ePIC pfRICH General meeting

US/Eastern

Meeting Minutes

Summary: The meeting discussed sending Lexan samples for radiation testing and proposed directly measuring the spectrum with a spectrometer. Updates were provided on improvements to LUT for PID detectors and the mirror test stand setup. Technical questions were raised about preamplifiers and amplifiers, as well as operational voltage levels for proximity focusing.

Key Points:

  • Bill mentions sending Lexan samples for radiation testing and initiating a conversation about the materials' suitability for radiation exposure. (9:07)

  • Brian provides an update on the improvements made to lookup tables for PID detectors, detailing changes in simulation methods, geometry, and event statistics generated for testing. (11:03)

  • Kong presents the improvements made to the mirror test stand setup, including automation features, camera integration, and precise control over angles. (32:27)

  • Alex proposes directly measuring the spectrum with a spectrometer to address concerns about the accuracy of the wavelength scale. (48:10)

  • Alex provides a detailed overview of the setup, including the components and plans for consolidation on a new test stand. (55:40)

  • Prakhar raises technical questions regarding preamplifiers or amplifiers before the digitizer and the length and attenuation of signal cables. (58:49)

  • Beni questions the operational voltage levels for proximity focusing and receives clarification from Alex about the desired operating range and considerations for resolution and tail elimination. (1:02:01)

  • Alex suggests wrapping up the meeting due to time constraints and invites any final points for discussion before concluding. (1:07:24)

Next Steps:

  • Bill is to send Parker some Lexan samples for the radiation test. (9:09)

  • Alex to contact Trucker regarding materials testing, specifically Lexan and glue used for bonding. (9:58)

  • Kong to properly set up the mirror test stand at BNL, including aligning the source, setting the zero degree correctly, adjusting angles precisely, and automating the setup to avoid manual adjustments. After completing the setup, repeat the measurements for the reference mirror and systematically measure coated mirrors from evaporation one to nine. Kwong will also need to figure out how to mount the mirrors and plan for future coding with a standard holder for testing the mirrors. (32:29)

  • Sean to thank Kwong and Bill for efficiently transitioning the mirror test stand setup from the drawing stage to an operational state in the lab. (44:25)

  • Alex to finalize the plan for minimizing the gain of the first MCP based on the discussion during Mark Popecki's presentation. (1:06:33)

There are minutes attached to this event. Show them.
    • 12:00 12:20
      Stony Brook vessel & mirror PED work update 20m
      Speakers: Alex Eslinger (employee@jlab.org;member@jlab.org), Charles-Joseph Naïm (Stony Brook University (CFNS)), Wenliang Li (Stony Brook University CFNS)
    • 12:20 12:40
      Purdue vessel & mirror PED work update 20m
      Speakers: Alex Eslinger (employee@jlab.org;member@jlab.org), Andreas Werner Jung (member@cern.ch), Sushrut Karmarkar (Purdue University (USA))
    • 12:40 13:00
      LUT tables: a summary for the May campaign 20m
      Speakers: Brian Page (Brookhaven National Laboratory), Matt Posik (Temple University), Youqi Song (Yale University)
    • 13:00 13:20
      First results from the mirror test stand at BNL 20m
      Speaker: Zhoudunming Tu (BNL)
    • 13:20 13:30
      First look at the HRPPD #15 at BNL 10m
      Speakers: Alexander Kiselev (BNL), Brian Page (Brookhaven National Laboratory)