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

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

doi:10.1109/JSEN.2018.2816261

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

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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. Here, the sensors have survived radiation doses of 10 ⁹ Gy. Both measurement bandwidth and radiation tolerance of the sensors are an order of magnitude higher than their commercial counterparts.

Authors:

^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Thu Mar 15 00:00:00 EDT 2018

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1506819

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Sensors Journal

Additional Journal Information:: Journal Volume: 18; Journal Issue: 9; Journal ID: ISSN 1530-437X

Publisher:: IEEE

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Optical fiber sensors; Optical fiber cables; Optical fibers; Mercury (planets); Optical interferometry

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                    Liu, Yun, Blokland, Willem, Long, Cary D., Riemer, Bernard W., Wendel, Mark W., and Winder, Drew E. Strain Measurement in the Spallation Target Using High-Radiation-Tolerant Fiber Sensors.  United States: N. p., 2018. 
Web.  doi:10.1109/JSEN.2018.2816261.

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                    Liu, Yun, Blokland, Willem, Long, Cary D., Riemer, Bernard W., Wendel, Mark W., & Winder, Drew E. Strain Measurement in the Spallation Target Using High-Radiation-Tolerant Fiber Sensors.  United States.  https://doi.org/10.1109/JSEN.2018.2816261

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                    Liu, Yun, Blokland, Willem, Long, Cary D., Riemer, Bernard W., Wendel, Mark W., and Winder, Drew E. Thu .  
"Strain Measurement in the Spallation Target Using High-Radiation-Tolerant Fiber Sensors".  United States.  https://doi.org/10.1109/JSEN.2018.2816261.  https://www.osti.gov/servlets/purl/1506819.

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@article{osti_1506819,

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

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

  abstractNote = {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. Here, the sensors have survived radiation doses of 10 9 Gy. Both measurement bandwidth and radiation tolerance of the sensors are an order of magnitude higher than their commercial counterparts.},

  doi          = {10.1109/JSEN.2018.2816261},

  journal      = {IEEE Sensors Journal},

  number       = 9,

  volume       = 18,

  place        = {United States},

  year         = {Thu Mar 15 00:00:00 EDT 2018},

  month        = {Thu Mar 15 00:00:00 EDT 2018}

}

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