1. GLAST Large Area Telescope:
Gamma-ray Large Area Space Telescope
GLAST Large Area Telescope:
Tracker Subsystem
WBS 4.1.4
6A: Fabrication Overview
Robert Johnson
Santa Cruz Institute for Particle Physics
University of California at Santa Cruz
Tracker Subsystem Manager

2. Tracker Production Overview
Module Structure (walls, flexures, thermal-gasket, fasteners)
Engineering: SLAC, Hytec, Italy
Procurement: SLAC, Italy
SSD Procurement, Testing
Japan, Italy, SLAC
SSD Ladder Assembly
Italy (G&A, Mipot)
10,368
Tracker Module Assembly and Test
Italy
2592 18
Tray Assembly and Test
Italy (G&A, Mipot)
342
342
Electronics Design, Fabrication & Test
UCSC, SLAC (Teledyne)
648
Composite Panel & Converters
Engineering:
SLAC, Hytec, COI, and Italy
Procurement: Italy (Plyform)
Readout Cables
UCSC, SLAC

3. Assembly by Corporate Vendors
SSD Ladder Assembly (Italy)
G&A Engineering (in progress)
Mipot (PRR in April)
Electrical tests by INFN personnel
Composite Panel Assembly (Italy)
Plyform (PRR in April)
Tray Assembly (Italy)
G&A and Mipot
Bond SSDs to panels
Wire bond to the MCMs
Encapsulate wire bonds
MCM Assembly (USA)
Teledyne Electronic Technologies
Bond pitch adapter
SMT soldering
Die attach and wire bonding
Electronics test by UCSC personnel
Encapsulation and conformal coating
G&A, Plyform, and Teledyne all participated in the Engineering Model fabrication.

4. Assembly Work at LAT Institutes
Italy
SSD Receiving and Testing
INFN Pisa
INFN Perugia
Mount MCMs onto trays (and test electronically)
Test finished trays and assemble into tower modules
USA
Wafer probing of ASICs
UCSC
Burn-in and thermal cycling of completed MCMs
SLAC