Overview of neutral beam injectors for plasma heating and diagnostics developed at Budker INP

IF 2.1 3区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Journal of Plasma Physics Pub Date : 2024-05-14 DOI:10.1017/s0022377824000278

I. Shikhovtsev, Alexander Ivanov, V. Davydenko, Yurii I. Belchenko, G. Abdrashitov, Viktor Belov, Timur Akhmetov, V. Amirov, A. Brul, Peter Deichuli, N. Deichuli, A. Donin, A. Dranichnikov, R. Finashin, D. Gavrisenko, A. Gorbovsky, Valerian Kapitonov, V. Kolmogorov, Alexey Kondakov, I. Maslakov, V. Oreshonok, V. Rashchenko, A. Sanin, Alexey Sorokin, O. Sotnikov, N. Stupishin, R. Vakhrushev, V. Vointsev

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Abstract

An overview of the neutral beam injectors developed at the Budker Institute of Nuclear Physics in Novosibirsk during the last 10 years is presented. These neutral injectors are used for plasma diagnostics, heating and current drive in modern fusion devices with magnetic confinement. An arc or a radio-frequency (RF) discharge generates a plasma in the ion sources of the injectors, and a positive hydrogen or deuterium ion beam is extracted and accelerated by a multiaperture ion-optical system (IOS). The accelerated ion beam is converted into a neutral one in a gas target. The precision multiaperture IOS with spherically concave electrodes provides ballistic focusing of the neutral beam. The high-energy, high-power beam injector based on negative ions, which is currently under development, is described as well. It comprises a RF negative ion source and a wide-aperture electrostatic accelerator separated from the source by a low-energy beam transport line, thereby improving the injector reliability.

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布德克国际物理研究所开发的用于等离子体加热和诊断的中性束注入器概览

本文概述了新西伯利亚布德克核物理研究所（Budker Institute of Nuclear Physics in Novosibirsk）在过去十年中开发的中性束注入器。这些中性束注入器用于现代磁约束聚变装置中的等离子体诊断、加热和电流驱动。电弧或射频（RF）放电会在注入器的离子源中产生等离子体，并通过多孔径离子光学系统（IOS）提取和加速正氢或氘离子束。加速后的离子束在气体靶中转化为中性离子束。带有球形凹面电极的精密多孔离子光学系统可对中性离子束进行弹道聚焦。此外，还介绍了目前正在开发的基于负离子的高能量、高功率射束器。它包括一个射频负离子源和一个宽孔径静电加速器，通过一条低能束传输线与负离子源隔开，从而提高了注入器的可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Plasma Physics 物理-物理：流体与等离子体

CiteScore

3.50

自引率

16.00%

发文量

106

审稿时长

6-12 weeks

期刊介绍： JPP aspires to be the intellectual home of those who think of plasma physics as a fundamental discipline. The journal focuses on publishing research on laboratory plasmas (including magnetically confined and inertial fusion plasmas), space physics and plasma astrophysics that takes advantage of the rapid ongoing progress in instrumentation and computing to advance fundamental understanding of multiscale plasma physics. The Journal welcomes submissions of analytical, numerical, observational and experimental work: both original research and tutorial- or review-style papers, as well as proposals for its Lecture Notes series.