标题： 低能加速器中的丝扫描仪 显示英文标题

标题： Wire scanners in low energy accelerators

摘要： 高速丝扫描仪如今被视为高能同步加速器标准仪器的一部分。 将它们的应用扩展到低能同步加速器中，其中库仑散射可能很重要，且横向束流尺寸较大，这会引入新的复杂因素，包括束流对丝的加热、次级粒子簇射的组成以及检测装置中的几何考虑。 处理这些效应的主要问题是，由高能初级束流在薄碳丝中产生次级粒子的过程难以用解析方式描述。 我们在此呈现对此过程的完整蒙特卡罗模拟的新结果，提供了关于丝中沉积热量、次级粒子类型和能量谱以及作为初级束流能量函数的角依赖性的信息。 这些结果用于推导低能加速器中使用丝扫描仪的限制。 显示英文摘要

摘要： Fast wire scanners are today considered as part of standard instrumentation in high energy synchrotrons. The extension of their use to synchrotrons working at lower energies, where Coulomb scattering can be important and the transverse beam size is large, introduces new complications considering beam heating of the wire, composition of the secondary particle shower and geometrical consideration in the detection set-up. A major problem in treating these effects is that the creation of secondaries in a thin carbon wire by a energetic primary beam is difficult to describe in an analytical way. We are here presenting new results from a full Monte Carlo simulation of this process yielding information on heat deposited in the wire, particle type and energy spectrum of secondaries and angular dependence as a function of primary beam energy. The results are used to derive limits for the use of wire scanners in low energy accelerators.