Design and operation of a prototype interaction point beam collision feedback system for the International Linear Collider
Design and operation of a prototype interaction point beam collision feedback system for the International Linear Collider
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DOI：
10.1103/physrevaccelbeams.21.122802
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发表时间：
2018-12
影响因子：
1.7
通讯作者：
R. Apsimon;D. Bett;N. Blaskovic Kraljevic;R. Bodenstein;T. Bromwich;P. Burrows;G. Christian;B. Constance;M. Davis;C. Perry;R. Ramjiawan
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文献类型：
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作者：
R. Apsimon;D. Bett;N. Blaskovic Kraljevic;R. Bodenstein;T. Bromwich;P. Burrows;G. Christian;B. Constance;M. Davis;C. Perry;R. Ramjiawan
为了在未来的国际正负电子直线对撞机（ILC）上实现和维持对撞，研制了一个高分辨率的粒子群内位置反馈系统。一个原型已经在日本高能加速器研究组织的加速器试验设施的引出线上进行了调试和测试。它包括一个带束流位置监测器（BPM）与模拟信号处理电子，一个定制的数字板进行反馈计算，和一个带状线冲击驱动的高电流放大器。闭环反馈延迟为148 ns。对于一个三聚束串与154纳秒聚束间距，反馈系统已被用来稳定的第三聚束到450 nm。在超过±60 μm的校正范围内，冲击响应是线性的，并且保持反馈性能。通过使用位于反馈系统下游的独立带状线BPM，已经确认了校正的传播。该系统已被证明，以满足BPM的分辨率，光束踢，和ILC的延迟要求。
A high-resolution, intratrain position feedback system has been developed to achieve and maintain collisions at the proposed future electron-positron International Linear Collider (ILC). A prototype has been commissioned and tested with a beam in the extraction line of the Accelerator Test Facility at the High Energy Accelerator Research Organization in Japan. It consists of a stripline beam position monitor (BPM) with analogue signal-processing electronics, a custom digital board to perform the feedback calculation, and a stripline kicker driven by a high-current amplifier. The closed-loop feedback latency is 148 ns. For a three-bunch train with 154 ns bunch spacing, the feedback system has been used to stabilize the third bunch to 450 nm. The kicker response is linear, and the feedback performance is maintained, over a correction range of over ±60 μm. The propagation of the correction has been confirmed by using an independent stripline BPM located downstream of the feedback system. The system has been demonstrated to meet the BPM resolution, beam kick, and latency requirements for the ILC.