GLAST LAT ProjectFace to Face Managers Meeting 04/14/04 4.1.9 - Integration and Test 1 GLAST Large...

GLAST LAT Project Face to Face Managers Meeting 04/14/04

4.1.9 - Integration and Test 1

GLAST Large Area Telescope: GLAST Large Area Telescope: I & T Input to Face to Face Managers

Meeting, April 14th, 2004

Elliott BloomSU-SLAC

Subsystem Manager

[email protected]

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



IFCT Role in Functional Tests (Larry W.)IFCT Role in Functional Tests (Larry W.)

• IFCT is responsible for helping to design/define and implement I&T functional tests on the subsystem and LAT level (see Pat’s presentation) with major input to LAT-MD-02730.

• The test scripts used in the functional testing will actually be implemented by the I&T online department with guidance from LAT-MD-02730 and IFCT. The test scripts will be placed under configuration control by I&T online.

• The test procedures will be owned and configuration controlled by IFCT.

• All I&T testing of flight hardware will be performed by IFCT department electrical technicians and engineers who have been trained in their use.

• IFCT will need major assistance from the subsystems in helping to interpret the results of the tests (pass/fail with report). Particularly, in the case of fail (see SVAC role slide 4).



• ACD– 2,200 hours for checkout/testing/support. (1 man year)

• Calorimeter– 1.5 FTE's (not continuously?) and travel expenses for

Calorimeter I&T Support.• DAQ

– 700 hours for hardware I&T support. (4 man months)• Flight Software

– 1,800 hours for software I&T support. (10 man months)• Mechanical

– ??• SAS

– ??• Tracker

– 2 FTEs (Subsystem scientists) (3 man years)– Hiro Tajima, Johann Cohen-Tanugi (SLAC) (3 man years)

Subsystem Support of I&T after DeliverySubsystem Support of I&T after DeliveryFrom 7/04 – 1/06 ?



SVAC LAT Build Data Analysis Role (Eduardo)SVAC LAT Build Data Analysis Role (Eduardo)

• There are two SVAC data analysis efforts that support the LAT build and test and both use the same test data – Analysis of “Pass/Fail” test data of the flight hardware relative

to an established baseline (See previous manpower chart slide 3).

– Determine hardware baseline and calibrations

– Results due with hours or, at most, a day (TBR)

– I&T, SAS and Subsystems effort, e.g., CPT test offline.

– Analyses of data from the flight instrument in various stages of completion, which assume a well understood baseline and calibrations (LAT wide collaboration effort).

– Uncover subtle hardware problems

– Apply SAS reconstruction algorithms to real data

– Results due in 2 to 3 weeks after data taking (TBR).



I&T/SVAC Department Meetings (Eduardo)I&T/SVAC Department Meetings (Eduardo)• Date : Weekly (Friday)• Location : SLAC , Group C conference Room, B84• Goal : Prepare for data analysis of pass and fail tests and instrument data analysis.

(Working meeting, those interested in contributing are welcome.)

– PASS/FAIL tests– Review plots from subsystems to evaluate if changes are necessary for tests

at the integrated level. – Scheduled a meeting on April 30 between I&T (SVAC and Online), SAS and

ISOC to discuss monitoring of parameters during integrated tests and details of implementation and present SVAC tool to monitor offline calibrations.

– SAS recon analysis may not be required at this level but we may use SAS code for digitized data (TBR)

– I&T driven effort

– Instrument test Analysis – LAT Collaboration effort. See next slides

– Infrastructure necessary – SAS Data pipeline (OPUS) , MC and GlastRealease– Data analysis code to estimate run time needed during data taking– Offline Report generation – We were given no requirements so far– Tool to compare offline results - We were given no requirements so far.



SVAC Instrument Analysis Workshop 1SVAC Instrument Analysis Workshop 1

• Date : June 7 (Monday) and 8 (Tuesday), 2004

• Location : SLAC , June 7 (ROB C&D) , June 8 (TBD)

• Goal : Prepare for data analysis during LAT build and testing.

