Neutron Doses in the EAST Hall Under the NBI Plasma Discharge Mode

摘要

Nuclear fusion based on Tokamak has been well and attentively studied during the past years in many countries. There is no denying that some radiation particles and rays will be produced during each nuclear fusion discharge, especially neutrons which will be largely emitted out with high energies. To well obtain the neutrons' dose rates during the plasma discharge, He-3-based neutron detector is adopted. To fully obtain the neutron dose rates in the EAST hall, three neutron detectors are set at three monitoring sites which have long and different distances to the monitoring personal computer, and the monitoring system of neutrons based on the RS-485 differential communication mode is designed and set up. Then, based on the neutron dose rates saved by the monitoring system, the relations between the NBI's powers and neutron doses are obtained and schematically presented, also some discussions are made.