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FPU Structure, Baffle and Straylight. R. Graue, D. Kampf Kayser-Threde. Field Mirror for Spectrometer. Collimator housing. Photometer housing. Alignment Cube. Blue Spectrometer Connector Panel. Top Optics housing. 4 K Thermal Strap. Entrance to FPU. Bolometer housing. 2 K

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fpu structure baffle and straylight

FPU Structure, Baffle and Straylight

R. Graue, D. Kampf

Kayser-Threde

PACS FPU

primary structure

Field Mirror for

Spectrometer

Collimator housing

Photometer housing

Alignment Cube

Blue Spectrometer

Connector Panel

Top Optics housing

4 K Thermal Strap

Entrance to

FPU

Bolometer

housing

2 K

Feed Thru

FPU foot

2 axis

Red Spectrometer

Connector Panel

Spectrometer housing

FPU foot

1 axis

Primary Structure

Chopper Cover

PACS FPU

fpu stm
FPU STM

PACS FPU

straylight analyses top optic model
Straylight Analyses – Top Optic Model
  • ASAP Model of Top Optics
  • Derived from optical ZEMAX Model
  • Black Coated Walls (>0.4 mm)

PACS FPU

straylight analyses results and status
Straylight Analyses – Results and Status
  • High straylight suppression
  • Neglible straylight impacts in consequent boxes
  • Inputs considered for Baffle Design
  • Straylight suppression 1e-10 to focal plane
  • Modell delivered to ASTRIUM

PACS FPU

2k feed through
2K - Feed Through
  • Cryo STM Vibration Tested
  • Manufactured and Delivered

Outside sleeve

Cold finger

D/E: Retainer ring 1/2

F: Muff

G: Ring

PACS FPU

fpu suspension design status and material
FPU Suspension Design Status and Material
  • Status:
    • Design: completed
    • Documentation: Completed
  • Material
    • Fibre: T300
    • Resin: Ciba Geigy
      • Araldit LY-3505
      • Hardener XP 3403

PACS FPU

fpu suspension cryo qualification test matrix
FPU Suspension Cryo Qualification Test Matrix
  • Status
  • Static load tests: completed
  • (Cold) material characterisation: completed
  • Cryovibration tests: complete (CRYO STM FPU)

PACS FPU

mgse and cvse status
MGSE and CVSE Status
  • MGSE design, procurement and functional test completed
    • Vibration test adapter
    • Lifting device
    • Integration Tools
    • FW Test Box
  • CVSE design, procurement (cryostat) and functional test completed

KT Cryostat Test Faciliy for Stability Tests

PACS FPU

mass budget
Mass Budget

*IR Black Paint, Internal Harness, Screws

Contingency not needed

PACS FPU

pacs thermal model
PACS Thermal Model

PACS-Thermal Model (Input-Status: May 2003)

- PACS thermal model used as submodel of the H-EPLM reduced thermal model

- PACS submodel consists of 154 thermal nodes

PACS-TMM includes:

- All mechanisms, all harness, radiative environment

- Possibility of transient analysis (cool-down and operational time-line)

PACS FPU

thermal analyses status completed tasks
Thermal Analyses - Status - Completed Tasks
  • Thermal Analyses
    • Quasisteady state and transient thermal analyses
    • Calibration of thermal model (cooling down curves) after Cryo STM tests
    • Analyses of thermal links (2 K) wrt conductivity
  • Documentation released

PACS FPU

pacs thermal analyses open tasks
PACS Thermal Analyses - Open Tasks
  • - Update of the cryostat-TMM (Sept. 2003) not yet included
  • - Dissipation values of the grating and the calibration sources are no measured values
  • Impact of Electrical insulation between spectrometers and cooling-straps not yet defined
  • - Results of the discussion of the cooling-strap-IFs not yet included
  • - Contact resistances at the cooling-strap-I/Fs only assumed, but not measured

PACS FPU

structural analyses status completed tasks see h o wrt stm warm cold vibration
Structural Analyses - Status - Completed Tasks(see H/O wrt. STM warm/cold vibration)
  • Structural Analyses
    • Evaluation of ambient and cold vibration tests
    • FEM calibration
    • Load analyses with calibrated model (cryo-vibration test)
    • Strength analyses for FPU metallic and CFRP components
    • Cryogenic material properties analyses
    • CoG, MoI analyses
    • Displacement, distortion, deformation analyses
  • Documentation released

