Brombin M, Spolaore M, Serianni G, Barzon A, Franchin L, Pasqualotto R, Pomaro N, Schiesko L, Taliercio C, Trevisan L
Consorzio RFX, Associazione Euratom-Enea sulla Fusione, Corso Stati Uniti 4, I-35127 Padova, Italy.
Max-Planck-Institut für Plasmaphysik, EURATOM Association, 1533, D-85740 Garching, Germany.
Rev Sci Instrum. 2014 Feb;85(2):02A715. doi: 10.1063/1.4831746.
A system of electrostatic sensors has been designed for the SPIDER (Source for the production of Ions of Deuterium Extracted from RF plasma) experiment, prototype RF source of the ITER NBI (neutral beam injection). A prototype of the sensor system was manufactured and tested at the BATMAN (BAvarian Test MAchine for Negative ions) facility, where the plasma environment is similar to that of SPIDER. Different aspects concerning the mechanical manufacturing and the signal conditioning are presented, among them the RF compensation adopted to reduce the RF effects which could lead to overestimated values of the electron temperature. The first commissioning tests provided ion saturation current values in the range assumed for the design, so the deduced plasma density estimate is consistent with the expected values.
已为ITER中性束注入（NBI）的原型射频源——SPIDER（从射频等离子体中提取氘离子的源）实验设计了一种静电传感器系统。该传感器系统的一个原型已在BATMAN（巴伐利亚负离子测试装置）设施中制造并进行了测试，该设施的等离子体环境与SPIDER的相似。文中介绍了与机械制造和信号调节相关的不同方面，其中包括为减少可能导致电子温度值高估的射频效应而采用的射频补偿。首次调试测试提供的离子饱和电流值在设计假定的范围内，因此推导得出的等离子体密度估计值与预期值一致。
