November 24, 2004
Tracker Production Review Team
Discussion
Currently the late production of the GLAST LAT tracker
towers is on the GLAST and GSFC code 400 top 10 list. A Tracker Production
Review Team (TPRT) has been formed that will draw from GSFC and outside
personnel and work closely with the existing tracker team members to review
critical technical issues in the tracker subsystem that are threatening
schedule and make recommendations to GLAST and LAT project management of any
actions required to minimize production delays in the production of
flight-worthy LAT trackers.
The team should examine the following areas:
- Review
the technical issues in the MCM production
- Pitch
Adaptor trace cracking
- Wirebond failures
- Pitch
Adaptor debonding
- Overall
workmanship issues
- Production
rate issues
- Review the technical issues in the Flex
cable fabrication
- Plating
separation
- Annular
ring misregistration
- Overall
workmanship issues
- For
both of these technical areas, review how the technical issues are being
addressed
- For
both of these areas, review the risk-mitigation plans for the schedule
risks
- Make
specific recommendations to GLAST and LAT project to improve processes and
yields
The team may modify this charter with the concurrence of
GLAST and LAT management.
Team Members
Dick Quinn – Lead
Paul Baird – Mechanical
Ken Wager – Electrical
Ben Rodini –
Materials
Jim Lohr – Q/A
Robert Johnson – Advisor
Tom Venator – Advisor
Proposed Agenda
Proposed kickoff 12/1:
9:45 to 10:00 Overview and Introductions (Persis Drell)
10:00
to11:00 Tracker design overview. (Robert
Johnson)
11:00 to 1:00 MCM
design and issues, plan to address technical issues, risk mitigation plans.(Robert Johnson, Charlie Young)
1:00 to 2:30 Working lunch and visit to clean room
(Robert Johnson, QA support)
2:30 to 4:30 Cable
design and issues, plan to address technical issues (Dave Nelson)
Risk mitigation plans.(Hartmut Sadrozynski)
4:30 to 5:30 Production
status and open issues in Italy
(Robert Johnson)
5:30 to 7:00 Wrap
up and debrief
7:00 PM No
host dinner (California Café)
Goals:
- Familiarize
team with tracker design.
- Review
MCM production issues and MRB open actions to ensure adequate design and
support engineering and readiness for remaining production. Review and
recommend any changes to the rework plans for the existing MCM assemblies,
including those already mounted to trays.
- Review
Cable design and issues. Are cables that pass current screening good
cables? Is the Parlex process going to give us good cables?
- Define
additional areas of concentration.
Meeting at Teledyne 12/2:
- View
hardware.
- Teledyne
response to questions/issues from kickoff.
Meeting at Parlex 12/8 (TBD):
- View
existing cables and tooling/etc.
- Parlex
response to question/issues from kickoff.
Closeout review at SLAC second week of
January.
Final Report/Documentation end of January.