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Development of Lumped Element Kinetic Inductance Detectors for NIKA

Roesch, M. and Benoit, A. and Bideaud, A. and Boudou, N. and Calvo, M. and Cruciani, A. and Doyle, S. and Leduc, H. G. and Monfardini, A. and Swenson, L. and Leclercq, S. and Mauskopf, P. and Schuster, K. F. (2011) Development of Lumped Element Kinetic Inductance Detectors for NIKA. In: 22nd International Symposium on Space Terahertz Technology, April 25-28, 2011, Tuscon, AZ.

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Lumped-element kinetic inductance detectors (LEKIDs) have recently shown considerable promise as direct absorption mm-wavelength detectors for astronomical applications. One major research thrust within the Néel Iram Kids Array (NIKA) collaboration has been to investigate the suitability of these detectors for deployment at the 30-meter IRAM telescope located on Pico Veleta in Spain. Compared to microwave kinetic inductance detectors (MKID), using quarter wavelength resonators, the resonant circuit of a LEKID consists of a discrete inductance and capacitance coupled to a feedline. A high and constant current density distribution in the inductive part of these resonators makes them very sensitive. Due to only one metal layer on a silicon substrate, the fabrication is relatively easy. In order to optimize the LEKIDs for this application, we have recently probed a wide variety of individual resonator and array parameters through simulation and physical testing. This included determining the optimal feed-line coupling, pixel geometry, resonator distribution within an array (in order to minimize pixel cross-talk), and resonator frequency spacing. Based on these results, a 144-pixel Aluminum array was fabricated and tested in a dilution fridge with optical access, yielding an average optical NEP of ~2 x 10^(-16) W/Hz^(1/2) (best pixels showed NEP = 6 x 10^(-17) W/Hz^(1/)2 under 4-8 pW loading per pixel). In October 2010 the second prototype of LEKIDs has been tested at the IRAM 30 m telescope. A new LEKID geometry for 2 polarizations will be presented. Also first optical measurements of a titanium nitride array will be discussed.

Item Type:Conference or Workshop Item (Paper)
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URLURL TypeDescription Paper
Mauskopf, P.0000-0001-6397-5516
Additional Information:© 2011 Associated Universities, Inc. This work was supported in part by the French National Research Agency Grant No. ANR-09-JCJC-0021-01. Part of this work was supported by the Keck Institute for Space Studies (KISS).
Group:Keck Institute for Space Studies
Funding AgencyGrant Number
Agence Nationale pour la Recherche (ANR)ANR-09-JCJC-0021-01
Keck Institute for Space Studies (KISS)UNSPECIFIED
Subject Keywords:superconducting resonators, kinetic inductance
Record Number:CaltechAUTHORS:20160310-135946192
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65266
Deposited By: Colette Connor
Deposited On:10 Mar 2016 22:20
Last Modified:02 Jun 2023 00:17

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