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CCAT: A status update on the EoR-Spec instrument module for Prime-Cam

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arxiv 2409.05979 v1 pith:2LRSGQK5 submitted 2024-09-09 astro-ph.IM astro-ph.COastro-ph.GA

CCAT: A status update on the EoR-Spec instrument module for Prime-Cam

Rodrigo Freundt , Yaqiong Li , Doug Henke , Jason Austermann , James R. Burgoyne , Scott Chapman , Steve K. Choi , Cody J. Duell
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Zach Huber Michael Niemack Thomas Nikola Lawrence Lin Dominik A. Riechers Gordon Stacey Anna K. Vaskuri Eve M. Vavagiakis Jordan Wheeler Bugao Zou
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classification astro-ph.IM astro-ph.COastro-ph.GA
keywords eor-specinstrumentlineopticalstardesigndesignedearly
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The Epoch of Reionization Spectrometer (EoR-Spec) is an upcoming Line Intensity Mapping (LIM) instrument designed to study the evolution of the early universe (z = 3.5 to 8) by probing the redshifted [CII] 158 $\mu$m fine-structure line from aggregates of galaxies. The [CII] emission is an excellent tracer of star formation since it is the dominant cooling line from neutral gas heated by OB star light and thus can be used to probe the reionization of the early Universe due to star formation. EoR-Spec will be deployed on Prime-Cam, a modular direct-detection receiver for the 6-meter Fred Young Submillimeter Telescope (FYST), currently under construction by CPI Vertex Antennentechnik GmbH and to be installed near the summit of Cerro Chajnantor in the Atacama Desert. This instrument features an image plane populated with more than 6500 Microwave Kinetic Inductance Detectors (MKIDs) that are illuminated by a 4-lens optical design with a cryogenic, scanning Fabry-Perot Interferometer (FPI) at the pupil of the optical system. The FPI is designed to provide a spectral resolving power of $R\sim100$ over the full spectral range of 210--420 GHz. EoR-Spec will tomographically survey the E-COSMOS and E-CDFS fields with a depth of about 4000 hours over a 5 year period. Here we give an update on EoR-Spec's final mechanical/optical design and the current status of fabrication, characterization and testing towards first light in 2026.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Spectral Data-cube Cleaning for CCAT Deep Spectroscopic Survey. I. Effect of correlated noise and filtering on the power spectrum

    astro-ph.GA 2026-07 conditional novelty 6.0

    The EoR-Spec Filter-and-Bin pipeline suppresses atmospheric 1/f noise by about four orders of magnitude and recovers the [CII]+CO power spectrum above k ~ 0.1 Mpc^-1, but suppresses large-scale modes below 20% transfe...

  2. Testing masking effectiveness using multi-line image cubes based on COSMOS2020 for [CII] line intensity mapping at $z_{[CII]} > 3.5$

    astro-ph.GA 2026-06 unverdicted novelty 3.0

    Simulations from COSMOS2020 show masking recovers [CII] above 300 GHz in ideal conditions but noise prevents useful S/N until near the end of 2000-hour observations.