# Presentation: 703921

## Schedule

_**Schedule**_

- Started !

- Done

- Done

- Late

- Done

- Done

- Done

- Done

- Done

- Started !

- PMG, July 6, 2000

## Action Triggers

- Currently:
- 4.5 disks complete
- 2.5 barrels complete
- Slightly behind schedule but no action trigger called for

- PMG, July 6, 2000

## Sensor Delivery 

- Axial detectors (3-chip):
- All sensors in hand
- 90o detectors, DSDM (6-chip):
- ~37 sensors still to be delivered
- assumes we accept lower grade devices (14)
- “buy one, get one free” deal with Micron
- This will introduce slight asymmetry in barrels; barrel 3 has only A grade devices
- production paced by sensor delivery
- Micron agreed to have all testing available for DSDM and (perhaps) add personnel
- Need to keep pressure on
- 2o detectors (9-chip)
- Still to deliver 27 (lyr2), 4 (lyr4) sensors
- Should be able to finish by end of the month
- Most likely not necessary to call into effect fallback
- Fallback: Accept sensors which have higher Rbias , ~50 sensors have been identified
- F-Wedge sensors
- 	Micron:
- All 125 sensors received
- 	Eurisys:
- Order of 65 sensors complete, 5 missing prototypes recovered
- Enough sensors on hand to build full complement of F disks
- But, breakdown Voltage 70 - 80V at Vdepl=15-20 V for most
- Negotiating to exchange sensors: 12 returned Monday;expect exchange by 17 (12+5 prototype)

- PMG, July 6, 2000

## Sensor Delivery

- _Sensor Delivery_

- H Wedges
- All sensors needed in hand. Sensors still need to be tested

- 

- 

- ()

- PMG, July 6, 2000

## High Density Interconnect Status

- 3-chip hdi’s
- done
- 6-chip hdi’s
- All hdi’s in hand
- 45 to be stuffed at Promex
- 9-chip hdi’s
- all hdi’s in hand, to be laminated
- 26 hdi’s at Promex for stuffing, 48 to go
- F-wedge hdi’s
- All hdi’s in hand
- ~33 to go for stuffing at Promex
- H-wedge hdi’s
- All hdi’s in hand
- 30 to go for stuffing at Silitronics

- Total to be stuffed:
- Promex: ~120
- Silitronics: ~30

- PMG, July 6, 2000

## Ladder and Wedge Production

- Axial detectors (3-chip):
- Ladder production has started again at slow rate
- Will use lag in 9-chip ladder production to finish off 3-chip ladders
- No problems foreseen
- 2o detectors (9-chip):
- Production lagging due to availability of hdi’s
- There will be a lag due to lamination and stuffing
- 26 hdi’s now at Promex
- 48 hdi’s to follow
- Expectation to have last hdi stuffed is September 1; hdi’s still will have to be tested and burned in before use in production.
- Production proceeding at very slow pace
- 90o detectors (6-chip):
- Paced by Micron delivery, 118 ladders built so far
- F Wedges (14-chip):
- Production proceeding at adequate pace
- Sensor and hdi availability not a problem
- Recently received most Eurisys detectors with low Vdepl
- Testing sensors is cumbersome
- H Wedges (6-chip):
- 177 half wedges produced to date, 155 A/B grade
- Half wedge production proceeding adequately
- Glued 38 full wedges of which ~25 detector grade
- Encapsulation and full wedge production is slow but not limiting process

- PMG, July 6, 2000

## Production Status and Projection

- _Production Status and Projection_

- Projected rates:			assumed yield	capacity
- 9-chip:     11.0/week 	      80%		    15/wk
- 6-chip:     6.1/week	      85%		    10/wk
- H-wedge: 6.2 week	      85%		    10/wk
- F-wedge:  4.9/week	      90% 		    15/wk
- Slopes for end game are getting steeper !Nominal completion date for ladder production still early September

- Nov 1, 00

- Aug 10, 00

- today

- 50% line

- PMG, July 6, 2000

## Production Status for first half cylinder

- Last dates for detector production keeping original schedule with completion August 1:
- F Wedges: June 26, 2000
- Few wedges still need to be glued
- 9-chip ladders: June 12, 2000
- Short by one ladder, which is built
- Four flavors of 9-chip ladders, current status

- “short tails”

- Overall delay of ~ 3 weeks with respect to schedule mainly attributable to hdi delivery

- PMG, July 6, 2000

## Production Rate 

- PMG, July 6, 2000

## F Disk Status

- Schedule extremely tight, given vacation leave of personnel and shifting of primary responsibilities

- PMG, July 6, 2000

## Barrel / Disk Assembly

- First barrel (barrel 6) completed May 18
- Grounding problems observed in first barrel, coherent noise
- barrel moved to address these problems
- Working on refitting barrel
- Retrofitting produced ladders with In soldering
- Takes an incredible amount of time: 1hr/ladder
- Second barrel (barrel 5) completed June 13
- barrel looks very nice “on the bench”
- Work on third barrel started
- should also look very nice
- All 6-chip ladders are A grade
- Some alignment problems encountered with the third disk
- Next F disks, one of end disk assemblies
- Ring now being prepared
- Some delay in the delivery of radiation monitor sensors
- Wedge production proceeding for future assembly, but we have to be very careful with regard to personnel
- H-disk developing CMM Zeiss programs for alignment of ladders on ring

- PMG, July 6, 2000

## Silicon Support

- All alignment measurements done at Lab 3
- Measurements with deflections at z=0 and twist still needs to be understood
- Outstanding issues:
- reinforcements of silicon support cylinder
- kinematic mounts
- Procedure for mounting cover on support cylinder
- Procedures being readied for
- removing barrels from rotating fixtures
- barrel/disk mating
- barrel/disk module insertion in support cylinder
- infrastructure for readout of barrel disk modules

- PMG, July 6, 2000

## Readout

- Schedule calls for move of first half support cylinder to DAB on September 15, 2000
- All assemblies installed in silicon support cylinder by August 15
- That is, we have a very short time in which to check out the various assemblies
- Interface Board design nearly complete
- Acceptable solution for cross talk
- Still some extra safequards being pursued
- termination of bus lines decided
- Controls and Monitoring features of board have been verified
- Board submitted for bid
- Shortage of dedicated manpower is a problem. Recall, the 10% test is 80,000 readout channels, more channels that the whole calorimeter, and as many channels as the whole fiber tracker!

- PMG, July 6, 2000

## Low Mass Cables

- As requested by Lehman review panel:
- Setup of milestones for low mass cables

- PMG, July 6, 2000