In this method,a new type of thick aperture with a toroidal taper was made to block neutrons(I4MeV).A two-dimensional scintillator array was used as a sensitive neutron detector.

• 它针对中子射线穿透率高的特点，采用一个圆形双圆锥型厚孔径对聚变的靶目标产生高能中子射线投影，用塑胶闪体探测器接收。