Beam dynamics at the main LEBT of RAON accelerator
Beam dynamics at the main LEBT of RAON accelerator
复制标题
RAON 加速器主 LEBT 的束流动力学
DOI：
10.3938/jkps.67.1328
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Ji
中科院分区：
文献类型：
--
作者：
H. Jin;Ji
韩国大田稀有同位素科学计划（RISP）的高强度稀有同位素加速器（RAON）被设计用于加速多电荷态束流。使用电子回旋共振离子源（ECR-IS）产生的离子束将通过主低能束传输（LEBT）系统传输到射频四极杆（RFID）。通过LEBT时，应保持横向束流尺寸和纵向发射度较小。此外，在多谐波聚束器（MHB）到多谐波聚束器入口处的主要LEBT匹配段处，将使用静电四极杆来执行在多谐波聚束器入口处所需的twiss参数的匹配。我们将简要回顾主要LEBT晶格的新方面，并将介绍主要LEBT匹配部分的光束匹配。此外，还将讨论各种误差对束流轨道的影响和畸变轨道的修正。
The high-intensity rare isotope accelerator (RAON) of the Rare Isotope Science Project (RISP) in Daejeon, Korea, has been designed to accelerate multiple-charge-state beams. The ion beams, which are generated by using an electron cyclotron resonance ion source (ECR-IS), will be transported through the main low energy beam transport (LEBT) system to the radio frequency quadrupole (RFQ). While passing the beams through the LEBT, we should keep the transverse beam size and longitudinal emittance small. Furthermore, the matching of required twiss parameter at the RFQ entrance will be performed by using electro-static quadrupoles at the main LEBT matching section which is from the multi-harmonic buncher (MHB) to the entrance of the RFQ. We will briefly review the new aspects of the main LEBT lattice, and the beam matching at the main LEBT matching section will be presented. In addition, the effects of various errors on the beam orbit and the correction of a distorted orbit will be discussed.