GLAST LAT Project Managers F2F 041305 4.1.9 - Integration and Test 1 GLAST Large Area Telescope:...

GLAST LAT Project Managers F2F 041305

4.1.9 - Integration and Test 1

GLAST Large Area Telescope: GLAST Large Area Telescope: Face to Face Managers MeetingFace to Face Managers Meeting

LAT Integration & Test LAT Integration & Test April 13, 2005 2:00 PMApril 13, 2005 2:00 PM

Integration and Test Integration and Test 2 towers and next six month2 towers and next six month

Elliott BloomElliott BloomI&T ManagerI&T Manager

Ken FoutsKen FoutsI&T Engineering ManagerI&T Engineering Manager

SLACSLAC

Gamma-ray Large Gamma-ray Large Area Space Area Space TelescopeTelescope



Last Month's Accomplishments (1 of 4)Last Month's Accomplishments (1 of 4)• Management

– Tracking hardware shortages for LAT integration.• Current shortages are two cables: Thermister cable assembly (LAT-DS-5055), Grid temp sensor cable

assembly (LAT-DS-5073)• IFCT

– Tower A• Validated new trigger test scripts from Trigger group • Receive and validated new CAL & TKR configurations • CPTs, trigger optimization, calibration, data collection, aliveness test completed• Van de Graaff testing completed • Completed Tower-A Single Bay Tests• Installed Tower-A in Grid Bay 0• Tower B• FM105 integrated with TEM/TPS-B• Completed Tower B installation into single bay test stand• Completed Tower-B Single Bay Tests• Installed Tower-B in Grid Bay 4• CAL• Removed and returned three (2) TEM’s and CAL 118 (spare) to NRL.

– MGSE• Completed rework of GPR.• Completed proof test of integration stand, GPR and PAP’s.• GPR fit-up to Grid Complete • Installed Grid into MGSE• Moved stand to B33 and installed in Rm 104.• Complete GPR lift off test to verify ACD clearance.• Completed “L” bracket rework to accommodate ACD with greater clearance.• Second Single Bay Stand Complete



IFCT (Cont’d)– Mechanical Systems

• Completed S/C Interface check• Completed weight and CG measurement

– Electronics• Tem/TEM PS A,B handover

– Completed safe to mate for ELX prior to hand-off

• Validated EM GASU– Validation in I&T identified errors that were reworked by ELX

requiring return to ELX and retest

• SVAC– Instrument analysis workshop with first flight tower data

completed March 10.– Successful turn around for calibration of single tower data (4

hours).– Offline data processing system under CCB and working.– First evaluation of single tower data complete.

Last Month's Accomplishments (2 of 4)Last Month's Accomplishments (2 of 4)



• Particle Test– Van de Graaff + BGO Monitor

• LAT-TD-01805-02• VG delivers 17.6 MeV gammas for I&T tests• Single tower testing complete.

– Muon Telescope (Bldg 33)• LAT-TD-04419-02• Working (~1 Hz) for I&T tests (Single Tower Bay + Grid)• Only gives an external trig when muon passes through the

tower• Used to complete single tower and trigger test.

– Muon Telescope (New) (B101 Central Lab)• Working (~.5 Hz) for I&T and test bed tests (Mini Tracker)

– Am241 Source• LAT-TD-04980-02, LAT-PS-06066• Source, procedure, handling equipment complete for single

tower tests• Tests in progress (2-3 hours). ECD 3/31




• Online– LATTE 4.8.1 released (need 4.8.2 due to PDU HKP fix)

• V&V’ed• Installed in Bldg 33 flight directories

– CAL V2 scripts assessment• CAL scripts under I&T online CCB control with only bug fixes.

CAL agrees to integrate any script changes via online CCB CM.

– LATTE /eLogbook • Installed in B33 workstations 4/6

– Continued supported of CAL, TKR, INT and test suites.– Supported data taking, trigger and E2E script development.– Problem assessment and fixes a large part of online workload

• NCRs, support for clean room operations, support of subsystems scripts.

