EBIS charge breeder for radioactive ion beams at ATLAS
EBIS charge breeder for radioactive ion beams at ATLAS
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ATLAS 的放射性离子束 EBIS 电荷增殖机
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
A. Pikin
中科院分区：
文献类型：
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作者：
P. Ostroumov;S. Kondrashev;R. Pardo;G. Savard;R. Vondrasek;J. Alessi;E. Beebe;A. Pikin
阿贡国家实验室ATLAS设施的加利福尼亚稀有同位素增殖器升级（CARIBU）的建设已经完成，并正在进行调试。在满负荷运行时，CARIBU设施将使用来自1居里（Ci） {sup 252}Cf源的裂变碎片。离子将被热化并被氦气捕集器收集成低能离子束，用等压线分离器分析质量，并在ATLAS中加速将电荷培育到更高的电荷态。为了达到能量E/A 10 MeV/u，应向ATLAS直线加速器注入电荷质量比（q/A） {ge} 1/7的离子。在第一阶段，现有的电子回旋共振（ECR）离子源将被用作电荷增殖器。气体捕集器输出处放射性离子束的最大强度不超过每秒10个离子。基于电子束离子源（EBIS）的电荷增殖器比ECR选项具有显著优势，其离子束强度高达每秒约10{sup 9}个离子，为进一步加速提供3-4倍的效率和明显更好的高电荷放射性离子束纯度。为CARIBU提出的EBIS项目将大量利用布鲁克海文国家实验室最近开发的最先进的EBIS技术。这将使我们能够降低项目成本和时间表，同时确保可靠的技术实现的尖端技术。相对于BNL的EBIS， CARIBU EBIS电荷增殖器（EBIS- cb）的一些参数将被放宽，以获得更高的可靠性和更低的成本。CARIBU电荷增殖器的技术性能将不会受到这种松弛的影响，并将为整个范围的放射性离子束提供高效率。本文的目的是介绍在ATLAS上用于放射性离子束的EBIS电荷增殖器的初步设计。«少
The construction of the Californium Rare Isotope Breeder Upgrade (CARIBU) for the Argonne National Laboratory ATLAS facility is completed and its commissioning is being performed. In its full capacity, the CARIBU facility will use fission fragments from a 1 Curie (Ci) {sup 252}Cf source. The ions will be thermalized and collected into a low-energy ion beam by a helium gas catcher, mass analyzed by an isobar separator, and charge bred to higher charge states for acceleration in ATLAS. To reach energies E/A 10 MeV/u, one should inject ions with charge-to-mass ratio (q/A) {ge} 1/7 into the ATLAS linac. In the first stage, the existing Electron Cyclotron Resonance (ECR) ion source will be used as a charge breeder. The maximum intensity of radioactive ion beams at the output of the gas catcher will not exceed 10{sup 7} ions per second. A charge breeder based on an Electron Beam Ion Source (EBIS) has significant advantages over the ECR option for ion beam intensities up to about 10{sup 9} ions per second, providing 3-4 times higher efficiency and significantly better purity of highly charged radioactive ion beams for further acceleration. The proposed EBIS project for CARIBU will heavily utilize state-of-the-art EBIS technology recentlymore » developed at Brookhaven National Laboratory. This will allow us to reduce both the project cost and timescale, simultaneously insuring reliable technical realization of the cutting-edge technology. Several parameters of the CARIBU EBIS charge breeder (EBIS-CB) will be relaxed with respect to the BNL EBIS in favor of higher reliability and lower cost. Technical performance of the CARIBU charge breeder will not suffer from such a relaxation and will provide high efficiency for a whole range of radioactive ion beams. The goal of this paper is to present the initial design of the EBIS charge breeder for radioactive ion beams at ATLAS.« less