General Meeting Summary 4/12/17

DETECTORS AT JLAB (Arthur, Hamlet, Vardan, Greg)

• Aerogel

• SP-11 tray now has the additional structure installed to accommodate the 9th layer of aerogel tiles

• Picture without reflector
• Picture with reflector

• action item: install the last layer of aerogel and wires, install cover, mark tray, setup tray installation in SHMS

• Fire safety issues in EEL related to aerogel detector have been addressed

• Boxes (~100) are currently stored in room above Walter's machine shop.
• action item: ask about storing these boxes in physics storage building

• Discussion about aerogel detector documentation in Hall C Wiki - Arthur will check if any additional info needed

• NPS prototype - working on chiller selection

• GluEx DIRC - discussion about transporting bars from SLAC to JLab (Greg)

• recent decision is to use digital cameras for monitoring during transportation (resolution, compact) - a suitable model has been selected, but still need to test the performance in actual conditions, e.g., lighting is an important parameter
• work on monitoring software is ongoing
• time frame is now July/August for transporting

• EIC DIRC - discussion about ordering the new lens for test beam tests (T9) at CERN

DETECTORS AT CERN (Rachel)

• Pixel detectors are installed and running - taking cosmic data
• Forward pixel detector has now been included into the global run environment - configured and taking data through the global pipeline

• works well - some details like timing off by a few bunch crossings, but ok for now, data not yet used for alignment etc., working on improvements in software and timing

• Discussion about HEP lab space at CUA
• Discussion about writing of TDR reports

PBWO4 AT CUA (Richard, Andres)

• prototype mechanical assembly largely complete - a few pictures can be found here

• Next: calibrations (vertical motion, rotation, vibration)

• APD-based readout - test setup complete for measurements in noise-controlled environment

• Next: take data in noise-controlled environment and compare

DATA ANALYSES (Salina, Vardan, Arthur)

• Salina plans to analyze Hall A 12 GeV JLab DVCS data to extract the neutral pion cross section - plans a meeting with the DVCS spokespeople for approval of this analysis

• TCS figure of merit - send out request for an independent evaluation of Vardan's analysis

• if assumptions are ok and Vardan's results hold, proceed with proposal based on competitiveness with HDICE experiment

NEXT MEETING: WED. 19 APRIL AT 10:00 AM (EDT)