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Title: Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U

Abstract

Here, the Far-infrared Tangential Interferometer/Polarimeter (FIReTIP) system has been refurbished and is being reinstalled on the National Spherical Torus Experiment—Upgrade (NSTX-U) to supply real-time line-integrated core electron density measurements for use in the NSTX-U plasma control system (PCS) to facilitate real-time density feedback control of the NSTX-U plasma. Inclusion of a visible light heterodyne interferometer in the FIReTIP system allows for real-time vibration compensation due to movement of an internally mounted retroreflector and the FIReTIP front-end optics. Real-time signal correction is achieved through use of a National Instruments CompactRIO field-programmable gate array.

Authors:
 [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [2];  [1];  [3];  [3];  [1]
+ Show Author Affiliations
  1. Univ. of California, Davis, CA (United States)
  2. General Atomics, San Diego, CA (United States)
  3. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1372462
Grant/Contract Number:  
AC02-09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Scott, E. R., Barchfeld, R., Riemenschneider, P., Domier, C. W., Muscatello, C. M., Sohrabi, M., Kaita, R., Ren, Y., and Luhmann, Jr., N. C. Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U. United States: N. p., 2016. Web. doi:10.1063/1.4960415.
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Scott, E. R., Barchfeld, R., Riemenschneider, P., Domier, C. W., Muscatello, C. M., Sohrabi, M., Kaita, R., Ren, Y., & Luhmann, Jr., N. C. Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U. United States. https://doi.org/10.1063/1.4960415
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Scott, E. R., Barchfeld, R., Riemenschneider, P., Domier, C. W., Muscatello, C. M., Sohrabi, M., Kaita, R., Ren, Y., and Luhmann, Jr., N. C. Tue . "Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U". United States. https://doi.org/10.1063/1.4960415. https://www.osti.gov/servlets/purl/1372462.
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@article{osti_1372462,
title = {Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U},
author = {Scott, E. R. and Barchfeld, R. and Riemenschneider, P. and Domier, C. W. and Muscatello, C. M. and Sohrabi, M. and Kaita, R. and Ren, Y. and Luhmann, Jr., N. C.},
abstractNote = {Here, the Far-infrared Tangential Interferometer/Polarimeter (FIReTIP) system has been refurbished and is being reinstalled on the National Spherical Torus Experiment—Upgrade (NSTX-U) to supply real-time line-integrated core electron density measurements for use in the NSTX-U plasma control system (PCS) to facilitate real-time density feedback control of the NSTX-U plasma. Inclusion of a visible light heterodyne interferometer in the FIReTIP system allows for real-time vibration compensation due to movement of an internally mounted retroreflector and the FIReTIP front-end optics. Real-time signal correction is achieved through use of a National Instruments CompactRIO field-programmable gate array.},
doi = {10.1063/1.4960415},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {Tue Aug 09 00:00:00 EDT 2016},
month = {Tue Aug 09 00:00:00 EDT 2016}
}
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Publisher's Version of Record
https://doi.org/10.1063/1.4960415
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Works referenced in this record:

NSTX far infrared tangential interferometer/polarimeter electronics upgrade
journal, October 2010

  • Tsai, W. C.; Domier, C. W.; Lee, K. C.
  • Review of Scientific Instruments, Vol. 81, Issue 10
  • DOI: 10.1063/1.3485103

A Stark-tuned laser application for interferometry and polarimetry on the National Spherical Torus Experiment
journal, March 2003

  • Lee, K. C.; Domier, C. W.; Deng, B. H.
  • Review of Scientific Instruments, Vol. 74, Issue 3
  • DOI: 10.1063/1.1530352

Far infrared tangential interferometry/polarimetry on the National Spherical Tokamak Experiment
journal, January 1999

  • Park, H. K.; Domier, C. W.; Geck, W. R.
  • Review of Scientific Instruments, Vol. 70, Issue 1
  • DOI: 10.1063/1.1149364

Overview of the physics and engineering design of NSTX upgrade
journal, July 2012

Edge density fluctuation characterization in H-mode and polarimetry measurement via the FIReTIP system on NSTX
journal, October 2004

  • Lee, K. C.; Domier, C. W.; Johnson, M.
  • Review of Scientific Instruments, Vol. 75, Issue 10
  • DOI: 10.1063/1.1786644
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    Works referencing / citing this record:

    The high- k poloidal scattering system for NSTX-U
    journal, October 2018

    • Barchfeld, R.; Domier, C. W.; Ren, Y.
    • Review of Scientific Instruments, Vol. 89, Issue 10
    • DOI: 10.1063/1.5035410
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