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SOFIA Science Instrument Trimesterly Review T1 ‘09 (Incremental Review)

SOFIA Science Instrument Trimesterly Review T1 ‘09 (Incremental Review). Harvey Moseley , Dominic Benford, Johannes Staguhn, George Voellmer NASA / GSFC. Principal Investigator: Dr. S. Harvey Moseley Partners: Cornell, NIST, UBC Instrument Type: Far-IR Direct Spectrometer.

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SOFIA Science Instrument Trimesterly Review T1 ‘09 (Incremental Review)

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  1. SOFIA Science Instrument Trimesterly ReviewT1 ‘09 (Incremental Review) Harvey Moseley, Dominic Benford, Johannes Staguhn, George Voellmer NASA / GSFC Principal Investigator: Dr. S. Harvey Moseley Partners: Cornell, NIST, UBC Instrument Type: Far-IR Direct Spectrometer

  2. Instrument Highlights: T1 2009 • Full team in place: • Systems Engineer (Voellmer) • Setup Detector Characterization(Jethava (postdoc); Chuss, part time) • Optical Design (Pasquale, part time) • Mechanical Design (Steigner, full time; Jackson, part time) • Completed first detailed optical design • Completed first flight detector package design • Detector characterization cryostat components tested or in fab • SAFIRE Science Team Meeting held 4/15/09

  3. SAFIRE Review Outline Items: • Fever Chart on Subsystems • Technical Progress • Budget Status • Schedule ±4 Months, Overall • FY09 Scope of Work • Risk Assessment

  4. SAFIRE Review Outline Items: • Fever Chart on Subsystems • Technical Progress • Budget Status • Schedule ±4 Months, Overall • FY09 Scope of Work • Risk Assessment

  5. SAFIRE Status Summary

  6. SAFIRE Review Outline Items: • Fever Chart on Subsystems • Technical Progress • Budget Status • Schedule ±4 Months, Overall • FY09 Scope of Work • Risk Assessment

  7. Quick Look at Details – need to update

  8. Recent Accomplishments Test Dewar • Received 2 PTC’s from Cryomech. Completed performance testing and rotation testing. • Completed acceptance testing of 2 Test Dewar ADR’s from HPD. Delivery XX/09 • Test cryostat design complete, 2 units in fab at Precision Cryogenics • Expect first Test Dewar cold test XX/09

  9. Recent Accomplishments Flight Instrument • Instrument science trades complete- go with a 2 grating design • Preliminary designs complete: • Optics • Cryostat / Thermal • Preliminary designs started: • Structure • Detector • Detector Packaging • Grating Mechanism • Fixed Optical elements • Exchangeable optical elements

  10. Current Status: Optics

  11. SAFIRE Science Team Meeting SAFIRE Optical Layout (I)

  12. SAFIRE Science Team Meeting SAFIRE Optical Layout (II)

  13. SAFIRE Science Team Meeting SAFIRE IFOV / EE • Ensquared Energy: 88% - 91%

  14. SAFIRE Science Team Meeting SAFIRE Diffraction Spots • Strehl range calculated across full field • Lowest Waveband is not Diffraction Limited

  15. SOFIA Instrument Complement

  16. SAFIRE Science Team Meeting SAFIRE Wavelength & Resolution “Required” Δv and λ

  17. SAFIRE Science Team Meeting Far-IR Spectrometer Sensitivity

  18. Current Status: Cryostat

  19. SAFIRE Science Team Meeting SAFIRE Instrument Model (VI)

  20. Current Status: Thermal

  21. Current Status: Structure

  22. SAFIRE Science Team Meeting SAFIRE Instrument Model (I)

  23. SAFIRE Science Team Meeting SAFIRE Instrument Model (II)

  24. SAFIRE Science Team Meeting SAFIRE Instrument Model (III)

  25. SAFIRE Science Team Meeting SAFIRE Instrument Model (IV)

  26. SAFIRE Science Team Meeting SAFIRE Instrument Model (V)

  27. Current Status: Detector

  28. SAFIRE Science Team Meeting Detector: Superconducting Bolometer Array Large Format Array Technologies for SAFIRE: Bump Bonds, cross-wafer vias, BUG bolometers

