750 keV射频四极注入器束流动力学设计
Beam dynamics design of a 750 keV radio frequency quadrupole injector
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摘要: 描述了一台750 keV，201.25 MHz的射频四极注入器束流动力学设计。在考虑与35 MeV质子直线加速器匹配、功耗小、传输效率高等原则的基础上，提出了加速器的技术要求。给出了两套设计方案的主要参数和设计结果。分析了能散度、发射度、Twiss参数、注入流强和能量等参数在非理想匹配条件下对束流传输效率的影响。比较了两套方案的异同点。模拟计算结果表明，两套设计方案均可以满足物理要求，传输效率都在99.3%以上。Abstract: A 750 keV, 201.25 MHz radio frequency quadrupole accelerator was designed as the injector of the Beijing proton linac. The beam dynamics study of this accelerator is described. The main parameters and results of two designs are presented. The influences of non-ideal conditions of parameters such as energy dispersion, emittance, Twiss parameters, input current and energy on beam transmission efficiency are analyzed. The similarities and differences of the two designs are shown. The results of the beam dynamics simulation show that the two designs both satisfy the physics requirement.
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Key words:
- radio frequency quadrupole /
- accelerator /
- beam dynamics /
- transmission efficiency
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