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Prototype mitre bends of the ex-vessel waveguide system for the ITER upper launcher: Thermal hydraulic simulations and experiments with off-center mm-wave beams

Related publications (66)

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First experimental results from the EU 2MW coaxial cavity ITER gyrotron prototypie

Timothy Goodman, Stefano Alberti

The EU is working towards providing 2 MW, coaxial-cavity, CW, 170 GHz gyrotrons for ITER. Their design is based on results from an experimental pre-prototype tube in operation at FZK for several years, having a pulse length of several milliseconds. The fir ...

World Scientific Publ Co Inc, 687 Hartwell St, Teaneck, Nj 07666 Usa2008

Design status of the ITER ECRH upper launcher mm-wave system

René Chavan, Jean-Daniel Landis, Francisco Sanchez, Robert Bertizzolo

The purpose of the ITER electron cyclotron resonance heating (ECRH) upper launcher (UL), or antennae will be to provide localised current drive by accurately directing mm-wave beams up to 2MW, out of the four allocated upper port plugs, at chosen rational ...

2008

Electromagnetic compatibility of power line communication systems

Ana Vukicevic

The power system has been used for communication purposes for many decades, although it was mainly the power utility companies that used low bit rates for control and monitoring purposes. In the last ten years, however, the deregulation of the power and te ...

EPFL2008

Micromirrors for multiobject spectroscopy: optical and cryogenic characterization

Nico de Rooij, Wilfried Noell

We are developing micromirror arrays (MMA) for future generation infrared multiobject spectroscopy (MOS) requiring cryogenic environment. So far we successfully realized small arrays of 5 x 5 single-crystalline silicon micromirrors. The 100 mu m x 200 mu m ...

SPIE-Intl Soc Optical Engineering, PO Box 10, Bellingham, Wa 98227-0010 Usa2008

Dielectric electroactive polymer

Dielectric electroactive polymer comprising an elastomer layer arranged between two compliant elastomer electrodes characterized by the fact that at least one of said compliant elastomer electrodes is obtained by ion implantation on said elastomer layer. T ...

2007

Firing, quenching and annealing studies on thick-film resistors

Peter Ryser, Thomas Maeder, Sonia Vionnet Menot

In this work, we aim to understand the firing behaviour of three representative thick-film resistor compositions used in force and pressure sensors. The dependence of the materials' microstructure and properties (sheet resistance and its temperature coeffi ...

2004

The design of an ECRH system for JET-EP

Timothy Goodman, Stefano Alberti, Hartmut Zohm

An electron cyclotron resonance heating (ECRH) system has been designed for JET in the framework of the JET enhanced performance project (JET-EP) under the European fusion development agreement. Due to financial constraints it has been decided not to imple ...

2003

Advanced high-power gyrotrons

Stefano Alberti, Minh Quang Tran

Gyrotrons at high frequency with high-output power are mainly developed for microwave heating and current drive in plasmas for thermonuclear fusion. For the stellarator Wendelstein 7-X, now under construction at IPP Greifswald, Germany, a 10-MW electron-cy ...

2003

Applications of the cavity ring-down technique to a large-area rf-plasma reactor

Christoph Hollenstein, Alan Howling, Daniele Romanini

The cavity ring-down technique is applied to an industrial-scale radio-frequency (rf) plasma reactor for the measurement of the density and spatial profile of negative ions in pure oxygen and hydrogen rf plasmas, and for the detection of nanometric particl ...

1999

Operation of a quasi-optical gyrotron with a Gaussian output coupler

Minh Quang Tran, Jean-Philippe Hogge, Trach-Minh Tran

The operation of a 92 GHz quasi-optical gyrotron having a resonator formed by a spherical mirror and a diffraction grating placed in -1 order Littrow mount is presented. A power of 150 kW with a Gaussian output pattern was measured. The Gaussian content in ...

1996