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The progress in the development of the European 170 GHz, 1 MW/CW gyrotron for electron cyclotron heating & current drive (ECH&CD) on ITER is reported. A continuous wave (CW) prototype is being manufactured by Thales Electron Devices (TED), France, while a short-pulse (SP) prototype gyrotron is in parallel under manufacture at Karlsruhe Institute of Technology (KIT), with the purpose of validating the design of the CW industrial prototype components. The fabrication of most of the sub-assemblies of the SP prototype has been completed. In a first step, an existing magnetron injection gun (MIG) available at KIT was used. Despite this non-ideal configuration, the experiments provided a validation of the design, substantiated by an excellent agreement with numerical simulations. The tube, operated without a depressed collector, is able to produce more than 1 MW of output power with efficiency in excess of 30%, as expected, and compatible with the ITER requirements. © 2015 Karlsruhe Institute of Technology.

Europe is devoting significant joint efforts to develop and to manufacture MW-level gyrotrons for electron cyclotron heating and current drive of future plasma experiments. The two most important ones are the stellarator Wendelstein W7-X at Greifswald and the Tokamak ITER at Cadarache. While the series production of the 140 GHz, 1 MW, CW gyrotrons for the 10-MW electron cyclotron resonance heating system of stellarator W7-X is proceeding, the European GYrotron Consortium is presently developing the EU-1 MW, 170 GHz, CW gyrotron for ITER. The initial design had already been initiated in 2007, as a risk mitigation measure during the development of the advanced ITER EU-2-MW coaxial-cavity gyrotron. The target of the ITER EU-1-MW conventional-cavity design is to benefit as much as possible from the experiences made during the development and series production of the W7-X gyrotron and of the experiences gained from the earlier EU-2-MW coaxial-cavity gyrotron design. Hence, the similarity of the construction will be made visible in this paper. During 2012, the scientific design of the ITER EU-1-MW gyrotron components has been finalized. In collaboration with the industrial partner Thales electron devices, Vélizy, France, the industrial design of the technological parts of the gyrotron is being completed. A short-pulse prototype is under development to support the design of the CW prototype tube. The technological path toward the EU ITER-1 MW gyrotron and the final design will be presented. © 2013 IEEE.

Extreme Ultraviolett (EUV) Strahlungsquellen für die Lithographie basierend auf Synchrotron Strahlung Die vorliegende Studie beschreibt Überlegungen, Synchrotron Strahlung als Quelle für die Lithographie der nächsten Generation (Next Generation Lithography: NGL) basierend auf EUV Strahlungzu verwenden (EUV bedeutet hier Strahlung mit einer Wellenlänge von 13.5 oder 11.3 nm). Die Anforderungen an die Quelle sind: 50 W, 2% Bandbreite und geringe Leistung außerhalb dieser Bandbreite.Es wurden drei Möglichkeiten untersucht. Die ersten beiden beziehen sich auf die Strahlung, die von Ablenkmagneten und Undulatoren erzeugt wird. Die Resultate bestätigen frühere Untersuchungen, die zum Beispiel von Oxford Instruments and anderen durchgeführt wurden, daß diese Quellen nur ungenügend hohe Strahlungsleistungen innerhalb des 2% Bandes erzeugen während die erzeugte Leistung ausserhalb dieses Bandes sehr hoch ist. Als dritte Möglichkeit wurde ein Free Electron Laser (FEL) untersucht bestehend aus einem 500 MeV Linearbeschleuniger und einenm supraleitenden Mini-Undulator. Eine solche Anordnung könnte eine Strahlleistung von über 50 W innerhalb des 2 % Bandes erzeugen bei vernachläßigbarerLeistung außerhalb dieses Bandes.