Tracker Subsystem 1 GLAST LAT Project TRAY DELTA MRR, 18 Nov., 2004 GLAST LAT Tracker GLAST LAT Tracker Delta Manufacturer Readiness Delta Manufacturer Readiness Review for Tray Assembly and Review for Tray Assembly and Test at G&A Test at G&A Luca Latronico INFN-Pisa [email protected]
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GLAST LAT Tracker Delta Manufacturer Readiness Review for Tray Assembly and Test at G&A
GLAST LAT Tracker Delta Manufacturer Readiness Review for Tray Assembly and Test at G&A. Luca Latronico INFN-Pisa [email protected]. Relevant Documents. LAT-PS-01801 Integration of TMCM and SSD Ladders onto Tracker Trays - PowerPoint PPT Presentation
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Tracker Subsystem 1
GLAST LAT Project TRAY DELTA MRR, 18 Nov., 2004
GLAST LAT TrackerGLAST LAT Tracker
Delta Manufacturer Readiness Delta Manufacturer Readiness Review for Tray Assembly and Review for Tray Assembly and Test at G&ATest at G&A
• Functional test by INFN with tray inside box– LAT-PS-03534
• DRB and shipping to INFN
WS-C Ladders integration
WS-D Final disposition
Ladder assembly tools
Tracker Subsystem 5
GLAST LAT Project TRAY DELTA MRR, 18 Nov., 2004
Availability of components and toolsAvailability of components and tools
• Bare panel trays after TVAC test in Roma2 – 27 trays available – planned supply is 4trays/day
• SSD Ladders from G&A and Mipot– ~1400 ladders available - 400 more from G&A (200 to test, 200 being built) –
900 will be built from Mipot asap
• MCM from SLAC through quick functional verification at INFN-Pisa– Currently 38+32– Could match 14 trays (26 TMCMs) from first lot of 38 because of connector stick-
out issue– 6 TMCMs sent back to SLAC for PA debondings
• Nusil at G&A for ~3/4 of tray production• G&A tools
– TMCM alignment tools: 5– Ladder integration tools (tray alignment + ladder bridges): 6– CMM: 2 (1 for alignments, 1 for metrology)– Glue dispenser: 2– wire-bonder: 2– 2 working shifts per day to grant production rate of 4 trays/day
• EGSE for functional tests– 1 full EGSE system installed at G&A and operated by INFN
Tracker Subsystem 6
GLAST LAT Project TRAY DELTA MRR, 18 Nov., 2004
• From INFN to GA:– List of subparts (ladders and TMCM) from INFN-Pisa
• From GA to INFN:– List of subparts with G&A reference SNs (neede for tray box)– Progress of assembly (weekly)
• Quality Assurance– Rely on G&A certified QA program for internal activity– Handle major NCR notified from G&A (MARECO) with Pisa system
Data exchange with INFN-PisaData exchange with INFN-Pisa
– 23 Si layers were within specs– 4 Si layers had short for problems related to
bias circuit delamination
• All went through thermal tests– 4 Si layers (bottom side of heavy trays) had
many disconnected channels because of CTE mismatch impact on wire-bond encapsulation MRB on wire-bond encapsulation
• 23 SSD layers operated successfully up to now
Tracker Subsystem 8
GLAST LAT Project TRAY DELTA MRR, 18 Nov., 2004
Metrology: with a CMM with interchangeable mechanical-optical heads, the positions of 12 “C” markers, 3 for each ladders, and the positions of the MCM alignment pins are measured on both sides of the tray.
silicon #1
silicon #3
silicon #2
silicon #4
L31
L32
L22
L21
L33
L23
L11
L12
L13
L02L02
L03
L01
MC
M s
ide
Pin 1
Pin 2
Pin 3
Pin 4
x
y
Metrology of ladders alignmentMetrology of ladders alignment
Tracker Subsystem 9
GLAST LAT Project TRAY DELTA MRR, 18 Nov., 2004
ladders alignment errors X
0
5
10
15
20
25
-0.1 -0.05 0 0.05 0.1
mm
top bottom top bottom top bottommid039 30.294 0.100 0.057 -0.082 -0.056 -0.019 -0.103mid050 30.202 0.069 0.047 -0.067 -0.067 -0.049 0.073mid079 30.408 0.099 0.126 -0.085 -0.051 0.132 0.115