The dynamic ergodic divertor in the TEXTOR tokamak: plasma response to dynamic helical magnetic field perturbations

The dynamic ergodic divertor in the TEXTOR tokamak: plasma response to dynamic helical magnetic field perturbations
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DOI：
10.1088/0741-3335/46/12b/013
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发表时间：
2004-12
期刊：
Plasma Physics and Controlled Fusion
影响因子：
2.2
通讯作者：
K. Finken;S. Abdullaev;W. Biel;M. de Bock;C. Busch;E. Farshi;M. von Hellermann;G. Hogeweij;M. Jakubowski;R. Jaspers;H. Koslowski;A. Kraemer-Flecken;A. Lazaros;M. Lehnen;Y. Liang;A. Nicolai;O. Schmitz;B. Unterberg;E. Westerhof;R. Wolf;O. Zimmermann;M. D. de Baar;G. Bertschinger;S. Brezinsek;I. Classen;A. Donné;H. Esser;H. Gerhauser;B. Giesen;D. Harting;J. Hoekzema;P. Huettemann;S. Jachmich;K. Jakubowska;D. Kalupin;F. Kelly;Y. Kikuchi;A. Kirschner;R. Koch;M. Korten;A. Kreter;J. Krom;U. Kruezi;A. Litnovsky;X. Loozen;N. Lopes Cardozo;A. Lyssoivan;O. Marchuk;P. Mertens;A. Messiaen;O. Neubauer;V. Philipps;A. Pospieszczyk;D. Reiser;D. Reiter;A. Rogister;T. Van Rompuy;A. Savtchkov;U. Samm;R. Schorn;F. Schueller;B. Schweer;G. Sergienko;K. Telesca;M. Tokar;G. Van Oost;R. Uhlemann;G. Van Wassenhove;R. Weynants;S. Wiesen;Y. Xu
K. Finken;S. Abdullaev;W. Biel;M. de Bock;C. Busch;E. Farshi;M. von Hellermann;G. Hogeweij;M. Jakubowski;R. Jaspers;H. Koslowski;A. Kraemer-Flecken;A. Lazaros;M. Lehnen;Y. Liang;A. Nicolai;O. Schmitz;B. Unterberg;E. Westerhof;R. Wolf;O. Zimmermann;M. D. de Baar;G. Bertschinger;S. Brezinsek;I. Classen;A. Donné;H. Esser;H. Gerhauser;B. Giesen;D. Harting;J. Hoekzema;P. Huettemann;S. Jachmich;K. Jakubowska;D. Kalupin;F. Kelly;Y. Kikuchi;A. Kirschner;R. Koch;M. Korten;A. Kreter;J. Krom;U. Kruezi;A. Litnovsky;X. Loozen;N. Lopes Cardozo;A. Lyssoivan;O. Marchuk;P. Mertens;A. Messiaen;O. Neubauer;V. Philipps;A. Pospieszczyk;D. Reiser;D. Reiter;A. Rogister;T. Van Rompuy;A. Savtchkov;U. Samm;R. Schorn;F. Schueller;B. Schweer;G. Sergienko;K. Telesca;M. Tokar;G. Van Oost;R. Uhlemann;G. Van Wassenhove;R. Weynants;S. Wiesen;Y. Xu
中科院分区：
物理与天体物理2区
文献类型：
--
作者：
K. Finken;S. Abdullaev;W. Biel;M. de Bock;C. Busch;E. Farshi;M. von Hellermann;G. Hogeweij;M. Jakubowski;R. Jaspers;H. Koslowski;A. Kraemer-Flecken;A. Lazaros;M. Lehnen;Y. Liang;A. Nicolai;O. Schmitz;B. Unterberg;E. Westerhof;R. Wolf;O. Zimmermann;M. D. de Baar;G. Bertschinger;S. Brezinsek;I. Classen;A. Donné;H. Esser;H. Gerhauser;B. Giesen;D. Harting;J. Hoekzema;P. Huettemann;S. Jachmich;K. Jakubowska;D. Kalupin;F. Kelly;Y. Kikuchi;A. Kirschner;R. Koch;M. Korten;A. Kreter;J. Krom;U. Kruezi;A. Litnovsky;X. Loozen;N. Lopes Cardozo;A. Lyssoivan;O. Marchuk;P. Mertens;A. Messiaen;O. Neubauer;V. Philipps;A. Pospieszczyk;D. Reiser;D. Reiter;A. Rogister;T. Van Rompuy;A. Savtchkov;U. Samm;R. Schorn;F. Schueller;B. Schweer;G. Sergienko;K. Telesca;M. Tokar;G. Van Oost;R. Uhlemann;G. Van Wassenhove;R. Weynants;S. Wiesen;Y. Xu

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近年来，在m/n = 3/1扰动场穿透较深的条件下，对TEXTOR的动态遍历导流器（DED）进行了研究。扰动场产生了(a)螺旋分流器，(b)遍行模式和/或(c)撕裂模式的激发，这取决于DED电流是静态的，在共电流方向上旋转还是在逆流方向上旋转。研究了高回收率或增强屏蔽性能等特性。遍历作用的一个强烈影响是等离子体旋转的自旋上升，可能是由于等离子体边缘的电场。撕裂模式以一种相当可复制的方式激发，并且研究了它们的激发阈值，它们的运动以及由于ECRH/ECCD而导致的它们的减少。不同情况的特点是环面速度剖面的强烈变化和径向输运的减弱或增强。
Recently, the dynamic ergodic divertor (DED) of TEXTOR has been studied in an m/n = 3/1 set-up which is characterized by a relatively deep penetration of the perturbation field. The perturbation field creates (a) a helical divertor, (b) an ergodic pattern and/or (c) excitation of tearing modes, depending on whether the DED current is static, rotating in the co-current direction or in the counter-current direction. Characteristic divertor properties such as the high recycling regime or enhanced shielding have been studied. A strong effect of the ergodization is spin up of the plasma rotation, possibly due to the electric field at the plasma edge. Tearing modes are excited in a rather reproducible way and their excitation threshold value, their motion and their reduction due to the ECRH/ECCD have been studied. The different scenarios are characterized by strong modifications of the toroidal velocity profile and by a reduced or enhanced radial transport.