Progress and First Results With the New Multifrequency ECRH System for ASDEX Upgrade

被引：15

作者：

Wagner, Dietmar H. ^{[1
]}

Stober, Joerg Karl ^{[1
]}

Leuterer, Fritz ^{[1
]}

Sips, George ^{[1
]}

Gruenwald, Gerhard ^{[1
]}

Monaco, Francesco ^{[1
]}

Muenich, Max J. ^{[1
]}

Poli, Emanuele ^{[1
]}

Schuetz, Harald ^{[1
]}

Volpe, Francesco ^{[1
]}

Treutterer, Wolfgang ^{[1
]}

Zohm, Hartmut ^{[1
,2
]}

Franke, Thomas ^{[1
]}

Thumm, Manfred ^{[3
]}

Heidinger, Roland ^{[4
]}

Gantenbein, Gerd ^{[3
]}

Meier, Andreas ^{[4
]}

Kasparek, Walter ^{[5
]}

Lechte, Carsten ^{[5
]}

Litvak, Alexander G. ^{[6
]}

Denisov, Gregory G. ^{[6
]}

Chirkov, Alexei ^{[6
]}

Tai, Evgeny ^{[7
]}

Popov, Leonid ^{[7
]}

Nichiporenko, Vadim ^{[7
]}

Myasnikov, Vadim ^{[7
]}

Solyanova, Elena ^{[7
]}

Malygin, Sergey ^{[7
]}

机构：

[1] EURATOM, IPP, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[2] Univ Munich, D-80539 Munich, Germany

[3] EURATOM, Inst Hochleistungsimpulsund Mikrowellentech, Forschungszentrum Karlsruhe, FZK, D-76021 Karlsruhe, Germany

[4] EURATOM, Inst Mat Forsch, Forschungszentrum Karlsruhe, FZK, D-76021 Karlsruhe, Germany

[5] Univ Stuttgart, Inst Plasmaforsch, D-70569 Stuttgart, Germany

[6] Russian Acad Sci, Inst Appl Phys, Nizhny 603600, Novgorod, Russia

[7] GYCOM Ltd, Nizhny 603155, Novgorod, Russia

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2009年 / 37卷 / 03期

关键词：

Electron cyclotron resonance heating (ECRH); fast steerable launcher; step-tunable Gyrotron;

D O I：

10.1109/TPS.2008.2011798

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：

A multifrequency electron cyclotron resonance heating (ECRH) system is currently under construction at the ASDEX Upgrade tokamak experiment. The system employs depressed collector gyrotrons, step tunable In the range of 105-140 GHz, with a maximum output power of 1 MW and a pulse length of 10 s. One two-frequency GYCOM gyrotron has been in routine operation at ASDEX Upgrade since 2006. A further extension or the system with three more gyrotrons; is underway. An in situ calibration scheme for the broadband torus window has been developed. The system is equipped with fast steerable mirrors for real-time MHD control. The gyrotron and the mirrors are fully integrated into the discharge control system. The ECRH system turned out to be essential for the operation of H-modes after covering the plasma facing components of ASDEX Upgrade with tungsten. Deposition of ECRH inside rho tor < 0.2 is necessary to prevent accumulation of W in plasmas with high pedestal temperatures. With respect to the limited loop voltage available in ITER, the use of ECRH for neutral-gas preionization to facilitate plasma breakdown and its application during the current ramp-up to increase the conductivity In order to save transformer flux have been demonstrated successfully for 105 GHz, 3.2 T (O1-mode) and 140 GHz, 2.2 T (X2-mode), corresponding to 170 GHz at ITER with the full and half values of its foreseen toroidal field of 5.3 T.

引用

页码：395 / 402

页数：8

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