General Meeting Summary 10/18/18

MAGNET (Bogdan)

• Assembly is nearly done - see this picture

• not yet closed as still need to attach upstream coil
• expect to be fully assembled this week

HV BASES (Julie)

• Assembly and testing is ongoing

FRAME AND PROTOTYPE TESTS (Carlos)

• Working on optimizing construction and minimizing material between crystals - prototype tests ongoing

• Current idea for assembly is to assemble from the back and use rectangular plastic clips/frames at the front to hold assembly together

• Tests being performed with prototype include mechanical assembly procedure, thermal tests, and perhaps magnetic field tests

• Discussion about cabling plans

• based on Frascati experience with PDME, a cable chicane may not be necessary - a light tight channel may be sufficient, but it is important that it also has air flow
• multiwire cables are generally rigid and might be difficult in assembly
• overall idea is to get cables our of box, then at a distance of ~1m have a transition box to multiwire cables and then these would go wherever needed
• Bogdan can send a reference for HV connectors used in Hall A calorimeter/coordinate detector
• IPN-O will do a few tests with multiwire cables to test structure - note that box size should be as small as possible

• Discussion about infrastructure outside box - further discussion in November with engineers/designers at JLab

READOUT (Alexandre)

• Component are mostly available modulo 1-2 additional VXS crates

• Test setup in SHMS for cables and background tests

• Plan is to start on beam test setup during the next extended down period

• availability of 3x3 crystal prototype: hardware currently disassembled, could be reassembled in a few days
• monitoring/curing system hardware also available

CRYSTALS AND PROTOTYPE (Vladimir, Sasha)

• Assembly nearly finished - see this picture

• currently installing light monitoring system

• Plan is to move detector to Hall D next week Tuesday and power up to check all channels - platform should be available in November

• First five crystals from Crytur are being tested - quality seems very good. Next six to be shipped before end of the month. Discussion about future procurement ongoing

NPS COLLABORATION MEETING

• Defer until next meeting when perhaps dates of Hall A/C winter meetings are known

NEXT MEETING: THURSDAY 8 NOVEMBER at 8:00AM (EST)