Error field mode studies on JET, COMPASS-D and DIII-D, and implications for ITER

R. J. Buttery; M. De Benedetti; D. A. Gates; Yu Gribov; T. C. Hender; R. J. La Haye; P. Leahy; J. A. Leuer; A. W. Morris; A. Santagiustina; J. T. Scoville; B. J.D. Tubbing

doi:10.1088/0029-5515/39/11Y/323

Error field mode studies on JET, COMPASS-D and DIII-D, and implications for ITER

R. J. Buttery
, M. De Benedetti
, D. A. Gates
, Yu Gribov
, T. C. Hender
, R. J. La Haye
, P. Leahy
, J. A. Leuer
, A. W. Morris
, A. Santagiustina
, J. T. Scoville
, B. J.D. Tubbing

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

Abstract

New experiments on JET, COMPASS-D and DIII-D have identified the critical scalings of error field sensitivity and harmonic content effects, enabling predictions to be made of the requirements for larger devices such as ITER. Thresholds are lowest at low density, a regime proposed for H mode access on ITER. Results suggest a moderate error field sensitivity (δB/B≈10^-4) for ITER, comparable with the size of its intrinsic error, although there are uncertainties in scaling behaviour. Other studies on COMPASS-D and DIII-D show that sideband harmonics to the (2, 1) component play an important role. Thus, a correction system for ITER will be important, with flexibility to correct sidebands desirable, possibly assisted by beam rotation. Such a system has been designed and is capable of reducing multiple harmonic error levels to approximately 2×10^-5.

Original language	English
Pages (from-to)	1827-1835
Number of pages	9
Journal	Nuclear Fusion
Volume	39
Issue number	Special Issu
DOIs	https://doi.org/10.1088/0029-5515/39/11Y/323
Publication status	Published - 1999
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1088/0029-5515/39/11Y/323

Cite this

@article{df6f8ddf94774ff2814aee9e85591726,

title = "Error field mode studies on JET, COMPASS-D and DIII-D, and implications for ITER",

abstract = "New experiments on JET, COMPASS-D and DIII-D have identified the critical scalings of error field sensitivity and harmonic content effects, enabling predictions to be made of the requirements for larger devices such as ITER. Thresholds are lowest at low density, a regime proposed for H mode access on ITER. Results suggest a moderate error field sensitivity (δB/B≈10-4) for ITER, comparable with the size of its intrinsic error, although there are uncertainties in scaling behaviour. Other studies on COMPASS-D and DIII-D show that sideband harmonics to the (2, 1) component play an important role. Thus, a correction system for ITER will be important, with flexibility to correct sidebands desirable, possibly assisted by beam rotation. Such a system has been designed and is capable of reducing multiple harmonic error levels to approximately 2×10-5.",

author = "Buttery, \{R. J.\} and \{De Benedetti\}, M. and Gates, \{D. A.\} and Yu Gribov and Hender, \{T. C.\} and \{La Haye\}, \{R. J.\} and P. Leahy and Leuer, \{J. A.\} and Morris, \{A. W.\} and A. Santagiustina and Scoville, \{J. T.\} and Tubbing, \{B. J.D.\}",

year = "1999",

doi = "10.1088/0029-5515/39/11Y/323",

language = "English",

volume = "39",

pages = "1827--1835",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing Ltd.",

number = "Special Issu",

}

TY - JOUR

T1 - Error field mode studies on JET, COMPASS-D and DIII-D, and implications for ITER

AU - Buttery, R. J.

AU - De Benedetti, M.

AU - Gates, D. A.

AU - Gribov, Yu

AU - Hender, T. C.

AU - La Haye, R. J.

AU - Leahy, P.

AU - Leuer, J. A.

AU - Morris, A. W.

AU - Santagiustina, A.

AU - Scoville, J. T.

AU - Tubbing, B. J.D.

PY - 1999

Y1 - 1999

N2 - New experiments on JET, COMPASS-D and DIII-D have identified the critical scalings of error field sensitivity and harmonic content effects, enabling predictions to be made of the requirements for larger devices such as ITER. Thresholds are lowest at low density, a regime proposed for H mode access on ITER. Results suggest a moderate error field sensitivity (δB/B≈10-4) for ITER, comparable with the size of its intrinsic error, although there are uncertainties in scaling behaviour. Other studies on COMPASS-D and DIII-D show that sideband harmonics to the (2, 1) component play an important role. Thus, a correction system for ITER will be important, with flexibility to correct sidebands desirable, possibly assisted by beam rotation. Such a system has been designed and is capable of reducing multiple harmonic error levels to approximately 2×10-5.

AB - New experiments on JET, COMPASS-D and DIII-D have identified the critical scalings of error field sensitivity and harmonic content effects, enabling predictions to be made of the requirements for larger devices such as ITER. Thresholds are lowest at low density, a regime proposed for H mode access on ITER. Results suggest a moderate error field sensitivity (δB/B≈10-4) for ITER, comparable with the size of its intrinsic error, although there are uncertainties in scaling behaviour. Other studies on COMPASS-D and DIII-D show that sideband harmonics to the (2, 1) component play an important role. Thus, a correction system for ITER will be important, with flexibility to correct sidebands desirable, possibly assisted by beam rotation. Such a system has been designed and is capable of reducing multiple harmonic error levels to approximately 2×10-5.

UR - https://www.scopus.com/pages/publications/12944281158

U2 - 10.1088/0029-5515/39/11Y/323

DO - 10.1088/0029-5515/39/11Y/323

M3 - Article

AN - SCOPUS:12944281158

SN - 0029-5515

VL - 39

SP - 1827

EP - 1835

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - Special Issu

ER -

Error field mode studies on JET, COMPASS-D and DIII-D, and implications for ITER

Abstract

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this