– CCB activity and JIRA maintenance




Single Tower I&T SequenceSingle Tower I&T Sequence

Install TKR in single bay

Install CALin met bay

Install TEM/TPSin met bay

Install CAL/TEM/TPSIn single bay

TKR LPT(optional)

CAL CPT

TEM/TPS LPT(optional)

AlivenessTest

TKR CPTCAL CPT

TKR LPT (14/22MHz)CAL LPT (14/22MHz)

Trigger TimingOptimization

DataCollection

Van de Graaff TestAm241 High Rate

Test



Roadmap to Two Tower TestingRoadmap to Two Tower Testing

Grid mini-IRR

Rework GPR to Grid Brackets

Reinstall Grid in Integration Stand

Run Tower B LPT in Grid

Install Tower B in Grid Bay 4

Grid Survey

Install Tower A in Grid Bay 0

Run EGSE Validation in Grid

Run Tower A LPT in Grid

Install EGSE in Grid

Two Tower Testing(ECD 4/28)

Complete Tower B Single

Bay Tests



Two Tower Test Plan as of 4/12/05Two Tower Test Plan as of 4/12/05



I&T MGSE/Grid ActivitiesI&T MGSE/Grid Activities

Weight and CG on Grid GPR return from rework Proof test completion

GPR to Grid fit up Installing GPR and Grid in the Integration Stand

Integration Stand in the cleanroom



Fit Check for ACD ClearanceFit Check for ACD ClearanceACD in Place

Before GPR Removal

Potential Interference During GPR Removal



Final Grid weight & CGFinal Grid weight & CG



TEM/TPS-B + FM105 integrationTEM/TPS-B + FM105 integration



Two Tower IntegrationTwo Tower Integration

Installation of Tower A in Single bay

Tower A in Grid. Tower B being installed in grid.



I&T and Tracker Teams - Two Tower Installation I&T and Tracker Teams - Two Tower Installation



What is SVAC doing in the next 6 MonthsWhat is SVAC doing in the next 6 Months

• Supporting SAS in the – Design, debug, and maintenance of infrastructure for data

analysis

• Performing data analysis on instrument data (will elaborate on this today)– taken during the E2E and SVAC tests

• Coordinating the Collaboration effort through Instrument Analysis Workshops to– Disseminate the knowledge on how the hardware works– Disseminate the knowledge on how the software works– Create a foundation for ISOC to build on



Excellent Start…Excellent Start…

Calibrated muon peaksIn units of MeV

TKR only triggers

TKR + Muon telescope



Event Trigger Rate for Tower A 43

.5

43.8

43.5

43.7

43.2

0.5

53.2

47.8

42.9

35.2

5204

.410

85.6

34.7

34.0

33.8 43

.8

31.1

31.1

30.1

6.6

91.3

101.

389

.478

.981

.165

.0 82.9

80.2

38.6 47

.3

43.7

43.7

44.2

28.2 42

.442

.442

.110

4.0

103.

510

2.7

97.8

92.2

0

1

10

100

1000

10000

1350

0089

4

1350

0089

613

5000

898

1350

0090

0

1350

0090

213

5000

904

1350

0090

913

5000

915

1350

0091

813

5000

931

1350

0102

413

5000

990

1350

0092

113

5000

924

1350

0092

6

1350

0090

6

1350

0091

113

5000

912

1350

0091

313

5000

929

1350

0094

513

5000

946

1350

0094

713

5000

949

1350

0096

513

5000

968

1350

0095

113

5000

956

1350

0097

113

5000

975

1350

0093

313

5000

935

1350

0093

613

5000

954

1350

0093

813

5000

939

1350

0094

013

5000

958

1350

0095

913

5000

960

1350

0096

113

5000

962

Run ID

Rat

e (H

z)

