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PACS FPU Opto-mechanical Design Overview and Interfaces

PACS FPU Opto-mechanical Design Overview and Interfaces. J. Schubert MPE. Summary. Overview on FPU- Technical Status Optics FPU Structure FPU- Interface Documentation and Design Status Overview Cryo Mechanics s-Ge:Ga Detector Assemblies Bolometer Unit.

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PACS FPU Opto-mechanical Design Overview and Interfaces

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  1. PACS FPU Opto-mechanical DesignOverview and Interfaces J. Schubert MPE Instrument Interfaces

  2. Summary • Overview on FPU- Technical Status • Optics • FPU Structure • FPU- Interface Documentation and Design Status • Overview • Cryo Mechanics • s-Ge:Ga Detector Assemblies • Bolometer Unit Instrument Interfaces

  3. Overview - FPU Technical Status OPTICS • Design completed (local optimizations only) • Stray light analysis of critical components performed (top optics) • Preliminary alignment plan established • Diffraction analysis continued • Open Point • Telescope interface not frozen Instrument Interfaces

  4. Overview - FPU Technical Status FPU Structures • Detailed design of: • Housing compartments and substructure • Easily accessable subunits (chopper, grating, bolometer…) • Exchange of full compartments possible • Excellent stray light suppression • FPU suspension (iso-static mounting) • Mirrors and mounts /procurement • Distribution boards, cabling configuration /procurement • Interfaces to subunits • Detailed planning of manufacturing phase Instrument Interfaces

  5. Overview - FPU Technical Status FPU Structures (cont.) • Points to be worked on • Structural Analysis FPU • Values for resonance amplification • FPU Mass Budget • Weight to be reduced • Cannon ITT Connectors • Connectors needs to be light tight Instrument Interfaces

  6. Overview: Status FPU Interfaces • All FPU interfaces are defined • Detailed interface requirements are worked out and documented in the Subunit Specifications • Detailed design of the interfaces is in good progress and its status is almost completely documented in the subunit ICDs • Points to be worked on • Final vibration loads for the subunits needed • Documentation status has to be adapted to the current development status Instrument Interfaces

  7. Interfaces Cryo Mechanics Instrument Interfaces

  8. FPU - Cryo Mechanics Interface Status (I) • Filter Wheel • Documents: • PACS-ME-RS-003 • Black Body and Filter Wheel Requ. Spec. • PACS-KT-ID-006 • PACS FPU Filter Wheel ICD Status I/F Design optical cabling elect. control • Temperature Sensors • Documents: • PACS-ME-ID-003 • Temperature Sensors ICD Status I/F Design cabling elect. control Instrument Interfaces

  9. FPU - Cryo Mechanics Interface Status (II) • Calibration Sources • Documents: • PACS-ME-RS-003 • Black Body and Filter Wheel Requ.Spec. • PACS-KT-ID-007 • PACS FPU Calibration Sources ICD Status I/F Design optical cabling elect. control • Grating • Documents: • PACS-ME-RS-009 • PACS Grating Assembly Requ. Spec. • PACS-CL-ID-001 ICD Grating assembly – FPU • PACS-CL-ID-002 • Grating to DEC ICD Status I/F Design optical mechan. cabling elect. control Instrument Interfaces

  10. FPU - Cryo Mechanics Interface Status (III) • Chopper • Documents: • PACS-ME-RS-001 • Chopper Specification • PACS-KT-ID-003 • Chopper Interface Control Document • PACS-MA-ID-001 PACS Chopper Electrical ICD Status I/F Design optical mechan. cabling elect. control • Filters/Dichroics • Documents: • PACS-ME-ID-004 • Filters and Dichroics ICD Status I/F Design optical mechan. Instrument Interfaces

  11. Interfaces s-Ge:Ga Detector Assemblies Instrument Interfaces

  12. s-Ge:Ga Detector Assemblies Interface Status • Documents: • PACS-ME-RS-002 Spec. for the PACS CRE • PACS-NT-DS-004 • PACS Detector Array Design Spec. • PACS-KT-ID-002 • Ge-Detectors ICD(mech) • PACS-MA-ID-002 PACS Ge Detector Electrical ICD Status I/F Design optical CRE Stress Modules mechan. Housing therm. CRE Stress Modules/Housing elect. CRE Instrument Interfaces

  13. Interfaces Bolometer Unit Instrument Interfaces

  14. Bolometer Unit Interface Status • Documents: • PACS-ME-RS-005 PACS Instrument Requirements Document Bolometer Specification Document will be finished after the IIDR • PACS-KT-ID-005 • PACS FPU Bolometer Assembly ICD • Sap-PACS-CCa-25-00 • BOLC/BOLA Subsystem Specification • Sap-PACS-CCa-24-00 • BOLC Electrical Interface Control Document Status I/F Design optical mechan. 4K Housing Filters therm. 2K Cooler/Bolometer elect. Instrument Interfaces

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