Johnson noise in SQUID magnetometers

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138914· OSTI ID:6300819

Savicki, J P

Conducting tubes threading the pick-up coils in SQUID magnetometers may generate magnetic flux noise larger than the intrinsic SQUID noise. A method for calculating the level of this noise is presented which can aid in the design of low noise systems. Application to a system in this lab predicts a noise level of 0.001 fluxoids rms/(Hz) /sup //S, in good agreement with the observed level of 0.001 fluxoids rms in a 1-Hz bandwidth.

• Research Organization: Physics Department, The Pennsylvania State University, University Park, Pennsylvania 16802
• OSTI ID: 6300819
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 57:3; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DATA
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
FLUXMETERS
INFORMATION
MAGNET COILS
MAGNETIC FLUX
MAGNETOMETERS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NOISE
NUMERICAL DATA
SQUID DEVICES
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES