Internal transport barrier dynamics with plasma rotation in JET

被引：35

作者：

de Vries, P. C. ^{[1
]}

Joffrin, E. ^{[2
,3
]}

Brix, M. ^{[1
]}

Challis, C. D. ^{[1
]}

Crombe, K. ^{[4
]}

Esposito, B. ^{[5
]}

Hawkes, N. C. ^{[1
]}

Giroud, C. ^{[1
]}

Hobirk, J. ^{[6
]}

Lonnroth, J. ^{[7
]}

Mantica, P. ^{[8
]}

Strintzi, D. ^{[9
]}

Tala, T. ^{[10
]}

Voitsekhovitch, I. ^{[1
]}

机构：

[1] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] Culham Sci Ctr, JET EFDA CSU, Abingdon OX14 3DB, Oxon, England

[3] Assoc Euratom CEA, F-13108 Cadarache, France

[4] Univ Ghent, Dept Appl Phys, B-9000 Ghent, Belgium

[5] Assoc Euratom ENEA Fus, I-00044 Frascati, Roma, Italy

[6] Euraton Assoc, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[7] Aalto Univ, Assoc Euratom Tekes, FIN-02150 Espoo, Finland

[8] EURATOM ENEA CNR Assoc, Inst Fis Plasma, Milan, Italy

[9] Natl Tech Univ Athens, EURATOM Assoc, GR-15773 Athens, Greece

[10] VTT, Assoc Euratom Tekes, Espoo 02044, Finland

[11] JET EFDA Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

来源：

NUCLEAR FUSION | 2009年 / 49卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

Q-PROFILE; MAGNETIC SHEAR; SIMULATIONS; SPECTROSCOPY; CONFINEMENT; PERFORMANCE; TURBULENCE; OPERATION; PHYSICS; JT-60U;

D O I：

10.1088/0029-5515/49/7/075007

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

At JET the dynamics of internal transport barriers (ITBs) has been explored by trying to decouple the effects of heating on the one hand and torque on the other with the ultimate objective of identifying the minimum torque required for the formation of transport barriers. The experiments shed light on the physics behind the initial trigger for ITBs, which often shows to be linked to the shape of the q profile and magnetic shear, while the further development was influenced by the strength of the rotational shear. In discharges with a small amount of rotational shear ITBs were triggered, which suggest that the overall rotational shear is not the dominant factor in the triggering process. However, the subsequent growth of the barrier was limited if the rotational shear was too low at the time of triggering. This growth phase may be highly non-linear, with several possible positive feedback loops, such as the increases in the toroidal and poloidal component of the rotational shear caused by the ITB itself.

引用

页数：7

共 32 条

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