1. PACS IIDR 01/02 Mar 2001 Instrument Interfaces1 PACS FPU Opto-mechanical Design Overview and Interfaces J. Schubert MPE

2. PACS IIDR 01/02 Mar 2001 Instrument Interfaces2 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

3. PACS IIDR 01/02 Mar 2001 Instrument Interfaces3 Overview - FPU Technical Status OPTICS Design completed (local optimizations only) Stray light analysis of critical components performed (top optics) Preliminary alignment plan established Open Point  Telescope interface not frozen Diffraction analysis continued

4. PACS IIDR 01/02 Mar 2001 Instrument Interfaces4 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

5. PACS IIDR 01/02 Mar 2001 Instrument Interfaces5 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

6. PACS IIDR 01/02 Mar 2001 Instrument Interfaces6 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

7. PACS IIDR 01/02 Mar 2001 Instrument Interfaces7 Interfaces Cryo Mechanics

8. PACS IIDR 01/02 Mar 2001 Instrument Interfaces8 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 elect. optical control cabling Status I/F Design Documents: PACS-ME-ID-003 Temperature Sensors ICD elect. control cabling Status I/F Design Temperature Sensors

9. PACS IIDR 01/02 Mar 2001 Instrument Interfaces9 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 optical cabling control Status I/F Design 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 Grating elect. Status I/F Design optical mechan. cabling control elect.

10. PACS IIDR 01/02 Mar 2001 Instrument Interfaces10 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 optical cabling control Status I/F Design Documents: PACS-ME-ID-004 Filters and Dichroics ICD Filters/Dichroics elect. Status I/F Design optical mechan.

11. PACS IIDR 01/02 Mar 2001 Instrument Interfaces11 Interfaces s-Ge:Ga Detector Assemblies

12. PACS IIDR 01/02 Mar 2001 Instrument Interfaces12 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 optical Status I/F Design elect. CRE Stress Modules Housing CRE Stress Modules/Housing mechan. therm. CRE

13. PACS IIDR 01/02 Mar 2001 Instrument Interfaces13 Interfaces Bolometer Unit

14. PACS IIDR 01/02 Mar 2001 Instrument Interfaces14 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 optical Status I/F Design elect. 4K Housing Filters 2K Cooler/Bolometer mechan. therm.