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Title: Physics design of the in-vessel collection optics for the ITER electron cyclotron emission diagnostic

Measurement of the electron cyclotron emission (ECE) is one of the primary diagnostics for electron temperature in ITER. In-vessel, in-vacuum, and quasi-optical antennas capture sufficient ECE to achieve large signal to noise with microsecond temporal resolution and high spatial resolution while maintaining polarization fidelity. Two similar systems are required. One views the plasma radially. The other is an oblique view. Both views can be used to measure the electron temperature, while the oblique is also sensitive to non-thermal distortion in the bulk electron distribution. The in-vacuum optics for both systems are subject to degradation as they have a direct view of the ITER plasma and will not be accessible for cleaning or replacement for extended periods. Here, blackbody radiation sources are provided for in situ calibration.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [1] ; ORCiD logo [3]
  1. The Univ. of Texas at Austin, Austin, TX (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Publication Date:
Grant/Contract Number:
AC02-09CH11466
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)
Research Org:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
OSTI Identifier:
1368412

Rowan, W. L., Houshmandyar, S., Phillips, P. E., Austin, M. E., Beno, J. H., Hubbard, A. E., Khodak, A., Ouroua, A., and Taylor, G.. Physics design of the in-vessel collection optics for the ITER electron cyclotron emission diagnostic. United States: N. p., Web. doi:10.1063/1.4960420.
Rowan, W. L., Houshmandyar, S., Phillips, P. E., Austin, M. E., Beno, J. H., Hubbard, A. E., Khodak, A., Ouroua, A., & Taylor, G.. Physics design of the in-vessel collection optics for the ITER electron cyclotron emission diagnostic. United States. doi:10.1063/1.4960420.
Rowan, W. L., Houshmandyar, S., Phillips, P. E., Austin, M. E., Beno, J. H., Hubbard, A. E., Khodak, A., Ouroua, A., and Taylor, G.. 2016. "Physics design of the in-vessel collection optics for the ITER electron cyclotron emission diagnostic". United States. doi:10.1063/1.4960420. https://www.osti.gov/servlets/purl/1368412.
@article{osti_1368412,
title = {Physics design of the in-vessel collection optics for the ITER electron cyclotron emission diagnostic},
author = {Rowan, W. L. and Houshmandyar, S. and Phillips, P. E. and Austin, M. E. and Beno, J. H. and Hubbard, A. E. and Khodak, A. and Ouroua, A. and Taylor, G.},
abstractNote = {Measurement of the electron cyclotron emission (ECE) is one of the primary diagnostics for electron temperature in ITER. In-vessel, in-vacuum, and quasi-optical antennas capture sufficient ECE to achieve large signal to noise with microsecond temporal resolution and high spatial resolution while maintaining polarization fidelity. Two similar systems are required. One views the plasma radially. The other is an oblique view. Both views can be used to measure the electron temperature, while the oblique is also sensitive to non-thermal distortion in the bulk electron distribution. The in-vacuum optics for both systems are subject to degradation as they have a direct view of the ITER plasma and will not be accessible for cleaning or replacement for extended periods. Here, blackbody radiation sources are provided for in situ calibration.},
doi = {10.1063/1.4960420},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {9}
}