Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX Upgrade
Abstract
A newly upgraded correlation electron cyclotron emission (CECE) diagnostic has been installed on the ASDEX Upgrade tokamak and has begun to perform experimental measurements of electron temperature fluctuations. CECE diagnostics measure small amplitude electron temperature fluctuations by correlating closely spaced heterodyne radiometer channels. This upgrade expanded the system from six channels to thirty, allowing simultaneous measurement of fluctuation level radial profiles without repeat discharges, as well as opening up the possibility of measuring radial turbulent correlation lengths. Newly refined statistical techniques have been developed in order to accurately analyze the fluctuation data collected from the CECE system. This paper presents here the hardware upgrades for this system and the analysis techniques used to interpret the raw data, as well as measurements of fluctuation spectra and fluctuation level radial profiles.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). MIT Plasma Science and Fusion Center
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). MIT Plasma Science and Fusion Center; Max Planck Inst. for Plasma Physics, Garching (Germany)
- Max Planck Inst. for Plasma Physics, Garching (Germany)
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1526020
- Alternate Identifier(s):
- OSTI ID: 1436548
- Grant/Contract Number:
- SC0006419; SC0017381; 32 CFR 168a
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 89; Journal Issue: 5; Journal ID: ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Citation Formats
Creely, A. J., Freethy, S. J., Burke, W. M., Conway, G. D., Leccacorvi, R., Parkin, W. C., Terry, D. R., and White, A. E. Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX Upgrade. United States: N. p., 2018.
Web. doi:10.1063/1.5005507.
Creely, A. J., Freethy, S. J., Burke, W. M., Conway, G. D., Leccacorvi, R., Parkin, W. C., Terry, D. R., & White, A. E. Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX Upgrade. United States. https://doi.org/10.1063/1.5005507
Creely, A. J., Freethy, S. J., Burke, W. M., Conway, G. D., Leccacorvi, R., Parkin, W. C., Terry, D. R., and White, A. E. Wed .
"Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX Upgrade". United States. https://doi.org/10.1063/1.5005507. https://www.osti.gov/servlets/purl/1526020.
@article{osti_1526020,
title = {Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX Upgrade},
author = {Creely, A. J. and Freethy, S. J. and Burke, W. M. and Conway, G. D. and Leccacorvi, R. and Parkin, W. C. and Terry, D. R. and White, A. E.},
abstractNote = {A newly upgraded correlation electron cyclotron emission (CECE) diagnostic has been installed on the ASDEX Upgrade tokamak and has begun to perform experimental measurements of electron temperature fluctuations. CECE diagnostics measure small amplitude electron temperature fluctuations by correlating closely spaced heterodyne radiometer channels. This upgrade expanded the system from six channels to thirty, allowing simultaneous measurement of fluctuation level radial profiles without repeat discharges, as well as opening up the possibility of measuring radial turbulent correlation lengths. Newly refined statistical techniques have been developed in order to accurately analyze the fluctuation data collected from the CECE system. This paper presents here the hardware upgrades for this system and the analysis techniques used to interpret the raw data, as well as measurements of fluctuation spectra and fluctuation level radial profiles.},
doi = {10.1063/1.5005507},
journal = {Review of Scientific Instruments},
number = 5,
volume = 89,
place = {United States},
year = {Wed May 09 00:00:00 EDT 2018},
month = {Wed May 09 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
Erratum: “Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX upgrade” [Rev. Sci. Instrum. 89, 053503 (2018)]
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An eight-channel correlation electron cyclotron emission diagnostic for turbulent electron temperature fluctuation measurement in HL-2A tokamak
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