H
H.-U. Nickel
Researcher at Karlsruhe Institute of Technology
Publications - 5
Citations - 74
H.-U. Nickel is an academic researcher from Karlsruhe Institute of Technology. The author has contributed to research in topics: Gyrotron & Magnetic field. The author has an hindex of 3, co-authored 5 publications receiving 73 citations. Previous affiliations of H.-U. Nickel include European Atomic Energy Community.
Papers
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Journal ArticleDOI
Mode competition using TE03 gyrotron cavities
Edith Borie,G. Gantenbein,B. Jödicke,G. Dammertz,O. Dumbrajs,T. Geist,G. Hochschild,M. Kuntze,H.-U. Nickel,Bernhard Piosczyk,Manfred Thumm +10 more
TL;DR: In this article, the influence of external parameters, such as the applied magnetic field, electron beam, and resonator geometry, on mode competition in tubes designed to operate at 150 and 140 GHz in the TE03 mode is investigated theoretically and experimentally.
Book ChapterDOI
Development of High Power 140 GHz Gyrotrons at KfK for Applications in Fusion
Bernhard Piosczyk,M. Kuntze,E. Borie,Günter Dammertz,Olgierd Dumbrajs,Gerd Gantenbein,A. Mobius,H.-U. Nickel,Manfred Thumm +8 more
TL;DR: In this article, the state of the development work of 140 GHz high power gyrotrons at KfK is given, in particular, the design and experimental results of a 0.5 MW, TE10,4 - gyrotron tube are described.
Journal ArticleDOI
Feasibility study of the EU home team on a 170GHz 1MW CW gyrotron for ECH on ITER
C.T. Iatrou,D.R. Whaley,Stefan Kern,Stefan Kern,Manfred Thumm,Manfred Thumm,Minh Quang Tran,A. Möbius,H.-U. Nickel,H.-U. Nickel,P. Norajitra,A. Wien,A. Wien,T. M. Tran,G. Bon Mardion,M. Pain,G. Tonon +16 more
TL;DR: In this paper, the feasibility study on the design of an ITER-relevant gyrotron oscillator at 170GHz, 1MW CW employing a diode electron gun, an advanced internal quasi-optical converter, a cryogenically cooled single disk sapphire window, and a depressed potential collector is presented.
Feasibility study of the EU home team on the manufacture of a gyrotron for ECRH on ITER
Tran M.Q.,Tran T.M.,D.R. Whaley,C.T. Iatrou,S. Kern,A. Mobius,H.-U. Nickel,P. Norajitra,Manfred Thumm,G. Bon-Mardion,M. Pain,G. Tonon +11 more
TL;DR: The 19th Int. Conference on Infrared and Millimeter Waves, Sendai, Japan, October 1994, JSAP Catalog Number: AP 941228, 67 - 68 (1994) Reference CRPP-CONF-1994-048 Record created on 2008-05-13, modified on 2016-08-08
Book ChapterDOI
Development of advanced high-power 140 GHz gyrotrons for fusion plasma applications
M. Kuntze,Edith Borie,G. Dammertz,O. Höchtl,C.T. Iatrou,Stefan Kern,A. Mobius,H.-U. Nickel,Bernhard Piosczyk,C. Semmle,Manfred Thumm,A. Wien +11 more
TL;DR: In this article, a TE 10, 4 gyrotron oscillator with advanced built-in quasi-optical mode converter and radial output in TEM 00 (94.5% mode purity) was operated at 0.50 MW with 8 ms pulse duration and 32% output efficiency (38% electronic efficiency).