Status of MUSIC, the MUltiwavelength Sub/millimeter Inductance Camera

Golwala, S. R.; Bockstiegel, Clint; Brugger, Spencer; Czakon, Nicole G.; Day, Peter; Downes, T. P.; Duan, Ran; Gao, Jiansong; Gill, Amandeep; Glenn, J.; Hollister, Matthew I.; Leduc, H. G.; Maloney, Philip R.; Mazin, Benjamin A.; McHugh, S.; Miller, David; Noroozian, Omid; Nguyen, Hien; Sayers, Jack; Schlaerth, J.; Siegel, Seth R.; Vayonakis, Anastasios; Wilson, P.; Žmuidzinas, J.

doi:10.1117/12.926055

Cited by 25 publications

(17 citation statements)

References 33 publications

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“…The pixels on these chips have an antenna connected to superconducting broadband filters that separate the signal into multiple colors and deliver them into different detectors, which can be for example TESs [19] or MKIDs [22].…”

Section: Low-resolution On-chip Filters For Multichroic Imagingmentioning

confidence: 99%

Superconducting On-Chip Spectrometery for Millimeter-submillimeter Wave Astronomy

Endo

2015

IEICE Trans. Electron.

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Section: Low-resolution On-chip Filters For Multichroic Imagingmentioning

confidence: 99%

Superconducting On-Chip Spectrometery for Millimeter-submillimeter Wave Astronomy

Endo

2015

IEICE Trans. Electron.

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“…Direct absorption in CPW inductors has also been observed. 13,37 To prevent this, our design places the inductor above and very close to a ground plane, which enforces a short-circuit boundary condition so that the field strength of an incoming EM wave at the inductor is minimized. To our knowledge, there are no mechanisms aside from these two by which optical power can directly couple to the KID.…”

Section: Design Of the Readout Circuitmentioning

confidence: 99%

“…13,37 This motivates the choice for the capacitor of a parallel-plate structure, which acts as a poor antenna. Direct absorption in CPW inductors has also been observed.…”

Section: Design Of the Readout Circuitmentioning

confidence: 99%

“…NIKA 26,27 has demonstrated handling of 400 tones over a 500 MHz bandwidth. 28 MAKO 29-32 has adapted the MUSIC ROACH FPGA platform readout hardware 13,33,34 and rewritten its firmware to read out 1000 tones in the f r range 125-250 MHz and fabricated a TiN x KID array matching this tone density (400 tones in about 50 MHz).…”

Section: Kid Multiplexability and Recent Readout Advancesmentioning

confidence: 99%

“…The last is particularly useful because reception architectures can be designed to have broad bandwidths (2.5:1 and larger), so, by placing a filter bank at the microstrip output, a single pixel can be used to obtain substantial spectral information. For example, multiple broad spectral bands can be extracted from a single pixel, as in the MUSIC instrument, 13 or many narrow channels can be analyzed to perform direct detection spectroscopy, as in the SuperSpec [14][15][16] design.…”

Section: 12mentioning

confidence: 99%

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Design of antenna-coupled lumped-element titanium nitride KIDs for long-wavelength multi-band continuum imaging

