FIRST EXPERIMENTAL RESULTS FROM THE EU 2 MW COAXIAL CAVITY ITER GYROTRON PROTOTYPE

被引：0

作者：

Goodman, T. P. ^{[1
]}

Alberti, S. ^{[1
]}

Droz, E. ^{[1
]}

Fasel, D. ^{[1
]}

Hogge, J. P. ^{[1
]}

Jawla, S. ^{[1
]}

Porte, L. ^{[1
]}

Siravo, U. ^{[1
]}

Tran, M. Q. ^{[1
]}

Albajar, F. ^{[2
]}

Bonicelli, T. ^{[2
]}

Benin, P. ^{[3
]}

Bethuys, S. ^{[3
]}

Lievin, C. ^{[3
]}

Cirant, S. ^{[4
]}

Dumbrajs, O. ^{[5
,6
]}

Gantenbein, G. ^{[7
,8
]}

Illy, S. ^{[7
,8
]}

Jin, J. ^{[7
,8
]}

Kern, S. ^{[7
,8
]}

Piosczyk, B. ^{[7
,8
]}

Rzesnicki, T. ^{[7
,8
]}

Thumm, M. ^{[7
,8
]}

机构：

[1] EPFL Ecublens, Assoc Euratom Confederat Suisse, Ctr Rech Phys Plasmas, CH-1015 Lausanne, Switzerland

[2] European Fus Dev Agreement, D-8S748 Garching, Germany

[3] Thales Electron Devices, F-78I41 Velizy Villacoublay, France

[4] Ist Fis Plasma EURATOM ENEA CNR Assoc, Milan, Italy

[5] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia

[6] Aalto Univ, Assoc EURATOM TEKES, FIN-02150 Espoo, Finland

[7] Forschungszentrum Karlsruhe, Inst Hochleistungsimpuls & Mikrowellentech, D-76021 Karlsruhe, Germany

[8] Assoc EURATOM FZK, D-76021 Karlsruhe, Germany

来源：

ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING | 2009年

基金：

瑞士国家科学基金会;

关键词：

D O I：

10.1142/9789812814647_0074

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：

The EU is working towards providing 2 MW, coaxial-cavity, CW, 170 GHz gyrotrons for ITER. Their design is based on results from an experimental pre-prototype tube in operation at FZK for several years, having a pulse length of several milliseconds. The first industrial prototype tube is designed for CW operation, but, in a first phase, will be tested out to Is at the European Gyrotron Test Facility in Lausanne, Switzerland as part of a phased testing/development program (1s, 60 s, CW). It is known that RF beam profile shaping, stray radiation handling, and collector cooling at these high power levels are three issues for the gyrotron. The gyrotron, magnet and body power supply have been delivered and successfully installed at the test stand, hosted by the CRPP. The main high voltage power supply delivery is delayed, so one of the power supplies dedicated to 3 of 9 gyrotrons in the TCV EC system is being used as a backup power source (all 3 TCV power sources can be interfaced with the test stand). Cathode conditioning began in November 2007 followed by collector conditioning in December. Parasitic low frequency oscillations have not hindered operation, and the tests have progressed to conditioning out to 0.14 s pulses by March 2008. During this period, the performance concerning microwave generation has been characterised and the RF beam profile has been measured at several planes to allow reconstruction of the phase and amplitude profile at the gyrotron window and to provide the necessary information permitting proper alignment of the compact RF loads prior to pulse extension. The power will be measured, according to the pulse length, using either a very-short pulse (<0.01 s) load on loan from FZK, or short-pulse (<0.2 s) or long-pulse (CW), spherical, calorimetric loads developped as part of this program by CNR. This paper presents the preliminary results of these operations.

引用

页码：515 / +

页数：3

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