Cheon MunSeong, Kim Junghee
National Fusion Research Institute, Daejeon 305-806, South Korea.
Rev Sci Instrum. 2015 Aug;86(8):083509. doi: 10.1063/1.4929386.
A Cherenkov-type neutron detector was newly developed and neutron measurement experiments were performed at Korea Superconducting Tokamak Advanced Research. It was shown that the Cherenkov neutron detector can monitor the time-resolved neutron flux from deuterium-fueled fusion plasmas. Owing to the high temporal resolution of the detector, fast behaviors of runaway electrons, such as the neutron spikes, could be observed clearly. It is expected that the Cherenkov neutron detector could be utilized to provide useful information on runaway electrons as well as fusion reaction rate in fusion plasmas.
一种切伦科夫型中子探测器被新研发出来，并在韩国超导托卡马克先进研究装置上进行了中子测量实验。结果表明，切伦科夫中子探测器能够监测来自以氘为燃料的聚变等离子体的时间分辨中子通量。由于该探测器具有高时间分辨率，能够清晰地观测到逃逸电子的快速行为，如中子尖峰。预计切伦科夫中子探测器可用于提供有关聚变等离子体中逃逸电子以及聚变反应率的有用信息。
