Publication

Experimental study of high power mm-waves scattering by plasma turbulence in TCV plasmas

Timothy Goodman, Stefano Alberti, Ivo Furno, Marcelo Baquero Ruiz, Oulfa Chellaï, Gennady Plyushchev, Fabian Manke
2017
Conference Papers

Abstract

Understanding the propagation of high power mm-wave in plasmas is of tremendous importance in the route to fusion considering their extensive use in magnetically confined fusion devices. Mm-beams, launched from the outside of the vessel must propagate through plasma edge-turbulence before reaching their target region. Until recently, the effect of edge-turbulence on the beam propagation was neglected, but it has been estimated for ITER that it could lead to significant differences in the time-averaged and instantaneous beam profiles, leading to a loss of efficiency in their use. In this paper, we present first direct experimental measurements of high power beam after propagation in simple magnetized toroidal plasmas in TCV.

Official source

https://infoscience.epfl.ch/entities/publication/f862e10b-6ca1-4299-adcc-292f766a32e5

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Timothy Goodman, Stefano Alberti, Ivo Furno, Marcelo Baquero Ruiz, Oulfa Chellaï, Gennady Plyushchev, Fabian Manke
2017
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f862e10b-6ca1-4299-adcc-292f766a32e5

About this result

Related concepts (16)

Magnetic confinement fusion

Magnetic confinement fusion is an approach to generate thermonuclear fusion power that uses magnetic fields to confine fusion fuel in the form of a plasma. Magnetic confinement is one of two major branches of fusion energy research, along with inertial confinement fusion. The magnetic approach began in the 1940s and absorbed the majority of subsequent development. Fusion reactions combine light atomic nuclei such as hydrogen to form heavier ones such as helium, producing energy.

Fusion power

Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions. In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. Devices designed to harness this energy are known as fusion reactors. Research into fusion reactors began in the 1940s, but as of 2023, no device has reached net power. Fusion processes require fuel and a confined environment with sufficient temperature, pressure, and confinement time to create a plasma in which fusion can occur.

Aneutronic fusion

Aneutronic fusion is any form of fusion power in which very little of the energy released is carried by neutrons. While the lowest-threshold nuclear fusion reactions release up to 80% of their energy in the form of neutrons, aneutronic reactions release energy in the form of charged particles, typically protons or alpha particles. Successful aneutronic fusion would greatly reduce problems associated with neutron radiation such as damaging ionizing radiation, neutron activation, reactor maintenance, and requirements for biological shielding, remote handling and safety.

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