High Bay Operations1 GLAST LAT ProjectMarch 2005 LAT Engineering Meeting 14 March March 2005 LAT High Bay Operations Supporting Test Events LAT Engineering Meeting 14 March March 2005 LAT High Bay Operations Supporting Test Events

High Bay Operations2 GLAST LAT ProjectMarch 2005 High Bay Operations to Support LAT Environmental Testing Sine Vibration Test / Modal Survey EMI/EMC Test Acoustic Test Thermal Balance/Thermal Cycle Test Weight/CG Measurement

High Bay Operations3 GLAST LAT ProjectMarch 2005 Building A-59 Area of Operations NRL Vibration Test Facility – approximately 27 ft x 53 ft floor area NRL Acoustic Test Chamber – approximately 17 ft x 21 ft test area EMI/EMC Test Chamber – approximately 19 ft x 19 ft test area LAT Area – approximately 40 ft x 60 ft floor area for assembly operations and storage LAT Clean Tent – approximately 15 ft x 16 ft floor area for assembly and functional test operations with additional “non-clean” area for EGSE LAT Clean Room – approximately 21 ft x 33 ft floor area T-Slotted Floor Area – approximately 25 ft x 25 ft available floor area to support mass properties measurement

High Bay Operations4 GLAST LAT ProjectMarch 2005 General Test / Activity Prerequisites Training and certification requirements –Crane operations –Contamination requirements –ESD Hazards Structural Oversight –Proof test of LAT MGSE –MGSE safety review Calibration –LAT EGSE system calibration –NRL data acquisition system calibration QA support and oversight Safety reviews and oversight

High Bay Operations5 GLAST LAT ProjectMarch 2005 Sine Vibration Test with Modal Survey Option Location – Building A-59 –NRL Vibration Test Facility GSE Requirements –Overhead Crane (capacity 10,000 lbs) –Unholtz-Dickie Shaker, Team Slip Table and Expander Head/Load Support Frame (NRL) –LAT Dust Tent (SLAC) –LAT Lift Fixture (SLAC) –LAT Grid Perimeter Ring (SLAC) –LAT Transport Cart (SLAC) –LAT Test Interface Plate (SLAC) –Personnel Platforms (NRL and SLAC) –GN2 source (NRL) –Facility Ground (NRL) Mechanical Configuration –LAT Instrument with Radiator Mass Simulators –LAT Instrument will be oriented with the Z-Axis vertical (+Z up) throughout this test Electrical Configuration –EGSE required for Limited Performance Testing and is stationed next to vibration table –EGSE disconnected during vibration testing

High Bay Operations6 GLAST LAT ProjectMarch 2005 Sine Vibration Test with Modal Survey Option - continued Test Facility – Layout

High Bay Operations7 GLAST LAT ProjectMarch 2005 Sine Vibration Test with Modal Survey - continued

High Bay Operations8 GLAST LAT ProjectMarch 2005 Sine Vibration Test with Modal Survey Option - continued Potential Obstacles –LAT Instrument must be lifted over the Ling B335/Kimball vibration table to access test area. Facility-Specific Issues –LAT Instrument must be protected from dust and particles during test –LAT Transport Cart, Lift Fixture and Grid Perimeter Ring can be stored at the entrance of the NRL Vibration Test Facility –Expander-Head and Load Support Frame must be stored adjacent to shaker for lateral vibration test activities –Before tear-down of fixtures used for the axial vibration test activities, the LAT Instrument must be temporarily stored on the slip table of the adjacent vibration table (Ling B335/Kimball) or on the LAT support stand. Issues –Need to fit-check LAT Test Interface Plate with slip table and expander head

High Bay Operations9 GLAST LAT ProjectMarch 2005 EMI/EMC Test Location – Building A-59 –EMI/EMC Test Chamber GSE Requirements –LAT Dust Tent (SLAC) –LAT Grid Perimeter Ring (SLAC) –LAT Transport Cart (SLAC) –LAT Test Interface Plate (SLAC) –GN2 source (NRL) –Personnel Platforms (NRL and SLAC) Mechanical Configuration –LAT Instrument with Radiators –LAT Instrument will be oriented with the Z-Axis horizontal (+X up) throughout this test Electrical Configuration –EGSE required for Comprehensive and Limited Performance Testing –EGSE is stationed inside EMI test control room

High Bay Operations10 GLAST LAT ProjectMarch 2005 EMI/EMC Test - continued Test Facility – Layout

