Characterization of pseudosingle bunch kick-and-cancel operational mode

Physical Review Special Topics-accelerators and Beams Pub Date : 2015-12-18 DOI:10.1103/PHYSREVSTAB.18.120702

Changchun Sun, D. Robin, C. Steier, G. Portmann

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引用次数: 7

Abstract

Author(s): Sun, C; Robin, DS; Steier, C; Portmann, G | Abstract: © 2015 authors. Published by the American Physical Society. Pseudosingle-bunch kick-and-cancel (PSB-KAC) is a new operational mode at the Advanced Light Source of Lawrence Berkeley National Laboratory that provides full timing and repetition rate control for single x-ray pulse users while being fully transparent to other users of synchrotron radiation light. In this operational mode, a single electron bunch is periodically displaced from a main bunch train by a fast kicker magnet with a user-on-demand repetition rate, creating a single x-ray pulse to be matched to a typical laser excitation pulse rate. This operational mode can significantly improve the signal to noise ratio of single x-ray pulse experiments and drastically reduce dose-induced sample damage rate. It greatly expands the capabilities of synchrotron light sources to carry out dynamics and time-of-flight experiments. In this paper, we carry out extensive characterizations of this PSB-KAC mode both numerically and experimentally. This includes the working principle of this mode, resonance conditions and beam stability, experimental setups, and diagnostic tools and measurements.

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伪单束踢消工作模式的表征

作者:孙，C;罗宾,DS;Steier C;Portmann, G |摘要:©2015作者。由美国物理学会出版。伪单束踢-取消(PSB-KAC)是劳伦斯伯克利国家实验室先进光源的一种新的操作模式，它为单个x射线脉冲用户提供完整的定时和重复率控制，同时对同步辐射光的其他用户完全透明。在这种操作模式下，单个电子束周期性地从主束序列中被一个具有用户按需重复率的快速踢动磁铁移出，从而产生一个与典型激光激发脉冲率相匹配的单个x射线脉冲。这种工作模式可以显著提高单x射线脉冲实验的信噪比，大幅度降低剂量引起的样品损伤率。它极大地扩展了同步加速器光源进行动力学和飞行时间实验的能力。在本文中，我们从数值和实验两方面对这种PSB-KAC模式进行了广泛的表征。这包括该模式的工作原理，共振条件和光束稳定性，实验设置，诊断工具和测量。

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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来源期刊

Physical Review Special Topics-accelerators and Beams 物理-物理：核物理

自引率

0.00%

发文量

审稿时长

3-8 weeks

期刊介绍： Physical Review Special Topics - Accelerators and Beams (PRST-AB), is a peer reviewed, purely electronic journal, distributed without charge to readers and funded by contributions from national laboratories. It covers the full range of accelerator science and technology: subsystem and component technologies, beam dynamics; accelerator applications; and design, operation, and improvement of accelerators used in science and industry. This includes accelerators for high-energy and nuclear physics, synchrotron radiation production, spallation neutron sources, medical therapy, and intense beam applications.

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