Περίληψη:
The EU gyrotron for the ITER Electron Cyclotron (EC) heating system has
been developed in coordinated efforts of the EGYC Consortium, Thales ED
(TED) and Fusion for Energy (F4E) and under the supervision of ITER
Organization Central Team. After the successful verification of the
design of the 1MW, 170 GHz hollow cylindrical cavity gyrotron operating
at the nominal TE32,9 mode with a short pulse gyrotron prototype at KIT,
an industrial CW gyrotron prototype was manufactured by TED and tested
at similar to 0.8 MW output power and 180 s pulse duration, which is the
limit of the HV power supply currently available at KIT. The experiments
are being continued at SPC in 2018 to extend further the pulse duration,
taking advantage of the existing CW full-power capabilities of the
gyrotron test facility recently upgraded for the FALCON project. The
gyrotron cavity interaction is very sensitive to the alignment of the
internal mechanical parts of the gyrotron tube with the magnetic field
generated by the superconducting magnet within a typical range of 0.2 -
0.5 mm. The control of the tolerances and deformations becomes therefore
critical to achieving the target performances. With the EU gyrotron
prototype it was possible to adjust the alignment of the gyrotron tube
with respect to the magnetic field axis during the installation and
commissioning phase. The actual shift and tilt movements were verified
using advanced metrology methods such as photogrammetry. In this paper,
the alignment control techniques and procedures will be discussed also
in view of enhancing the reproducibility of gyrotron performance during
series production.
Συγγραφείς:
Sanchez, Francisco
Albajar, Ferran
Lo Bue, Alessandro and
Alberti, Stephano
Avramidis, Konstantinos
Bonicelli, Tullio and
Bruschi, Alex
Gantenbein, Gerd
Hogge, Jean-Philippe
Illy,
Stefan
Ioannidis, Zisis
Leggieri, Alberto
Legrand, Francois
and Pagonakis, Ioannis
Perial, Etienne
Rzesnicki, Tomasz and
Thumm, Manfred
Tigelis, Ioannis
