Titus J B, Korepanov S, Tkachev A, Pirogov K, Knapp K
TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA.
Rev Sci Instrum. 2021 May 1;92(5):053520. doi: 10.1063/5.0043871.
The C-2W experiment produces advanced beam-driven field reversed configuration (FRC) plasmas, which are sustained in steady state utilizing variable energy neutral beams (15-40 keV, total power up to 21 MW), advanced divertors, end bias electrodes, and an active plasma control system. Since heating, current drive, and refueling from neutral beam injection are essential to FRC sustainment, it is crucial to have accurate measurements of the beam power being injected into the plasma. A new tungsten wire calorimeter has been designed, built, calibrated on a test stand, and implemented to make the first direct measurements of the time-average injected beam power into C-2W. This paper outlines the design of the diagnostic, along with calibration methods and experimental results.
C-2W实验产生先进的束流驱动场反向配置（FRC）等离子体，这些等离子体利用可变能量中性束（15 - 40 keV，总功率高达21兆瓦）、先进的偏滤器、端部偏置电极和有源等离子体控制系统维持在稳态。由于中性束注入的加热、电流驱动和燃料补充对于FRC的维持至关重要，因此准确测量注入等离子体的束功率至关重要。一种新型钨丝量热计已被设计、制造、在试验台上校准，并用于首次直接测量注入C-2W的时间平均束功率。本文概述了该诊断设备的设计、校准方法和实验结果。