High Bay Operations11 GLAST LAT ProjectMarch 2005 EMI/EMC Test - continued Potential Obstacles –½ inch lip at entrance to EMI/EMC test chamber door Facility-Specific Issues –LAT Instrument must be protected from dust and particles during test Issues –Need to decide how to overcome height of lip at the entrance to the EMI/EMC test area (ramp or offset wheels) and verify method with pathfinder activity –Need to verify the load capacity of the bridge spanning the tracks between the LAT Area and the EMI/EMC Test Chamber

High Bay Operations12 GLAST LAT ProjectMarch 2005 Acoustic Test Location – Building A-59 –Acoustic Test Chamber GSE Requirements –LAT Dust Tent (SLAC) –LAT Grid Perimeter Ring (SLAC) –LAT Transport Cart (SLAC) –LAT Test Interface Plate (SLAC) –GN2 source (NRL) –Personnel Platforms (NRL and SLAC) Mechanical Configuration –LAT Instrument with Radiators –LAT Instrument will be oriented with the Z-Axis vertical (+Z up) throughout this test Electrical Configuration –EGSE required for Limited Performance Testing –EGSE is stationed outside of Acoustic Chamber

High Bay Operations13 GLAST LAT ProjectMarch 2005 Acoustic Test - continued Acoustic Test - continued Test Facility – Layout

High Bay Operations14 GLAST LAT ProjectMarch 2005 Acoustic Test - continued Potential Obstacles –¼ inch lip seal on floor at entrance to Acoustic Chamber door Facility-Specific Issues –LAT Instrument must be protected from dust and particles during test Issues –Need to decide how to overcome height of lip at the entrance to the Acoustic Chamber (ramp or offset wheels) and verify method with pathfinder activity

High Bay Operations15 GLAST LAT ProjectMarch 2005 Thermal Testing Location – Building A-59 –Thermal-Vacuum Chamber (Big Blue) –LAT Area –LAT Clean Tent GSE Requirements –TVAC Test Fixture and Cold Plates (SLAC) –TVAC Platform (NRL) –TVAC Trolley (NRL) –LAT Spacer/Test Stand for rotation (SLAC) –Personnel Platforms (NRL and SLAC) Mechanical Configuration –LAT Instrument with Radiators –LAT Instrument will be oriented with the Z-Axis horizontal (+X up) throughout this test –Radiators must be leveled to 0.1 degrees from horizontal or better Electrical Configuration –EGSE required for Comprehensive / Limited Performance Testing and Muon Testing –EGSE is stationed on the East-side of the Thermal-Vacuum Chamber

High Bay Operations16 GLAST LAT ProjectMarch 2005 Thermal Testing - continued Test Facility – Layout

High Bay Operations17 GLAST LAT ProjectMarch 2005 Thermal Testing - continued

High Bay Operations18 GLAST LAT ProjectMarch 2005 Thermal Testing - continued Potential Obstacles –Overhead I-beam in front of thermal-vacuum chamber Facility-Specific Issues –Both trolleys of the Overhead Crane (20,000 lb) will be used to support rotation of the LAT Instrument in conjunction with the LAT Spacer/Test Stand –Final TVAC configuration activities for the LAT Instrument will take place on its TVAC test platform/trolley assembly inside the LAT Clean Tent and the LAT Area. –Overhead Crane (20,000 lb) will be used to assemble test article Issues –Need to develop rotation procedure by running pathfinder activities with the LAT Spacer/Test Stand and a mass simulator of the LAT Instrument in conjunction with the NRL crane

High Bay Operations19 GLAST LAT ProjectMarch 2005 Weight and CG Measurement Location – Building A-59 –T-Slotted Floor Area GSE Requirements –Overhead Crane (capacity 20,000 lbs) –Load Cells for Weight and CG measurement –Moments of Inertia Table and Spin Table is an available NRL option for CG measurement –LAT Lift Fixture (SLAC) –LAT Grid Perimeter Ring (SLAC) –LAT Test Interface Plate (SLAC) –LAT Transport Cart (SLAC) –LAT Spacer/Test Stand for rotation (SLAC) –Personnel Platforms (NRL and SLAC) Mechanical Configuration –LAT Instrument without Radiators –Two configurations: +X and +Z facing upward Electrical Configuration –EGSE is not required for this activity

High Bay Operations20 GLAST LAT ProjectMarch 2005 Weight and CG Measurement - continued Potential Obstacles –None Facility-Specific Issues –Overhead Crane (20,000 lb) will be used to support the LAT Instrument during measurement. –Both trolleys of the Overhead Crane (20,000 lb) will be used to support rotation of the LAT Instrument Issues –Need to develop rotation procedure by running pathfinder activities with the LAT Spacer/Test Stand and a mass simulator of the LAT Instrument in conjunction with the NRL crane –Need to decide CG measurement method. Depending upon method, need to design fixture to interface with the Moments of Inertia Table or Spin Table