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- X. D. Yang, D. Q. Gao, Y. He, G. H. Li, J. Li, Y. Liu, L. J. Mao, R. S. Mao, M. T. Song, J. W. Xia, G. Q. Xiao, J. C. Yang, X. T. Yang, Y. J. Yuan, W.-L. Zhan, W. Zhang, H. W. Zhao, T. C. Zhao, J. H. Zheng, Z. Z. Zhou
IMP, Lanzhou
- V. V. Parkhomchuk
BINP SB RAS, Novosibirsk
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A new generation cooler was commissioned in CSRm, 12C6+ beam with energy 7MeV/u was delivered by a small cyclotron SFC, then injected into CSRm by stripping mode, the average pulse particle number is about 6.8×108 in one injection, with the help of electron cooling of partial hollow electron beam, 3×109 particle were accumulated in the ring after 10 times injection in 10 seconds, and 2×109 particle were accelerated to final energy 1GeV/u, the momentum spread and the lifetime of ion beam were measured roughly. The work point of ring was monitored during the process of acceleration. The close-orbit correction was done initially. The momentum cooling time was about 0.3sec. About 1.6×1010 particle was stored in the ring after longer time accumulation.
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