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介绍了偏压电荷收集器的结构,分析了利用其测量HPIB束流强度的原理,利用KARAT PIC软件模拟了偏压电荷收集器内部的电荷输运过程,模拟结果表明HPIB在偏压电荷收集器内部电荷中和而电流不中和,从而证实了电荷中和假设和这种装置测量HPIB的准确性。另外还分别对几何参数和偏置电压对偏压电荷收集器的影响进行了模拟,在德拜长度范围内,孔径的大小为0.6-0.8mm比较合适,偏压为-800V就可满足峰值能量为500keV HPIB的测量要求,实验验证了偏压大小与离子收集效率之间的关系。 相似文献
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The preliminary experimental results of the generation and diagnostics of highpower ion beams on FLASH II accelerator are reported, The high-power ion beams presently are being produced in a pinched diode, The method for enhancing the ratio of ion to electron current is to increase the electron residing time by pinching the electron flow, Furthermore, electron beam pinching can be combined with electron reflexing to achieve ion beams with even higher efficiency and intensity. The anode plasma is generated by anode foil bombarded with electron and anode foil surface flashover. In recent experiments on FLASH II accelerator, ion beams have been produced with a current of 160 kA and an energy of 500 keV corresponding to an ion beam peak power of about 80 GW. The ion number and current of high power ion beams were determined by monitoring delayed radioactivity from nuclear reactions induced in a ^12C target by the proton beams, The prompt γ-rays and diode bremsstrahlung X-rays were measured with a PIN semi-conductor detector and a plastic scintillator detector, The current density distribution of ion beam were measured with a biased ion collector array. The ion beams were also recorded with a CR-39 detector. 相似文献
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真空中绝缘材料沿面闪络实验研究的光学诊断方法 总被引:1,自引:0,他引:1
本文主要介绍了几种用于沿面闪络实验的光学诊断方法及其各自的特点 ,并给出了相应的实验结果和结论。 相似文献
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在“闪光二号”加速器产生的强流脉冲离子束(IPIB)调试过程中采用复合法进行参数诊断。主要测量质子与C靶的核反应所产生的放射性核素的活度,从而确定离子数目。采用PIN探测器和闪烁体光电倍增管(光电管)监测瞬发γ射线和轫致辐射X射线,用热释光探测器(TLD)监测漂移管外部的轫致辐射并确定了相应的屏蔽方法。采用偏压离子收集阵列测量离子束流密度分布,采用固体核径迹探测器CR-39初步测量离子束流。 相似文献
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