High-Current Single Bunch Electron Linear Accelerator
High-Current Single Bunch Electron Linear Accelerator
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大电流单束电子直线加速器
DOI：
10.1109/tns.1985.4334325
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发表时间：
1985
影响因子：
1.8
通讯作者：
M. Kawanishi
中科院分区：
文献类型：
--
作者：
S. Takeda;K. Tsumori;N. Kimura;T. Yamamoto;T. Hori;T. Sawai;J. Ohkuma;S. Takamuku;T. Okada;K. Hayashi;M. Kawanishi
为了将单束电荷从14 nC增加到60 nC，大阪大学isir对电子直线加速器的注入器进行了改造。用新建造的两个第12次谐波预聚束器和一个第6次谐波预聚束器取代了一个第6次谐波预聚束器。用一维圆盘模型计算了光束的聚束，并确定了亚谐预聚束器的最佳位置。亚谐预聚束器被浸没在螺线管磁场中，使电子束在通过漂移区的过程中受到限制。在24-34 MeV范围内，单束脉冲持续时间为16-20ps，最大带电时间为67nC，能量散度为0.7%-2.5%，重复率为单次激发到720pps。能量分布取决于电荷，在33 nC时，最小能量分布为0.7%。负责的单束25-45个NC用于日常工作中的实验。
An injector of an electron linear accelerator has been modified at ISIR of Osaka University in order to increase a single bunch charge from 14 nC to 60 nC. A 6th subharmonic prebuncher has been replaced with two 12th subharmonic prebunchers and a 6th subharmonic prebuncher which are newly constructed. A one-dimensional disk model has been used to calculate the bunching of the beam and to decide the optimum location of the subharmonic prebunchers. The subharmonic prebunchers are immersed in a solenoidal magnetic field so that the electron beam is confined during the travel through the drift region. The single bunch of 16 - 20 ps duration and up to 67 nC in charge, with the energy spread of 0.7 - 2.5 % over the range of 24 - 34 MeV, and a repetition rate from a single shot to 720 pps can be obtained. The energy spread depends on the charge and the minimum spread is 0.7 % at 33 nC. The single bunch of 25 - 45 nC in charge is used for the experiments in routine work.