用于ISAC/TRIUMF的OLIS设施的多电荷离子源（Supernanogan）。

Jayamanna K, Wight G, Gallop D, Dube R, Jovicic V, Laforge C, Marchetto M, Leross M, Louie D, Laplante R, Laxdal R, McDonald M, Wiebe G J, Wang V, Yan F

TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.

Rev Sci Instrum. 2010 Feb;81(2):02A331. doi: 10.1063/1.3303819.

The Off-Line Ion Source (OLIS) [K. Jayamanna, D. Yuan, T. Kuo, M. MacDonald, P. Schmor, and G. Dutto, Rev. Sci. Instrum. 67, 1061 (1996); K. Jayamanna, Rev. Sci. Instrum. 79, 02711 (2008)] facility consists of a high voltage terminal containing a microwave cusp ion source, either a surface ion source or a hybrid surface-arc discharge ion source [K. Jayamanna and C. Vockenhuber, Rev. Sci. Instrum. 79, 02C712 (2008)], and an electrostatic switch that allows the selection of any one of the sources without mechanical intervention. These sources provide a variety of +1 beams up to mass 30 for Isotope Separator and ACcelerator (ISAC) [R. E. Laxdal, Nucl. Instrum. Methods Phys. Res. B 204, 400 (2003)] experiments, commissioning the accelerators, setting up the radioactive experiments, and for tuning the beam lines. The radio frequency quadrupole (RFQ) [M. Marchetto, Z. T. Ang, K. Jayamanna, R. E. Laxdal, A. Mitra, and V. Zvyagintsev, Eur. Phys. J. Spec. Top. 150, 241 (2005)] injector accelerator is a constant velocity machine designed to accept only 2 keV/u and the source extraction energy is limited to 60 kV. Further stripping is then needed downstream of the RFQ to inject the beam into the drift tube linac [M. Marchetto, Z. T. Ang, K. Jayamanna, R. E. Laxdal, A. Mitra, and V. Zvyagintsev, Eur. Phys. J. Spec. Top. 150, 241 (2005)] accelerator that requires A/q up to 6. Base on this constraints a multicharge ion source capable to deliver beams above mass 30 with A/q up to 6 was needed in order to reach full capability of the ISAC facility. A Supernanogan [C. Bieth et al., Nucleonika 48, S93 (2003)] multicharge ion source was then purchased from Pantechnik and was installed in the OLIS terminal. Commissioning and performance of the Supernanogan with some results such as emittance dependence of the charge states as well as charge state efficiencies are presented.

离线离子源（OLIS）[K. 贾亚曼纳、D. 袁、T. 郭、M. 麦克唐纳、P. 施莫尔和G. 杜托，《科学仪器评论》67, 1061 (1996); K. 贾亚曼纳，《科学仪器评论》79, 02711 (2008)] 装置由一个高压终端组成，该终端包含一个微波尖点离子源、一个表面离子源或一个混合表面 - 电弧放电离子源 [K. 贾亚曼纳和C. 沃肯胡伯，《科学仪器评论》79, 02C712 (2008)]，以及一个静电开关，该开关允许在无需机械干预的情况下选择任何一个离子源。这些离子源为同位素分离器和加速器（ISAC）[R. E. 拉克达尔，《核仪器与方法：物理研究B》204, 400 (2003)] 实验提供各种质量数高达30的 +1 束流，用于加速器调试、放射性实验设置以及束流线调谐。射频四极杆（RFQ）[M. 马尔切托、Z. T. 昂、K. 贾亚曼纳、R. E. 拉克达尔、A. 米特拉和V. 兹维亚金采夫，《欧洲物理杂志：专题》150, 241 (2005)] 注入器加速器是一种恒速机器，设计为仅接受2 keV/u 的束流，且离子源提取能量限制为60 kV。然后需要在RFQ下游进行进一步的剥离，以便将束流注入漂移管直线加速器 [M. 马尔切托、Z. T. 昂、K. 贾亚曼纳、R. E. 拉克达尔、A. 米特拉和V. 兹维亚金采夫，《欧洲物理杂志：专题》150, 241 (2005)]，该加速器要求 A/q 高达6。基于此限制，需要一个能够提供质量数高于30且 A/q 高达6的束流的多电荷离子源，以实现ISAC装置的全部功能。随后从潘泰克尼克公司购买了一个Supernanogan [C. 比埃特等人，《核子学》48, S93 (2003)] 多电荷离子源，并安装在OLIS终端。本文介绍了Supernanogan的调试和性能以及一些结果，如发射度对电荷态的依赖性以及电荷态效率。