  29. Current Status: Detector Packaging

  30. SAFIRE Science Team Meeting 8x16 BUG detector in GISMO

  31. Current Status: Grating Mechanism

  32. Current Status: Optical Elements

  33. Current Status:

  34. UBC Multi Channel Electronics SAFIRE to use MCE readout electronics demonstrated by SCUBA-2 et al. SAFIRE Science Team Meeting

  35. SAFIRE Review Outline Items: • Fever Chart on Subsystems • Technical Progress • Budget Status • Schedule ±4 Months, Overall • FY09 Scope of Work • Risk Assessment

  36. Budget Status - FY08 Closeout • Budget Status, FY08: • SAFIRE baseline $1044K; first year of major funding! • Funding Received, fully committed* • Costing slower than expected due to asingle contract; expecting to solve soon. *as per GSFC definition

  37. FY09 Budget Status • $411K received to date (4/23/2009) • $390K committed to date • $  40K of bills will arrive by next week… • $300K (next portion of FY09 funds)supposed to arrive soon!

  38. Budget (II) Identify alternate funding sources if any: SPIRE funded detector development for; FY98-00 1 SR&T grant for bolometer development; FY00-02 1 ROSS grant for array and Fabry-Perot development; FY01-02 1 DDF grant for TES bilayer research; FY01/02 1 DDF grant for monochromatic photometry calibrator; FY01/02 Software funded through SOMO program up to FY03 1 ROSS grant for improved quantum efficiency; FY02/03 1 DDF grant for mechanism sensors; FY02 1 R&TD for SAFIRE support; FY02 1 DDF grant for bolometers w/polarizers; FY03 Internal R&D funding for detector test system; FY03 IR&D funding for SAFIRE support; FY04 R&TD funding for optical mechanisms granted; FY05 IR&D funding to enable multiplexing granted; FY05 NSF ACT project funding 1x32 detectors; FY04-06+ ROSS/APRA proposal for further detector developments granted; FY05-07 NSF Proposal awarded to support GISMO observing! ROSES/APRA grant to support large array fabrication! ROSES/APRA grant to support ultralow-NEP detectors Balloon-borne experiment to use detectors as in SAFIRE ROSES/APRA for new instrument technology development Past Ongoing New Submitted

  39. Budget (III) Work plan for FY07-13 with commissioning flight in ~late CY12 still on track. Plan: building SAFIRE in FY08/09/10, complete in FY11, and fly in ~December 2012. Flight work (optical design, cryogenic system, mechanisms, detectors/electr.) making excellent progress Reduction in FY09 budget required layoff of staff and putting some work (Detector array fabrication) on low level We remain committed to delivering SAFIRE as planned, and will work with SOFIA to enable this in the present adverse environment.

  40. SAFIRE Review Outline Items: • Fever Chart on Subsystems • Technical Progress • Budget Status • Schedule ±4 Months, Overall • FY09 Scope of Work • Risk Assessment

  41. SAFIRE Sliding Trimesterly+ Schedule

  42. SAFIRE Review Outline Items: • Fever Chart on Subsystems • Technical Progress • Budget Status • Schedule ±4 Months, Overall • FY09 Scope of Work • Risk Assessment

  43. FY09 Plan Considerations: Staff in place to make rapid progress Detector development co-funded by ROSES/APRA Plan of Work: Characterize prototype low-NEP detectors  slowed Conduct optical layout trades Mech/System Design  PDR (scheduled for June 17) Complete testing of GISMO Start production of flight detector parts Protoflight electronics from UBC

  44. SAFIRE Review Outline Items: • Fever Chart on Subsystems • Technical Progress • Budget Status • Schedule ±4 Months, Overall • FY09 Scope of Work • Risk Assessment

  45. QA Issues and Mitigations • Need to keep an eye on QA during detailed design phase

  46. Overview Risk Assessment Technological: in good shape! Risk: will flow from design work FY09 Mitigation: keep focused & continue testing everything! Airworthiness: Team for design work has begun, will do PDR first (note: as per advice from Scott Horner, deferring airworthiness) Programmatic: Had to accommodate reduction in funds in FY09 Slowed detector fabrication; let characterization come up Major char. Sys. Components complete & tested Postdoc (Nikhil Jethava) arrived April 1

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