caa a22 4500 445305541 CHVBK 20180317142611.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10762-010-9743-8 doi (NATIONALLICENCE)springer-10.1007/s10762-010-9743-8 Development in Russia of Megawatt Power Gyrotrons for Fusion [Elektronische Daten] [Alexander Litvak, Gregory Denisov, Vadim Myasnikov, Evgeny Tai, Englen Azizov, Vladimir Ilin] Tests of the Russian ITER gyrotrons were continued after debugging of the test facility at Kurchatov Institute including the evacuated transmission line and power supplies capable to provide gyrotron CW operation. A new ITER gyrotron (V-10) with upgraded body insulation, liquid cooling system for the DC-break ceramic and improved design of the relief window has been manufactured and is currently under test. A maximal total efficiency near 55% at 1MW power level was attained. The maximal pulse duration of 1000s at 0.8MW power was limited at that time by the test stand. At 1MW power level the gyrotron V-10 up to now reached a pulse duration of 570s. An advanced short-pulse (100ms) gyrotron model operating in the TE28.12 mode demonstrated a very robust operation at relatively high electron energies (up to 100keV) necessary to achieve 1.5-2MW output power. Three double frequency gyrotrons have been delivered to ASDEX Upgrade. The development of a multi-frequency gyrotron with a broadband or tuneable synthetic diamond window is in progress. Springer Science+Business Media, LLC, 2011 Gyrotron nationallicence Electron cyclotron system nationallicence Plasma fusion nationallicence ITER nationallicence Litvak Alexander Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Street, 603950, Nizhny Novgorod, Russia aut Denisov Gregory Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Street, 603950, Nizhny Novgorod, Russia aut Myasnikov Vadim GYCOM Ltd., 46 Ulyanov Street, 603155, Nizhny Novgorod, Russia aut Tai Evgeny GYCOM Ltd., 46 Ulyanov Street, 603155, Nizhny Novgorod, Russia aut Azizov Englen Kurchatov Institute, Kurchatov Square 1, 123182, Moscow, Russia aut Ilin Vladimir Kurchatov Institute, Kurchatov Square 1, 123182, Moscow, Russia aut Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/3(2011-03-01), 337-342 1866-6892 32:3<337 2011 32 10762 https://doi.org/10.1007/s10762-010-9743-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10762-010-9743-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Litvak Alexander Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Denisov Gregory Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Myasnikov Vadim GYCOM Ltd., 46 Ulyanov Street, 603155, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Tai Evgeny GYCOM Ltd., 46 Ulyanov Street, 603155, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Azizov Englen Kurchatov Institute, Kurchatov Square 1, 123182, Moscow, Russia aut NATIONALLICENCE 700 1- Ilin Vladimir Kurchatov Institute, Kurchatov Square 1, 123182, Moscow, Russia aut NATIONALLICENCE 773 0- Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/3(2011-03-01), 337-342 1866-6892 32:3<337 2011 32 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer