Top-up safety simulation of injection beam for Shanghai Synchrotron Radiation Facility storage ring
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摘要: 针对恒流注入过程中在同步辐射光闸开启情况下的辐射安全问题，对注入电子束轨迹进行了模拟跟踪计算，考察电子束在什么样的极端情况下会从光束线通道打出造成辐射安全事故。束流动力学模拟采用Accelerator Toolbox (AT)程序，正向跟踪电子轨迹。在不丢失任何可能性的前提下，放大入射电子束相空间，减小跟踪距离，简化计算。通过模拟结果得到机器安全联锁保护条件，为保障安全的恒流注入提供依据。Abstract: For the safety issue for top-up injection, the trajectory of the injection beam was tracked to find out in what kinds of conditions the injection beam would get through the synchrotron light beam pipe and cause radiation hazards. The forward tracking method is used with Accelerator Toolbox (AT) code. We enlarge injection beam phase space volume and reduce the beam line element to simplify the calculation while covering all the possibility. According to this simulation, the interlock criteria are set up for top-up operation.
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