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已使用新设计方法设计高导流系数和高面积收敛系数实心注的电子枪。设计结果得出了: 导流系数分别为2.2×10~(-8)和5 × 10~(-8)安/伏~(3/2)和收敛系数分别为300和6的电子枪。用一般的方法设计已得到导流系数为0.1×10~(-6)安/伏~(3/2)、收敛比为1000。一般,在采用小于布里渊磁场理论值1.5倍的磁聚焦场时,上述各种电子枪通过漂移管的通过率已达到95%以上。本设计方法包含有:①按以前设计师成就作书面设计;②利用所设计的阴极和阳极,但聚焦极换成一组环状圆盘来制造模型;③应用脉冲的钟罩形电子注试验器,用小孔以及其后的分瓣收集极测量离开电子枪后的电子注,得到电流密度、轨迹方向(trajectory angle)和半径、轴向位置的函数关系;④修正环盘电位和阴极形状,以改进电子注的质量;⑤用电解槽确定简单电极形状以代替环状电极;⑥在密封的、阴极屏蔽的脉冲电子注试验器内作最后设计的试验,在试验器里电子法在均匀磁场中流过漂移管。此设计方法是相当准确和迅速的,并给出某些特定的设计图。
New design methods have been used to design electron guns with high conductivity and high area convergence coefficients. The results show that the electron gun with flow coefficient of 2.2 × 10 -8 and 5 × 10 -8 A / V ~ 3/2 and the convergence coefficients of 300 and 6 respectively. The average flow coefficient of 0.1 × 10 ~ (-6) A / V ~ (3/2) has been obtained by the general method. The convergence ratio is 1000. In general, the adoption of a magnetic focus field less than 1.5 times the theoretical value of Brillouin magnetic field, the passage of the above various electron guns through the drift tube has reached more than 95%. The design method includes: ① according to the previous designer's achievements as a written design; ② the use of the cathode and anode design, but the focus into a set of circular disc to create a model; ③ application of pulse bell-shaped electronic injection test The electron and electron injection after leaving the electron gun are measured by the small hole and the subsequent sub-collector, and the current density, the trajectory angle and the radius and the axial position are obtained as a function of the electric current; ④ the correction of the ring disk potential and the cathode shape, In order to improve the quality of the electronic injection; ⑤ with the electrolytic cell to determine the shape of a simple electrode instead of the ring electrode; ⑥ sealed in the cathode shielded pulse electronic injection tester for the final design of the test, the electronic method in a uniform magnetic field Through the drift tube. This design method is fairly accurate and rapid, and gives some specific design drawings.