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Expression for the thermal H-mode energy confinement time under ELM-free conditions

Abstract

The design of future tokamaks, which are supposed to reach ignition with the H-mode, requires a reliable scaling expression for the H-mode energy confinement time. In the present work, an H-mode scaling expression for the thermal plasma energy confinement time has been developed by combining data from four existing divertor tokamaks, ASDEX, DIII-D, JET and PBX-M. The plasma conditions, which were as similar as possible to ensure a coherent set of data, were ELM-free deuterium discharges heated by deuterium neutral beam injection. By combining four tokamaks, the parametric dependence of the thermal energy confinement on the main plasma parameters, including the three main geometrical variables, was determined. (orig./WL).
Authors:
Ryter, F; Gruber, O; Kardaun, O J.W.F.; Menzler, H P; Wagner, F; [1]  Schissel, D P; DeBoo, J C; [2]  Kaye, S M; [3]  ASDEX Team; NI Team; DIII-D Team; PBX-M Team
  1. Max-Planck-Institut fuer Plasmaphysik, Garching (Germany)
  2. General Atomics, San Diego, CA (United States)
  3. Princeton Plasma Physics Lab., NJ (United States)
Publication Date:
Jul 01, 1992
Product Type:
Technical Report
Report Number:
IPP-4/257
Reference Number:
SCA: 700350; PA: DEN-93:001219; SN: 93000938401
Resource Relation:
Other Information: PBD: Jul 1992
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; H-MODE PLASMA CONFINEMENT; CONFINEMENT TIME; TOKAMAK DEVICES; DIVERTORS; NEUTRAL ATOM BEAM INJECTION; 700350; PLASMA PRODUCTION, HEATING, CURRENT DRIVE, AND INTERACTIONS
OSTI ID:
10124249
Research Organizations:
Max-Planck-Institut fuer Plasmaphysik, Garching (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ON: DE93766168; TRN: DE9301219
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
28 p.
Announcement Date:
Jul 04, 2005

Citation Formats

Ryter, F, Gruber, O, Kardaun, O J.W.F., Menzler, H P, Wagner, F, Schissel, D P, DeBoo, J C, Kaye, S M, ASDEX Team, NI Team, DIII-D Team, and PBX-M Team. Expression for the thermal H-mode energy confinement time under ELM-free conditions. Germany: N. p., 1992. Web.
Ryter, F, Gruber, O, Kardaun, O J.W.F., Menzler, H P, Wagner, F, Schissel, D P, DeBoo, J C, Kaye, S M, ASDEX Team, NI Team, DIII-D Team, & PBX-M Team. Expression for the thermal H-mode energy confinement time under ELM-free conditions. Germany.
Ryter, F, Gruber, O, Kardaun, O J.W.F., Menzler, H P, Wagner, F, Schissel, D P, DeBoo, J C, Kaye, S M, ASDEX Team, NI Team, DIII-D Team, and PBX-M Team. 1992. "Expression for the thermal H-mode energy confinement time under ELM-free conditions." Germany.
@misc{etde_10124249,
title = {Expression for the thermal H-mode energy confinement time under ELM-free conditions}
author = {Ryter, F, Gruber, O, Kardaun, O J.W.F., Menzler, H P, Wagner, F, Schissel, D P, DeBoo, J C, Kaye, S M, ASDEX Team, NI Team, DIII-D Team, and PBX-M Team}
abstractNote = {The design of future tokamaks, which are supposed to reach ignition with the H-mode, requires a reliable scaling expression for the H-mode energy confinement time. In the present work, an H-mode scaling expression for the thermal plasma energy confinement time has been developed by combining data from four existing divertor tokamaks, ASDEX, DIII-D, JET and PBX-M. The plasma conditions, which were as similar as possible to ensure a coherent set of data, were ELM-free deuterium discharges heated by deuterium neutral beam injection. By combining four tokamaks, the parametric dependence of the thermal energy confinement on the main plasma parameters, including the three main geometrical variables, was determined. (orig./WL).}
place = {Germany}
year = {1992}
month = {Jul}
}