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Title: Precision metrology of NSTX surfaces using coherent laser radar ranging

Abstract

A frequency modulated Coherent Laser Radar ranging diagnostic is being used on the National Spherical Torus Experiment (NSTX) for precision metrology. The distance (range) between the 1.5 {mu}m laser source and the target is measured by the shift in frequency of the linearly modulated beam reflected off the target. The range can be measured to a precision of <100 {mu}m at distances of up to 22 m. A description is given of the geometry and procedure for measuring NSTX interior and exterior surfaces during open vessel conditions, and the results of measurements are elaborated.

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40204832
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 72; Journal Issue: 1; Other Information: Othernumber: RSINAK000072000001000533000001; 526101CON; PBD: Jan 2001; Journal ID: ISSN 0034-6748
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; GEOMETRY; LASERS; RADAR; TARGETS

Citation Formats

Kugel, H W, Loesser, D, Roquemore, A L, Menon, M M, and Barry, R E. Precision metrology of NSTX surfaces using coherent laser radar ranging. United States: N. p., 2001. Web. doi:10.1063/1.1310586.
Kugel, H W, Loesser, D, Roquemore, A L, Menon, M M, & Barry, R E. Precision metrology of NSTX surfaces using coherent laser radar ranging. United States. doi:10.1063/1.1310586.
Kugel, H W, Loesser, D, Roquemore, A L, Menon, M M, and Barry, R E. Mon . "Precision metrology of NSTX surfaces using coherent laser radar ranging". United States. doi:10.1063/1.1310586.
@article{osti_40204832,
title = {Precision metrology of NSTX surfaces using coherent laser radar ranging},
author = {Kugel, H W and Loesser, D and Roquemore, A L and Menon, M M and Barry, R E},
abstractNote = {A frequency modulated Coherent Laser Radar ranging diagnostic is being used on the National Spherical Torus Experiment (NSTX) for precision metrology. The distance (range) between the 1.5 {mu}m laser source and the target is measured by the shift in frequency of the linearly modulated beam reflected off the target. The range can be measured to a precision of <100 {mu}m at distances of up to 22 m. A description is given of the geometry and procedure for measuring NSTX interior and exterior surfaces during open vessel conditions, and the results of measurements are elaborated.},
doi = {10.1063/1.1310586},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 1,
volume = 72,
place = {United States},
year = {2001},
month = {1}
}