共查询到20条相似文献,搜索用时 109 毫秒
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2MeV直线感应加速器注入器系统由电子束产生器和脉冲功率系统组成。电子束产生器包括由感应腔组成的阴极电压叠加器、阳极电压叠加器和真空二极管及束输运系统。脉冲功率系统则包含初级功率源Marx、次级功率源Blumlein线和触发系统,其作用是为感应腔提供一个具有数十纳秒平顶宽度的高压脉冲,激发感应腔在感应腔间隙上获得一个加速电场。在2MeV注入器功率系统中,4个Blumlein线的充气开关是由发散装置的输出触发信号进行导通控制的。通过控制发散输出触发信号到达Blumlein线开关的时间,即可以实现Blumlein线开关在不同时间内触发导通,使Blumlein线依据所设定的时间顺序输出激励脉冲,从而在真空二极管上获得高压脉冲串。由于功率系统采用的是182C结构,即一根Blumlein线驱动两个感应腔,因此最多可以实现四脉冲串列。 相似文献
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ZHANG Kai-Zhi ZHANG Huang LONG Ji-Dong YANG Guo-Jun HE Xiao-Zhong WANG Hua-Cen 《中国物理C(英文版)》2008,32(10)
While an intense electron beam passes through the accelerating gaps of a linear induction accelerator,a strong wake field will be excited.In this paper a relatively simple model is established based on the interaction between the transverse magnetic wake field and the electron beam,and the numerical calculation in succession generates a magnetic wake field distribution along the accelerator and along the beam pulse as well.The axial electric wake field is derived based on the relation between field components of a resonant mode.According to some principles in existence,the influence of this field on the high voltage properties of the induction gap is analyzed.The Dragon-I accelerator is taken as an example,and its maximum electric wake field is about 17 kV/cm,which means the effect of the wake field is noticeable. 相似文献
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While an intense electron beam passes through the accelerating gaps of a linear induction accelerator, a strong wake field will be excited. In this paper a relatively simple model is established based on the interaction between the transverse magnetic wake field and the electron beam, and the numerical calculation in succession generates a magnetic wake field distribution along the accelerator and along the beam pulse as well. The axial electric wake field is derived based on the relation between field components of a resonant mode. According to some principles in existence, the influence of this field on the high voltage properties of the induction gap is analyzed. The Dragon-I accelerator is taken as an example, and its maximum electric wake field is about 17 kV/cm, which means the effect of the wake field is noticeable. 相似文献
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磁约束磁控溅射源的磁场设计 总被引:1,自引:0,他引:1
磁控溅射镀膜机中的磁场分布对靶材利用率有着重要影响。为了提高磁控溅射源的靶材利用率,设计组抛弃了传统的"跑道环"形式的磁场设计理念,而是将永磁体或电磁体分置溅射靶的两侧,使其在溅射靶表面上方产生磁约束(磁镜)磁场。本设计使用有限元分析方法对磁场进行仿真计算,通过模拟磁场计算结果和实测结果的比较,验证有限元方法的可靠性。Ansys有限元分析软件对磁场分布进行仿真模拟,大大简化了计算并缩短了设计周期。通过实验验证,磁约束磁场大大提高了靶材的利用率。 相似文献
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Karel Burm 《Physics letters. A》2008,372(41):6280-6283
The Paschen curve shows that the breakdown voltage over a gap is a non-linear function of the product of the gas pressure and the gap distance for plasmas which are generated inside an electric field driven source. The Paschen breakdown relationship does not depend on the applied frequency and covers secondary emission at the electrodes of the discharge. Adapting the Paschen curve, a breakdown curve for a time-dependent magnetic field, typical for inductively coupled plasmas which sources are without electrodes, is examined here. It is shown that in this case the magnetic field breakdown curve does depend on the applied frequency. 相似文献
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To cover a so-called terahertz gap in available sources of coherent electromagnetic radiation, the gyrotron with a pulsed solenoid producing up to a 40 T magnetic field has been designed, manufactured, and tested. At a 38.5 T magnetic field, the gyrotron generated coherent radiation at 1.022 THz frequency in 50 musec pulses. The microwave power and energy per pulse were about 1.5 kW and 75 mJ, respectively. Details of the gyrotron design, manufacturing, operation and measurements of output radiation are given. 相似文献