arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.1328physics.acc-ph
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SSC -直线加速器中RFQ的粒子模拟

Particle-In-Cell Simulation of RFQ in SSC - Linac

Xiao Chen, He Yuan, Yuan You-Jin, Liu Yong, Xia Jia-Wen, Lu Yuan-Rong, Yuri Batygin

摘要:

设计了一台52 MHz射频四极直线加速器,作为SSC直线加速器系统(分离扇区回旋加速器注入器)的初始结构。设计注入能量为3.5keV/u,输出能量为143 keV/u。使用三维粒子网格程序BEAMPATH [1]进行了在CO2中的束流动力学研究。模拟结果表明,该结构在零电流模式和空间电荷主导模式下,束流传输效率稳定在95%以上。束流的横向和纵向加速质量都很好,很容易被漂移管直线加速器(DTL)接受。研究了叶片误差和空间电荷对束流参数的影响,确定了叶片加工和校准的工程公差。

英文摘要:

A 52MHz Radio Frequency Quadrupole (RFQ) linear accelerator (linac) is designed to serve as an initial structure for the SSC-linac system (injector into Separated Sector Cyclotron). The designed injection and output energy are 3.5 keV/u and 143 keV/u, respectively. Beam dynamics study in RFQ was done using 3-dimensional particle-in-cell code BEAMPATH [1]. Simulation results show that this RFQ structure is characterized by stable value of beam transmission efficiency (at least 95%) for both zero-current mode and for space charge dominated regime. The beam accelerated in RFQ has good quality in both transversal and longitudinal directions, and could be easily accepted by Drift Tube Linac (DTL). Effects of vane errors and of the space charge on beam parameters are studied as well to define the engineering tolerance for RFQ vane machining and alignment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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