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Published May 2012 | public
Journal Article

The Status of Music: A Multicolor Sub/millimeter MKID Instrument


We report on the recent progress of the Multicolor Submillimeter (kinetic) Inductance Camera, or MUSIC. MUSIC will use antenna-coupled Microwave Kinetic Inductance Detectors to observe in four colors (150 GHz, 230 GHz, 290 GHz and 350 GHz) with 2304 detectors, 576 per band, at the Caltech Submillimeter Observatory. It will deploy in 2012. Here we provide an overview of the instrument, focusing on the array design. We have also used a pathfinder demonstration instrument, DemoCam, to identify problems in advance of the deployment of MUSIC. In particular, we identified two major limiters of our sensitivity: out-of-band light directly coupling to the detectors (i.e. not through the antenna), effectively an excess load, and a large 1/f contribution from our amplifiers and electronics. We discuss the steps taken to mitigate these effects to reach background-limited performance (BLIP) in observation.

Additional Information

© 2012 Springer Science+Business Media, LLC. Received: 15 August 2011. Accepted: 10 January 2012. Published online: 7 February 2012. We would like to thank Js. Gao and A. Vayonakis for their useful discussions. We acknowledge support from the National Science Foundation grant AST-0705157, the NASA Graduate Student Research Program, and the generous contributions from the Gordon and Betty Moore Foundation. We also thank Carpenter Technology for the provision of powdered stainless steel.

Additional details

August 22, 2023
March 5, 2024