Concept

Cyclotron

Related publications (183)

Beam-cavity interactions in high power cyclotrons

The ring cyclotron of the Paul Scherrer Institute (PSI) accelerates an intense proton beam from 72MeV up to 590MeV. This happens in four cavities of very high quality factor, oscillating in the fundamental mode. The beam can excite parasitic oscillation mo ...

EPFL2004

The effect of electron transport on electron cyclotron current drive in tokamak plasmas

Petri Nikkola

The operation of the most promising concept for the future fusion rector, tokamak, relies on the generation of plasma current. Traditionally, this is created by magnetic induction which makes the tokamak operation pulsed. With electro-magnetic waves, in th ...

EPFL2004

In-beam mechanical testing of CuCrZr

In the ITER design, CuCrZr has been selected as the heat sink material for components of the first wall and the divertor. The objective of this work is to check the material fatigue performance when the CuCrZr alloy is cyclically deformed concurrently with ...

2004

Electron cyclotron current drive and suprathermal electron dynamics in the TCV tokamak

Olivier Sauter, Stefano Coda, Timothy Goodman, Stefano Alberti, Patrick Blanchard, Petri Nikkola

Electron cyclotron current drive (ECCD) is an important prospective tool for tailoring the current profile in nextstep devices. To fill the remaining gaps between ECCD theory and experiment, especially in the efficiency and localization of current drive, a ...

International Atomic Energy Agency2003

Modelling of the electron cyclotron current drive experiments in the TCV tokamak

Olivier Sauter, Stefano Coda, Timothy Goodman, Roland Behn, Petri Nikkola

With the very high electron cyclotron (EC) wave power density achieved in the TCV tokamak, more than 20 MW m(-3), quasilinear modelling predicts an electron cyclotron current drive (ECCD) efficiency well in excess to the experimental value, by up to a fact ...

2003

Method and device for irradiating ions in an ion cyclotron resonance trap with photons and electrons

Yury Tsybin

The present invention relates to a method and a device for irradiating ions in a ion cyclotron resonance (ICR) trap with photons and/or electrons. For electron irradn. a hollow electron emitter is used, through the hole of which a light beam can be sent in ...

2003

Experimental observations of mode-converted ion cyclotron waves in a tokamak plasma by phase contrast imaging

Yu Lin

The process of mode conversion, whereby an externally launched electromagnetic wave converts into a shorter wavelength mode(s) in a thermal plasma near a resonance in the index of refraction, is particularly important in a multi-ion species plasma near the ...

2003

Ion cyclotron range of frequencies mode conversion electron heating in deuterium-hydrogen plasmas in the Alcator C-Mod tokamak

Yu Lin

Localized direct electron heating (EH) by mode-converted (MC) ion cyclotron range of frequencies (ICRF) waves in D(H) tokamak plasmas has been clearly observed for the first time in Alcator C-Mod. Both on- and off-axis (high field side) mode conversion EH ...

2003

Control of sawteeth and triggering of NTMs with ion cyclotron resonance frequency waves in JET

Olivier Sauter

A new scenario to delay or prevent neoclassical tearing mode (NTM) onset is presented. By active sawtooth destabilization, short period and low amplitude sawteeth are generated, such that the sawtooth produced NTM seed island is reduced and the threshold n ...

2002

Full absorption of third harmonic ECH in TCV tokamak plasmas in the presence of second harmonic ECCD

Olivier Sauter, Stefano Coda, Timothy Goodman, Jean-Marc Moret, Stefano Alberti, Patrick Blanchard, Adriano Manini

An experimental study of the extraordinary mode (X mode) absorption at the third electron cyclotron harmonic frequency has been performed on the TCV tokamak in plasmas preheated by X mode at the second harmonic. Full single pass absorption of injected X3 p ...

2002

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