General Meeting Summary 5/31/18

DISCUSSION PAC46

• Positron LOI - agreement to join as NPS collaboration, some discussion about the format, e.g. Hall C only or all, listing of names

• TCS proposal

• Discussion about acceptance, must be folded in, in particular make very clear that there is a region in t where one cannot detect much
• Discussion about beam time request - should be divided into components: physics, configuration, checkout
• Agreement to join proposal as NPS collaboration

• Action item: update collaboration list and circulate

MAGNET ASSEMBLY

• All pieces are in test lab and ready to be assembled

CRYSTAL UPDATES

• Presentation of irradiation studies at IPN-Orsay and comparison of measurements with same crystals at Giessen U.

• For this subset, 2/10 crystals fail NPS specifications (J11, J23) - these also failed when tested at Caltech and CUA

• Overall very good agreement between Giesssen and Orsay results

• Discussion about 450 crystal procurement

• Manufacturing uncertainty at Crytur - even after discussion with Rainer no change in pricing
• Production process uncertainty SICCCAS - company now agreed to replace crystals and discuss about quality control optimization
• Decide to make decision on path forward in week of June 11

HV BASES

• Received new bases and sent to Chris/Fernando for quality checks - looks good

• Full order put in on May 17 - should receive in beginning of June

• Sockets received at OU too - ready to start assembly and testing

• Discussion about cable length from base to patch panel and cable type - have not really decided yet, depends on outcome of cabling studies at IPNO

• 35 PMTs will be brought from OU to JLab in week June 18

NEXT MEETING: THURSDAY 14 JUNE AT 9:00 AM (EDT)