Pedestal conditions for small ELM regimes in tokamaks

N. Oyama; P. Gohil; L. D. Horton; A. E. Hubbard; J. W. Hughes; Y. Kamada; K. Kamiya; A. W. Leonard; A. Loarte; R. Maingi; G. Saibene; R. Sartori; J. K. Stober; W. Suttrop; H. Urano; W. P. West

doi:10.1088/0741-3335/48/5A/S16

Pedestal conditions for small ELM regimes in tokamaks

N. Oyama
, P. Gohil
, L. D. Horton
, A. E. Hubbard
, J. W. Hughes
, Y. Kamada
, K. Kamiya
, A. W. Leonard
, A. Loarte
, R. Maingi
, G. Saibene
, R. Sartori
, J. K. Stober
, W. Suttrop
, H. Urano
, W. P. West

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

Abstract

Several small/no ELM regimes such as EDA, grassy ELM, HRS, QH-mode, type II and V ELMs with good confinement properties have been obtained in Alcator C-Mod, ASDEX-Upgrade, DIII-D, JET, JFT-2M, JT-60U and NSTX. All these regimes show considerable reduction of instantaneous ELM heat load onto divertor target plates in contrast to conventional type I ELM, and ELM energy losses are evaluated as less than 5% of the pedestal stored energy. These small/no ELM regimes are summarized and widely categorized by their pedestal conditions in terms of the operational space in non-dimensional pedestal parameters and requirement of plasma shape/configuration. The characteristics of edge fluctuations and activities of ideal MHD stability leading to small/no ELMs are also summarized.

Original language	American English
Pages (from-to)	A171-A181
Journal	Plasma Physics and Controlled Fusion
Volume	48
Issue number	5 A
DOIs	https://doi.org/10.1088/0741-3335/48/5A/S16
State	Published - May 2006
Externally published	Yes

ASJC Scopus subject areas

Nuclear Energy and Engineering
Condensed Matter Physics

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Oyama, N., Gohil, P., Horton, L. D., Hubbard, A. E., Hughes, J. W., Kamada, Y., Kamiya, K., Leonard, A. W., Loarte, A., Maingi, R., Saibene, G., Sartori, R., Stober, J. K., Suttrop, W., Urano, H., & West, W. P. (2006). Pedestal conditions for small ELM regimes in tokamaks. Plasma Physics and Controlled Fusion, 48(5 A), A171-A181. https://doi.org/10.1088/0741-3335/48/5A/S16

@article{42e0f5c9f0704d0e989dc944b2808a19,

title = "Pedestal conditions for small ELM regimes in tokamaks",

abstract = "Several small/no ELM regimes such as EDA, grassy ELM, HRS, QH-mode, type II and V ELMs with good confinement properties have been obtained in Alcator C-Mod, ASDEX-Upgrade, DIII-D, JET, JFT-2M, JT-60U and NSTX. All these regimes show considerable reduction of instantaneous ELM heat load onto divertor target plates in contrast to conventional type I ELM, and ELM energy losses are evaluated as less than 5\% of the pedestal stored energy. These small/no ELM regimes are summarized and widely categorized by their pedestal conditions in terms of the operational space in non-dimensional pedestal parameters and requirement of plasma shape/configuration. The characteristics of edge fluctuations and activities of ideal MHD stability leading to small/no ELMs are also summarized.",

author = "N. Oyama and P. Gohil and Horton, \{L. D.\} and Hubbard, \{A. E.\} and Hughes, \{J. W.\} and Y. Kamada and K. Kamiya and Leonard, \{A. W.\} and A. Loarte and R. Maingi and G. Saibene and R. Sartori and Stober, \{J. K.\} and W. Suttrop and H. Urano and West, \{W. P.\}",

year = "2006",

month = may,

doi = "10.1088/0741-3335/48/5A/S16",

language = "American English",

volume = "48",

pages = "A171--A181",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

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number = "5 A",

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TY - JOUR

T1 - Pedestal conditions for small ELM regimes in tokamaks

AU - Oyama, N.

AU - Gohil, P.

AU - Horton, L. D.

AU - Hubbard, A. E.

AU - Hughes, J. W.

AU - Kamada, Y.

AU - Kamiya, K.

AU - Leonard, A. W.

AU - Loarte, A.

AU - Maingi, R.

AU - Saibene, G.

AU - Sartori, R.

AU - Stober, J. K.

AU - Suttrop, W.

AU - Urano, H.

AU - West, W. P.

PY - 2006/5

Y1 - 2006/5

N2 - Several small/no ELM regimes such as EDA, grassy ELM, HRS, QH-mode, type II and V ELMs with good confinement properties have been obtained in Alcator C-Mod, ASDEX-Upgrade, DIII-D, JET, JFT-2M, JT-60U and NSTX. All these regimes show considerable reduction of instantaneous ELM heat load onto divertor target plates in contrast to conventional type I ELM, and ELM energy losses are evaluated as less than 5% of the pedestal stored energy. These small/no ELM regimes are summarized and widely categorized by their pedestal conditions in terms of the operational space in non-dimensional pedestal parameters and requirement of plasma shape/configuration. The characteristics of edge fluctuations and activities of ideal MHD stability leading to small/no ELMs are also summarized.

AB - Several small/no ELM regimes such as EDA, grassy ELM, HRS, QH-mode, type II and V ELMs with good confinement properties have been obtained in Alcator C-Mod, ASDEX-Upgrade, DIII-D, JET, JFT-2M, JT-60U and NSTX. All these regimes show considerable reduction of instantaneous ELM heat load onto divertor target plates in contrast to conventional type I ELM, and ELM energy losses are evaluated as less than 5% of the pedestal stored energy. These small/no ELM regimes are summarized and widely categorized by their pedestal conditions in terms of the operational space in non-dimensional pedestal parameters and requirement of plasma shape/configuration. The characteristics of edge fluctuations and activities of ideal MHD stability leading to small/no ELMs are also summarized.

UR - https://www.scopus.com/pages/publications/33751567758

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U2 - 10.1088/0741-3335/48/5A/S16

DO - 10.1088/0741-3335/48/5A/S16

M3 - Article

SN - 0741-3335

VL - 48

SP - A171-A181

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5 A

ER -

Pedestal conditions for small ELM regimes in tokamaks

Abstract

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