Event Trigger RateEvent Trigger Rate

CAL_LO only

Am241

VDG1

kHz

5 kH

z10

kH

z20

kH

z

1 kHz

Ho

rizo

nta

co

smic

sl

4 rangeZero Sup OFF

10 KHz

10 kHz

VDG

Rates agree with expectations



Number of Error Events for Tower A 8 9

2720

73

8 9 10 100 0

917

8

42

03

751

672

268

1259 24

5321

5314

3516

2818

3056

17 181

136

13

1652

1600

1830

2276

1483

0

1

10

100

1000

10000

1350

0089

4

1350

0089

613

5000

898

1350

0090

0

1350

0090

213

5000

904

1350

0090

913

5000

915

1350

0091

813

5000

931

1350

0102

413

5000

990

1350

0092

113

5000

924

1350

0092

6

1350

0090

6

1350

0091

113

5000

912

1350

0091

313

5000

929

1350

0094

513

5000

946

1350

0094

713

5000

949

1350

0096

513

5000

968

1350

0095

113

5000

956

1350

0097

113

5000

975

1350

0093

313

5000

935

1350

0093

613

5000

954

1350

0093

813

5000

939

1350

0094

013

5000

958

1350

0095

913

5000

960

1350

0096

113

5000

962

Run ID

Nu

mb

er o

f E

rro

r E

ven

ts

Error Events for Tower AError Events for Tower A

Rea

d T

KR

fro

m

on

e si

de

on

ly

So far we found no packet or parity errors.Only FIFO TEM errors were found (OK) VDG VDG



Lower TKR thresholds : Number of hit planesLower TKR thresholds : Number of hit planes

0.22%< 6 planes

0.07%< 6 planes

Run 135000894, ID 1/1, TKR DAC ~ 30Run 135000894, ID 1/1, TKR DAC ~ 30

Run 135000896, ID 2/3, TKR DAC ~ 22Run 135000896, ID 2/3, TKR DAC ~ 22



High Rate RunsHigh Rate Runs

Am241 (TKR and CAL are allowed to trigger)

Only the pulse generator Is allowed to trigger (1 kHz)

Run 135001024, ID 4/5Run 135001024, ID 4/5

Run 135000990, ID 4/6Run 135000990, ID 4/6



GEM Time Interval : High Rate RunsGEM Time Interval : High Rate Runs

Run 135001024, ID 4/5Run 135001024, ID 4/5 Run 135000990, ID 4/6Run 135000990, ID 4/6

Run 135000909, ID 4/1Run 135000909, ID 4/1Run 135000915, ID 4/2Run 135000915, ID 4/2

Am241 @ 5 kHz(TKR and CAL are allowed to trigger)

Only the pulse generator

Is allowed to trigger (1 kHz)

TKR and the pulse generator are allowed to trigger (1 kHz)

TKR, CAL and the pulse generator are allowed to trigger (5 kHz)



VDG RunsVDG Runs

Tower boundary

Reconstructed XY positions

Fraction of events with 0 hits(red means 0 events)

Very few events make into the thick layers

~ 80% of events have at least one track

Run 135000946, ID 9/1Run 135000946, ID 9/1Trigger rate ~ 100 HzTrigger rate ~ 100 Hz



Process for Investigating Data Analysis IssuesProcess for Investigating Data Analysis Issues1. An issue is presented in the Friday’s Instrument Analysis meeting 2. SVAC ensures its traceability by documenting it in JIRA 3. SVAC follows up with subsystems/Collaboration to develop a list of potential root

causes:– Insufficient knowledge/documentation of data analysis files

– Could be just a calibration issue or lack of understanding of how data analysis variables are being filled

– Software “Bugs” in three areas– in the data analysis software– in the online/offline software– in the reconstruction software

– Insufficient knowledge/documentation of instrument operational settings– Could be just a feature given the current operational settings

– Insufficient knowledge/documentation of instrument performance– Could be a not well understood/exercised capability of the instrument prior to the

existence of integrated towers– Could be an environmental effect or “noise” external to the LAT, inherent ot the

experimental set-up – Idiosyncrasies of ground cosmic ray spectrum

4. After step 3 is done , we can propose a special test to gather more data (if necessary)5. Finally when we believe an issue points to a flight hardware problem, we

1. Present summaries in IA (Eduardo) or ANA (Steve) meetings, whichever happens first

– Bring it to the attention of all relevant subsystems and recommend strategy to solve the problem

2. Document the issue with System Engineering and I&T for disposition



Current Issues under investigationCurrent Issues under investigation

• CAL_HI and CAL_LO fired without any crystal hits• CAL_HI trigger fired without high energy deposition • Discrepancy between TKR multiplicities between DATA and MC in

electronics space • There is consistently 10-15% more triggers seen during the 5 and

10kHz runs than expected as measured by the exponential fit to the delta event time register of the GEM.

