Neutral beam injection is recognized as one of the most effective means of plasma heating.The preliminary data of beam power deposition in different electrodes during beam extraction are obtained on the EAST neutral b...Neutral beam injection is recognized as one of the most effective means of plasma heating.The preliminary data of beam power deposition in different electrodes during beam extraction are obtained on the EAST neutral beam injector test stand.The measurement of the cooling water temperature rise of accelerating electrodes is reported.The data given can guide the optimization of beam extraction parameters and decrease the damage to the accelerating electrodes following long pulse beam extraction.展开更多
Neutral beam injection heating is one of the main auxiliary heating methods in controllable nuclear fusion research. In the EAST neutral beam injector, a water flow calorimetry （WFC） system is applied to measure the...Neutral beam injection heating is one of the main auxiliary heating methods in controllable nuclear fusion research. In the EAST neutral beam injector, a water flow calorimetry （WFC） system is applied to measure the heat load on the electrode system of the ion source and the heat loading components of the beamline. Due to the heat loss in the return water pipe, there are some measuring errors for the current WFC system. In this paper, the errors were measured experimentally and analyzed theoretically, which lay a basis for the exact calculation of beam power deposition distribution and neutralization efficiency.展开更多
基金Supported by the National Natural Science Foundation of China under Grants No 11075183.
文摘Neutral beam injection is recognized as one of the most effective means of plasma heating.The preliminary data of beam power deposition in different electrodes during beam extraction are obtained on the EAST neutral beam injector test stand.The measurement of the cooling water temperature rise of accelerating electrodes is reported.The data given can guide the optimization of beam extraction parameters and decrease the damage to the accelerating electrodes following long pulse beam extraction.
基金supported by the National Magnetic Confinement Fusion Science Program of China(No.2013GB101001)the International Science&Technology Cooperation Program of China(No.2014DFG61950)
文摘Neutral beam injection heating is one of the main auxiliary heating methods in controllable nuclear fusion research. In the EAST neutral beam injector, a water flow calorimetry （WFC） system is applied to measure the heat load on the electrode system of the ion source and the heat loading components of the beamline. Due to the heat loss in the return water pipe, there are some measuring errors for the current WFC system. In this paper, the errors were measured experimentally and analyzed theoretically, which lay a basis for the exact calculation of beam power deposition distribution and neutralization efficiency.
