Post calibration of the two-dimensional electron cyclotron emission imaging instrument with electron temperature characteristics of the magnetohydrodynamic instabilities

M. J. Choi; H. K. Park; G. S. Yun; Y. B. Nam; G. H. Choe; W. Lee; S. Jardin

doi:10.1063/1.4940030

Post calibration of the two-dimensional electron cyclotron emission imaging instrument with electron temperature characteristics of the magnetohydrodynamic instabilities

M. J. Choi
, H. K. Park
, G. S. Yun
, Y. B. Nam
, G. H. Choe
, W. Lee
, S. Jardin

PPPL Theory

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The electron cyclotron emission imaging (ECEI) instrument is widely used to study the local electron temperature (T_e) fluctuations by measuring the ECE intensity I_ECE - T_e in tokamak plasmas. The ECEI measurement is often processed in a normalized fluctuation quantity against the time averaged value due to complication in absolute calibration. In this paper, the ECEI channels are relatively calibrated using the flat T_e assumption of the sawtooth crash or the tearing mode island and a proper extrapolation. The 2-D relatively calibrated electron temperature (T_e,rel) images are reconstructed and the displacement amplitude of the magnetohydrodynamic modes can be measured for the accurate quantitative growth analysis.

Original language	English (US)
Article number	013506
Journal	Review of Scientific Instruments
Volume	87
Issue number	1
DOIs	https://doi.org/10.1063/1.4940030
State	Published - Jan 1 2016

All Science Journal Classification (ASJC) codes

Instrumentation

Access to Document

10.1063/1.4940030

Cite this

@article{95faebac22bc4408bde18c85087f16d1,

title = "Post calibration of the two-dimensional electron cyclotron emission imaging instrument with electron temperature characteristics of the magnetohydrodynamic instabilities",

abstract = "The electron cyclotron emission imaging (ECEI) instrument is widely used to study the local electron temperature (Te) fluctuations by measuring the ECE intensity IECE - Te in tokamak plasmas. The ECEI measurement is often processed in a normalized fluctuation quantity against the time averaged value due to complication in absolute calibration. In this paper, the ECEI channels are relatively calibrated using the flat Te assumption of the sawtooth crash or the tearing mode island and a proper extrapolation. The 2-D relatively calibrated electron temperature (Te,rel) images are reconstructed and the displacement amplitude of the magnetohydrodynamic modes can be measured for the accurate quantitative growth analysis.",

author = "Choi, \{M. J.\} and Park, \{H. K.\} and Yun, \{G. S.\} and Nam, \{Y. B.\} and Choe, \{G. H.\} and W. Lee and S. Jardin",

note = "Publisher Copyright: {\textcopyright} 2016 AIP Publishing LLC.",

year = "2016",

month = jan,

day = "1",

doi = "10.1063/1.4940030",

language = "English (US)",

volume = "87",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "1",

}

TY - JOUR

T1 - Post calibration of the two-dimensional electron cyclotron emission imaging instrument with electron temperature characteristics of the magnetohydrodynamic instabilities

AU - Choi, M. J.

AU - Park, H. K.

AU - Yun, G. S.

AU - Nam, Y. B.

AU - Choe, G. H.

AU - Lee, W.

AU - Jardin, S.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The electron cyclotron emission imaging (ECEI) instrument is widely used to study the local electron temperature (Te) fluctuations by measuring the ECE intensity IECE - Te in tokamak plasmas. The ECEI measurement is often processed in a normalized fluctuation quantity against the time averaged value due to complication in absolute calibration. In this paper, the ECEI channels are relatively calibrated using the flat Te assumption of the sawtooth crash or the tearing mode island and a proper extrapolation. The 2-D relatively calibrated electron temperature (Te,rel) images are reconstructed and the displacement amplitude of the magnetohydrodynamic modes can be measured for the accurate quantitative growth analysis.

AB - The electron cyclotron emission imaging (ECEI) instrument is widely used to study the local electron temperature (Te) fluctuations by measuring the ECE intensity IECE - Te in tokamak plasmas. The ECEI measurement is often processed in a normalized fluctuation quantity against the time averaged value due to complication in absolute calibration. In this paper, the ECEI channels are relatively calibrated using the flat Te assumption of the sawtooth crash or the tearing mode island and a proper extrapolation. The 2-D relatively calibrated electron temperature (Te,rel) images are reconstructed and the displacement amplitude of the magnetohydrodynamic modes can be measured for the accurate quantitative growth analysis.

UR - https://www.scopus.com/pages/publications/84955451994

UR - https://www.scopus.com/pages/publications/84955451994#tab=citedBy

U2 - 10.1063/1.4940030

DO - 10.1063/1.4940030

M3 - Article

C2 - 26827320

AN - SCOPUS:84955451994

SN - 0034-6748

VL - 87

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 1

M1 - 013506

ER -

Post calibration of the two-dimensional electron cyclotron emission imaging instrument with electron temperature characteristics of the magnetohydrodynamic instabilities

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this