• TKR only triggers are around 85% (TBR) of the time when the muon telescope triggers

• Discrepancy between Data and MC for TKR dead channel list • Discrepancy calculated and measured event size• There seems to be a high incidence of reasonable looking events with

both CAL low and CAL high without a TKR trigger. These events generally had plenty of hits in the tracker

• Discrepancy between GEM and TriggerAlg for trigger types• Discrepancy in trigger rates for 1,5,10 and 20 KHz runs,

underestimated for low rates and overestimated for high rates at a few % level



I&T NCRs by Month Open/Closed StatusI&T NCRs by Month Open/Closed Status

Month NCR Opened

Current Status

0

2

4

6

8

10

12

14

16

18

Sep-04 Nov-04 Dec-04 Jan-05 Feb-05 Mar-05 Apr-05

Open

Closed

Count of Detailed Status

Open/Closed Status

As of April 12th

0

2

4

6

8

10

12

14

16

18

Sep-04 Nov-04 Dec-04 Jan-05 Feb-05 Mar-05

Count of Open/Closed Status

Last Month



Two Tower Test PreparationTwo Tower Test Preparation

• Open EGSE Item Status – PDU GASU support in the grid.

• Complete– Cable terminations at grid interface to EGSE

• MGSE complete.– EGSE locations (Test Crate and power supply).

• Location identified on Integration Stand• Complete and installed

– PDU Operational Constraints without SIU.• Complete

– Harness routings and tie downs.• Concept for routing and tie downs discussed.• Routings to be finalized on Grid.



EGSE Configuration for Two TowerEGSE Configuration for Two Tower

PDU

GASU



EGSE Configuration for Two Tower TestEGSE Configuration for Two Tower Test

EGSE Support Shelf added in two locations



Upcoming I&T EventsUpcoming I&T Events

– Accept Grid from Mechanical Systems (Complete)– Acceptance test EM PDU (ECD 4/13)– Install Tower B in Grid (Complete)– Build 2 tower test cables (Complete)– Receiving Tracker Tower 2 (Complete)– Complete 2 tower test procedure (Complete)– Two tower test power supply ready (Complete)– Installation of all two tower EGSE in room 104 (ECD 4/15)– Integration of Tower A and B into Grid & functional test

(ECD 4/13)– Two tower test (ECD 4/28)



I&T Detail Schedule (1 of 4)I&T Detail Schedule (1 of 4)ID Task Name Start % Compl ete Finish

336 Tower A Mon 11/22/04 100% Thu 4/7/05337 Readiness for I&T CAL CPT Mon 11/22/04 100% Fri 1/7/05356 FM101 Post ship test and receiving test Mon 12/6/04 100% Fri 1/14/05365 FM101 Post Test CAL Actions Thu 1/13/05 100% Fri 1/14/05368 Readiness for CAL Integration Mon 12/13/04 100% Tue 12/14/04372 Tracker A post ship test & receiving test Mon 1/3/05 100% Sat 2/5/05413 Readiness for I&T Tracker CPT Fri 12/10/04 100% Wed 2/2/05422 I&T TKR-A Receiving Test (LAT-PS-3290) Fri 2/4/05 100% Mon 2/7/05423 Readiness for Tracker Integration Wed 12/1/04 100% Thu 2/10/05434 Readiness TEM/TPS A Integration Wed 12/15/04 100% Fri 3/11/05455 Tower-A Test Bay I&T Thu 2/10/05 100% Thu 4/7/05521 Tower B Mon 1/10/05 77% Thu 4/28/05522 TEM/TPS-B Safe-to-Mate Tue 3/8/05 100% Tue 3/8/05523 FM102 Post ship test and receiving test Mon 1/10/05 100% Thu 1/13/05530 Tracker B post ship test & receiving test (AIDS 751) Mon 2/14/05 100% Mon 2/28/05540 TEM/TPS-B Handover Review Fri 3/11/05 100% Fri 3/11/05541 Receive 1st EM Gasu Thu 3/10/05 100% Mon 3/21/05542 Safe-to-mate 1st EM Gasu Mon 3/21/05 100% Tue 3/22/05543 redline procedures Mon 3/21/05 100% Mon 3/21/05544 receive FM105 config file from NRL Tue 3/22/05 100% Wed 3/23/05545 Validate 1st EM Gasu Wed 3/23/05 100% Fri 3/25/05546 NCR 373 disposition work Thu 3/24/05 100% Fri 3/25/05547 TEM/TPS B Flight Readiness Tue 3/8/05 100% Tue 3/8/05 3/8

