Physical Review Special Topics
Physical Review Special Topics
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物理评论专题
DOI：
10.1103/physrevstab.15.030101
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Y. Wakabayashi
中科院分区：
文献类型：
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作者：
M. Okada;K. Niki;Y. Hirayama;N. Imai;H. Ishiyama;S. C. Jeong;I. Katayama;H. Miyatake;M. Oyaizu;Y. X. Watanabe;S. Arai;H. Makii;Y. Wakabayashi
在重离子直线加速器装置上，通过安装一个紧凑的双间隙预聚束器和一个多层束流斩波器，实现了一种新的束流聚束技术。在直线加速器的上游对连续束进行聚束，可获得2 ~ 4 MHz的脉冲束流，其动能可达。约40%的连续束粒子连续聚集在一个单一的微聚束的时间宽度约为15 ns的全宽在十分之一的最大值。在群聚之前超过250 ns的背景粒子数被很好地抑制到群聚粒子数的1/3以下。该技术已被用于核天体物理实验中产生强流粒子束。
A novel beam-bunching technique has been implemented at a heavy-ion linear accelerator facility by installing a compact two-gap prebuncher and a multilayer beam chopper. A pulsed beam of 2 to 4 MHz, having kinetic energy up to, is realized by bunching acontinuous beam just upstream of the linac. Around 40% of the continuous beam particles are successively gathered in a single microbunch with a time width of around 15 ns in full width at one-tenth maximum. The number of background beam particles over 250 ns just before the bunched beam is well suppressed to less thanof the number of bunched particles. This technique has been adopted to generate intense-particle beams for nuclear astrophysics experiments.