Design and first plasma measurements of the ITER-ECE prototype radiometer

Austin, M. E.; Brookman, M. W.; Rowan, W. L.; Danani, S.; Bryerton, E. W.; Dougherty, P.

doi:10.1063/1.4960163

Title: Design and first plasma measurements of the ITER-ECE prototype radiometer

Abstract

On ITER, second harmonic optically thick electron cyclotron emission (ECE) in the range of 220-340 GHz will supply the electron temperature (T_e). In order to investigate the requirements and capabilities prescribed for the ITER system, a prototype radiometer covering this frequency range has been developed by Virginia Diodes, Inc. The first plasma measurements with this instrument have been carried out on the DIII-D tokamak, with lab bench tests and measurements of third through fifth harmonic ECE from high T_e plasmas. At DIII-D the instrument shares the transmission line of the Michelson interferometer and can simultaneously acquire data. In our comparison of the ECE radiation temperature from the absolutely calibrated Michelson and the prototype receiver we show that the ITER radiometer provides accurate measurements of the millimeter radiation across the instrument band.

Authors:

Austin, M. E. ^[1];

^[1]; Rowan, W. L. ^[1]; Danani, S. ^[2]; Bryerton, E. W. ^[3]; Dougherty, P. ^[3]

Univ. of Texas, Austin, TX (United States). Inst. for Fusion Studies
ITER Organization, Gandhinagar (India). Inst. for Plasma Research
Virginia Diodes, Inc., Charlottesville, VA (United States)

Publication Date:: Tue Aug 09 00:00:00 EDT 2016

Research Org.:: General Atomics, San Diego, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1371880

Grant/Contract Number:: FC02-04ER54698; FG02-97ER54415; S013464-C

Resource Type:: Accepted Manuscript

Journal Name:: Review of Scientific Instruments

Additional Journal Information:: Journal Volume: 87; Journal Issue: 11; Related Information: M.E. Austin, M.W. Brookman, W.L. Rowan, S. Danani, E.W. Bryerton, and P. Dougherty, "Design and first plasma measurements of the ITER-ECE prototype radiometer", Rev. Sci. Instr. 87, 11E111 (2016); Journal ID: ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats


                    Austin, M. E., Brookman, M. W., Rowan, W. L., Danani, S., Bryerton, E. W., and Dougherty, P. Design and first plasma measurements of the ITER-ECE prototype radiometer.  United States: N. p., 2016. 
Web.  doi:10.1063/1.4960163.

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                    Austin, M. E., Brookman, M. W., Rowan, W. L., Danani, S., Bryerton, E. W., & Dougherty, P. Design and first plasma measurements of the ITER-ECE prototype radiometer.  United States.  https://doi.org/10.1063/1.4960163

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                    Austin, M. E., Brookman, M. W., Rowan, W. L., Danani, S., Bryerton, E. W., and Dougherty, P. Tue .  
"Design and first plasma measurements of the ITER-ECE prototype radiometer".  United States.  https://doi.org/10.1063/1.4960163.  https://www.osti.gov/servlets/purl/1371880.

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@article{osti_1371880,

  title        = {Design and first plasma measurements of the ITER-ECE prototype radiometer},

  author       = {Austin, M. E. and Brookman, M. W. and Rowan, W. L. and Danani, S. and Bryerton, E. W. and Dougherty, P.},

  abstractNote = {On ITER, second harmonic optically thick electron cyclotron emission (ECE) in the range of 220-340 GHz will supply the electron temperature (Te). In order to investigate the requirements and capabilities prescribed for the ITER system, a prototype radiometer covering this frequency range has been developed by Virginia Diodes, Inc. The first plasma measurements with this instrument have been carried out on the DIII-D tokamak, with lab bench tests and measurements of third through fifth harmonic ECE from high Te plasmas. At DIII-D the instrument shares the transmission line of the Michelson interferometer and can simultaneously acquire data. In our comparison of the ECE radiation temperature from the absolutely calibrated Michelson and the prototype receiver we show that the ITER radiometer provides accurate measurements of the millimeter radiation across the instrument band.},

  doi          = {10.1063/1.4960163},

  journal      = {Review of Scientific Instruments},

  number       = 11,

  volume       = 87,

  place        = {United States},

  year         = {Tue Aug 09 00:00:00 EDT 2016},

  month        = {Tue Aug 09 00:00:00 EDT 2016}

}

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Works referenced in this record:

Control and dissipation of runaway electron beams created during rapid shutdown experiments in DIII-D
journal, July 2013

Hollmann, E. M.; Austin, M. E.; Boedo, J. A.
Nuclear Fusion, Vol. 53, Issue 8
DOI: 10.1088/0029-5515/53/8/083004

High resolution electron cyclotron emission temperature profile and fluctuation diagnostic for Alcator C-Mod
journal, January 1999

Heard, J. W.; Watts, C.; Gandy, R. F.
Review of Scientific Instruments, Vol. 70, Issue 1
DOI: 10.1063/1.1149368

Works referencing / citing this record:

Electron cyclotron emission based q -profile measurement and concept for equilibrium reconstruction
journal, June 2019

Nelson, A. O.; Austin, M. E.; Kolemen, E.
Plasma Physics and Controlled Fusion, Vol. 61, Issue 8
DOI: 10.1088/1361-6587/ab24a4

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