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Title: Implementation of an in-vessel calibration light source for JET

Abstract

An in-vessel calibration light source (ICLS) has been implemented for remote use during extended shutdown periods of the Joint European Torus (JET). The ICLS facilitated the in situ calibration of optical diagnostics, which previously were performed when the diagnostics were removed from JET. Since the ICLS is used to calibrate diagnostics over the entire, exact optical path as used when plasma discharge data are measured, the ICLS calibration implicitly accounts for any vignetting losses in the JET vessel viewports in addition to the vacuum window transmission. At least ten diagnostic systems have benefited from the ICLS during the extended ITER-like wall shutdown of 2009-2011. Examples of the use of the ICLS in JET are given.

Authors:
 [1];  [2];  [2];  [3];  [2];  [4];  [5];  [5]
  1. ORNL
  2. Association EURATOM-CCFE, Abingdon, UK
  3. Oak Ridge National Laboratory (ORNL)
  4. Labsphere, Inc.
  5. EURATOM / UKAEA, UK
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1043947
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CALIBRATION; IMPLEMENTATION; LIGHT SOURCES; PLASMA; SHUTDOWN; diagnostic calibration JET plasma

Citation Formats

Biewer, Theodore M, Belcher, C, Hassall, I, Hillis, D L, Kaveney, G, Scharpf, D, Stamp, M F, and Zastrow, K-D. Implementation of an in-vessel calibration light source for JET. United States: N. p., 2012. Web. doi:10.1063/1.4729502.
Biewer, Theodore M, Belcher, C, Hassall, I, Hillis, D L, Kaveney, G, Scharpf, D, Stamp, M F, & Zastrow, K-D. Implementation of an in-vessel calibration light source for JET. United States. https://doi.org/10.1063/1.4729502
Biewer, Theodore M, Belcher, C, Hassall, I, Hillis, D L, Kaveney, G, Scharpf, D, Stamp, M F, and Zastrow, K-D. 2012. "Implementation of an in-vessel calibration light source for JET". United States. https://doi.org/10.1063/1.4729502.
@article{osti_1043947,
title = {Implementation of an in-vessel calibration light source for JET},
author = {Biewer, Theodore M and Belcher, C and Hassall, I and Hillis, D L and Kaveney, G and Scharpf, D and Stamp, M F and Zastrow, K-D},
abstractNote = {An in-vessel calibration light source (ICLS) has been implemented for remote use during extended shutdown periods of the Joint European Torus (JET). The ICLS facilitated the in situ calibration of optical diagnostics, which previously were performed when the diagnostics were removed from JET. Since the ICLS is used to calibrate diagnostics over the entire, exact optical path as used when plasma discharge data are measured, the ICLS calibration implicitly accounts for any vignetting losses in the JET vessel viewports in addition to the vacuum window transmission. At least ten diagnostic systems have benefited from the ICLS during the extended ITER-like wall shutdown of 2009-2011. Examples of the use of the ICLS in JET are given.},
doi = {10.1063/1.4729502},
url = {https://www.osti.gov/biblio/1043947}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 83,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2012},
month = {Sun Jan 01 00:00:00 EST 2012}
}