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24 September 2012 SuperSpec: design concept and circuit simulations
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SuperSpec is a pathfinder for future lithographic spectrometer cameras, which promise to energize extra-galactic astrophysics at (sub)millimeter wavelengths: delivering 200–500 kms-1 spectral velocity resolution over an octave bandwidth for every pixel in a telescope’s field of view. We present circuit simulations that prove the concept, which enables complete millimeter-band spectrometer devices in just a few square-millimeter footprint. We evaluate both single-stage and two-stage channelizing filter designs, which separate channels into an array of broad-band detectors, such as bolometers or kinetic inductance detector (KID) devices. We discuss to what degree losses (by radiation or by absorption in the dielectric) and fabrication tolerances affect the resolution or performance of such devices, and what steps we can take to mitigate the degradation. Such design studies help us formulate critical requirements on the materials and fabrication process, and help understand what practical limits currently exist to the capabilities these devices can deliver today or over the next few years.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Attila Kovács, Peter S. Barry, Charles M. Bradford, Goutam Chattopadhyay, Peter Day, Simon Doyle, Steve Hailey-Dunsheath, Matthew Hollister, Christopher McKenney, Henry G LeDuc, Nuria Llombart, Daniel P. Marrone, Philip Mauskopf, Roger C. O'Brient, Stephen Padin, Loren J. Swenson, and Jonas Zmuidzinas "SuperSpec: design concept and circuit simulations", Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84522G (24 September 2012);

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