ECE-imaging of the H-mode pedestal

B.J. Tobias; M.E. Austin; J.E. Boom; K.H. Burrell; I.G.J. Classen; C.W. Domier; N.C. Luhmann; R. Nazikian; P.B. Snyder

doi:10.1063/1.4733742

ECE-imaging of the H-mode pedestal

B.J. Tobias, M.E. Austin, J.E. Boom, K.H. Burrell, I.G.J. Classen, C.W. Domier, N.C. Luhmann, R. Nazikian, P.B. Snyder

Science and Technology of Nuclear Fusion

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

34 Citations (Scopus)

180 Downloads (Pure)

Abstract

A synthetic diagnostic has been developed that reproduces the highly structured electron cyclotron emission (ECE) spectrum radiated from the edge region of H-mode discharges. The modeled dependence on local perturbations of the equilibrium plasma pressure allows for interpretation of ECE data for diagnosis of local quantities. Forward modeling of the diagnostic response in this region allows for improved mapping of the observed fluctuations to flux surfaces within the plasma, allowing for the poloidal mode number of coherent structures to be resolved. In addition, other spectral features that are dependent on both Te and ne contain information about pedestal structure and the electron energy distribution of localized phenomena, such as edge filaments arising during edge-localized mode (ELM) activity.

Original language	English
Article number	10E329
Pages (from-to)	10E329-1/6
Number of pages	6
Journal	Review of Scientific Instruments
Volume	83
Issue number	10
DOIs	https://doi.org/10.1063/1.4733742
Publication status	Published - 2012

Access to Document

10.1063/1.4733742

publishers versionFinal published version, 1.26 MB

Cite this

@article{c2de323de5d042deb16618133bb53bca,

title = "ECE-imaging of the H-mode pedestal",

abstract = "A synthetic diagnostic has been developed that reproduces the highly structured electron cyclotron emission (ECE) spectrum radiated from the edge region of H-mode discharges. The modeled dependence on local perturbations of the equilibrium plasma pressure allows for interpretation of ECE data for diagnosis of local quantities. Forward modeling of the diagnostic response in this region allows for improved mapping of the observed fluctuations to flux surfaces within the plasma, allowing for the poloidal mode number of coherent structures to be resolved. In addition, other spectral features that are dependent on both Te and ne contain information about pedestal structure and the electron energy distribution of localized phenomena, such as edge filaments arising during edge-localized mode (ELM) activity.",

author = "B.J. Tobias and M.E. Austin and J.E. Boom and K.H. Burrell and I.G.J. Classen and C.W. Domier and N.C. Luhmann and R. Nazikian and P.B. Snyder",

year = "2012",

doi = "10.1063/1.4733742",

language = "English",

volume = "83",

pages = "10E329--1/6",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "10",

}

TY - JOUR

T1 - ECE-imaging of the H-mode pedestal

AU - Tobias, B.J.

AU - Austin, M.E.

AU - Boom, J.E.

AU - Burrell, K.H.

AU - Classen, I.G.J.

AU - Domier, C.W.

AU - Luhmann, N.C.

AU - Nazikian, R.

AU - Snyder, P.B.

PY - 2012

Y1 - 2012

N2 - A synthetic diagnostic has been developed that reproduces the highly structured electron cyclotron emission (ECE) spectrum radiated from the edge region of H-mode discharges. The modeled dependence on local perturbations of the equilibrium plasma pressure allows for interpretation of ECE data for diagnosis of local quantities. Forward modeling of the diagnostic response in this region allows for improved mapping of the observed fluctuations to flux surfaces within the plasma, allowing for the poloidal mode number of coherent structures to be resolved. In addition, other spectral features that are dependent on both Te and ne contain information about pedestal structure and the electron energy distribution of localized phenomena, such as edge filaments arising during edge-localized mode (ELM) activity.

AB - A synthetic diagnostic has been developed that reproduces the highly structured electron cyclotron emission (ECE) spectrum radiated from the edge region of H-mode discharges. The modeled dependence on local perturbations of the equilibrium plasma pressure allows for interpretation of ECE data for diagnosis of local quantities. Forward modeling of the diagnostic response in this region allows for improved mapping of the observed fluctuations to flux surfaces within the plasma, allowing for the poloidal mode number of coherent structures to be resolved. In addition, other spectral features that are dependent on both Te and ne contain information about pedestal structure and the electron energy distribution of localized phenomena, such as edge filaments arising during edge-localized mode (ELM) activity.

U2 - 10.1063/1.4733742

DO - 10.1063/1.4733742

M3 - Article

C2 - 23126987

SN - 0034-6748

VL - 83

SP - 10E329-1/6

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 10

M1 - 10E329

ER -

ECE-imaging of the H-mode pedestal

Abstract

Access to Document

Fingerprint

Cite this