Design and performance of the ADMX SQUID-based microwave receiver

被引：62

作者：

Asztalos, S. J. ^{[2
]}

Carosi, G. ^{[2
]}

Hagmann, C. ^{[2
]}

Kinion, D. ^{[2
]}

van Bibber, K. ^{[2
]}

Hotz, M. ^{[1
]}

Rosenberg, L. J. ^{[1
]}

Rybka, G. ^{[1
]}

Wagner, A. ^{[1
]}

Hoskins, J. ^{[3
]}

Martin, C. ^{[3
]}

Sullivan, N. S. ^{[3
]}

Tanner, D. B. ^{[3
]}

Bradley, R. ^{[4
]}

Clarke, John ^{[5
]}

机构：

[1] Univ Washington, Seattle, WA 98195 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[3] Univ Florida, Gainesville, FL 32611 USA

[4] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[5] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 656卷 / 01期

关键词：

Microwave cavity; SQUIDS; Axion; Dark matter; QUANTUM INTERFERENCE DEVICE; RADIOFREQUENCY-AMPLIFIER; INVISIBLE-AXION; LOW-NOISE; DETECTOR; SEARCH;

D O I：

10.1016/j.nima.2011.07.019

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Axion Dark Matter eXperiment (ADMX) was designed to detect ultra-weakly interacting relic axion particles by searching for their conversion to microwave photons in a resonant cavity positioned in a strong magnetic field. Given the extremely low expected axion-photon conversion power we have designed, built and operated a microwave receiver based on a Superconducting QUantum Interference Device (SQUID). We describe the ADMX receiver in detail as well as the analysis of narrow band microwave signals. We demonstrate the sustained use of a SQUID amplifier operating between 812 and 860 MHz with a noise temperature of 1 K. The receiver has a noise equivalent power of 1.1 x 10(-24) W/root Hz in the band of operation for an integration time of 1.8 X 10(3) s. Published by Elsevier B.V.

引用

页码：39 / 44

页数：6

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