Lat status environmental testing
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Gamma-ray Large Area Space Telescope. LAT Status Environmental Testing. GLAST Large Area Telescope: W Neil Johnson Naval Research Lab [email protected] (202) 767 - 6817. LAT Status. LAT completed commissioning at SLAC May 10th. Determined effort by the Commissioner: Eric Grove

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LAT Status Environmental Testing

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Lat status environmental testing

Gamma-ray Large Area Space Telescope

LAT StatusEnvironmental Testing

GLAST Large Area Telescope:

W Neil Johnson

Naval Research Lab

[email protected]

(202) 767 - 6817

Lat status

LAT Status

  • LAT completed commissioning at SLAC May 10th.

    • Determined effort by the Commissioner: Eric Grove

    • Excellent support leadership from

      • System Engineering: Pat Hascall

      • Electronics/ FSW: Gunther Haller

      • I&T OnLine: Ric Claus

      • OffLine: Anders Borgland

  • Packed up on May 11th and departed by dedicated truck (photos to follow)

  • Arrived NRL on Sunday, May 14th and installed in clean tent. MGSE and EGSE arrived on Tuesday, May 16th.

  • Up and running by Wednesday, completed post ship comprehensive performance test on Friday.

  • Continued calibrations and additional tests thru the weekend.

  • Installed new flight software and completed regression tests by Wednesday

  • Successfully completed Pre Environmental Review with GSFC on Thursday.

  • Moved to Vibration Test Lab on Friday. Vibe testing began yesterday.



ACD before installation of Micrometeoroid Shield

1 of 16 Calorimeter modules

1 of 16 Tracker modules

Lat before installing the acd

LAT before installing the ACD

Lat with acd and protective cover

LAT with ACD and protective cover

Data acquisition system z

Data Acquisition System (-Z)















Z with the cross lat plate installed

-Z with the Cross LAT plate installed

Lat on shipping container base

LAT on Shipping Container Base

Closing up the shipping container

Closing up the shipping container

Loading lat on the icebreaker

Loading LAT on the “IceBreaker”

The icebreaker

The IceBreaker

Arrival at nrl s naval center for space technology

Arrival at NRL’s Naval Center for Space Technology

Moving to vibe lab

Moving to Vibe Lab

Lift on to vibe table

Lift on to Vibe Table

On vibe table for z axis test

On Vibe Table for Z-axis Test

Lat test flow

LAT Test Flow

System Commissioning/ System Test



5 days


You Are Here

Install Radiators

Offload &

Set-up LAT

Sine Vibe


Acoustic Test


5 days

5 days

9 days

11 days

7 days

2 days

PER 5/25/06




T- Bal

T- Cycle

Pre TV


Pack and Ship

Weight & CG

3 days

2 days

2 days

2 days


8 days

40 days

PSR 9/13/06

NOTE: Durations for moving and setup have been incorporated into the total duration for the test.



  • The LAT is complete and tested.

    • No significant anomalies detected to date, except

      • Radiator heaters were damaged during assembly process and are now being replaced

    • No performance anomalies detected. Trending shows same instrument throughout assembly and test program.

  • The LAT Flight Software is essentially complete.

    • Missing GRB detection algorithm and event filter additions

      • Neither particularly relevant for ground testing.

      • Development will continue on the test bed at SLAC.

  • New OnLine operating system – LICOS – commissioned

  • The LAT project has successfully transferred activities (and people) to NRL and is efficiently executing its environmental test program.

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