Strain Measurement in the Spallation Target Using High-Radiation-Tolerant Fiber Sensors

Yun Liu; Willem Blokland; Cary D. Long; Bernard W. Riemer; Mark W. Wendel; Drew E. Winder

doi:10.1109/JSEN.2018.2816261

Strain Measurement in the Spallation Target Using High-Radiation-Tolerant Fiber Sensors

Yun Liu, Willem Blokland, Cary D. Long, Bernard W. Riemer, Mark W. Wendel, Drew E. Winder

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

19 Scopus citations

Abstract

We describe the measurement of fast dynamic strains in the mercury target module of the spallation neutron source using customized high-radiation-tolerant fiber-optic strain sensors. The sensors are made from fluorine-doped single-mode optical fibers that demonstrated high radiation tolerance at 1300 nm. A digital phase demodulation scheme is employed in the signal interrogation system, which enables high bandwidth measurement and has an excellent adaptability to sensor output power fluctuations and sensor gap variations. Fast transient strain waveforms induced by high-energy, high-intensity proton pulses are successfully measured. The sensors have survived radiation doses of 10⁹ Gy. Both measurement bandwidth and radiation tolerance of the sensors are an order of magnitude higher than their commercial counterparts.

Original language	English
Pages (from-to)	3645-3653
Number of pages	9
Journal	IEEE Sensors Journal
Volume	18
Issue number	9
DOIs	https://doi.org/10.1109/JSEN.2018.2816261
State	Published - May 1 2018
Externally published	Yes

Keywords

Optical fiber sensors
nuclear
radiation effects
sensor systems and applications
strain measurement

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10.1109/JSEN.2018.2816261

Cite this

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title = "Strain Measurement in the Spallation Target Using High-Radiation-Tolerant Fiber Sensors",

abstract = "We describe the measurement of fast dynamic strains in the mercury target module of the spallation neutron source using customized high-radiation-tolerant fiber-optic strain sensors. The sensors are made from fluorine-doped single-mode optical fibers that demonstrated high radiation tolerance at 1300 nm. A digital phase demodulation scheme is employed in the signal interrogation system, which enables high bandwidth measurement and has an excellent adaptability to sensor output power fluctuations and sensor gap variations. Fast transient strain waveforms induced by high-energy, high-intensity proton pulses are successfully measured. The sensors have survived radiation doses of 109 Gy. Both measurement bandwidth and radiation tolerance of the sensors are an order of magnitude higher than their commercial counterparts.",

keywords = "Optical fiber sensors, nuclear, radiation effects, sensor systems and applications, strain measurement",

author = "Yun Liu and Willem Blokland and Long, {Cary D.} and Riemer, {Bernard W.} and Wendel, {Mark W.} and Winder, {Drew E.}",

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AU - Blokland, Willem

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AU - Wendel, Mark W.

AU - Winder, Drew E.

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AB - We describe the measurement of fast dynamic strains in the mercury target module of the spallation neutron source using customized high-radiation-tolerant fiber-optic strain sensors. The sensors are made from fluorine-doped single-mode optical fibers that demonstrated high radiation tolerance at 1300 nm. A digital phase demodulation scheme is employed in the signal interrogation system, which enables high bandwidth measurement and has an excellent adaptability to sensor output power fluctuations and sensor gap variations. Fast transient strain waveforms induced by high-energy, high-intensity proton pulses are successfully measured. The sensors have survived radiation doses of 109 Gy. Both measurement bandwidth and radiation tolerance of the sensors are an order of magnitude higher than their commercial counterparts.

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Strain Measurement in the Spallation Target Using High-Radiation-Tolerant Fiber Sensors

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Keywords

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