Publication

Progress on the ITER Upper Launcher Control Systems

Mark Henderson, René Chavan
2008
Posters

Abstract

The main objective of the ITER ECRH Upper Launcher (UL) is to control magnetohydrodynamic (MHD) activity: sawtooth oscillations and neoclassical tearing modes. 170GHz RF beams are oriented and focused to obtain a maximum overlapping of the waists of all the beams throughout the deposition location range in the plasma. The steering of the beams is done using 8 independent steering mirrors (SM) placed in the front par t of each one of the four dedicated por t plugs. Accurate and rapid control of the SMs for directing the beams at the required location is crucial in order to achieve an efﬁcient MHD control. An assessment of the SM ﬁrst prototype capabilities to meet the ITER requirements has been carried out giving promising results for this application.

Official source

https://infoscience.epfl.ch/entities/publication/76cb0250-b711-4d7c-aae3-f9763ca41835

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Mark Henderson, René Chavan
2008
Posters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/76cb0250-b711-4d7c-aae3-f9763ca41835

About this result

Related concepts (14)

ITER

ITER (initially the International Thermonuclear Experimental Reactor, iter meaning "the way" or "the path" in Latin) is an international nuclear fusion research and engineering megaproject aimed at creating energy through a fusion process similar to that of the Sun. Upon completion of construction of the main reactor and first plasma, planned for late 2025, it will be the world's largest magnetic confinement plasma physics experiment and the largest experimental tokamak nuclear fusion reactor.

Magnetohydrodynamic drive

A magnetohydrodynamic drive or MHD accelerator is a method for propelling vehicles using only electric and magnetic fields with no moving parts, accelerating an electrically conductive propellant (liquid or gas) with magnetohydrodynamics. The fluid is directed to the rear and as a reaction, the vehicle accelerates forward. Studies examining MHD in the field of marine propulsion began in the late 1950s. Few large-scale marine prototypes have been built, limited by the low electrical conductivity of seawater.

Magnetohydrodynamic generator

A magnetohydrodynamic generator (MHD generator) is a magnetohydrodynamic converter that transforms thermal energy and kinetic energy directly into electricity. An MHD generator, like a conventional generator, relies on moving a conductor through a magnetic field to generate electric current. The MHD generator uses hot conductive ionized gas (a plasma) as the moving conductor. The mechanical dynamo, in contrast, uses the motion of mechanical devices to accomplish this.

Related publications (14)

Progress on the ITER Upper Launcher Control Systems

Chat with Graph Search

The design of the EC Upper Launcher and Ex-vessel waveguide systems for ITER

How Is Cold, Star-forming Gas in Galaxies Affected by Magnetic Fields?

Calculation of Stray Magnetic Field Effects on the Operation of the ITER Electron Cyclotron System