"Using SQUIDs to Detect Charge in Cryogenic Germanium Detectors" by R. A. Moffatt, Blas Cabrera et al.
 

Using SQUIDs to Detect Charge in Cryogenic Germanium Detectors

Document Type

Article

Publication Date

2-23-2012

Publisher

Springer

Abstract

This paper describes an impedance matching network which allows charge impulses to be measured by a SQUID amplifier with an RMS charge noise of less than 100 e, assuming the SQUID amplifier has a current noise of 2 pA/√Hz, and the current pulse has a duration of about 1 μs or shorter. The component values are provided for an example system which has an RMS charge noise of 91 e, assuming all dissipative circuit elements are cooled to a temperature of 100 mK.

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