General Meeting Summary 10/3/19

MAGNET (Bogdan)

• TOSP ready, temperature sensors installed
• First magnet test (post meeting update):

• The magnet test was performed with current up to 200 A (20% of nominal). The field was found within 2% of expected.
• Next step will be with 250 A and full spec: 5 Gauss boundary.
• After that ODU will schedule to do mapping.

PMT AND HV DIVIDER

• Follow-up on previous meeting action items ongoing, updates at next meeting
• V. Popov produced new optimized base - will be tested in Hall D
• Number of PMTs and inspection:

• Currently have 542 PMTs in the cleanroom: 392 + 150(8/20/2019)
• The diameter has been measured for more than 200 PMTs - none have been close to critical dimension, all have ~200um of clearance
• Action item: Make list of PMTs

FRAME AND SIMULATIONS (Carlos)

• Background sources track-down ongoing, anticipate to show results at next meeting
• Frame construction is proceeding well and on schedule

• receiving parts
• final box design complete - in discussion with Paulo to make sure that everything fits in the hall, e.g. with beam pipe and magnets

• Discussion about availability of people for NPS assembly

• Timeline: starting in or after September - decide on final schedule in January 2020
• Tasks: anticipate 2-3 months work for 2-3 people - IPNO engineers will provide training at start of assembly

CRYSTAL STATUS (Vladimir, Tanja)

• Current count: ~350 Crytur crystals received and inspected (no rejections, one crystal sent back for repolishing)
• Next orders: expect +300 (+64) Crytur crystals (~500 SICCAS for FCAL)
• Check on additional Crytur order (~200) in next calendar year to offset ~145 currently in Hall D
• Action items:

• Make list of Crytur and SICCAS crystal orders (when ordered, when received, when inspected)
• Make list of crystal properties

CRYSTAL PAPER (Vladimir, Tanja, Carlos, ...)

• Please send comments - idea is to submit for publication before end of the year

INFRASTRUCTURE - NPS ANGLES AND DISTANCES (Julie, Paulo)

• For elastic kinematics for calorimeter calibrations need smallest possible angle - 6 degrees at 4m
• Action item: document minimum angles and distances for the general NPS facility

NPS COLLABORATION MEETING 2020 - MONDAY 3 FEBRUARY, 2020

• Plan for week of February 2, 2020, adjacent to Hall A Winter Meeting

NEXT MEETING: THURSDAY 31 OCTOBER AT 9:00AM (ET)