Development of a 2 MW, CW, 170 GHz Coaxial Cavity Gyrotrons for ITER
J.-P. Hogge1,
S. Alberti1, A. Arnold2,3, D. Bariou4,
A. Beunas4, T. Bonicelli5, R. Chavan1,
S. Cirant6, O. Dumbrajs7, O. Drumm2,3,
D. Fasel1, E. Giguet4, T. Goodman1,
M. Henderson1, S. Illy2, J. Jin2,
G. LeCloarec4, C. Lievin4, P.-L. Mondino6, B. Piosczyk2, L. Porte1,
T.Rzesnicki², M. Santinelli8, A.B. Sterck9,
M. Thumm2,3, M.Q. Tran1,5,
A.G.A. Verhoeven9, I. Yovchev1
1Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération
Suisse, EPFL Ecublens, CH-1015 Lausanne, Switzerland,
2Forschungszentrum
Karlsruhe, Association EURATOM-FZK, Institut für Hochleistungsimpuls- und
Mikrowellentechnik, Postfach 3640, D-76021 Karlsruhe, Germany,
3Universität
Karlsruhe, Institut für Höchstfrequenztechnik und Elektronik, Kaiserstr. 12,
D-76128 Karlsruhe, Germany,
4Thalès Electron Devices, 2 Rue de Latécoère, F-78141 Vélizy-Villacoublay,
France,
5EFDA - Close Support Unit – Garching, Boltzmannstrasse 2, D-85748 Garching
bei Muenchen, Germany,
6Instituto di Fisica del Plasma – Consiglio Nazionale delle Ricerche, Via
Cozzi 53, I-20125 Milano, Italy,
7Department
of Engineering Physics and Mathematics, Helsinki University of Technology,
Association EURATOM
TEKES, FIN-02150 Espoo, Finland,
8Associazione
Euratom-ENEA sulla Fusione, Via E. Fermi 45, P.O. Box 65, I-00044 Frascati
(Roma), Italy,
9FOM –
Instituut voor Plasmafysica ‘Rijnhuizen’, Association EURATOM – FOM, P.O. Box
1207, 3430 BE Nieuwegein, The Netherlands.
e-mail:
jean-philippe.hogge@epfl.ch
A 170 GHz coaxial cavity gyrotron
with an RF output power of 2 MW in continuous wave (CW) operation, as can
be used in the electron cyclotron heating (ECH) system of ITER, is under
development within the frame of a collaboration between European research
centers and Thalès Electron Devices (TED), under the auspices of the European
Fusion Development Agreement (EFDA). Based on recent achievements on a short
pulse (up to 20 ms) 165 GHz coaxial cavity gyrotron at Forschungszentrum
Karlsruhe (FZK) [1], the conceptual design of such a tube compatible with CW
operation has been completed and the manufacture process of a first prototype
has been launched.
In parallel, the Centre de Recherches en
Physique des Plasmas (CRPP) is presently setting up a test facility especially
designed to host 2MW/CW gyrotrons and to perform experimental investigations up
to full performances.
In this paper, we present the design of
the coaxial cavity gyrotron and of the test facility. Milestones on the road
aiming to a 2MW/CW tube are also given.
[1] B. Piosczyk, A. Arnold, G. Dammertz,
O. Dumbrajs, M. Kuntze, M. K. Thumm, Coaxial Cavity Gyrotron - Recent
Experimental Results, IEEE Trans. on Plasma Science, 30, 819 – 827 (2002).