GLAST LAT ProjectF-to-F, March, 2005 4.1.4 TrackerR. Johnson 1 GLAST Large Area Telescope: Tracker, W.B.S 4.1.4 Face-To-Face March Meeting Robert Johnson.

Slides:

Advertisements

Similar presentations

Tracker Subsystem1 GLAST LAT Project FM8/14 PSR, Oct. 5, 2005 GLAST LAT Tracker Towers 8/14 Pre-Ship Review INFN-Pisa.

Advertisements

GLAST LAT ProjectMarch 24, A Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS A: Tracker Test Plan Overview.

GLAST LAT ProjectMay 20, 2003 LAT Engineering Meeting Tracker, WBS GLAST Large Area Telescope: Tracker Subsystem WBS Revisions to Tray Design.

GLAST LAT ProjectMonthly Review, September 1, Tracker SubsystemR. Johnson 1 GLAST Large Area Telescope: Tracker, W.B.S August Status Meeting.

GLAST LAT ProjectMonthly Status Meeting, June 30, Cost/Schedule Reports for 4.1 LAT Presentation Presentation May 2005 Month End Gamma-ray Large.

GLAST LAT ProjectOctober 14, 2002 Tracker, WBS GLAST Large Area Telescope: Tracker Subsystem WBS Engineering Meeting Tracker Engineering-Model.

GLAST LAT ProjectMonthly Status Review – Sept. 1, 2005 GLAST Large Area Telescope: Performance & Safety Assurance Joseph Cullinan SLAC Performance & Safety.

GLAST LAT ProjectMonthly Status Review – December 2, 2004 GLAST Large Area Telescope: Performance & Safety Assurance Darren Marsh SLAC Performance & Safety.

GLAST LAT ProjectSubsystem Managers Face to Face, November 17, GLAST Large Area Telescope: Darren Marsh Stanford Linear Accelerator Center Performance.

Tracker Subsystem1 GLAST LAT Project FM4/5 PSR, May 31, 2005 GLAST LAT Tracker Tower-4/5 Pre-Ship Review INFN-Pisa.

GLAST LAT Readout Electronics Marcus ZieglerIEEE SCIPP The Silicon Tracker Readout Electronics of the Gamma-ray Large Area Space Telescope Marcus.

3 May 2005Claudio Campagnari (UCSB)1 Status of Rod Production at UCSB This report covers the last two weeks Reporting for: Dan Callahan Susanne Kyre Stephen.

GLAST LAT ProjectF2F, June 15, 2005 GLAST Large Area Telescope: Performance & Safety Assurance Joseph Cullinan SLAC Performance & Safety Assurance Manager.

MRB on SLAC NCR 226 MCM Encapsulation Delamination R.P. Johnson January 3, 2005.

November 17, 2004Tracker1 Tracker November System Manager Meeting R.P. Johnson U.C. Santa Cruz.

GLAST LAT Silicon Tracker Marcus ZieglerIEEE The Silicon Tracker Readout Electronics of the Gamma-ray Large Area Space Telescope Marcus Ziegler.

GLAST I&T January T Borden 1 Tracker EM Mechanical Mock-up T Borden I&T Tracker Mock-up.

Tracker Subsystem1 GLAST LAT Project FM-B PSR, 10 Feb, 2005 GLAST LAT Tracker Tower-B Pre-Ship Review Luca Latronico INFN-Pisa

GLAST LAT ProjectF-to-F, June 15, DAQ & FSWV1 1 GLAST Large Area Telescope: Electronics, Data Acquisition & Flight Software W.B.S Face-To-Face.

GLAST LAT ProjectSubsystem Managers Meeting May 12, GLAST Large Area Telescope: Lowell A. Klaisner Stanford Linear Accelerator Center Project Manager.

Tracker Subsystem1 GLAST LAT Project FM6 PSR, July 21, 2005 GLAST LAT Tracker Tower6 Pre-Ship Review INFN-Pisa.

GLAST LAT ProjectF-to-F, June 15, TrackerR.P. Johnson 1 GLAST Large Area Telescope: Tracker, W.B.S Face-To-Face June Meeting Robert Johnson.

GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 1 GLAST Large Area Telescope: Tracker Subsystem MCM Production Readiness.

GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Aug. 14, 2001 Robert P. Johnson 1 GLAST Large Area Telescope: Silicon-Strip Tracker/Converter.

1 GLASTGLAST Pisa GLAST Italia meeting, 18/02/02 A.Brez – INFN Pisa GLAST:Gamma Ray Large Area Telescope Ladders, Trays and Towers Construction A.Brez.

GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 1 8 NCRs were generated during TMCM preproduction NCR #00029, CLOSED.

GLAST LAT ProjectMonthly Review, March 30, DAQ & FSWV1 1 GLAST Large Area Telescope: Electronics, Data Acquisition & Flight Software W.B.S

GLAST LAT ProjectMarch 24, D Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS D: Composite Panel Fabrication.

Tracker Production Overview Readout Cables UCSC, SLAC (Parlex) SSD Procurement, Testing SLAC,Japan, Italy (HPK) Electronics Fabrication, burn-in, & Test.

Silicon Meeting July 10, 2003 Module and Stave Production Status James Fast Fermilab.

GLAST LAT ProjectMonthly Review, November 3, 2004 Tracker SubsystemP. S. Drell 1 GLAST Large Area Telescope: Tracker Subsystem WBS Persis S. Drell.

GLAST LAT ProjectMarch 24, C Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS C: Ladder Fabrication A. Brez.

GLAST LAT ProjectMarch 24, A Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS A: Engineering Model Tower.

GLAST LAT ProjectMarch 24, B Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS B: Schedule Summary; Critical.

GLAST LAT ProjectMarch 24, G Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS G: Tower module assembly A.

GLAST LAT Project DOE/NASA Review, March 31, GLAST Large Area Telescope: Lowell A. Klaisner Stanford Linear Accelerator Center Project Manager

GLAST LAT Project – Cost and Schedule ReviewJanuary 27, 2004 AntiCoincidence Detector 1 GLAST Large Area Telescope: Cost/Schedule Review January 27, 2005.

GLAST LAT ProjectSLAC, May 14, 2003 A.Brez 1 Honeycomb grounding of the GLAST trays Tray electrical conductivity: Carbon Carbon, carbon fiber and Al core.

GLAST LAT ProjectMarch 24, B Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS B: EM Mini-Tower Robert Johnson.

Tracker SSD Ladder Preproduction Review Actions and Changes Since Last Week September 16, 2002 Alessandro Brez Robert Johnson.

GLAST LAT ProjectMonthly Status Review – June 30, 2005 GLAST Large Area Telescope: Performance & Safety Assurance Joseph Cullinan SLAC Performance & Safety.

Tracker Subsystem1 GLAST LAT Project TRAY DELTA MRR, 18 Nov., 2004 GLAST LAT Tracker Delta Manufacturer Readiness Review for Tray Assembly and Test at.

GLAST LAT ProjectMarch 24, F Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS F: Tray assembly A. Brez I.N.F.N.

MRB on SLAC NCR 226 Excess of Disconnected MCM Channels R.P. Johnson November 9, 2004.

GLAST LAT ProjectMarch 24, C Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS C: Electronics Module Testing.

GLAST LAT ProjectPisa 9/1/04 A.Brez 1 GLAST Large Area Telescope: Grid interface proposal Alessandro Brez INFN Pisa Gamma-ray Large Area Space Telescope.

GLAST LAT ProjectMonthly Status Review – Nov 3, 2005 GLAST Large Area Telescope: Performance & Safety Assurance Joseph Cullinan SLAC Performance & Safety.

GLAST LAT ProjectMonthly Status Review – December 15, 2003 GLAST Large Area Telescope: Performance & Safety Assurance Darren Marsh SLAC Performance & Safety.

GLAST LAT ProjectMarch 24, E Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS E: MCM Assembly Gamma-ray.

GLAST LAT ProjectMarch 24, B Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS B: Electronic Parts & Materials.

GLAST LAT ProjectMarch 24, B Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS B: Silicon Strip Detector.

GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 1 LAT QA has hired a full-time on-site representative (Donald Knaepple)

Cable MRB July 13, 2005 R.P. Johnson. July 13, 2005R.P. Johnson2 Cable Status Needed in Italy to support Tower 8,9 Environmental Testing July 19.

GLAST LAT ProjectMarch 24, A Tracker Peer Review, WBS GLAST Large Area Telescope: Tracker Subsystem WBS A: Parts and Materials Procurement.

Charlie Young, SLACPitch Adapter Review 1/20/051 Trace Cracking Problem Pitch Adapter (PA).  2-mil Kapton.  ½ oz copper.  Nominal 150  -inch nickel,

GLAST LAT ProjectMRB 09/14/2005 L. Latronico1 Tower 14 – Layer Y0 malfunction MRB Meeting – 14 September 2005.

Tracker Timing Margin MRB R.P. Johnson U.C. Santa Cruz October 15, 2004.

