Tracker Status

May 14, 2004

Tracker-Grid Interface

- Testing is in progress on evaluation hardware by pull testing.

- 34 cone-stud hardware sets are scheduled to arrive next week.

- Design work is in progress on tools for cone extraction, adjustment,

and alignment.

Bottom/Top Tray Panels

- The design details are completed and signed off.

- Insert machining started this week but was then halted when it was

discovered that the vendor shipped the wrong alloy. A decision was

made to use titanium. Inserts will be ready May 28.

- Machining of the assembly tooling is still in progress but should be

done next week.

- Closeouts and titanium parts are in Italy.

- Aluminum core for the bottom tray is on order, but existing cores can

be readily cut to size for the first towers.

Mid Tray Panels

- 15 (9 light, 6 heavy) produced through ESPI and GND testing.

- These were dimensionally checked and 2 rejected.

- 4 were completed through bias circuit bonding and passed vibration

testing at Centrotecnica.

Ladders

- Less than 1000 of the full order of 11,400 SSDs remain to be tested.

- 1055 ladders assembled, with 16 rejected.

MCMs

- Total of 21 received, including 12 this week.

- 11 more have been shipped from Teledyne, and 7 should ship today,

giving a total sufficient for Tower A.

- 6 completed thermal cycles and burn-in and passed final test, but

were locked up by QA for procedural nonconformance.

- The burn-in system with EM-2 TEM/PS was acceptance tested according

a newly released procedure this week.

- 12 completed thermal cycles and are starting burn-in.

Tray Assembly

- G&A is completing tests of the new tooling and procedures for MCM

mounting.

- MCM mounting pin design was completed and is out for release. These

objects need to be machined and plated before tray assembly can

begin.

- Work is in progress on updating the relevant assembly drawings.

- The procedure document is out for review.

Sidewalls

- Prepreg for the first couple of towers should be delivered next week.

- The fabrication specification document is out for release.

- Drawings have been released.

- Titanium washers are being procured.

Flex-Circuit Cables

- The designs are complete and reviewed and final redlines are being

incorporated.

- A final check of mechanical vs electrical designs will be done and

the drawings sent out for release next week.

Tower Assembly and Alignment

- A conceptual design was completed for an aluminum part to go on

the top of the tower to fasten the cable ends and also support

the alignment retroreflectors.

- We determined that the tower mockup being assembled by AI&T can

and will be used to debug and prove the alignment software and

procedure.

GSE

- The lifting fixture design is still in progress but converging.

- The vibration fixture drawing is out for release.

- The cable restraining plate is under design.

- Cable bending tools are being designed.