A Fiber Optics Sensor for Strain and Stress Measurements in Superconducting Accelerator Magnets

H. van Oort; H.H.J. ten Kate

doi:10.1109/20.305811

A Fiber Optics Sensor for Strain and Stress Measurements in Superconducting Accelerator Magnets

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

A novel cryogenic interferometric fiber optics sensor for the measurement of strain and stress in the coil windings of superconducting accelerator magnets is described. The sensor can operate with two different readout sources, monochromatic laser light and white light respectively. The sensor head is built up as an extrinsic Fabry-Perot interferometer formed with two cleaved fiber surfaces, and can be mounted in several configurations. When read with laser light, the sensor is an extremely sensitive relative strain or temperature detector. When read with white light the absolute strain and pressure can be measured. Results are presented of tests in several configurations at 77 K and 4.2 K, both for the relative and absolute readout method, Finally, the possible use for quench localization using the temperature sensitivity is described.

Original language	English
Pages (from-to)	2260-4263
Number of pages	4
Journal	IEEE transactions on magnetics
Volume	30
DOIs	https://doi.org/10.1109/20.305811
Publication status	Published - 1994

Keywords

n/a OA procedure

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10.1109/20.305811

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title = "A Fiber Optics Sensor for Strain and Stress Measurements in Superconducting Accelerator Magnets",

abstract = "A novel cryogenic interferometric fiber optics sensor for the measurement of strain and stress in the coil windings of superconducting accelerator magnets is described. The sensor can operate with two different readout sources, monochromatic laser light and white light respectively. The sensor head is built up as an extrinsic Fabry-Perot interferometer formed with two cleaved fiber surfaces, and can be mounted in several configurations. When read with laser light, the sensor is an extremely sensitive relative strain or temperature detector. When read with white light the absolute strain and pressure can be measured. Results are presented of tests in several configurations at 77 K and 4.2 K, both for the relative and absolute readout method, Finally, the possible use for quench localization using the temperature sensitivity is described.",

keywords = "n/a OA procedure",

author = "\{van Oort\}, H. and \{ten Kate\}, H.H.J.",

year = "1994",

doi = "10.1109/20.305811",

language = "English",

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pages = "2260--4263",

journal = "IEEE transactions on magnetics",

issn = "0018-9464",

publisher = "IEEE",

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T1 - A Fiber Optics Sensor for Strain and Stress Measurements in Superconducting Accelerator Magnets

AU - van Oort, H.

AU - ten Kate, H.H.J.

PY - 1994

Y1 - 1994

N2 - A novel cryogenic interferometric fiber optics sensor for the measurement of strain and stress in the coil windings of superconducting accelerator magnets is described. The sensor can operate with two different readout sources, monochromatic laser light and white light respectively. The sensor head is built up as an extrinsic Fabry-Perot interferometer formed with two cleaved fiber surfaces, and can be mounted in several configurations. When read with laser light, the sensor is an extremely sensitive relative strain or temperature detector. When read with white light the absolute strain and pressure can be measured. Results are presented of tests in several configurations at 77 K and 4.2 K, both for the relative and absolute readout method, Finally, the possible use for quench localization using the temperature sensitivity is described.

AB - A novel cryogenic interferometric fiber optics sensor for the measurement of strain and stress in the coil windings of superconducting accelerator magnets is described. The sensor can operate with two different readout sources, monochromatic laser light and white light respectively. The sensor head is built up as an extrinsic Fabry-Perot interferometer formed with two cleaved fiber surfaces, and can be mounted in several configurations. When read with laser light, the sensor is an extremely sensitive relative strain or temperature detector. When read with white light the absolute strain and pressure can be measured. Results are presented of tests in several configurations at 77 K and 4.2 K, both for the relative and absolute readout method, Finally, the possible use for quench localization using the temperature sensitivity is described.

KW - n/a OA procedure

U2 - 10.1109/20.305811

DO - 10.1109/20.305811

M3 - Article

SN - 0018-9464

VL - 30

SP - 2260

EP - 4263

JO - IEEE transactions on magnetics

JF - IEEE transactions on magnetics

ER -

A Fiber Optics Sensor for Strain and Stress Measurements in Superconducting Accelerator Magnets

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