The Brookhaven National Laboratory electron beam ion source for RHIC
The Brookhaven National Laboratory electron beam ion source for RHIC
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DOI：
10.1063/1.3292937
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发表时间：
2010-02-01
影响因子：
1.6
通讯作者：
Wilinski, M.
中科院分区：
文献类型：
--
作者：
Alessi, J. G.;Barton, D.;Wilinski, M.
作为一个新的重离子预注入器，将提供相对论重离子对撞机和国家航空航天局空间辐射实验室的光束的一部分，一个新的电子束离子源（EBIS）的建设现在正在完成。该源基于成功的布鲁克海文国家实验室测试EBIS原型，设计用于产生所有离子种类的毫安级电流，q/m =（1/6）-（1/2）。该源的主要部件包括5 T、2 m长、204 mm直径的暖孔超导螺线管、设计为在10 A标称电流下工作的电子枪和设计为耗散类似于300 kW峰值功率的电子收集器。由于在阱区需要10（-10）托的压力，所以对真空系统的设计给予了仔细的注意。该源包括几个差分泵浦级，阱可以被烘烤到400 ℃，并且在阱区域中存在非蒸发性吸气剂条。电源包括15 A、15 kV电子收集器电源，以及用于改变离子注入、约束和提取的阱电势分布的16个电极中的大多数的快速可切换电源。EBIS源和所有EBIS电源位于一个隔离平台上，在离子提取过程中，该平台的脉冲最高可达100 kV。EBIS现在已经完全组装好，并将在最后的真空和电源测试后开始运行。EBIS组件的详细信息。
As part of a new heavy ion preinjector that will supply beams for the Relativistic Heavy Ion Collider and the National Aeronautics and Space Administration Space Radiation Laboratory, construction of a new electron beam ion source (EBIS) is now being completed. This source, based on the successful prototype Brookhaven National Laboratory Test EBIS, is designed to produce milliampere level currents of all ion species, with q/m=(1/6)-(1/2). Among the major components of this source are a 5 T, 2-m-long, 204 mm diameter warm bore superconducting solenoid, an electron gun designed to operate at a nominal current of 10 A, and an electron collector designed to dissipate similar to 300 kW of peak power. Careful attention has been paid to the design of the vacuum system, since a pressure of 10(-10) Torr is required in the trap region. The source includes several differential pumping stages, the trap can be baked to 400 C, and there are non-evaporable getter strips in the trap region. Power supplies include a 15 A, 15 kV electron collector power supply, and fast switchable power supplies for most of the 16 electrodes used for varying the trap potential distribution for ion injection, confinement, and extraction. The EBIS source and all EBIS power supplies sit on an isolated platform, which is pulsed up to a maximum of 100 kV during ion extraction. The EBIS is now fully assembled, and operation will be beginning following final vacuum and power supply tests. Details of the EBIS components are presented.