Gravity Probe B gyroscope readout system

doi:10.1088/0264-9381/32/22/224006

2015-11-17

PRE

DOI：10.1088/0264-9381/32/22/224006

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摘要

En 中文

We describe the Gravity Probe B London-moment readout system successfully used on-orbit to measure two gyroscope spin axis drift rates predicted by general relativity. The system couples the magnetic signal of a spinning niobium-coated rotor into a low noise superconducting quantum interference device. We describe the multi-layered magnetic shield needed to attenuate external fields that would otherwise degrade readout performance. We discuss the similar to 35 nrad/yr drift rate sensitivity that was achieved on-orbit.

Keyword:

Gravity Probe B

SQUID

general relativity

instrumentation

London moment

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期刊

Classical and Quantum Gravity

IF:

3.7

论文数:

1.3W

被引数:

3.0W

机构

Stanford University

学者数:

9.6W

论文数: 8.2W

被引数: 17.0W

king abdulaziz city for science & technology

学者数:

665

论文数: 504

被引数: 0

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