Geometric dependence of the energy confinement time scaling for H-mode discharges

Miura Y. Miura; Takizuka T. Takizuka; Tamai H. Tamai; Matsuda T. Matsuda; Suzuki N. Suzuki; Mori M. Mori; Maeda H. Maeda; Itoh K. Itoh; Itoh S.i. Itoh; Kardaun O.j.w.f. Kardaun

doi:10.1088/0029-5515/32/8/I15

Geometric dependence of the energy confinement time scaling for H-mode discharges

Miura Y. Miura, Takizuka T. Takizuka, Tamai H. Tamai, Matsuda T. Matsuda, Suzuki N. Suzuki, Mori M. Mori, Maeda H. Maeda, Itoh K. Itoh, Itoh S.i. Itoh, Kardaun O.j.w.f. Kardaun

Division of Nuclear Fusion Dynamics

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

11 Citations (Scopus)

Abstract

The dependence of the H-mode energy confinement time τ_E on the plasma elongation and the divertor configuration is studied. A regression analysis of the H-mode database is presented in which the dependence on the closed/open divertor configuration, estimated from the ASDEX experiments, is included. The dependence of τ_E on the elongation factor k is found to be positive (approximately k^0.6) for ELM-free H-mode discharges, in accordance with experimental results for ELM-free limiter H-mode plasmas in JFT-2M. In addition, the influence of the X-point configuration (single null or double null) on the confinement time is briefly addressed.

Original language	English
Article number	I15
Pages (from-to)	1473-1479
Number of pages	7
Journal	Nuclear Fusion
Volume	32
Issue number	8
DOIs	https://doi.org/10.1088/0029-5515/32/8/I15
Publication status	Published - 1992

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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10.1088/0029-5515/32/8/I15

Cite this

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title = "Geometric dependence of the energy confinement time scaling for H-mode discharges",

abstract = "The dependence of the H-mode energy confinement time τE on the plasma elongation and the divertor configuration is studied. A regression analysis of the H-mode database is presented in which the dependence on the closed/open divertor configuration, estimated from the ASDEX experiments, is included. The dependence of τE on the elongation factor k is found to be positive (approximately k0.6) for ELM-free H-mode discharges, in accordance with experimental results for ELM-free limiter H-mode plasmas in JFT-2M. In addition, the influence of the X-point configuration (single null or double null) on the confinement time is briefly addressed.",

author = "{Y. Miura}, Miura and {T. Takizuka}, Takizuka and {H. Tamai}, Tamai and {T. Matsuda}, Matsuda and {N. Suzuki}, Suzuki and {M. Mori}, Mori and {H. Maeda}, Maeda and {K. Itoh}, Itoh and {S.i. Itoh}, Itoh and {O.j.w.f. Kardaun}, Kardaun",

year = "1992",

doi = "10.1088/0029-5515/32/8/I15",

language = "English",

volume = "32",

pages = "1473--1479",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing Ltd.",

number = "8",

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TY - JOUR

T1 - Geometric dependence of the energy confinement time scaling for H-mode discharges

AU - Y. Miura, Miura

AU - T. Takizuka, Takizuka

AU - H. Tamai, Tamai

AU - T. Matsuda, Matsuda

AU - N. Suzuki, Suzuki

AU - M. Mori, Mori

AU - H. Maeda, Maeda

AU - K. Itoh, Itoh

AU - S.i. Itoh, Itoh

AU - O.j.w.f. Kardaun, Kardaun

PY - 1992

Y1 - 1992

N2 - The dependence of the H-mode energy confinement time τE on the plasma elongation and the divertor configuration is studied. A regression analysis of the H-mode database is presented in which the dependence on the closed/open divertor configuration, estimated from the ASDEX experiments, is included. The dependence of τE on the elongation factor k is found to be positive (approximately k0.6) for ELM-free H-mode discharges, in accordance with experimental results for ELM-free limiter H-mode plasmas in JFT-2M. In addition, the influence of the X-point configuration (single null or double null) on the confinement time is briefly addressed.

AB - The dependence of the H-mode energy confinement time τE on the plasma elongation and the divertor configuration is studied. A regression analysis of the H-mode database is presented in which the dependence on the closed/open divertor configuration, estimated from the ASDEX experiments, is included. The dependence of τE on the elongation factor k is found to be positive (approximately k0.6) for ELM-free H-mode discharges, in accordance with experimental results for ELM-free limiter H-mode plasmas in JFT-2M. In addition, the influence of the X-point configuration (single null or double null) on the confinement time is briefly addressed.

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DO - 10.1088/0029-5515/32/8/I15

M3 - Article

AN - SCOPUS:0026910705

SN - 0029-5515

VL - 32

SP - 1473

EP - 1479

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 8

M1 - I15

ER -

Geometric dependence of the energy confinement time scaling for H-mode discharges

Abstract

All Science Journal Classification (ASJC) codes

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