2/27 3/20 4/10 5/1 5/22 6/12Feb '05 Mar '05 Apr '05 May '05 Jun '05



I&T Detail Schedule (2 of 4)I&T Detail Schedule (2 of 4)ID Task Name Start % Complete Finish

548 TEM/TPS-B I&T Mon 3/7/05 100% Mon 3/28/05554 Tower-B Test Bay I&T Tue 2/22/05 100% Fri 4/8/05582 Tower-B Grid Bay I&T Fri 4/8/05 95% Wed 4/13/05583 TKR-B installation into grid bay Fri 4/8/05 100% Mon 4/11/05584 NCR 420 demate FMA flex cables facing bay 4 Fri 4/8/05 100% Fri 4/8/05585 FM105 crane operation into single bay Fri 4/8/05 100% Fri 4/8/05586 TKR-B Crane Operation into grid bay 4 Fri 4/8/05 100% Fri 4/8/05587 TKR-B Flexure Fastening Fri 4/8/05 100% Mon 4/11/05588 TKR-B Flex Cable Bending/Bonding Mon 4/11/05 100% Mon 4/11/05589 FM105 installation into grid bay Fri 4/8/05 100% Mon 4/11/05590 FM105 crane operation into grid bay 4 Fri 4/8/05 100% Fri 4/8/05591 TKR-B Flex Cable Flight Mate to TEM/TPS-B Mon 4/11/05 100% Mon 4/11/05592 Tower-B Grid Bay Test Mon 4/11/05 83% Wed 4/13/05593 Re-mate TKR FMA flex cables Mon 4/11/05 100% Mon 4/11/05594 Tower A aliveness test & TKR LPT Wed 4/13/05 0% Wed 4/13/05595 Bays 0,4 optical survey Mon 4/11/05 100% Tue 4/12/05596 Tower-B post-integration Aliveness Test Wed 4/13/05 0% Wed 4/13/05597 Tower-B post-integration Single Bay CPT Wed 4/13/05 0% Wed 4/13/05598 Two Tower Test Tue 3/22/05 39% Thu 4/28/05599 Acceptance test EM PDU Wed 4/6/05 100% Wed 4/6/05600 Build 2 Tower Test Cables Wed 4/6/05 100% Thu 4/7/05601 Two Tower Test Power Supply Ready Wed 4/6/05 50% Tue 4/12/05602 16 port GASU with updated firmware ready Mon 4/4/05 100% Mon 4/4/05603 Validate Two Tower Test Procedure Mon 4/11/05 0% Thu 4/14/05

4/6

4/4




I&T Detail Schedule (3 of 4)I&T Detail Schedule (3 of 4)ID Task Name Start % Compl ete Finish

604 Receive EGSE bracket prints Tue 3/22/05 100% Wed 3/23/05605 Build EGSE Brackets & shelves Thu 3/24/05 100% Tue 4/12/05606 Install eLog Tue 4/5/05 100% Tue 4/5/05607 EGSE test/training in DAQ lab Fri 4/8/05 50% Tue 4/12/05608 Update Muon telescope procedure Tue 4/12/05 0% Tue 4/12/05609 Receive muon telelscope parts Tue 4/12/05 0% Wed 4/13/05610 validate muon telelscope in grid Wed 4/13/05 0% Thu 4/14/05611 install EGSE into Grid Tue 4/12/05 0% Tue 4/12/05612 Install Latte 4.8 Fri 4/8/05 70% Tue 4/12/05613 Install facility grounding bars Fri 4/8/05 50% Tue 4/12/05614 Test EGSE in Grid Thu 4/14/05 0% Fri 4/15/05615 Two Tower Test Pre-test review Tue 4/12/05 0% Tue 4/12/05616 Two Tower Test EGSE Ready Fri 4/15/05 0% Fri 4/15/05617 Two Tower CPT Mon 4/18/05 0% Wed 4/20/05618 userAppBrowser released properly by ELX Mon 4/18/05 0% Mon 4/18/05619 userAppBrowser in INT Tag Mon 4/18/05 0% Mon 4/18/05620 userApp execution Mon 4/18/05 0% Mon 4/18/05621 Aliveness Mon 4/18/05 0% Mon 4/18/05622 FMA CPT Mon 4/18/05 0% Mon 4/18/05623 FMB CPT Mon 4/18/05 0% Mon 4/18/05624 TE702, TE703, TE704 for A and B Mon 4/18/05 0% Wed 4/20/05625 FM104 CPT Wed 4/20/05 0% Wed 4/20/05626 FM105 CPT Wed 4/20/05 0% Wed 4/20/05

