Correlation electron cyclotron emission diagnostic and improved calculation of turbulent temperature fluctuation levels on ASDEX Upgrade
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 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.
| Errataetall: |
ErratumIn: Rev Sci Instrum. 2018 Nov;89(11):119901. - PMID 30501288 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:89 |
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| Enthalten in: |
The Review of scientific instruments - 89(2018), 5 vom: 04. Mai, Seite 053503 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Creely, A J [VerfasserIn] |
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| Anmerkungen: |
Date Completed 05.06.2018 Date Revised 05.06.2018 published: Print ErratumIn: Rev Sci Instrum. 2018 Nov;89(11):119901. - PMID 30501288 Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1063/1.5005507 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM285099728 |
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| 500 | |a ErratumIn: Rev Sci Instrum. 2018 Nov;89(11):119901. - PMID 30501288 | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a 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 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 | ||
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| 700 | 1 | |a Leccacorvi, R |e verfasserin |4 aut | |
| 700 | 1 | |a Parkin, W C |e verfasserin |4 aut | |
| 700 | 1 | |a Terry, D R |e verfasserin |4 aut | |
| 700 | 1 | |a White, A E |e verfasserin |4 aut | |
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