PACS FPU

fpu structure status external interfaces
FPU Structure Status – External Interfaces
  • Design envelope frozen
  • Optical beam stay out frozen
  • OB envelope frozen

 DCNs of Assembly and IF Drawing version 27 to be approved

PACS FPU

documents status
Documents Status
  • ICDs
    • Chopper, FW, Calibration Source, Filters/

Dichroics, Ga:Ga Detector, Grating: approved

    • Bolometer, Distribution Boards: approved
    • Cryogenic harness and connectors: approved
  • Procurement specifications (structures,

mirror, coating, screws/helicoils, Si -lens,

emitter for CS , etc.) approved

  • AIV and functional/environmental test plan: updated
  • Filled in verification matrix: latest status (10.2003)

PACS FPU

pa activities kt
PA Activities (KT)
  • Approved Documents
    • PMP (Update)
    • CIDL (Update)
    • CIL (Issue1)
    • PA Plan (Update)
    • MIP/KIP plan (Update)
    • Inputs to FMECA (Update)
  • Approved procurement/manufacturing documentation/drawings
  • Configuration Control

PACS FPU

mip kip list
MIP / KIP List
  • Inspection
    • FW assembly (CQM/PFM) after functional and environmental testing
    • Calibration source (CQM/PFM) after environmental and functional testing
    • Coated mirrors (CQM/PFM)
    • FPU after vibration tests (CQM/PFM)
    • Distribution boards and harness after manufacturing and functional testing (CQM/PFM)
  • Fit check inspection after manufacturing and coating of aluminium structure (STM/CQM/PFM)
  • Functional performance verification after FPU alignment (CQM/PFM)

PACS FPU

maiv status of structural items completed tasks
MAIV Status of Structural Items -Completed Tasks
  • CQM
    • Mechanical items design and manufacturing drawings completed and released
    • STM/ CQM metallic items manufactured and IR black coated
    • Mechanical Fit check/Preintegration of all mechanical items (on boxes and FPU level)
    • STM/ CQM CFRP items manufactured and static load tested
    • Cooling straps manufactured
  • PFM
    • Structural items design and manufacturing drawings completed and released
    • CFRP items manufactured and static load tested

PACS FPU

maiv status of structural items opentasks
MAIV Status of Structural Items - OpenTasks
  • CQM
    • Thermal Contact Soldering and Ge:Ga detector attachment (sapphire embedding) of CQM cooling straps in progress (until end of Nov. 2003)
    • Development of Ge:Ga Detector electrical isolation (thick layer coating) under progress (until end of Nov. 2003)
  • PFM
    • Substructures and metallic components manufacturing in progress until April 2004
    • Preassembly/fit check until June 2004
    • Finish and black Coating until July 2004

PACS FPU

fpfpu cryo vibration qualification breakdown
FPFPU Cryo Vibration Qualification Breakdown

See dedicated chapters

PACS FPU

pacs fpu verification
PACS FPU Verification

Similarity

  • CQM and STM were manufactured parallel with the same drawingsout of the same lot

Qualification Tests

  • STM vibration tests

Tests completed

Conclusion:

FPFPU Housing is structurally qualified

PACS FPU

cqm schedule
CQM SCHEDULE
  • Manufacturing
    • CQM primary/secondary structures thermal treatment /manufacturing /IR coating sequentially completed
    • CQMoptical components delivered
    • CQM CFRP struts and 2 K feed through material test program and manufacturing completed
  • AIV (Final assembly and alignment)
    • CQM from 7/03 to 1/04 (tbc)

PACS FPU

pfm schedule
PFM SCHEDULE
  • Manufacturing
    • PFM primary/secondary structures thermal treatment /manufacturing /IR coating to be completed until 6.2004
    • PFM optical components delivered
    • PFM CFRP struts and 2 K feed through material test program and manufacturing completed
  • AIV (Final assembly and alignment)
    • PFM from 7/04 to 11/04

PACS FPU

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