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High performance, long pulse, tokamak

Technical Report:

Abstract

The key design and performance characteristics of a proposed high performance, long pulse tokamak (HLT) are described. The main parameters of the machine are: major radius, 3.4 m; minor radius, 1.2 m; elongation, 2; maximum toroidal field on axis, 8.3 T; maximum plasma current, 20 MA. The discharge flat top length is 40 s for a plasma with a 20 MA inductively driven current at a toroidal field of 8.0 T, and 500 s for a discharge with a 7 MA non-inductively driven current at a field of 3.5 T. With HLT, the main physics issues for a fusion reactor can be assessed: plasma physics and plasma operation in the ignited and sub-ignited regimes; burn stabilization; behaviour of divertor components under long-pulse thermal loads; and semi-continuous operation with non-inductive current drive. The crucial element in obtaining this level of performance in a machine of medium size is the use of active cooling with liquid nitrogen both for the toroidal field coils and the central solenoid. The toroidal field coils have a pure copper conductor in a stainless steel casing. The stress in the copper does not exceed a relatively conservative limit of 180 MPa.
Publication Date:
Jun 01, 1991
Product Type:
Technical Report
Report Number:
ENEA-RT-NUCL-90-48; RT/NUCL-90-48
Reference Number:
SCA: 700400; 700450; PA: ITAN-91:002102; SN: 92000621838
Resource Relation:
Other Information: PBD: Jun 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TOKAMAK TYPE REACTORS; SIZING; THERMONUCLEAR REACTOR COOLING SYSTEMS; NITROGEN; DESIGN; PERFORMANCE; SPECIFICATIONS; FEASIBILITY STUDIES; THERMONUCLEAR REACTOR MATERIALS; RESEARCH PROGRAMS; EXPERIMENT PLANNING; 700400; 700450; FUSION TECHNOLOGY; BLANKETS AND COOLING SYSTEMS
OSTI ID:
10107697
Research Organizations:
ENEA, Frascati (Italy). Area Nucleare; Ansaldo SpA, Genoa (Italy). Research Div.
Country of Origin:
Italy
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1120-5598; Other: ON: DE92744029; TRN: 91:002102
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
ITAN
Size:
61 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Tanga, A, Roccella, M, Tubbing, B J.D., Sack, C H, Bosia, G, and Sborchia, C. High performance, long pulse, tokamak. Italy: N. p., 1991. Web.
Tanga, A, Roccella, M, Tubbing, B J.D., Sack, C H, Bosia, G, & Sborchia, C. High performance, long pulse, tokamak. Italy.
Tanga, A, Roccella, M, Tubbing, B J.D., Sack, C H, Bosia, G, and Sborchia, C. 1991. "High performance, long pulse, tokamak." Italy.
@misc{etde_10107697,
title = {High performance, long pulse, tokamak}
author = {Tanga, A, Roccella, M, Tubbing, B J.D., Sack, C H, Bosia, G, and Sborchia, C}
abstractNote = {The key design and performance characteristics of a proposed high performance, long pulse tokamak (HLT) are described. The main parameters of the machine are: major radius, 3.4 m; minor radius, 1.2 m; elongation, 2; maximum toroidal field on axis, 8.3 T; maximum plasma current, 20 MA. The discharge flat top length is 40 s for a plasma with a 20 MA inductively driven current at a toroidal field of 8.0 T, and 500 s for a discharge with a 7 MA non-inductively driven current at a field of 3.5 T. With HLT, the main physics issues for a fusion reactor can be assessed: plasma physics and plasma operation in the ignited and sub-ignited regimes; burn stabilization; behaviour of divertor components under long-pulse thermal loads; and semi-continuous operation with non-inductive current drive. The crucial element in obtaining this level of performance in a machine of medium size is the use of active cooling with liquid nitrogen both for the toroidal field coils and the central solenoid. The toroidal field coils have a pure copper conductor in a stainless steel casing. The stress in the copper does not exceed a relatively conservative limit of 180 MPa.}
place = {Italy}
year = {1991}
month = {Jun}
}