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

Abstract

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];  [2]; ; ; ;  [3];  [4]; ;  [5]
  1. Department of Mechanical and Aerospace Engineering, University of California, Davis, California 95616 (United States)
  2. Department of Applied Science, University of California, Davis, California 95616 (United States)
  3. Department of Electrical and Computer Engineering, University of California, Davis, California 95616 (United States)
  4. General Atomics, San Diego, California 92121 (United States)
  5. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540 (United States)
Publication Date:
OSTI Identifier:
22596543
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CONTROL SYSTEMS; ELECTRON DENSITY; ELECTRONS; FEEDBACK; INTERFEROMETERS; NSTX DEVICE; OPTICS; PLASMA; POLARIMETERS; SIGNALS; SPHERICAL CONFIGURATION; VISIBLE RADIATION

Citation Formats

Scott, E. R., E-mail: evrscott@ucdavis.edu, Barchfeld, R., Riemenschneider, P., Domier, C. W., Sohrabi, M., Luhmann, N. C., Muscatello, C. M., Kaita, R., and Ren, Y. Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U. United States: N. p., 2016. Web. doi:10.1063/1.4960415.
Scott, E. R., E-mail: evrscott@ucdavis.edu, Barchfeld, R., Riemenschneider, P., Domier, C. W., Sohrabi, M., Luhmann, N. C., Muscatello, C. M., Kaita, R., & Ren, Y. Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U. United States. doi:10.1063/1.4960415.
Scott, E. R., E-mail: evrscott@ucdavis.edu, Barchfeld, R., Riemenschneider, P., Domier, C. W., Sohrabi, M., Luhmann, N. C., Muscatello, C. M., Kaita, R., and Ren, Y. Tue . "Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U". United States. doi:10.1063/1.4960415.
@article{osti_22596543,
title = {Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U},
author = {Scott, E. R., E-mail: evrscott@ucdavis.edu and Barchfeld, R. and Riemenschneider, P. and Domier, C. W. and Sohrabi, M. and Luhmann, N. C. and Muscatello, C. M. and Kaita, R. and Ren, Y.},
abstractNote = {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 Nov 15 00:00:00 EST 2016},
month = {Tue Nov 15 00:00:00 EST 2016}
}