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Proceedings Paper

The cryomechanical design of MUSIC: a novel imaging instrument for millimeter-wave astrophysics at the Caltech Submillimeter Observatory
Author(s): Matthew I. Hollister; Nicole G. Czakon; Peter K. Day; Thomas P. Downes; Ran Duan; Jiansong Gao; Jason Glenn; Sunil R. Golwala; Henry G. LeDuc; Philip R. Maloney; Benjamin A. Mazin; Hien Trong Nguyen; Omid Noroozian; Jack Sayers; James Schlaerth; Seth Siegel; John E. Vaillancourt; Anastasios Vayonakis; Philip Wilson; Jonas Zmuidzinas
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Paper Abstract

MUSIC (Multicolor Submillimeter kinetic Inductance Camera) is a new facility instrument for the Caltech Submillimeter Observatory (Mauna Kea, Hawaii) developed as a collaborative effect of Caltech, JPL, the University of Colorado at Boulder and UC Santa Barbara, and is due for initial commissioning in early 2011. MUSIC utilizes a new class of superconducting photon detectors known as microwave kinetic inductance detectors (MKIDs), an emergent technology that offers considerable advantages over current types of detectors for submillimeter and millimeter direct detection. MUSIC will operate a focal plane of 576 spatial pixels, where each pixel is a slot line antenna coupled to multiple detectors through on-chip, lumped-element filters, allowing simultaneously imaging in four bands at 0.86, 1.02, 1.33 and 2.00 mm. The MUSIC instrument is designed for closed-cycle operation, combining a pulse tube cooler with a two-stage Helium-3 adsorption refrigerator, providing a focal plane temperature of 0.25 K with intermediate temperature stages at approximately 50, 4 and 0.4 K for buffering heat loads and heat sinking of optical filters. Detector readout is achieved using semi-rigid coaxial cables from room temperature to the focal plane, with cryogenic HEMT amplifiers operating at 4 K. Several hundred detectors may be multiplexed in frequency space through one signal line and amplifier. This paper discusses the design of the instrument cryogenic hardware, including a number of features unique to the implementation of superconducting detectors. Predicted performance data for the instrument system will also be presented and discussed.

Paper Details

Date Published: 15 July 2010
PDF: 12 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77411L (15 July 2010); doi: 10.1117/12.856780
Show Author Affiliations
Matthew I. Hollister, California Institute of Technology (United States)
Nicole G. Czakon, California Institute of Technology (United States)
Peter K. Day, Jet Propulsion Lab. (United States)
Thomas P. Downes, California Institute of Technology (United States)
Ran Duan, California Institute of Technology (United States)
Jiansong Gao, National Institute of Standards and Technology (United States)
Jason Glenn, Univ. of Colorado at Boulder (United States)
Sunil R. Golwala, California Institute of Technology (United States)
Henry G. LeDuc, Jet Propulsion Lab. (United States)
Philip R. Maloney, Univ. of Colorado at Boulder (United States)
Benjamin A. Mazin, Univ. of California, Santa Barbara (United States)
Hien Trong Nguyen, Jet Propulsion Lab. (United States)
Omid Noroozian, California Institute of Technology (United States)
Jack Sayers, Jet Propulsion Lab. (United States)
James Schlaerth, Univ. of Colorado at Boulder (United States)
Seth Siegel, California Institute of Technology (United States)
John E. Vaillancourt, SOFIA/USRA, NASA Ames Research Ctr. (United States)
Anastasios Vayonakis, California Institute of Technology (United States)
Philip Wilson, Jet Propulsion Lab. (United States)
Jonas Zmuidzinas, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 7741:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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