Beam dynamic design of a high intensity injector for proton linac
Beam dynamic design of a high intensity injector for proton linac
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DOI：
10.1016/j.nima.2016.04.108
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发表时间：
2016-08
影响因子：
1.4
通讯作者：
W. Dou;Zhi-jun Wang;F. Jia;Yuan He;Zhi Wang;Yuanrong Lu
中科院分区：
文献类型：
--
作者：
W. Dou;Zhi-jun Wang;F. Jia;Yuan He;Zhi Wang;Yuanrong Lu
紧凑型室温注射器旨在将 100 mA 质子束从 45 keV 加速到 4.06 MeV，用于北京大学核物理与技术国家重点实验室拟建的高强度质子直线加速器。主要特点是射频四极管 (RFQ) 和漂移管直线加速器 (DTL) 部分合并为一件，总长度为 276 厘米。梁在横向上与紧凑的内部双合透镜相匹配，而不是在其之间的外部匹配部分。考虑到高占空比运行，该设计达到了高达 1.55 MV/m 的高平均加速梯度，传输效率高达 95.9%。由于已有可用的射频电源，工作频率选择为 200 MHz。该注入器结合了 150 厘米长的 4 叶片 RFQ 内部部分（45 keV 至 618 keV）和 126 厘米长的 H 型 DTL 部分（4.06 MeV）。一般来说，设计满足了项目要求的挑战。本文介绍了详细信息。
A compact room-temperature injector is designed to accelerate 100 mA proton beam from 45 keV to 4.06 MeV for the proposed high intensity proton linac at State Key Lab of Nuclear Physics and Technology in Peking university. The main feature is that the Radio Frequency Quadruple (RFQ) and the Drift Tube linac (DTL) sections are merged in one piece at the total length of 276 cm. The beam is matched in transverse directions with an compact internal doublet instead of an external matching section in between. The design has reached a high average accelerating gradient up to 1.55 MV/m with transmission efficiency of 95.9% at the consideration of high duty factor operation. The operation frequency is chose to be 200 MHz due to the already available RF power source. The injector combines a 150 cm long 4-vanes RFQ internal section from 45 keV to 618 keV with a 126 cm long H-type DTL section to 4.06 MeV. In general the design satisfy the challenges of the project requirements. And the details are presented in this paper.