4/15

4/18




ID Task Name Start % Compl ete Finish

627 Two Tower Trigger tests Wed 4/20/05 0% Thu 4/21/05628 TREQ alignment STR Wed 4/20/05 0% Wed 4/20/05629 TACK optimization STR Wed 4/20/05 0% Wed 4/20/05630 trigger eff Wed 4/20/05 0% Thu 4/21/05631 trigger eff for wide angle Thu 4/21/05 0% Thu 4/21/05632 Two Tower Calibration Thu 4/21/05 0% Fri 4/22/05633 FM104 calibDAC, MuTrig, calibGen Thu 4/21/05 0% Thu 4/21/05634 FM105 calibDAC, MuTrig, calibGen Thu 4/21/05 0% Fri 4/22/05635 TE601/602/604 for FMA Fri 4/22/05 0% Fri 4/22/05636 TE601/602/604 for FMb Fri 4/22/05 0% Fri 4/22/05637 CSPT (STR) Fri 4/22/05 0% Fri 4/22/05638 E2E Data Collection Fri 4/22/05 0% Thu 4/28/05639 E2E basic cosmics Fri 4/22/05 0% Mon 4/25/05640 E2E S/C Power Margin Mon 4/25/05 0% Mon 4/25/05641 E2E External pulser Mon 4/25/05 0% Tue 4/26/05642 SVAC data collection Tue 4/26/05 0% Wed 4/27/05643 Two Tower Post Test Review Thu 4/28/05 0% Thu 4/28/05644 Tower 1 Mon 12/6/04 24% Tue 5/10/05645 FM101 Post ship test and receiving test Mon 12/6/04 100% Fri 1/14/05653 Tracker 2 post ship test & receiving test Mon 4/4/05 25% Fri 4/29/05654 TKR-2 Post-Ship Test Mon 4/4/05 25% Fri 4/29/05666 TEM/TPS 1 Flight Readiness w/rework Fri 4/22/05 0% Fri 4/22/05 4/22


I&T Detail Schedule (4 of 4)I&T Detail Schedule (4 of 4)



I&T 9 Month Look Ahead (1 of 3)I&T 9 Month Look Ahead (1 of 3)

