit objects (David)<\strike>
    • Implementation of Translation Table in CCDB to orient (FPGA, channel ID) mapping from readout into physical pixel coordinates (X, Y) position along readout window (Nov 1) --- David, Justin, Bill
    • Online and offline monitoring plugins to monitor occupancies and timing distributions
      • LED occupancy and timing calibration (Nov 1) --- Yunjie
      • Physics trigger occupancies and timing - possibly use TOF/FCAL as filter for tracks in different regions (Nov 1) --- TBD
      • Include DIRC hit patterns in event display --- TBD
  • October 29 - November 18 (3-week install period):
    • Verify cabling and translation table with LED data (1 week after install) --- TBD
      • Design unique patterns of HV and channel masks
      • Collect ~100k events in each configuration to verify mapping
    • HV and threshold scans with LED data (2 weeks after install) --- TBD
      • Duplicate scans of HV and thresholds as used in laser test setup (see below)
      • Determine initial HV and threshold settings for LED and beam data
    • Initial time offset calibrations with LED data (3 weeks after install) --- Yunjie
  • November 19 - December 19 (commissioning with beam):
    • Complete integration with DAQ under low-intensity beam conditions: (1 week)
      • Evaluate scaler rates and distributions relative to MC predictions
      • Mask any noisy channels for production data
      • Determine what global parameters can be optimized (beam current, bar box position, etc.) can be optimized
    • Production data taking with all sub-detectors in nominal condition (2 weeks, production overnight)
      • FCAL-BCAL production physics trigger with interleaved DIRC LED and random triggers
      • Collect sufficient statistics for optical alignment with identified ρ and φ, as well as more
    • Intensity scans ** (1 week, production overnight)
  • Evaluate rate dependence and backgrounds for both high and low luminosity
  • Scans of fixed amorphous radiator and varied current from 50 - 300 nA

Datasets to acquire with integrated DAQ

HV and threshold scans

  • Similar set of HV, MAROC gain, and threshold settings as laser setup for comparison with final implementation
  • Validate MAPMT characterization with both LED calibration and beam data