First experimental results from the European union 2-MW coaxial cavity ITER gyrotron prototype (Articolo in rivista)

Type
Label
  • First experimental results from the European union 2-MW coaxial cavity ITER gyrotron prototype (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • Hogge J. P., Goodman T. P., Alberti S., Albajar F., Avramides K. A., Benin P., Bethuys S., Bin W., Bonicelli T., Bruschi A., Cirant S., Droz E., Dumbrajs O., Fasel D., Gandini F., Gantenbein G., Illy S., Jawla S., Jin J., Kern S., Lavanchy P., Liévin C., Marletaz, B., Marmillod P., Perez A., Piosczyk B., Pagonakis I., Porte L., Rzesnickl T., Siravo U., Thumm M., Tran M. Q. (2009)
    First experimental results from the European union 2-MW coaxial cavity ITER gyrotron prototype
    in Fusion science and technology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Hogge J. P., Goodman T. P., Alberti S., Albajar F., Avramides K. A., Benin P., Bethuys S., Bin W., Bonicelli T., Bruschi A., Cirant S., Droz E., Dumbrajs O., Fasel D., Gandini F., Gantenbein G., Illy S., Jawla S., Jin J., Kern S., Lavanchy P., Liévin C., Marletaz, B., Marmillod P., Perez A., Piosczyk B., Pagonakis I., Porte L., Rzesnickl T., Siravo U., Thumm M., Tran M. Q. (literal)
Pagina inizio
  • 204 (literal)
Pagina fine
  • 212 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 55 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
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  • 1. Ecole Polytech Fed Lausanne, EURATOM Confederat Suisse, CRPP, CH-1015 Lausanne, Switzerland 2. EFDA Close Support Unit, D-85748 Garching, Germany 3. Natl Tech Univ Athens, Sch Elect & Comp Engn, Assoc EURATOM Hellen Republ, GR-15772 Athens, Greece 4. Thales Electron Devices TED, F-78141 Velizy Villacoublay, France 5. CNR, ENEA, EURATOM Assoc, Ist Fis Plasma, I-20125 Milan, Italy 6. Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia 7. Helsinki Univ Technol, EURATOM Assoc, TEKES, FIN-02150 Espoo, Finland 8. Forschungszentrum Karlsruhe, IHM, EURATOM FZK, D-76021 Karlsruhe, Germany 9. Univ Karlsruhe, Inst Hoechstfrequenztech & Elektron, D-76131 Karlsruhe, Germany (literal)
Titolo
  • First experimental results from the European union 2-MW coaxial cavity ITER gyrotron prototype (literal)
Abstract
  • The European Union is working toward providing 2-MW, coaxial-cavity, continuous-wave (cw) 170-GHz gyrotrons for ITER. Their design is based on results,from an experimental preprototype tube having a pulse length of several milliseconds, in operation at Forschungszentrum Karlsruhe (FZK) for several years now. The first industrial prototype tube was designed for cw operation but, in a first phase, aimed at a pulse length of 1 s at the European Gyrotron Test Facility in Lausanne, Switzerland, as part of a phased testing/development program. (1 s, 60 s, cw). The first experimental results of the operation of this prototype gyrotron are reported here. The microwave generation was characterized at very short pulse length (<0.01 s) using a load on loan from FZK, and the highest measured output power was 1.4 MW, at a beam energy significantly lower than the design value (83 k V instead of 90 kV), limited by arcing in the tube. The radio frequency (rf) beat, profile wets measured to allow reconstruction of the phase and amplitude profile at the window and to provide the necessary information permitting proper alignment of the compact rf loads prior to pulse extension. Arcs in the tube limited the pulse length extension to a few tens of milliseconds. According to present planning, the tube is going to be opened, inspected, and refurbished, depending on the results of the inspection, to allow testing of an improved version of the mode launcher and replacement of some subassemblies. (literal)
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