Publication

High Voltage Modulator for the TCV Diagnostic Neutral Beam Injector

Damien Fasel, Ugo Siravo, Luis Miguel Moreira
2025

Abstract

A Diagnostic Neutral Beam Injector (DNBI) is operated on the TCV Tokamak since 2000. Over the years, the plasma source and the ion optical system have benefited from several upgrades, whereas the power supply system remained almost unchanged. DNBI operation is now compromised by the obsolescence of both the power components and the control infrastructure. To allow for a long term reliable operation, a complete renew of the power supplies set is ongoing. It includes a high-speed current source rated 500 A/100 V/2 s for the arc-discharge plasma source (presented separately) and a High Voltage Modulator (HVM) rated 55kV/5 A/2 s.

Official source

https://infoscience.epfl.ch/entities/publication/1da21348-01b7-40e1-bc53-6ad21b9308b5

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Damien Fasel, Ugo Siravo, Luis Miguel Moreira
2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/1da21348-01b7-40e1-bc53-6ad21b9308b5

About this result

Related concepts (32)

Tokamak

A tokamak (ˈtoʊkəmæk; токамáк) is a device which uses a powerful magnetic field to confine plasma in the shape of a torus. The tokamak is one of several types of magnetic confinement devices being developed to produce controlled thermonuclear fusion power. , it was the leading candidate for a practical fusion reactor. Tokamaks were initially conceptualized in the 1950s by Soviet physicists Igor Tamm and Andrei Sakharov, inspired by a letter by Oleg Lavrentiev. The first working tokamak was attributed to the work of Natan Yavlinsky on the T-1 in 1958.

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.

Power factor

In electrical engineering, the power factor of an AC power system is defined as the ratio of the real power absorbed by the load to the apparent power flowing in the circuit. Real power is the average of the instantaneous product of voltage and current and represents the capacity of the electricity for performing work. Apparent power is the product of RMS current and voltage.

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High Voltage Modulator for the TCV Diagnostic Neutral Beam Injector

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