CW Experiments With the EU 1-MW, 170-GHz Industrial Prototype Gyrotron for ITER at KIT

• Published in: IEEE transactions on electron devices Vol. 64; no. 9; pp. 3885 - 3892
• Main Authors: Ioannidis, Zisis C., Rzesnicki, Tomasz, Albajar, F., Alberti, S., Avramidis, Konstantinos A., Bin, William, Bonicelli, T., Bruschi, Alessandro, Chelis, Ioannis, Frigot, P.-E, Gantenbein, Gerd, Hermann, V., Hogge, J.-P, Illy, Stefan, Jianbo Jin, Jelonnek, John, Kasparek, W., Latsas, G., Lechte, C., Legrand, F., Kobarg, Thorsten, Pagonakis, Ioannis Gr, Rozier, Y., Schlatter, C., Schmid, Martin, Tigelis, Ioannis G., Thumm, Manfred, Tran, M. Q., Zein, Andy, Zisis, A.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-09-2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Acceleration; Continuous radiation; Cyclotron resonance; Electron cyclotron resonance; Electron cyclotron resonance heating and current drive (ECRH&CD); Electron tubes; gyrotron; Gyrotrons; international thermonuclear experimental reactor (ITER); Particle beams; Prototypes; Radio frequency; Test facilities
• ISSN: 0018-9383; 1557-9646
• DOI: 10.1109/TED.2017.2730242

The European 1-MW, 170-GHz continuous wave industrial prototype gyrotron for electron cyclotron resonance heating and current drive on international thermonuclear experimental reactor was during 2016 under test at the Karlsruhe Institute of Technology (KIT) test facility. In order to optimize the gyrotron operation, the tube was at first thoroughly tested in the short-pulse regime, with pulses that did not exceed 10 ms, for a wide range of operational parameters. Then, and after proper conditioning of the tube, the operation was extended to longer pulses with duration up to 180 s, which is the maximum pulselength possible at the KIT test facility. In this paper, we present in detail the achievements of the long-pulse experimental campaign.