SPS晶体辅助慢萃取实验结果
Experimental results of crystal-assisted slow extraction at the SPS
摘要：
自20世纪90年代以来，人们一直在探索通过硅弯曲晶体从超级质子同步加速器（SPS）中提取高能粒子的可能性。弯曲晶体的沟道效应可用于强烈偏转初级质子并将它们从同步加速器中射出。许多研究和实验已经进行了调查晶体沟道效应。120和270 GeV质子束的提取已经在SPS中通过位于环中的专用实验进行了演示。目前在SPS中，UA9实验正在进行研究，以评估使用弯曲硅晶体在高能加速器中引导粒子束的可能性。最近使用UA9基础设施进行了关于从SPS提取的可行性的研究，从长远来看，使用晶体有助于减轻SPS的缓慢提取诱导的激活。在本文中，粒子喷射到提取通道中的LSS 2使用弯曲的晶体已经安装在SPS的可能性。详细的概念，模拟和测量进行了光束，讨论了未来的前景之前。
英文摘要：
The possibility of extracting highly energetic particles from the Super Proton Synchrotron (SPS) by means of silicon bent crystals has been explored since the 1990's. The channelling effect of a bent crystal can be used to strongly deflect primary protons and eject them from the synchrotron. Many studies and experiments have been carried out to investigate crystal channelling effects. The extraction of 120 and 270 GeV proton beams has already been demonstrated in the SPS with dedicated experiments located in the ring. Presently in the SPS, the UA9 experiment is performing studies to evaluate the possibility to use bent silicon crystals to steer particle beams in high energy accelerators. Recent studies on the feasibility of extraction from the SPS have been made using the UA9 infrastructure with a longer-term view of using crystals to help mitigate slow extraction induced activation of the SPS. In this paper, the possibility to eject particles into the extraction channel in LSS2 using the bent crystals already installed in the SPS is presented. Details of the concept, simulations and measurements carried out with beam are presented, before the outlook for the future is discussed.
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