SPICA/SAFARI (SPace Infrared telescope for Cosmology and Astrophysics)

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1 SPICA/SAFARI (SPace Infrared telescope for Cosmology and Astrophysics) 1

2 SPICA/SAFARI (SPace Infrared telescope for Cosmology and Astrophysics) Summary SAFARI (SPICA far-infrared instrument) is an imaging FTS spectrometer being developed in Europe/Canada with contributions by JAXA and NASA Scientific instruments operating over wavelength range of 5-200µm Cooled 3.5m telescope (as apposed to Herschel's warm telescope) Low thermal background, increased collecting area and superior angular resolution can achieve sensitivities an order of magnitude better than Herschel

3 Founding Canadian SPICA Science Team David A. Naylor Department of Physics and Astronomy, University of Lethbridge James Di Francesco National Research Council Canada, Herzberg Institute of Astrophysics Department of Physics and Astronomy, University of Victoria Mark Halpern Department of Physics and Astronomy, University of British Columbia Martin Houde Department of Physics and Astronomy, University of Western Ontario Doug Johnstone Department of Physics and Astronomy, University of Victoria Gilles Joncas Department of Physics, Laval University Rene Plume Department of Physics and Astronomy, University of Calgary Douglas Scott Department of Physics and Astronomy, University of British Columbia

4 History 50 missions considered for ESA s Cosmic Vision call. 9 missions selected to proceed (6 medium, M-class missions of which SPICA is one and 3 large, L-class missions) Of the 6 M-class missions, 3 (Euclid, PLATO and Solar Orbiter) have been selected for definition phase. SPICA still being considered to join them. SPC will meet in June Of these remaining missions, 2 (or 3) will be selected for flight with an estimated launch date of 2017

5 2011 Yearplan Jan JAXA FPI Review Feb SPC AWG/SSAC Mar SAFARI Consortium meeting JAXA RFP Jun SPICA Science Workshop SPC AWG/SSAC Detector System CoDR July Red Book ready Sept SAFARI Consortium Meeting SVR/IRR Closeout JAXA SDR Nov SPC AWG/SSAC hopefully SPICA Final Approval, beginning European phase B. Update Yellow Book to Red Book, Science Management plan Dec SAFARI-JAXA System Meeting JAXA Phase Up Review after SDR closure

6 SPICA/SAFARI at the U of L Detector testing of PACS/FIFI-LS photoconductors (MPE, Germany) and Nb TES s (Cardiff, UK and Lethbridge) including performance evaluation when applied to an FTS. Assessment of prototype SAFARI FTS beamsplitters. Creation of SPICA/SAFARI software simulator. Design of pulse tube based cryogenic test chamber to facilitate SAFARI phase 2 testing of key spectrometer components. Secured zero cost loan of a prototype cryogenic mirror translation stage from TNO, Holland. Key component of an FTS. New Canadian SPICA/SAFARI web site (

7 Aug 2008 Dec 2008 Mar 2009 Jun 2009 Sep 2009 Dec 2009 Mar 2010 Jun 2010 Sep 2010 Dec 2010 Mar 2011 Jun 2011 U of L Progress to Date 2 large capacity cryostats with closed cycle refrigerators integrated for detector testing Detector simulator software written 4 He- 3 He refrigerator integrated and tested for <1K operation Simulation of non-linear detector response Testing photoconductor detector array in cryostat, using custom built readout electronics Overall telescope simulator architecture designed Revise cryogenic platform design to minimize thermal and optical loading on detectors during tests Transimpedence readout electronics designed for photoconductor array Verification of simulator output for optical transmission simulations Production of the group s first TES detectors, and improvements in photoconductor tests Spectrometer module added to simulator software, enabling spectra to be simulated and verified against the SPIRE pipeline More TES detectors fabricated and tested with FTS; sensitivities of W/ Hz achieved TES modelling added to simulator High-power pulse-tube cooler tested for future translation stage cryogenic tests Improved far-ir filters supplied by Cardiff for higher sensitivity measurements New TES detectors and readout electronics produced Noise simulation included in simulator Production and testing of carbon fibre support struts for large cryogenic testbed Third batch of TES detectors produced, including 3x3 array Simulator suite delivered to CSA Temperature monitoring hardware acquired for testing of large cryogenic testbed components Performance of latest 4K TES detectors improved to <10-13 W/ Hz Simulator testing continues; predictions of effects of FTS mirror drive jitter and telescope temperature fluctutations ICD for proposed cryogenic testbed facility produced Testing of temperature sensors and cryogenic controller for testbed facility Testing of 3x3 TES array Renishaw laser interferometer tested on warm FTS Simulator code reorganized to simplify maintenance and improve efficiency; paper published in IOP Meas. Sci. Tech. A cryostat reconfigured for cryogenic testing of hexapod structure Prototype hexapod structure assembled for room-temperature tests

8 On-going Work at U of L Test Renishaw interferometer using room temperature translation stage Assemble prototype CFRP hexapod Mechanical and thermal load testing of hexapod at room temperature Test Renishaw interferometer through cryostat window, and measure pulse-tube cooler vibration to feedback into testbed design Start manufacture of cryogenic testbed subcomponents related to hexapod support structure

9 SPICA/SAFARI at the U of L Extension Work (no cost to CSA) Continue with TES detector fabrication and testing Continue development of the SPICA/SAFARI software simulator Test simple cryogenic scanning mechanism with interferometer in preparation for ODL tests Next Phase Manufacture, integration and assembly of cryogenic test facility Room temperature and 4K evaluation of the TNO mirror translation stage