The Alcator C-Mod lower hybrid current drive experiment transmitter and power system

IF 0.3 1区艺术学 0 MUSIC

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI:10.1109/FUSION.2002.1027631

M. Grimes, D. Gwinn, R. Parker, D. Terry, J. Alex

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引用次数: 9

Abstract

Alcator C-Mod is a high-field, high-density, diverted, compact tokamak, which, in its present form uses inductive current drive and is heated with 5 MW of ICRF auxiliary power. C-Mod is in the process of being upgraded with a 4.6 GHz Lower Hybrid heating and current drive system. The purpose of the experiment is to develop and explore the potential of "Advanced Tokamak Regimes", i.e., regimes with high bootstrap fraction (/spl sim/70%), high /spl beta//sub n/ (/spl sim/3) and high confinement (H/sub H//spl sim/1-2) under quasi-steady-state conditions. In this paper, an overview of the RF transmitter, high-voltage power supply and controls and protection systems for the Lower Hybrid Project is given. The transmitter will use twelve 250 kW klystrons operating simultaneously which will result in a total directed power of nearly 3 MW for a planned pulse width of 5 seconds. An expected upgrade of four additional klystrons will result in a total directed power of 4 MW. All klystrons will be powered in parallel by a single solid-state pulse-step-modulated (PSM) power supply with a rating of 50 kV and 208 amperes. Commissioning of the power supply is expected in February of 2002 with initial transmitter operation in late 2002.

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alcatator C-Mod低混合电流驱动实验变送器及电源系统

Alcator C-Mod是一种高场、高密度、分流、紧凑的托卡马克，它目前的形式是使用感应电流驱动，用5兆瓦的ICRF辅助功率加热。C-Mod正在升级4.6 GHz低混合加热和电流驱动系统。实验的目的是开发和探索“高级托卡马克体制”的潜力，即在准稳态条件下具有高自引导分数(/spl sim/70%)、高/spl beta//sub n/ (/spl sim/3)和高约束(H/sub H//spl sim/1-2)的体制。本文概述了低混合工程的射频发射机、高压电源和控制保护系统。发射机将使用12个250千瓦速调管同时工作，这将导致总定向功率接近3兆瓦，计划脉冲宽度为5秒。预计四个额外速调管的升级将导致总定向功率为4兆瓦。所有速调管将由单个固态脉冲步进调制(PSM)电源并联供电，额定电压为50千伏，208安培。预计电力供应将于2002年2月投入使用，发射机将于2002年底开始运行。

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

NINETEENTH CENTURY MUSIC MUSIC-

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： 19th-Century Music covers all aspects of Western art music between the mid-eighteenth and mid-twentieth centuries. We welcome--in no particular order--considerations of composers and compositions, styles, performance, historical watersheds, cultural formations, critical methods, musical institutions, ideas, and topics not named on this list. Our aim is to publish contributions to ongoing conversations at the leading edge of musical and multidisciplinary scholarship.