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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:
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  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Publication Date:
DOE Contract Number:  
AC02-09CH11466
Product Type:
Dataset
Research Org.:
Portsmouth Gaseous Diffusion Plant, Piketon, OH (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; NSTX-U Density Interferometry FIReTIP
Keywords:
NSTX-U Density Interferometry FIReTIP
OSTI Identifier:
1367157
DOI:
10.11578/1367157

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:10.11578/1367157.
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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. doi:10.11578/1367157.
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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. 2016. "Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U". United States. doi:10.11578/1367157. https://www.osti.gov/servlets/purl/1367157. Pub date:Tue Nov 01 00:00:00 EDT 2016
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@article{osti_1367157,
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 = {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 = {10.11578/1367157},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {11}
}
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DOI: 10.11578/1367157
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