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MOA1 |
High intensity highly charged ion beams production and operation at IMP |
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- L.T. Sun, B.M. Wu, C. Qian, E.M. Mei, H.W. Zhao, J.B. Li, J.D. Ma, L. Zhu, L.B. Li, L.X. Li, S.J. Zheng, W. Lu, W. Wu, W.H. Zhang, X.J. Ou, X.Z. Zhang, Y.C. Feng
IMP/CAS, Lanzhou, People’s Republic of China
- X. Wang
PSI, Villigen PSI, Switzerland
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Funding: National Natural Science Foundation of China (Grant Nos. 12025506, 11427904)
Charged by the existing operation facility HIRFL and HIAF one of the next generation heavy ion facilities under construction, high intensity high-charge state heavy ion beams production is in the high priority of research and development. For this purpose, several high performance ECR ion sources have been successively developed and put in routine operation. The recently developed FECR or the First 4th generation ECR ion source has employed the cutting-edge technologies for the development of a hybrid superconducting magnet using Nb₃Sn and NbTi superconductors. Operating at 28-45 GHz, FECR will give its first plasma and intense beam production. Other than ion sources development, new technologies development and new insights into high performance ECR ion source have led to increasingly ion beam intensities increase in both cw or pulsed modes. In this talk, high performance ion source development will be presented. A general review of the recent high intensity ion beam production progress at IMP and the routine operation for heavy ion accelerators will be made.
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Slides MOA1 [9.880 MB]
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TUP12 |
A novel design of superconducting magnet for ECR ion source |
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- E.M. Mei
IMP/CAS, Lanzhou, People’s Republic of China
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Since the powerful capability of producing high charge state ions for heavy ions and the long lifetime of the ECR ion source is deemed one of the most robust ion source types. So far, the 3rd generation ECR built with NbTi superconductor has a wonderful performance reference to the ECR used by LBNL and IMPCAS for a long time. However, this type of ECR has not got a well spread and further development either in accelerator systems or in other areas. The reason is its inefficiency of electromagnetic design and the complexity of mechanical structure design and technical realization. Aim to conquer this embarrassing situation of the 3rd ECR magnet. This paper proposes a novel structure design that combines minimal layers of solenoids and Discrete-Cosine-Theta coils that are embedded in the machined grooves. Besides the high magnetic field generation efficiency, this structure can also reduce the accumulation of the coils’ Lorentz forces. The details of the electromagnetic mechanical design of this new magnet structure will be described in this paper.
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Poster TUP12 [0.701 MB]
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reference for this paper using
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