CCAT-prime: design of the Mod-Cam receiver and 280 GHz MKID instrument module

Mod-Cam is a first light and commissioning instrument for the CCAT-prime project’s six-meter aperture Fred Young Submillimeter Telescope (FYST), currently under construction at 5600 m on Cerro Chajnantor in Chile’s Atacama Desert. Prime-Cam, a first-generation science instrument for FYST, will deliver over ten times greater mapping speed than current and near-term facilities for unprecedented 280–850 GHz broadband and spectroscopic measurements with microwave kinetic inductance detectors (MKIDs). CCAT-prime will address a suite of science goals, from Big Bang cosmology to star formation and galaxy evolution over cosmic time. Mod-Cam deployment on FYST with a 280 GHz instrument module containing MKID arrays is planned for early science observations in 2024. Mod-Cam will be used to test instrument modules for Prime-Cam, which can house up to seven instrument modules. We discuss the design and status of the 0.9 m diameter, 1.8 m long Mod-Cam receiver and 40 cm diameter 280 GHz instrument module, with cold stages at 40 K, 4 K, 1 K, and 100 mK. We also describe the instrument module’s cryogenic readout designs to enable the readout of more than 10,000 MKIDs across 18 networks.

[1]  J. Austermann,et al.  Aluminum-based millimeter-wave kinetic inductance detectors on 150~mm diameter substrates , 2022, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI.

[2]  S. Parshley,et al.  CCAT-prime: the Fred Young Submillimeter Telescope (FYST) final design and fabrication , 2022, Astronomical Telescopes + Instrumentation.

[3]  P. Mauskopf,et al.  CCAT-prime: RFSoC based readout for frequency multiplexed kinetic inductance detectors , 2022, Astronomical Telescopes + Instrumentation.

[4]  P. Mauskopf,et al.  Development and performance of universal readout harness for the Simons Observatory , 2022, Astronomical Telescopes + Instrumentation.

[5]  Edward J. Wollack,et al.  The Simons Observatory: A large-diameter truss for a refracting telescope cooled to 1 K. , 2022, The Review of scientific instruments.

[6]  Rodrigo G. Freundt,et al.  CCAT-Prime: Characterization of the First 280 GHz MKID Array for Prime-Cam , 2021, Journal of Low Temperature Physics.

[7]  E. Komatsu,et al.  CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope , 2021, The Astrophysical Journal Supplement Series.

[8]  Adrian T. Lee,et al.  The Simons Observatory Large Aperture Telescope Receiver , 2021, The Astrophysical Journal Supplement Series.

[9]  Nicholas Galitzki,et al.  The Simons Observatory: overview of data acquisition, control, monitoring, and computer infrastructure , 2020, Astronomical Telescopes + Instrumentation.

[10]  Simon Dicker,et al.  Design and fabrication of metamaterial anti-reflection coatings for the Simons Observatory , 2020, Astronomical Telescopes + Instrumentation.

[11]  P. Mauskopf,et al.  CCAT-prime: Designs and status of the first light 280 GHz MKID array and mod-cam receiver , 2020, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X.

[12]  Edward J. Wollack,et al.  The Simons Observatory: the Large Aperture Telescope Receiver (LATR) integration and validation results , 2020, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X.

[13]  Z. Ahmed,et al.  The Simons Observatory: Magnetic Sensitivity Measurements of Microwave SQUID Multiplexers , 2020, IEEE Transactions on Applied Superconductivity.

[14]  Edward J. Wollack,et al.  The Simons Observatory: metamaterial microwave absorber and its cryogenic applications. , 2020, Applied optics.

[15]  Adrian T. Lee,et al.  The Simons Observatory: modeling optical systematics in the Large Aperture Telescope. , 2020, Applied optics.

[16]  Adrian T. Lee,et al.  Simons Observatory Microwave SQUID Multiplexing Readout: Cryogenic RF Amplifier and Coaxial Chain Design , 2020, 2003.08949.

[17]  J. Austermann,et al.  Sensitivity of the Prime-Cam Instrument on the CCAT-Prime Telescope , 2019, Journal of Low Temperature Physics.

[18]  Edward J. Wollack,et al.  The Simons Observatory: science goals and forecasts , 2018, Journal of Cosmology and Astroparticle Physics.

[19]  P. Mauskopf,et al.  Large format arrays of kinetic inductance detectors for the TolTEC millimeter-wave imaging polarimeter (Conference Presentation) , 2018, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX.

[20]  Brian Keating,et al.  Simons Observatory large aperture receiver simulation overview , 2018, Astronomical Telescopes + Instrumentation.

[21]  Edward J. Wollack,et al.  Cold optical design for the large aperture Simons' Observatory telescope , 2018, Astronomical Telescopes + Instrumentation.

[22]  Douglas Scott,et al.  Prime-Cam: a first-light instrument for the CCAT-prime telescope , 2018, Astronomical Telescopes + Instrumentation.

[23]  Edward J. Wollack,et al.  Pushing the Limits of Broadband and High-Frequency Metamaterial Silicon Antireflection Coatings , 2018, 1804.08368.

[24]  G. Hilton,et al.  Millimeter-Wave Polarimeters Using Kinetic Inductance Detectors for TolTEC and Beyond , 2018, Journal of Low Temperature Physics.

[25]  L. Wei,et al.  Cryogenic LED pixel-to-frequency mapper for kinetic inductance detector arrays , 2017, 1707.03874.

[26]  Enzo Pascale,et al.  Instrumental performance and results from testing of the BLAST-TNG receiver, submillimeter optics, and MKID detector arrays , 2016, Astronomical Telescopes + Instrumentation.

[27]  Y. Wang,et al.  Optical Demonstration of THz, Dual-Polarization Sensitive Microwave Kinetic Inductance Detectors , 2016, 1603.02963.

[28]  Edward J. Wollack,et al.  Large-aperture wide-bandwidth antireflection-coated silicon lenses for millimeter wavelengths. , 2013, Applied optics.

[29]  Giampaolo Pisano,et al.  A review of metal mesh filters , 2006, SPIE Astronomical Telescopes + Instrumentation.