面向较低强度束流的径向耦合同轴快速法拉第杯设计的研究与改进
Study and improvements of a radially coupled coaxial Fast Faraday cup design towards lower intensity beams
AI总结:
本文改进径向耦合同轴快速法拉第杯设计,通过粒子模拟和时域电磁仿真优化较低强度离子束的纵向电荷测量,并分析抑制二次电子发射畸变的策略。
摘要:
文献[1]中提出了一种用于高强度非相对论质子束的径向耦合同轴快速法拉第杯设计。本文讨论了在相对较低强度离子束背景下对该设计的改进,用于纵向电荷分布测量。针对即将在新德里 IUAC 开展的高流强注入器计划[2,3],本文讨论了新设计的粒子模拟(Particle-in-cell)和时域电磁仿真,重点关注避免场稀释,同时为相对较低强度离子束产生足够信号。文中还估计了二次电子发射引起的分布畸变,并讨论了抑制这些畸变的策略。
英文摘要:
A radially-coupled coaxial fast Faraday cup design was presented in [1] for high-intensity non-relativistic proton beams. In this work, we discuss a modification of that design in the context of a relatively lower intensity ion beam for longitudinal charge profile measurements. Particle-in-cell and time domain electromagnetic simulations of the new design with a focus on avoiding field dilution while generating enough signal for relatively lower intensity ion beams at the upcoming High Current Injector Programme at IUAC, New Delhi [2,3] is discussed. Profile distortions from secondary electron emission are estimated and strategies to suppress them are discussed.
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