CCAT: LED Mapping and Characterization of the 280 GHz TiN KID Array
Prime-Cam, one of the primary instruments for the Fred Young Submillimeter Telescope (FYST) developed by the CCAT Collaboration, will house up to seven instrument modules, with the first operating at 280 GHz. Each module will include three arrays of superconducting microwave kinetic inductance detectors (KIDs). The first KID array fabricated for the 280 GHz module uses titanium-nitride (TiN) as the superconducting material and has 3,456 individual detectors, while the other two arrays use aluminum. This paper presents the design and laboratory characterization of the 280 GHz TiN array, which is cooled below its critical temperature to <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula> 0.1K and read out over six RF feedlines. LED mapping, a technique for matching the measured resonant frequency of a detector to its physical position, was performed on the array so that the results can be used to lithographically trim the KID capacitors and increase the yield of the array by reducing frequency collisions. We present the methods and results of LED mapping the 280 GHz TiN KID array before deployment on FYST.
Authors
- Scott Chapman (ORCID: https://orcid.org/0000-0003-4732-8452)
- Adrian K. Sinclair (ORCID: https://orcid.org/0000-0003-0064-6867)
- Alicia Middleton
- Rodrigo G. Freundt
- Ben Keller (ORCID: https://orcid.org/0000-0002-2978-7957)
- Lawrence T. Lin (ORCID: https://orcid.org/0000-0001-5465-8973)
- Cody J. Duell (ORCID: https://orcid.org/0000-0002-6318-1924)
- Darshan Patel (ORCID: https://orcid.org/0009-0009-6612-7913)
- Eve M. Vavagiakis (ORCID: https://orcid.org/0000-0002-2105-7589)
- James Burgoyne (ORCID: https://orcid.org/0000-0001-8706-1268)
- Michael D. Niemack (ORCID: https://orcid.org/0000-0001-7125-3580)
- Anthony I. Huber (ORCID: https://orcid.org/0000-0001-9698-0151)
- Samantha Walker (ORCID: https://orcid.org/0000-0002-5855-4036)
- A. T. Crites (ORCID: https://orcid.org/0009-0005-4099-8842)
- Steve K. Choi (ORCID: https://orcid.org/0000-0002-9113-7058)
- Zachary B. Huber (ORCID: https://orcid.org/0000-0003-4573-4094)
- Victoria Butler (ORCID: https://orcid.org/0000-0002-0941-0407)
- Jordan Wheeler (ORCID: https://orcid.org/0000-0003-1678-5570)
- Anna Vaskuri (ORCID: https://orcid.org/0000-0003-1246-4550)
- Johannes Hubmayr (ORCID: https://orcid.org/0000-0002-2781-9302)
- Ema Smith
- Yuhan Wang
- M. R. Vissers
- Jason Austermann
Institutions
- University of California, Riverside (US)
- National Institute of Standards and Technology (US)
- University of British Columbia (CA)
- Duke University (US)
- Cornell University (US)
- University of Victoria (CA)
Publication Details
- Journal
- IEEE Transactions on Applied Superconductivity
- Published
- 2024-12-16
- DOI
- https://doi.org/10.1109/tasc.2024.3517564
- Citations
- 1
- Primary Topic
- GaN-based semiconductor devices and materials
- Type
- article
- Field-Weighted Citation Impact
- 0.31