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

Vavagiakis, Eve M.; Duell, Cody J.; Austermann, J. E.; Beall, James A.; Bhandarkar, Tanay; Chapman, Scott; Choi, Steve K.; Coppi, Gabriele; Dicker, Simon; Devlin, Mark J.; Freundt, Rodrigo G.; Gao, Jiansong; Groppi, Christopher; Herter, T.; Huber, Zachary B.; Hubmayr, Johannes; Johnstone, Doug; Keller, Ben; Kofman, Anna M.; Li, Yaqiong; Mauskopf, Philip; McMahon, Jeff; Moore, J. Douglas; Murphy, Colin C.; Niemack, Michael D.; Nikola, Thomas; Orlowski-Scherer, John; Rossi, Kayla M.; Sinclair, Adrian; Stacey, G. J.; Ullom, Joel N.; Vissers, Michael; Wheeler, Jordan; Xu, Zhisheng; Zhu, Ningfeng; Zou, Bugao

doi:10.1117/12.2630115

Cited by 2 publications

(4 citation statements)

References 26 publications

(42 reference statements)

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“…The 850 GHz array will use kinetic inductance detectors (KIDs), as with the other Prime-Cam modules operating at lower frequencies [e.g., 8,30]. As described in this work and references therein, the photon sensitivity of a KID results from a superconducting resonator that derives a significant fraction of its total inductance from the kinetic inductance of an absorbing strip (inductive in this case).…”

Section: Kinetic Inductance Detectors (Kids)mentioning

confidence: 99%

“…2.2, considering only the limitations of detector fabrication, trace width and effects on noise performance, coupled with the desire to maximize mapping speed, a 52,000 KID focal plane was initially considered. The practicalities of readout for this many detectors, running sufficient cryogenic RF lines for even 1000 KIDs per network, led us to settle on the 40,000 KID design (essentially resulting in a doubling of the cryogenic RF design being deployed in the ModCam receiver [30,8] and the other first light Prime-Cam modules [5].…”

Section: Readoutmentioning

confidence: 99%

“…The modularity of Prime-Cam enables each optical path to be independently optimized for the science requirements of each instrument module. While the lower frequency modules adopt similar optical designs and layouts to the the Simons Observatory LATR [6,7], as described in [8], the 850 GHz module represents a significant departure from these designs [24]. The 850 GHz module contains a series of anti-reflection coated silicon optics, blocking filters, Lyot stop, and the detector focal plane.…”

Section: Opticsmentioning

confidence: 99%

“…A single instrument module cryogenic receiver, Mod-Cam, is being built for first light observations with a 280 GHz instrument module on FYST [8], which will be followed by the larger seven module instrument Prime-Cam [5] which will enable unique observations that address astrophysical questions ranging from the physics of star formation to Big Bang cosmology. Prime-Cam will simultaneously cover five bands in five separate camera modules, spanning 190 to 900 GHz (1.6 to 0.33 mm), along with two spectroscopic modules.…”

Section: Introductionmentioning

confidence: 99%

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CCAT-prime: the 850GHz camera for prime-cam on FYST

Chapman

Huber

Sinclair

et al. 2022

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI

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The Fred Young Submillimeter Telescope (FYST) at the Cerro-Chajnantor Atacama Telescope prime (CCATprime) Facility will host Prime-Cam as a powerful, first generation camera with imaging polarimeters working at several wavelengths and spectroscopic instruments aimed at intensity mapping during the Epoch of Reionization.Here we introduce the 850 GHz (350 micron) instrument module. This will be the highest frequency module in Prime-Cam and the most novel for astronomical and cosmological surveys, taking full advantage of the atmospheric transparency at the high 5600 meter CCAT-prime siting on Cerro Chajnantor. The 850 GHz module will deploy ∼40,000 Kinetic Inductance Detectors (KIDs) with Silicon platelet feedhorn coupling (both fabricated at NIST), and will provide unprecedented broadband intensity and polarization measurement capabilities. The 850 GHz module will be key to addressing pressing astrophysical questions regarding galaxy formation, Big Bang cosmology, and star formation within our own Galaxy. We present the motivation and overall design for the module, and initial laboratory characterization.

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Section: Kinetic Inductance Detectors (Kids)mentioning

confidence: 99%

Section: Readoutmentioning

confidence: 99%

Section: Opticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CCAT-prime: the 850GHz camera for prime-cam on FYST

Chapman

Huber

Sinclair

et al. 2022

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI

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Thermal and mechanical study of a parametrised cryostat model for optical characterisation of upcoming CMB experiments

Gascard,

Wang,

Gudmundsson

et al. 2024

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII

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Current and future experiments observing the cosmic microwave background require a detailed understanding of optical performance at cryogenic temperatures. Pre-deployment analysis of optics can be performed in customengineered cryogenic test beds, such as Mod-Cam, a first light camera for the CCAT project. This work presents studies of the mechanical and thermal performance of CryoSim, a model of a generic cylindrical 4-K cryostat cooled with a commercial pulse tube cryocooler that can be used to characterise optical components and full reimaging optical systems. CryoSim is extensively parametrised, allowing the joint analysis and optimisation of mechanical and thermal performance via finite element methods. Results from this model are validated against measured cooldown data of the Mod-Cam cryostat. Due to the extensive parametrisation of the model, significant modifications of the cryostat geometry may be implemented to be representative of any system the scientific community may desire, and validation of thermal and mechanical performance can be carried out rapidly.

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

Cited by 2 publications

References 26 publications

CCAT-prime: the 850GHz camera for prime-cam on FYST

CCAT-prime: the 850GHz camera for prime-cam on FYST

Thermal and mechanical study of a parametrised cryostat model for optical characterisation of upcoming CMB experiments

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