Chinese Physics C > 2007, Vol. 31 > Issue(S1): 97-100

Metal Ion Production with RIKEN 18 GHz-ECRIS

Nishina Center for Accelerator Based Science, RIKEN, Hirosawa2-1, Wako, Saitama 351-0198, Japan2 SHI Acclcrator Service Ltd., Kitashinagawa5-9-11, Shinagawa, Tokyo 141-8686, Japan

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Abstract：
At RIKEN, three ECR ion sources (10GHz ECRIS, 18GHz ECRIS and liquid He-free SC-ECRIS) are operated as external ion sources of heavy ion accelerators. In the last year, multi-charged uranium ion beam was produced from 18GHz ECRIS by using UF ₆and the ²³⁸U ion was successfully accelerated by the accelerator complex which consists of the RFQ linear accelerator, RIKEN heavy ion linear accelerator (RILAC) and RIKEN ring cyclotron accelerator (RRC). The typical beam intensity of ²³⁸U ¹⁴⁺was about 2pμA on faraday cup after analysing magnet. ⁷⁰Zn beam was still supplied for the new super-heavy element search experiment with insertion method. Intense beam of ⁷⁰Zn ¹⁶⁺was produced for long term (～43 days) without vacuum break and remarkably low material consumption rate (～100μgr/h). We already supplied Zn beam longer than 200 days for this experiment. ⁴⁸Ca ion was also produced by insertion method using ⁴⁸CaO rod for the nuclear physics experiment. In this contribution, we will present ion source parameter and techniques for production of each of the metal ions.

References

[1]

. Yano Y. Proceedings of the 17th International Conference on Cyclotron and Their Applications, 2004. 1692. Pardo R et al. Rev. Sci. Instrum., 2004, 75: 14273. Wolf B. In Handbook of Ion Sources, edited by B. Wolf (CRC, London, 1995) p3414. Geller R. Electron Cyclotron Resonance Ion Source and ECR Plasmas (IOP, Bristol, 1996) p3895. Wolf B. in Handbook of Ion Sources, edited by B. Wolf (CRC, London, 1995) p3376. Morita K et al. J. Phys. Sci. Jpn., 2004, 73: 25937. Geller R. Electron Cyclotron Resonance Ion Sources and ECR Plasma (IOP, Bristol, 1996) p3838. Higurashi Y et al. Jpn. J. Appl. Phys., 2005, 44: 81389. Kidera M et al. Proceedings of the 15th Int. Workshop on ECR Ion Source, JYFL Research Rep., 2002, 4: 74-7610. Nakagawa T et al. Nucl. Instrum. Methods, 1997, A396: 911. Drentje A et al. Rev. Sci. Instrum., 2000, 71: 62312. Wutte D et al. Rev. Sci. Instrum., 2002, 73: 521

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M.Kidera ¹, T.Nakagawa ¹, T.Kageyama ¹, Y.Higurashi ¹,
H.Haba ¹, T.Aihara ², T.Ohki ², K.Kobayashi ², A.Goto ¹and Y.Yano ¹. Metal Ion Production with RIKEN 18 GHz-ECRIS[J]. Chinese Physics C, 2007, 31(S1): 97-100.

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Received: 2007-05-30
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Metal Ion Production with RIKEN 18 GHz-ECRIS

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Nishina Center for Accelerator Based Science, RIKEN, Hirosawa2-1, Wako, Saitama 351-0198, Japan2 SHI Acclcrator Service Ltd., Kitashinagawa5-9-11, Shinagawa, Tokyo 141-8686, Japan

Received Date:2007-05-30
Accepted Date:1900-01-01
Available Online:2007-01-03

Abstract:At RIKEN, three ECR ion sources (10GHz ECRIS, 18GHz ECRIS and liquid He-free SC-ECRIS) are operated as external ion sources of heavy ion accelerators. In the last year, multi-charged uranium ion beam was produced from 18GHz ECRIS by using UF₆and the²³⁸U ion was successfully accelerated by the accelerator complex which consists of the RFQ linear accelerator, RIKEN heavy ion linear accelerator (RILAC) and RIKEN ring cyclotron accelerator (RRC). The typical beam intensity of²³⁸U¹⁴⁺was about 2pμA on faraday cup after analysing magnet.⁷⁰Zn beam was still supplied for the new super-heavy element search experiment with insertion method. Intense beam of⁷⁰Zn¹⁶⁺was produced for long term (～43 days) without vacuum break and remarkably low material consumption rate (～100μgr/h). We already supplied Zn beam longer than 200 days for this experiment.⁴⁸Ca ion was also produced by insertion method using⁴⁸CaO rod for the nuclear physics experiment. In this contribution, we will present ion source parameter and techniques for production of each of the metal ions.