A survey of calibration procedures for SQUID gradiometers

Ornelas, P H; Bruno, A C; Barbosa, C Hall; Lima, E Andrade; Ribeiro, P Costa

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A survey of calibration procedures for SQUID gradiometers

Ornelas, P H; Bruno, A C; Barbosa, C Hall; Lima, E Andrade; Ribeiro, P Costa2003

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AbstractAbstract

[en] The accuracy of three distinct experimental procedures for calibrating axial SQUID gradiometers has been compared, for the same gradiometer design and experimental setup. Each procedure employs a different field source, and a nonlinear least-squares optimization is used to fit the measured voltage to the theoretical field, thus determining Tesla/Volt calibration factors. We also studied the effect of noise and gradiometer imbalance on the accuracy of each procedure

Primary Subject

INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY (S46)

Source

S0953-2048(03)53446-7; Available online at http://stacks.iop.org/0953-2048/16/427/u30401.pdf or at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/; Country of input: International Atomic Energy Agency (IAEA)

Record Type

Journal Article

Journal

Superconductor Science and Technology; ISSN 0953-2048;

; CODEN SUSTEF; v. 16(4); p. 427-431

Country of publication

United Kingdom

Descriptors (DEI)

CALIBRATION, COMPARATIVE EVALUATIONS, ELECTRIC POTENTIAL, LEAST SQUARE FIT, OPTIMIZATION, SQUID DEVICES

Descriptors (DEC)

ELECTRONIC EQUIPMENT, EQUIPMENT, EVALUATION, FLUXMETERS, MATHEMATICAL SOLUTIONS, MAXIMUM-LIKELIHOOD FIT, MEASURING INSTRUMENTS, MICROWAVE EQUIPMENT, NUMERICAL SOLUTION, SUPERCONDUCTING DEVICES

LanguageLanguage

English

Reference NumberReference Number

34058312

INIS VolumeINIS Volume

INIS IssueINIS Issue

External URLExternal URL

http://stacks.iop.org/0953-2048/16/427/u30401.pdf, http://www.iop.org/

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