论文标题
CERN大型强子对撞机中部分剥离离子的准直
Collimation of partially stripped ions in the CERN Large Hadron Collider
论文作者
论文摘要
在物理范围以外的物理范围内，伽玛基倡议提出了将部分剥离的离子用作新型高强度光子源（LHC）中新型高强度光子源的驱动器。在2018年，LHC首次加速并存储了部分剥离$^{208} \ text {pb}^{81+} $ ions。发现该测试期间记录的准直效率非常低，因此，只有在常规的，次要的梁损耗发生时，只能存储非常低强度的光束，而不会触发梁转储。最严重的损失位于Betatron清洗插入的分散抑制器中。本文介绍了一项分析，以详细了解这些损失的来源。基于这种理解，开发了可能会显着提高清洁效率并通过部分分裂离子进行定期操作的可能缓解措施。
In the scope of the Physics Beyond Colliders studies, the Gamma-Factory initiative proposes the use of partially stripped ions as a driver of a new type of high-intensity photon source in CERN Large Hadron Collider (LHC). In 2018, the LHC accelerated and stored partially stripped $^{208}\text{Pb}^{81+}$ ions for the first time. The collimation system efficiency recorded during this test was found to be prohibitively low, so that only a very low-intensity beam could be stored without the risk of triggering a beam dump when regular, minor beam losses occur. The worst losses were localised in the dispersion suppressor of the betatron-cleaning insertion. This article presents an analysis to understand in detail the source of these losses. Based on this understanding, possible mitigation measures that could significantly improve the cleaning efficiency and enable regular operation with partially-stripped ions in the future are developed.