Beyer

Golwala

et al. 2014

SPIE Proceedings

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Many applications in cosmology and astrophysics at millimeter wavelengths -CMB polarization, studies of galaxy clusters using the Sunyaev-Zeldovich effect, studies of star formation at high redshift and in our local universe and our galaxy -require large-format arrays of millimeter-wave detectors. Feedhorn, lens-coupled twinslot antenna, and phased-array antenna architectures for receiving mm-wave light present numerous advantages for control of systematics and for simultaneous coverage of both polarizations and/or multiple spectral bands. Simultaneously, kinetic inductance detectors using high-resistivity materials like titanium nitride are an attractive sensor option for large-format arrays because they are highly multiplexable and because their high responsivity can render two-level-system noise subdominant to photon and recombination noise. However, coupling the two is a challenge because of the impedance mismatch between the microstrip exiting these architectures and the high resistivity of titanium nitride. Mitigating direct absorption in the KID is also a challenge. We present a detailed titanium nitride KID design that addresses these challenges. The KID inductor is capacitively coupled to the microstrip in such a way as to form a lossy termination without creating an impedance mismatch. A parallelplate capacitor design mitigates direct absorption, uses hydrogenated amorphous silicon, and yields acceptable two-level-system noise. We show that an optimized design can yield expected sensitivities very close to the fundamental limit from photon and recombination noises for two relevant examples: single spectral band designs appropriate for 90 and 150 GHz for CMB polarization and a multi-spectral-band design that covers 90 GHz to 405 GHz in six bands for SZ effect studies.Keywords: sensors, low-temperature detectors, bolometers, submillimeter-wave and millimeter-wave receivers and detectors, kinetic inductance detectors, radio telescopes and instrumentation SCIENTIFIC MOTIVATIONTo realize their full potential, coming missions in astrophysics and cosmology in space and on the ground require tens to hundreds of thousands of detectors in multiple mm/submm spectral bands with sensitivities approaching fundamental noise limits. These detectors must be highly multiplexable, and architectures consistent with microstrip coupling of the incoming light are strongly preferred.If confirmed, the recent BICEP2 detection of B-mode polarization of the cosmic microwave background (CMB) due to the inflationary gravitational wave background motivates comprehensive ground-and space-based missions to map polarization over the entire sky. This is necessary not only to detect the dependence on angular scale, but also because BICEP2's B-mode measurement is limited by intrinsic statistical fluctuations of the CMB in the 2% of the sky studied to date: more sky must be mapped simply to improve the uncertainties. Independent of BICEP2, the measurement of the neutrino masses and hierarchy via an arcminute-scale ground-based CMB ...

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WSPEC: A Waveguide Filter-Bank Focal Plane Array Spectrometer for Millimeter Wave Astronomy and Cosmology

Bryan¹,

Aguirre²,

Che³

et al. 2015

J Low Temp Phys

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Imaging and spectroscopy at (sub-)millimeter wavelengths are key frontiers in astronomy and cosmology. Large area spectral surveys with moderate spectral resolution (R=50-200) will be used to characterize large scale structure and star formation through intensity mapping surveys in emission lines such as the CO rotational transitions. Such surveys will also be used to study the SZ effect, and will detect the emission lines and continuum spectrum of individual objects. WSPEC is an instrument proposed to target these science goals. It is a channelizing spectrometer realized in rectangular waveguide, fabricated using conventional high-precision metal machining. Each spectrometer is coupled to free space with a machined feed horn, and the devices are tiled into a 2D array to fill the focal plane of the telescope. The detectors will be aluminum Lumped-Element Kinetic Inductance Detectors (LEKIDs). To target the CO lines and SZ effect, we will have bands at 135-175 GHz and 190-250 GHz, each Nyquist-sampled at R ≈200 resolution. Here we discuss the instrument concept and design, and successful initial testing of a WR10 (i.e. 90 GHz) prototype spectrometer. We recently tested a WR5 (180 GHz) prototype to verify that the concept works at higher frequencies, and also designed a resonant backshort structure that may further increase the optical efficiency. We are making progress towards integrating a spectrometer with a LEKID array and deploying a prototype device to a telescope for first light.

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Status of MUSIC, the MUltiwavelength Sub/millimeter Inductance Camera

Cited by 25 publications

References 33 publications

Superconducting On-Chip Spectrometery for Millimeter-submillimeter Wave Astronomy

Superconducting On-Chip Spectrometery for Millimeter-submillimeter Wave Astronomy

Design of antenna-coupled lumped-element titanium nitride KIDs for long-wavelength multi-band continuum imaging

WSPEC: A Waveguide Filter-Bank Focal Plane Array Spectrometer for Millimeter Wave Astronomy and Cosmology

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