1. Measurement of the lifetime and the proportion of 12C3+ ions in stored relativistic ion beams as a preparation for laser cooling experiments at the CSRe.
- Author
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Wang, H.B., Wen, W.Q., Huang, Z.K., Zhang, D.C., Hai, B., Zhu, X.L., Zhao, D.M., Yang, J., Li, J., Li, X.N., Mao, L.J., Mao, R.S., Wu, J.X., Yang, J.C., Yuan, Y.J., Eidam, L., Winters, D., Beck, T., Kiefer, D., and Rein, B.
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LASER cooling , *HEAVY ions , *STORAGE rings , *ION beams , *PULSED lasers - Abstract
We report on an experiment that was conducted in preparation of laser cooling experiments at the heavy-ion storage ring CSRe. The lifetimes of ion beams made up of 12 C 3+ and 16 O 4+ ions stored at an energy of 122 MeV/u in the CSRe were determined by two independent methods, firstly via a DC current transformer (DCCT) and secondly via a Schottky resonator. Using electron-cooling, the signals of the 12 C 3+ and 16 O 4+ ions could be separated and clearly observed in the Schottky spectrum. The obtained individual lifetimes of the 12 C 3+ and 16 O 4+ components were 23.6 s and 17.8 s, respectively. The proportion of 12 C 3+ ions in the stored ion beam was measured to be more than 70% at the beginning of the injection and increasing as a function of time. In addition to these measurements, the operation and remote control of a pulsed laser system placed directly next to the storage ring was tested in a setup similar to the one envisaged for future laser experiments. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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