GLAST Large Area Telescope:

Mini-Tower test results

GLAST Large Area Telescope:

Investigation on tray MID 063 Back

Preproduction Status & Results

GLAST Large Area Telescope:

GLAST Large Area Telescope:

GLAST Large Area Telescope:

Lessons Learned and Earned Value Management System Assessment

GLAST Large Area Telescope:

GLAST Large Area Telescope:

GLAST Large Area Telescope:

Presentation transcript:

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 1 GLAST Large Area Telescope: Tracker, W.B.S Face-To-Face March Meeting Robert Johnson Gamma-ray Large Area Space Telescope

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 2 Tower Status Towers A/B: RFI Tower 1: –One ladder shorted to its wire bonds while in thermal-vacuum testing. A bubble under the bias circuit pushes the ladder upward when in vacuum. –INFN Pisa has devised a procedure to remove and replace the two top trays without full tower disassembly. –The plan is to retest Tower-1 in parallel with Tower-3. The two towers thus will arrive simultaneously at SLAC. Tower 2: –Just successfully completed vibration testing. –An review is in progress to simplify and shorten the thermal- vacuum testing. Hopefully this can be applied to Tower-2.

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 3 Tower Status Tower-3 –Trays are being stacked and cabled today. An MRB yesterday approved use of 3 cables (on 3 different sides) from panels with bad coupons. –Sidewalls will arrive the middle of next week. Tower-4 –Steve Lungren is getting on a plane today to carry 22 MCMs to Pisa for Tower-4 trays. –A few trays are built, or being built, with old MCMs. –19 MCMs are in burn-in at SLAC. 5 will finish Saturday and the rest next Wednesday. We are arranging another hand carry to Pisa for the end of next week.

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 4 MCM Production We have not yet seen any evidence of encapsulation delamination and wire bond breakage during thermal cycles. –2 MCMs had ~20 missing channel connections initially at Teledyne. I’m still waiting to see if they change during thermal cycles. –1 MCM was reported yesterday to have a missing bias connection after thermal-cycles and burn-in. This needs more investigation. Problems with trace cracking have been almost eliminated. The new bonding fixture and the Dyconex pitch adapters will improve it even more.

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 5 MCM Production Restart WeekStartsMip-1Mip-2Mip-3Receive 1/ / / / / /

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 6 MCM Production Issues Parts problems –Pitch-adapter trace width (Titan) –PWB riser location error on tall boards –Kapton cover-layer on back side (DDI does it different on every lot, regardless of what our drawing says). Process problems –Pitch-adapter bonding; lots of rework and lots of rejects Poor alignment reproducibility Voids in the epoxy Problems with peeling –Pitch-adapter trimming Cutting into the PWB fiberglass I’m having this reviewed to make sure we don’t reject parts for purely cosmetic reasons (the fiberglass under the pitch adapter has no copper in it and hence no active parts). Teledyne management asked our program manager to shut down our production line because of cost over-runs associated with all the rework!

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 7 New Bonding Tool One tool has been tested and is at Teledyne (the photo here is before anodizing). Three more arrive at SLAC today. The results are far superior to the old Teledyne fixture. –Perfect alignment every time. –No voids. –Much less peeling. –Better flatness and perpendicularity for wire bonding at G&A. Rework and rejects should be drastically reduced.

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 8 LAT Efforts to Improve MCM Production Senior SLAC physicist working nearly full time on MCM production management (Charlie Young). Full time LAT QA inspector working in the production cell. LAT electrical test and inspection personnel in the production cell every working day. Frequent (weekly or more) trips to Teledyne by LAT QA (Richard Gobin). Frequent (twice weekly or more) trips by LAT physicists to oversee production at Teledyne. Second burn-in setup is functioning now at SLAC. Second pitch-adapter tester is working at Teledyne. New bonding fixtures should go into the production line next week. Improvements in the PWB layup to reduce short circuits. Pitch-adapter improvements, including 2 nd vendor.

GLAST LAT ProjectF-to-F, March, TrackerR. Johnson 9 Flex-Circuit Cables The barrel plating separation problem seems to be solved. But coupons still fail for annular ring violations. This is obviously going to be a potential issue for such long parts, and we are finding that we have to use cables from such panels. Risk of a failure is small, especially since most of the vias have redundant partners. Lots of other production problems, including contamination and workmanship issues. –Parlex is rejecting a majority of the parts before they complete fabrication. There is a very real possibility of delays in tower assembly because of lack of cables. We are back to pursuing the second vendor.