– Produce MC datasets with two-towers in a grid at different configurations to

– Validate geometry implementation

– Create datasets for data analysis

– Recommend data set sizes based on MC studies

– Define and assign tasks to participants to

– Evaluate if there are modifications necessary to the reconstruction

– Evaluate if there are modifications necessary to the analysis (merit) ntuple

– Create reference plots for different configurations

– Define infrastructure necessary for

– Data pipeline (OPUS)

– Report generation

– Comparison of results



Instrument Analysis Workshop 2Instrument Analysis Workshop 2

• Date : Early July 2004 (TBD, depends on IRR) • Location : SLAC • Goal : Evaluate MC results and implement changes needed for

data analysis of LAT data obtained during various stages of the build and testing.

– Evaluate results and regenerate MC datasets if necessary– Suggest modifications for data analysis tests with real data and flight

hardware– Work with I&T to evaluate if the data set sizing is

– adequate to understand the instrument – and if collection times fit the LAT build and test schedule.

– Define what analyses will be done during the build sequence. – The plan is to have data taking with 1,2,4,6,8,10,12,14,16 towers and 16

towers with ACD.

– Define infrastructure needed for full LAT analysis



Interdependencies: subsystems, LAT office and/or project office.

• Completion of LAT-MD-02730 “LAT Performance and Operations Test Plan”

• Input on specific processes/procedures for integration (subsystems).

• EGSE deliveries from Electronics (see following chart).

• Tracker Mechanical mock-up and 5 tray mini-tracker tower parts from Tracker.



I&T Overview to Start of IntegrationI&T Overview to Start of Integration

Training & Procedure Verification

6/18/04

Integration Procedures

Mechanical and Electrical6/18/04

Integration Readiness

Review7/8/04

I&T Mockup4/1/04

LATTE v.3.04/1/04

I&T PlanLAT-MD-01376

5/1/04

I&T Functional Test Scripts

6/1/04

MGSE Development

Plan v.25/15/04

Drawings5/1/04

Fabrication6/14/04

Proof Testing7/21/04

Receive Flight

Hardware Start

Integration

* Final though two tower CPT, releases to support integration procedure development

LATTE v.3.n V &V5/8/04 – 7/8/04

Bldg 33 Cert6/18/04

Particle Test Equipment

6/18/04

Training & Script Verification

6/1/04 – 7/1//04

Survey Plan5/1/04 draft (done)

5/31/04 final

RequirementsLAT-MD-02730

6/10/04 *

Electronics Test-Bed

5/04

Subsystem Scripts5/1/04

EGSE Hwr Deliveries

6/1/04


5/04



Electrical Ground Support Equipment (EGSE) / Online FlowElectrical Ground Support Equipment (EGSE) / Online Flow


Review7/8/04

LATTE v.3.0 with GASU

support4/1/04

I&T Functional Test Scripts

6/1/04

Training6/18/04

Peer Review6/18/04

LATTE v.3.n V &V5/8/04 – 7/8/04

Event Pre-scaling5/8/04

Security – Configuration

Control 5/8/04

LATTE v.3.n release5/8/04

Script / Software Configuration

Control7/8/04

Electronic Logbook / Mate-

Demate Log6/1/04


5/04

Subsystem Scripts5/1/04

EGSE Hwr Deliveries

(Electronics)6/1/04

Power Up Sequence

5/8/04

Hardware Monitoring

5/8/04



Science Verification, Analysis, and Calibration (SVAC) - RoadmapScience Verification, Analysis, and Calibration (SVAC) - Roadmap


Review7/8/04

SVAC Database and Calibration trending(March - July)

SVAC Acceptance and Test of SAS Algorithms (May - July)

1 & 2 Tower Geometry

(April – May)

SAS Calibration Algorithms(May)

SAS Database(May)

SAS Pipeline Infrastructure(March - April)

MC Datasets 1 & 2 tower

(May)SAS Geometry Review(April)

SVAC Data Pipeline(May-June)

EM 1 data analysis(March - May)

EM 2 data analysis(April - June)

SVAC Workshops(June-July)

Instrument Test Analysis(March – July)



Critical issues I want discussedCritical issues I want discussed

• Finalization of LAT test requirements• EGSE definition document needs to be completed.• EGSE delivery plan. Is current schedule still OK?• Time table for finalization of TKR-Grid interface and installation

sequence.• Tracker support for I&T mechanical model( delivery dates) .

– Flight cable design– Spare trays– 5th live tray

GLAST LAT ProjectFace to Face Managers Meeting 04/14/04 4.1.9 - Integration and Test 1 GLAST Large...

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