ID Task Name Duration Start Finish

1 LAT Integration Plan 429.31 days 3/19/04 1/11/06

2 Grid RFI 0 days 10/22/04 10/22/04

3 X-LAT Thermal Plate RFI 0 days 6/1/05 6/1/05

4 Radiators RFI 0 days 5/31/05 5/31/05

5 Tracker Receiving 147.81 days 2/4/05 9/16/05

86 Calorimeter Receiving 133.31 days 12/8/04 6/29/05

177 Electronics Receiving 349.81 days 3/19/04 9/2/05

178 Cables 81.63 days 2/10/05 6/14/05

197 TEM Assemblies 107.38 days 2/18/05 8/1/05

216 TEM PS Assemblies 107.38 days 2/18/05 8/1/05

235 Electronic Boxes 349.81 days 3/19/04 9/2/05

243 ACD Receiving 0 days 6/9/05 6/9/05

245 Grid Assemby in I&T 76.19 days 11/1/04 2/25/05

246 Grid Assembly 55.19 days 11/1/04 1/25/05

266 Grid Box Base Assy Inspection and Fitcheck 21 days 1/25/05 2/25/05

276 TEM to Calorimeter 116.88 days 2/7/05 8/2/05

277 Calorimeter A 9 days 2/7/05 2/21/05

280 Calorimeter B 6.63 days 2/25/05 3/8/05

283 Calorimeter 1 16.44 days 3/30/05 4/22/05















328 Calorimeter 16 1 day 8/1/05 8/2/05

10/22

6/1

5/31

6/9

30 6 13 20 27 6 13 20 27 3 10 17 24 1 8 15 22 29 5 12 19 26 3 10 17 24 31 7 14 21 28 4 11 18 25 2Jan '05 Feb '05 Mar '05 Apr '05 May '05 Jun '05 Jul '05 Aug '05 Sep '05 Oct '05





331 Calorimeter/Tracker/TEM/TEM-PS Test 132.88 days 2/21/05 9/9/05

332 Tower A 26 days 2/21/05 3/30/05

335 Tower B 2 days 3/30/05 4/1/05

338 Tower 1 1 day 4/22/05 4/25/05

341 Tower 2 1 day 4/29/05 5/2/05

344 Tower 3 1 day 5/6/05 5/9/05

347 Tower 4 1 day 5/19/05 5/20/05

350 Tower 5 1 day 6/8/05 6/9/05

353 Tower 6 1 day 6/21/05 6/22/05

356 Tower 7 1 day 7/1/05 7/5/05

359 Tower 8 1 day 7/12/05 7/13/05

362 Tower 9 1 day 7/21/05 7/22/05

365 Tower 10 1 day 8/1/05 8/2/05

368 Tower 11 1 day 8/10/05 8/11/05

371 Tower 12 1 day 8/19/05 8/22/05

374 Tower 13 1 day 8/30/05 8/31/05

377 Tower 14 1 day 9/8/05 9/9/05

380 Tower Installation 108.88 days 4/1/05 9/15/05

381 Install Tower A 3 days 4/5/05 4/8/05

385 Install Tower B 3 days 4/1/05 4/6/05

389 2 Tow er CPT 10 days 4/8/05 4/25/05

390 Install Tower 1 2.5 days 4/25/05 4/28/05


404 4 Tow er CPT 4 days 5/5/05 5/11/05





433 8 Tow er CPT 5 days 6/27/05 7/5/05




455 Install Tower 10 3 days 8/2/05 8/5/05

462 Install Tower 11 3 days 8/11/05 8/16/05




0%

0%

0%

30 6 13 20 27 6 13 20 27 3 10 17 24 1 8 15 22 29 5 12 19 26 3 10 17 24 31 7 14 21 28 4 11 18 25 2Jan '05 Feb '05 Mar '05 Apr '05 May '05 Jun '05 Jul '05 Aug '05 Sep '05 Oct '05





491 Install Electronics and Cables 6 days 9/15/05 9/23/05

496 16 Tow er CPT 5 days 9/23/05 9/30/05

497 ACD 8 days 9/30/05 10/13/05

501 LAT Level System Test 45 days 10/13/05 12/22/05

507 Pack & Ship 3 days 12/22/05 1/4/06

508 Deliver to NRL 5 days 1/4/06 1/11/06

0%

0%

0%

1 8 15 22 29 5 12 19 26 3 10 17 24 31 7 14 21 28 4 11 18 25 2 9 16 23 30 6 13 20 27 4 11 18 25 1May '05 Jun '05 Jul '05 Aug '05 Sep '05 Oct '05 Nov '05 Dec '05 Jan '06



Issues & ConcernsIssues & Concerns

ISSUES• Availability of flight assembly hardware.

– Shortages identified by I&T and being worked with Subsystems.

• Flight CablesCONCERNS• I&T Procedure Development

– Two tower test procedure (4/15/05 Need date)• Continued support from subsystems for NCR closure.• Hardware delivery planning for Tracker

– New supplier for flex cables is able to increase production how does it impact Tracker delivery

• TPS rework and replacement, availability for future tower installations.

• Need firm delivery dates for ELX boxes • LATTE 5.0 ready Oct. 1 for use in LAT Functional testing due to

start 10/14. E2E tests start 11/1.

GLAST LAT Project Managers F2F 041305 4.1.9 - Integration and Test 1 GLAST Large Area Telescope:...

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