强激光与粒子束, 2015, 27 (9): 095005, 网络出版: 2015-11-30  

1.2MV“天蝎”X光机杆箍缩二极管性能模拟

Simulation study on performances of rod-pinch diodeon 1.2 MV X-ray generator Scorpio
作者单位
1 中国工程物理研究院 研究生部, 四川 绵阳 621900
2 中国工程物理研究院 流体物理研究所, 四川 绵阳 621900
摘要
为了深入研究杆箍缩二极管的物理性能,采用蒙特卡罗方法对中国工程物理研究院流体物理研究所1.2 MV“天蝎”X光机的杆箍缩二极管进行模拟研究,包括PIC模拟和光电子输运模拟。着重分析了杆箍缩二极管结构参数与阻抗及出光剂量等的关系,发现阻抗和出光剂量与阴阳极半径比正相关,而出光剂量和杆探出长度正相关。提出一种阻止阴极盘后表面发射电子的设想,有望显著提高X射线辐射剂量。
Abstract
The impedance and X-ray radiography states are the main references of rod-pinch diode. In order to study the physical performances of rod-pinch diode, a PIC and photoelectron transport simulation based on Monte Carlo is used to simulate the physics of the 1.2 MV X-ray generator Scorpio rod pinch diode at Institute of Fluid Physics, CAEP. The influence of structure parameters, including anode-cathode radius rate and anode rod stretching out length, on the diode impedance and radiography is given. The simulation results show good uniformity with theory and experiment. A model is proposed to increase the radiation dose rate, which might be applied in the future design of rod-pinch diode.
参考文献

[1] 陈林,谢卫平,邓建军.X射线闪光照相杆箍缩二极管技术最新进展[J].强激光与粒子束, 2006, 18(4):643-647.

    Chen Lin, Xie Weiping, Deng Jianjun. Development of rod-pinch diode for flash X-ray radiography. High Power Laser and Particle Beams, 2006, 18(4):643-647

[2] Nelson D, Ormond E, Cordova S, et al. Cygnus performance in subcritical experiments[C]//16th IEEE International Conference on Pulsed Power. 2007:1089-1094.

[3] John R S, Randolph C, Robert D F, et al. Performance of the Cygnus X-ray source[C]//14th International Conference on High-Power Particle Beams. 2002:135-138.

[4] Bertrand E, Virgile B, Michel C, et al. Study and optimization of negative polarity rod pinch diode as flash radiography source at 4.5 MV[J]. Phys Plasmas, 2012, 19:093104.

[5] Weber B V, Cooperstein G, Hinshelwood D D, et al. The plasma-filled rod-pinch diode: A new technique to concentrate MeV electron beams to ultra-high power and energy densities[C]//14th International Conference on High-Power Particle Beams. 2002:191-194.

[6] 孙凤举,邱爱慈,杨海亮,等.感应电压叠加器驱动阳极杆箍缩二极管型脉冲X射线源[J].强激光与粒子束, 2010, 22(4):936-940.

    Sun Fengju, Qiu Aici, Yang Hailiang, et al. Pulsed X-ray source based on inductive voltage adder and rod pinch diode for radiography. High Power Laser and Particle Beams, 2010, 22(4):936-940

[7] 马勋,邓建军,姜苹,等.流体动力学实验用闪光X光机研究进展[J].强激光与粒子束, 2014, 26:010201.

    Ma Xun, Deng Jianjun, Jiang Ping, et al. Review of flash X-ray generator applied to hydrokinetical experiments. High Power Laser and Particle Beams, 2014, 26:010201

[8] 张鹏飞,孙凤举,杨海亮,等.40级串联FLTD驱动杆箍缩二极管的箍缩特性模拟[J].强激光与粒子束, 2013, 25(11):3065-3068.

    Zhang Pengfei, Sun Fengju, Yang Hailiang, et al. Electron beam pinch simulative study of rod-pinch diode driven by 40-stage FLTD module. High Power Laser and Particle Beams, 2013, 25(11):3065-3068

[9] Craig L M, Dale R W, David V R, et al. Detailed simulation of the CYGNUS rod pinch radiographic source[J]. IEEE Trans on Plasma Science, 2010, 38(10):2507-2513.

[10] 陈林,姜巍,谢卫平,等.离子对rod-pinch二极管工作特性的影响[J].强激光与粒子束, 2007, 19 (10):1747-1750.

    Chen Lin, Jiang Wei, Xie Weiping, et al. Effects of ions on rod-pinch diode performance. High Power Laser and Particle Beams, 2007, 19(10):1747-1750

[11] Cooperstein G, Boller J R, Commisso R J, et al. Theoretical modeling and experimental characterization of a rod-pinch diode[J]. Phys Plasmas, 2001, 8(10):4618-4636.

[12] 马成刚.闪光照相用Rod-pinch二极管性能研究[D].绵阳:中国工程物理研究院, 2006:1-51.

    Ma Chenggang. Study on performances of radiography rod-pinch diode. Mianyang: China Academy of Engineering Physics, 2006:1-51

[13] Oliver B V, Ottinger P F, Genoni T C, et al. Magnetically insulated electron flow with ions with application to the rod-pinch diode[J]. Phys Plasma, 2004, 11(8):3976-3991.

[14] Gao Yi, Qiu Aici, Zhang Zhong, et al. Research on pinching characteristics of electron beams emitted from different cathode surfaces of a rod-pinch diode[J]. Phys Plasmas, 2010, 17:073108.

王宇, 李洪涛, 王文斗, 邓建军, 刘金峰, 马成刚. 1.2MV“天蝎”X光机杆箍缩二极管性能模拟[J]. 强激光与粒子束, 2015, 27(9): 095005. Wang Yu, Li Hongtao, Wang Wendou, Deng Jianjun, Liu Jinfeng, Ma Chenggang. Simulation study on performances of rod-pinch diodeon 1.2 MV X-ray generator Scorpio[J]. High Power Laser and Particle Beams, 2015, 27(9): 095005.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!