A conventional positron source for international linear collider
A conventional positron source for international linear collider
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国际直线对撞机常规正电子源
DOI：
10.1016/j.nima.2011.12.032
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
他
中科院分区：
文献类型：
--
作者：
T.Omori;T.Takahashi;他
提出了一种在国际直线对撞机上实现几个GeV电子束驱动的常规正电子源的可能解决方案。利用300赫兹电子直线加速器产生脉冲长度可展宽的正电子，以固化靶的热负荷。ILC在脉冲长度为1ms的序列中需要大约2600个束。300赫兹直线加速器的每个脉冲产生大约130个束流，然后在63ms内产生2600个束流。以L波段捕获系统为例，讨论了驱动束能量、束流大小和靶厚度等参数的优化，以最大化捕获效率和减轻靶的热负荷。采用慢转钨圆盘作为正电子产生靶。
A possible solution to realize a conventional positron source driven by a several-GeV electron beam for the International Linear Collider is proposed. A 300Hz electron linac is employed to create positrons with stretching pulse length in order to cure target thermal load. ILC requires about 2600 bunches in a train which pulse length is 1ms. Each pulse of the 300Hz linac creates about 130 bunches, then 2600 bunches are created in 63ms. Optimized parameters such as drive beam energy, beam size, and target thickness, are discussed assuming a L-band capture system to maximize the capture efficiency and to mitigate the target thermal load. A slow rotating tungsten disk is employed as positron generation target.