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Digital readouts for large microwave low-temperature detector arrays

Mazin, Benjamin A. and Day, Peter K. and Irwin, Kent D. and Reintsema, Carl D. and Zmuidzinas, Jonas (2006) Digital readouts for large microwave low-temperature detector arrays. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 559 (2). pp. 799-801. ISSN 0168-9002. https://resolver.caltech.edu/CaltechAUTHORS:20170408-143747863

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Abstract

Over the last several years many different types of low-temperature detectors (LTDs) have been developed that use a microwave resonant circuit as part of their readout. These devices include microwave kinetic inductance detectors (MKID), microwave SQUID readouts for transition edge sensors (TES), and NIS bolometers. Current readout techniques for these devices use analog frequency synthesizers and IQ mixers. While these components are available as microwave integrated circuits, one set is required for each resonator. We are exploring a new readout technique for this class of detectors based on a commercial-off-the-shelf technology called software defined radio (SDR). In this method a fast digital to analog (D/A) converter creates as many tones as desired in the available bandwidth. Our prototype system employs a 100 MS/s 16-bit D/A to generate an arbitrary number of tones in 50 MHz of bandwidth. This signal is then mixed up to the desired detector resonant frequency (~10 GHz), sent through the detector, then mixed back down to baseband. The baseband signal is then digitized with a series of fast analog to digital converters (80 MS/s, 14-bit). Next, a numerical mixer in a dedicated integrated circuit or FPGA mixes the resonant frequency of a specified detector to 0 Hz, and sends the complex detector output over a computer bus for processing and storage. In this paper we will report on our results in using a prototype system to readout a MKID array, including system noise performance, X-ray pulse response, and cross-talk measurements. We will also discuss how this technique can be scaled to read out many thousands of detectors.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.nima.2005.12.208DOIArticle
http://resolver.caltech.edu/CaltechETD:etd-10042004-120707Related ItemB. A. Mazin PhD thesis
Additional Information:© 2006 Elsevier. Available online 17 January 2006.
Subject Keywords:Software radio; MKID; Kinetic inductance; Detector readout
Issue or Number:2
Classification Code:PACS 07.50.Qx; 84.40.Lj
Record Number:CaltechAUTHORS:20170408-143747863
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170408-143747863
Official Citation:Benjamin A. Mazin, Peter K. Day, Kent D. Irwin, Carl D. Reintsema, Jonas Zmuidzinas, Digital readouts for large microwave low-temperature detector arrays, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 559, Issue 2, 15 April 2006, Pages 799-801, ISSN 0168-9002, http://doi.org/10.1016/j.nima.2005.12.208. (http://www.sciencedirect.com/science/article/pii/S0168900205025787)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75979
Collection:CaltechAUTHORS
Deposited By: 1Science Import
Deposited On:26 Apr 2017 20:45
Last Modified:03 Oct 2019 16:56

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