Studies of the pulse line ion accelerator
Studies of the pulse line ion accelerator
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DOI：
10.1109/pac.2007.4441102
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发表时间：
2007-06
期刊：
影响因子：
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通讯作者：
W. Waldron;L. Reginato;E. Henestroza;A. Friedman;R. Briggs
中科院分区：
文献类型：
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作者：
W. Waldron;L. Reginato;E. Henestroza;A. Friedman;R. Briggs
脉冲线离子加速器的概念是因为需要一种廉价的方法将强脉冲重离子束加速到高能量密度物理和热致密物质研究中感兴趣的区域。施加到螺旋脉冲线一端的脉冲功率驱动器产生加速和轴向限制重离子束脉冲的行波。这一概念已经在适度加速梯度的离子束中得到了验证。描述了具有恒定参数螺旋线的加速场景，其结果是单级的输出能量远远大于线路上的几百千伏峰值电压，目标是3-5 MeV/m的加速梯度。这种方法有可能将等效感应加速器的长度缩短到原来的1/6-1/10，同时简化了脉冲功率系统。原型硬件的性能一直受到真空绝缘子两端的高压局部放电的限制。台架测试和分析大大提高了放电阈值。使用各种实验配置的进一步研究也在计划之中。
The Pulse Line Ion Accelerator concept was motivated by the need for an inexpensive way to accelerate intense short pulse heavy ion beams to regimes of interest for studies of High Energy Density Physics and Warm Dense Matter. A pulse power driver applied to one end of a helical pulse line creates a traveling wave that accelerates and axially confines the heavy ion beam pulse. The concept has been demonstrated with ion beams at modest acceleration gradients. Acceleration scenarios with constant parameter helical lines are described which result in output energies of a single stage much larger than the several hundred kilovolt peak voltages on the line, with a goal of 3-5 MeV/m acceleration gradients. This method has the potential to reduce the length of an equivalent induction accelerator by a factor of 6-10 while simplifying the pulsed power systems. The performance of prototype hardware has been limited by high voltage partial discharges across the vacuum insulator. Bench tests and analysis have led to significantly improved discharge thresholds. Further studies using a variety of experimental configurations are planned.