High time-resolved, 2D imaging of type-I ELMs in DIII-D using a image-intensified CID camera

M. Groth; M. E. Fenstermacher; J. A. Boedo; N. H. Brooks; D. S. Gray; C. J. Lasnier; A. W. Leonard; G. D. Porter; J. G. Watkins

doi:10.1016/S0022-3115(02)01539-8

High time-resolved, 2D imaging of type-I ELMs in DIII-D using a image-intensified CID camera

M. Groth^*, M. E. Fenstermacher, J. A. Boedo, N. H. Brooks, D. S. Gray, C. J. Lasnier, A. W. Leonard, G. D. Porter, J. G. Watkins

^*Corresponding author for this work

Not published at Aalto University

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

12 Citations (Scopus)

Abstract

The evolution of 2D emission profiles of D-alpha and C III during type-I edge localised modes (ELMs) has been investigated in DIII-D using a tangentially viewing gated, intensified charge-injected device (CID) camera. The measured CIII emission profiles indicate transient inner leg attachment with the arrival of the ELM heat pulse. The measured D-alpha emission profiles during an ELM cycle show enhanced deuterium recycling during the deposition of the ELM particle pulse at the target, which suggests the detachment of the divertor plasma from the target plates. Measurements taken in ELMy H-mode discharges at densities of 50% and 90% of the Greenwald density limit are compared utilising the CID camera system and a comprehensive set of other divertor diagnostics. An ELM models based on fluid and PIC simulations are used to discuss the observation on the response of the divertor plasma to the ELM heat and particle pulse.

Original language	English
Pages (from-to)	1071-1075
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	313-316
DOIs	https://doi.org/10.1016/S0022-3115(02)01539-8
Publication status	Published - Mar 2003
MoE publication type	A1 Journal article-refereed

Keywords

Divertor
ELM evolution
Line emission profiles
Plasma imaging

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10.1016/S0022-3115(02)01539-8

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@article{b79b6dbf10c24911813dace39fc2df0f,

title = "High time-resolved, 2D imaging of type-I ELMs in DIII-D using a image-intensified CID camera",

abstract = "The evolution of 2D emission profiles of D-alpha and C III during type-I edge localised modes (ELMs) has been investigated in DIII-D using a tangentially viewing gated, intensified charge-injected device (CID) camera. The measured CIII emission profiles indicate transient inner leg attachment with the arrival of the ELM heat pulse. The measured D-alpha emission profiles during an ELM cycle show enhanced deuterium recycling during the deposition of the ELM particle pulse at the target, which suggests the detachment of the divertor plasma from the target plates. Measurements taken in ELMy H-mode discharges at densities of 50% and 90% of the Greenwald density limit are compared utilising the CID camera system and a comprehensive set of other divertor diagnostics. An ELM models based on fluid and PIC simulations are used to discuss the observation on the response of the divertor plasma to the ELM heat and particle pulse.",

keywords = "Divertor, ELM evolution, Line emission profiles, Plasma imaging",

author = "M. Groth and Fenstermacher, {M. E.} and Boedo, {J. A.} and Brooks, {N. H.} and Gray, {D. S.} and Lasnier, {C. J.} and Leonard, {A. W.} and Porter, {G. D.} and Watkins, {J. G.}",

year = "2003",

month = mar,

doi = "10.1016/S0022-3115(02)01539-8",

language = "English",

volume = "313-316",

pages = "1071--1075",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - High time-resolved, 2D imaging of type-I ELMs in DIII-D using a image-intensified CID camera

AU - Groth, M.

AU - Fenstermacher, M. E.

AU - Boedo, J. A.

AU - Brooks, N. H.

AU - Gray, D. S.

AU - Lasnier, C. J.

AU - Leonard, A. W.

AU - Porter, G. D.

AU - Watkins, J. G.

PY - 2003/3

Y1 - 2003/3

N2 - The evolution of 2D emission profiles of D-alpha and C III during type-I edge localised modes (ELMs) has been investigated in DIII-D using a tangentially viewing gated, intensified charge-injected device (CID) camera. The measured CIII emission profiles indicate transient inner leg attachment with the arrival of the ELM heat pulse. The measured D-alpha emission profiles during an ELM cycle show enhanced deuterium recycling during the deposition of the ELM particle pulse at the target, which suggests the detachment of the divertor plasma from the target plates. Measurements taken in ELMy H-mode discharges at densities of 50% and 90% of the Greenwald density limit are compared utilising the CID camera system and a comprehensive set of other divertor diagnostics. An ELM models based on fluid and PIC simulations are used to discuss the observation on the response of the divertor plasma to the ELM heat and particle pulse.

AB - The evolution of 2D emission profiles of D-alpha and C III during type-I edge localised modes (ELMs) has been investigated in DIII-D using a tangentially viewing gated, intensified charge-injected device (CID) camera. The measured CIII emission profiles indicate transient inner leg attachment with the arrival of the ELM heat pulse. The measured D-alpha emission profiles during an ELM cycle show enhanced deuterium recycling during the deposition of the ELM particle pulse at the target, which suggests the detachment of the divertor plasma from the target plates. Measurements taken in ELMy H-mode discharges at densities of 50% and 90% of the Greenwald density limit are compared utilising the CID camera system and a comprehensive set of other divertor diagnostics. An ELM models based on fluid and PIC simulations are used to discuss the observation on the response of the divertor plasma to the ELM heat and particle pulse.

KW - Divertor

KW - ELM evolution

KW - Line emission profiles

KW - Plasma imaging

UR - http://www.scopus.com/inward/record.url?scp=0037346742&partnerID=8YFLogxK

U2 - 10.1016/S0022-3115(02)01539-8

DO - 10.1016/S0022-3115(02)01539-8

M3 - Article

AN - SCOPUS:0037346742

SN - 0022-3115

VL - 313-316

SP - 1071

EP - 1075

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

High time-resolved, 2D imaging of type-I ELMs in DIII-D using a image-intensified CID camera

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Keywords

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