开发和验证一个高带宽的同轴壁流监测器,用于亚纳秒光束束特性表征
Monika Phogat1,2, Jose V Mathew1,2, Rajesh Kumar1,2
1Ion Accelerator Development Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
The Review of scientific instruments
|October 22, 2025
概括
一个新的同轴壁流监测器 (C-WCM) 精确地测量了像LEHIPA这样的加速器的亚纳秒质子束束. 这种紧的双功能设备还可以作为光束位置监视器,增强加速器操作.
科学领域:
- 加速器物理学的物理学
- 颗粒束诊断 颗粒束诊断
- 高频电子产品 高频电子
背景情况:
- 高强度质子加速器需要精确的,非破坏性的光束特征.
- 现有的诊断系统在亚纳秒束束分析方面遇到了困难.
- 低能高强度质子加速器 (LEHIPA) 需要对其~100 ps RMS束束进行先进的诊断.
研究的目的:
- 设计,制造和验证一个紧的,宽带的,双功能的同轴壁流监测器 (C-WCM).
- 为像LEHIPA这样的加速器实现精确的亚纳秒束特性.
- 将集束长度和光束位置监测集成到一个单一的诊断工具中.
主要方法:
- 使用电磁模拟来优化C-WCM几何.
- 设计了一个没有铁的同轴结构,有八个高带宽输入通道.
- 进行了实验室射频表征 (S参数分析,TDR) 和使用20 MeV的LEHIPA质子束进行实验试验.
主要成果:
- 模拟预测了运行带宽大约为9 GHz.
- 实验室测试证实测量的带宽约为6GHz,与模拟结果一致.
- 使用LEHIPA光束进行实验验证,证明了有效的射频噪声隔离,强大的信号水平,以及~100 ps束结构的准确分辨率.
- 此外,C-WCM的设计还可以实现高性能光束位置监控.
结论:
- 开发的C-WCM是用于加速器应用的经过验证,紧的诊断工具.
- 它成功地集成了高保真度束长度和宽光圈位置监控.
- 这种多功能设备为加速器运行和光束动力学研究提供了显著的优势.
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