Spine Progress

R. Bates

Status

• MT, PA, HGM and I visited IHEP (29/03/203)• Spine production explained

– NIIGraphite• Produce raw TPG

– NIITAP• Machine/polish and coat TPG• Produce all ceramic parts

– IHEP• Assemble Spines (including washer at CERN)• Manage project in Russia

• And production bottlenecks explained

Towards faster delivery

• Two new contracts for spine production to finish by 1st Jan 2005– NIIGraphite; cost = 19100USD

• Increased TPG production

– IHEP (subcontracts to NIITAP); cost = 31500USD• Increase Ceramic production, TPG polishing/machining• Increase spine assembly, including CERN based technician• Initial extra 7500USD then 3000USD for each month

production over 200 spines

Some action so far

• Regular phone meetings are held with IHEP• Better book keeping of spines at CERN• Greater understanding of bowed spines• Reduced spine damage in transport• More washer gluing jigs at CERN• Faster assembly at IHEP (double shifts)• New, fast, TPG production schedule produced by

NIIGraphite• Slight change in machined section of spine to increase

yield under investigation• Extra polishing equipment sourced at NIITAP

– Last two points will increase yield and rate at NIITAP

Present delivery rates

• Rates from database– Reason why NIKHEF is zero module production

• Spine rate just matching present module rate– Falls short of desired module rate

Spine and Module Rates(Spine numbers since 20/02/04)

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outer middle inner outer middle outer outer inner inner middle

Manchester Valencia Geneva Melbourne NIKHEF Freiburg MPI

Spine rate Good spine rate Good Spines in last month

Predicted Module rate Module rate in last month