Extended Pid in PHENIX (assembly and integration) CDR review 07/28/2003, presented by E. Kistenev 7/28/03
Retaining PHENIX edge at High PT • (1) coverage 4 m 2; • (2) cell size 11 x 22 cm 2; • (3) geometry 10 x 16 cells. TOF Aerogel Needs To. F backing to deliver on promises
Construction readiness Item Current Readiness Completion Aerogel 50% available early September PMT’s available Boxes 50% available pc-boards In Tsukuba Mech. components Known problems: Side plates, HV protectors, lid extractors, lid holders. Purging system Needs strawman design and component ordering (Ruga/Pisani/Mike/Carter) Preamps ~available, missing details of the box&mechanics design August Cabling (LV/signal) understood and ordered/available Cabling (HV) options known&understood, still looking for chip solution Infrastructure See P. Kroon’s talk
Aerogel Counters -build laminate container; -load aerogel into container; -assemble lid (pc board + lid itself); -install PMT’s, LED, gas connectors and solder all internal leads; -test assembled lid in the black box. - install side bars onto the counter box; - load container; - install lid; - test assembled counter for light leaks. Repair leaks …. .
Building Arrays -A-frame -array skeleton;
Cabling: • • • trays; preamp boxes; HV&signal cables; Gas connections: - manifold; distribution lines; System test: - purge; raise HV; trigger LED’s; test for the signals on preamp input/output using scope, check for the light leaks; Live support
Logistics Clean Area 8/11/03 Storage Area 8/11/03 Components in Storage 8/18/03 Work benches available 8/11/03 All personnel at BNL 8/18/03 Work planning meeting 8/18/03 Counters for the first Array ready 9/8/03 A-frame ready 9/10/03 First (North) Array ready 9/19/03 Job coordinator/chief tech in the Assembly Area: Mike Lenz
Integration in PHENIX Racks: Symmetrical configuration North&South; Narrow racks are sufficient to run Aerogel component; LV crate HV crate Aerogel (RICH) FEM & Interconnects LED drivers Wide rack are for the To. F component & Trigger Gas: N 2 is the boil-off from the LN 2 tank. Heating is due to the long transfer lines (is winter is of concern, do we need to control gas temperature? ). Flowmeter (limit ~ few x 100 lph) in the gas house, same for the filter.
K- Goals D+ September 19 th First Aerogel Array ready for Installation. _ D 0 p+ u e+ K+ po pg g October 1 st North Aerogel Array installed; North Aerogel Rack fully tested and installed (request from JH – FEM to 1008 now); October 10 th North Aerogel Detector is in Big Partition.
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