Two-Stage SQUID Amplifiers for Cryogenic Detector Readouts

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 991489
Amount: $599,829.00
Phase: Phase II
Program: SBIR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
862 Estates Dr., Los Alamos, NM, 87544
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robin Cantor
 President
 () -
 rcantor@starcryo.com
Business Contact
 Robin Cantor
Title: President
Phone: (505) 661-6481
Email: rcantor@starcryo.com
Research Institution
N/A
Abstract
This proposal describes an innovative two-stage SQUID-based amplifier and PC-based high-speed feedback electronics without flux modulation for low-impedance cryogenic detector readouts. The proposed amplifier consists of a sensitive input SQUID followed by a coherently modulated output SQUID array. The gain of the second stage is sufficient to allow the amplifier to be directly coupled to a room-temperature preamplifier, thereby eliminating the need for flux modulation and cooled impedance matching circuits and enabling wideband operation. The SQUIDs in the output array are damped to avoid resonances or distortions in the transfer characteristics, which improves the stability of the amplifier and simplifies operation, and enhances the large-signal bandwidth. All SQUID drive signals and loop parameters may be configured remotely via a Windows-based graphical user interface. Multi-channel configurations are supported. This effort directly benefits SEU programs and addresses specific needs for SQUID-based amplifiers for cryogenic detector readouts.

* Information listed above is at the time of submission. *

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