CCAT: Comparisons of 280 GHz TiN and Al Kinetic Inductance Detector Arrays

• DOI: 10.48550/arxiv.2406.06828
• Publication Date: 2024-06-10
• Authors: Cody J. Duell; J. E. Austermann; James A. Beall; James Burgoyne; Scott Chapman; Steve K. Choi; Rodrigo G. Freundt; Jiansong Gao; Christopher Groppi; Anthony I. Huber; Zachary B. Huber; Johannes Hubmayr; Ben Keller; Yaqiong Li; Lawrence T. Lin; Justin Matthewson; P. Mauskopf; Alicia Middleton; Colin C. Murphy; Michael D. Niemack; Thomas Nikola; Adrian K. Sinclair; Ema Smith; Jeff Van Lanen; Anna Vaskuri; Eve M. Vavagiakis; Michael Vissers; Samantha Walker; Jordan Wheeler; Bugao Zou
• Keywords: FOS: Physical sciences; Astrophysics - Instrumentation and Methods for Astrophysics; Instrumentation and Methods for Astrophysics (astro-ph.IM)

The CCAT Collaboration's six-meter Fred Young Submillimeter Telescope is scheduled to begin observing in the Chilean Atacama 2025, targeting a variety of science goals throughout cosmic history. Prime-Cam 1.8-meter diameter cryostat that will host up seven independent instrument modules designed for simultaneous spectroscopic and broadband, polarimetric surveys at millimeter submillimeter wavelengths. first these modules, 280 GHz module, include ${\sim}$10,000 kinetic inductance detectors (KIDs) across three arrays. While array was fabricated out tri-layer TiN/Ti/TiN, other two arrays were single layer Al. This combination materials within same provides unique opportunity directly compare performance noise properties different detector are seeing increasing use field. We present preliminary comparisons here based on lab testing, along with discussion potential impacts operation when translating raw data science-grade maps.