1-MeV electrostatic ion energy analyzer

2007 IEEE Particle Accelerator Conference (PAC) Pub Date : 2007-06-25 DOI:10.1109/PAC.2007.4440035

F. Bieniosek, M. Leitner

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引用次数: 4

Abstract

We describe a high-resolution 90-degree cylindrical electrostatic energy analyzer for 1-MeV (singly ionized) heavy ions for experiments in the Heavy Ion Fusion Science Virtual National Laboratory (HIFS-VNL). By adding a stripping cell, the energy reach of the analyzer can be extended to 2 MeV. This analyzer has high dispersion in a first-order focus with bipolar deflection- plate voltages in the range of plusmn50 kV. We present calculations of vacuum-field beam trajectories, space- charge effects, field errors, and a multipole corrector. The corrector consists of 12 rods arranged in a circle around the beam. Such a corrector has excellent properties as an electrostatic quadrupole, sextupole, or linear combination. The improved energy diagnostic will allow measurements of beam energy spread, such as caused by charge exchange or temperature anisotropy, and better understanding of experimental results in planned longitudinal beam studies. Examples for such experiments include investigations of a beam patching pulser to correct errors in the head and tail of the transported beam bunch, and energy errors derived from ripples in the injector voltage waveform.

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1-MeV静电离子能量分析仪

我们描述了一个高分辨率的90度圆柱形静电能量分析仪，用于重离子聚变科学虚拟国家实验室(hfs - vnl)的1-MeV(单电离)重离子实验。通过增加一个剥离池，分析仪的能量范围可以扩展到2 MeV。该分析仪具有高色散的一阶焦点，双极偏转板电压在±50kv范围内。我们给出了真空场光束轨迹、空间电荷效应、场误差和多极校正器的计算。校正器由12根杆组成，在梁周围排成一圈。这种校正器作为静电四极、六极或线性组合具有优异的性能。改进的能量诊断将允许测量光束能量传播，例如由电荷交换或温度各向异性引起的，并更好地理解计划中的纵束研究的实验结果。这类实验的例子包括研究光束修补脉冲发生器，以纠正传输束束头部和尾部的误差，以及由注入器电压波形中的波纹引起的能量误差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2007 IEEE Particle Accelerator Conference (PAC)

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