Design and Development of a Power Supply System for NBI Test Stand of EAST

In order to meet the stringent requirements of fusion power supply for large-scale fusion devices, the J-TEXT engineering team has carried out key technology research and applications in several important directions of fusion power supply. This article presents the advances made by the J-TEXT engineering team in recent years in the following areas: (1) high-voltage power supply for auxiliary heating system; (2) breakdown protection device for auxiliary heating power supply; (3) magnetic field compatibility; (4) high-voltage pulsed power supply for field reversed configuration; (5) large physics experimental facility control system. The research backgrounds, technical progress, test results, applications, summaries and prospects are described in detail in each part. These innovative research results and valuable engineering experience can promote the progress of fusion power supply technology, and also lay a foundation for the development of power supplies with higher parameters in the future.

Section: High-voltage Power Supply For Auxiliary Heating Systemmentioning

confidence: 99%

Fusion power supply advances by the J-TEXT engineering team

Zhang¹,

Zhang²,

Wang³

et al. 2022

“…The power supply system consists of low voltage power supply and high power supply, and the speci-fication can be seen in Table 2 [25] . The filament and arc power supply works at the high voltage potential of the accelerator power supply, which has a solid state architecture.…”

Section: Power Supply Systemmentioning

confidence: 99%

Overview of Development Status for EAST-NBI System

Xie

et al. 2015

Self Cite

The neutral beam injection (NBI) system was developed on the Experimental Advanced Superconducting Tokamak (EAST) for plasma heating and current driving. This paper presents the brief history, design, development, and the main experimental results of the R&D of neutral beam injector on the test bed and on EAST. In particular, it will describe: (1) how the two beamlines with a total beam power of 8 MW were developed; (2) the design of the EAST-NBI system including the high power ion source, main vacuum chamber, inner components, beam diagnostic system and sub-system; (3) the experimental results of beamline-1 on the summer campaign of EAST in 2014 and, (4) the status of beamline-2 and the future plan of EAST-NBIs.

“…In order to carry out the physical and engineering research on the state of high-density and high-temperature plasma, the EAST (Experimental Advanced Superconducting Tokamak) is equipped with two neutral-beam injectors (NBIs) as the auxiliary heating and current drive system [1][2][3]. At the first step, a neutral-beam test stand was constructed and operated in 2012, which has a similar structure to the EAST-NBIs, but without the injection unit [4]. The neutral-beam test stand was used for the conditioning and testing of the EAST-NBI ion source, and to demonstrate the feasibility and reliability of the other key components.…”

Section: Introductionmentioning

confidence: 99%

Long-pulse power-supply system for EAST neutral-beam injectors

Liu

Jiang

Pan

2017

Self Cite

The long-pulse power-supply system equipped for the 4 MW beam-power ion source is comprised of three units at ASIPP (Institute of Plasma Physics, Chinese Academy of Sciences): one for the neutralbeam test stand and two for the EAST neutral-beam injectors (NBI-1 and NBI-2, respectively). Each power supply system consists of two low voltage and high current DC power supplies for plasma generation of the ion source, and two high voltage and high current DC power supplies for the accelerator grid system. The operation range of the NB power supply is about 80 percent of the design value, which is the safe and stable operation range. At the neutral-beam test stand, a hydrogen ion beam with a beam pulse of 150 s, beam power of 1.5 MW and beam energy of 50 keV was achieved during the long-pulse testing experiments. The result shows that the power-supply system meets the requirements of the EAST-NBIs fully and lays a basis for achieving plasma heating.