Preparations for laser cooling of relativistic heavy-ion beams at the CSRe

• Published in: Physica scripta 2013-09, Vol.T156 (1), p.14090
• Main Authors: Wen, Weiqiang, Ma, Xinwen, Zhang, Dacheng, Bussmann, Michael, Zhu, XiaoLong, Winters, Danyal, Meng, Lingjie, Liu, Huiping, Zhao, Dongmei, Wang, Zhishuai, Li, Jie, Mao, Ruishi, Zhao, Tiecheng, Wu, Junxia, Li, Guohong, Yang, Xiaodong, Liu, Yong, Yang, Jiancheng, Yuan, Youjin, Xia, Jiawen, Xu, Hushan
• Format: Article
• Language: English
• ISSN: 0031-8949; 1402-4896
• DOI: 10.1088/0031-8949/2013/T156/014090

Laser cooling is one of the most promising techniques to reach high phase-space densities for relativistic heavy-ion beams. Preparations for laser cooling of relativistic lithium-like ions, such as C3+ and N4+, are being made at the experimental cooler storage ring (CSRe) in Lanzhou, China. In December 2011, a new buncher was installed and tested with a 70 MeV u−1 22Ne10+ ion beam by electron cooling at the CSRe. The longitudinal momentum spread of the bunched ion beam was measured by the new resonant Schottky pick-up. As a result, Δp p 2 × 10−5 has been reached at ion numbers less than 107. According to this test result, the RF-buncher is suitable for the upcoming experiment of laser cooling at the CSRe. Laser cooling of heavy-ion beams will also be applied at future storage ring facilities, e.g. FAIR in Darmstadt, and HIAF in Lanzhou.