Commissioning of electron cooling in CSRm |
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作者姓名: | 杨晓东 李杰 冒立军 李国宏 詹文龙 夏佳文 赵红卫 肖国青 原有进 宋明涛 刘勇 杨建成 高大庆 周忠祖 何源 张玮 郑建华 毛瑞士 赵铁成 Parkhomchuk Vasily |
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作者单位: | 1 Institute of Modern Physics, CAS, Lanzhou 730000, China;2 Budker Institute of Nuclear Physics, Novosibirsk, RAS 630090, Russia |
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基金项目: | Supported by the Central Government of China |
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摘 要: | A new generation electron cooler has started operation in the heavy ion synchrotron CSRm which is used to increase the intensity of heavy ions. Transverse cooling of the ion beam after horizontal multi-turn injection allows beam accumulation at the injection energy. After optimization of the accumulation process an intensity increase in a synchrotron pulse by more than one order of magnitude has been achieved. In given accumulation time interval of 10 seconds, 108 particles have been accumulated and accelerated to the final energy. The momentum spread after accumulation and acceleration in the 10-4 range has been demonstrated in six species of ion beams. Primary measurements of accumulation process varying with electron energy, electron beam current, electron beam profile, expansion factor and injection interval have been performed. The lifetimes of ion beams in the presence of electron beams were roughly measured with the help of DCCT signal.
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关 键 词: | electron cooling hollow electron beam accumulation |
收稿时间: | 2009-1-6 |
Commissioning of electron cooling in CSRm |
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Institution: | Institute of Modern Physics;CAS;Lanzhou 730000;China;Budker Institute of Nuclear Physics;Novosibirsk;RAS 630090;Russia |
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Abstract: | A new generation electron cooler has started operation in the heavy ion synchrotron CSRm which is used to increase the intensity of heavy ions. Transverse cooling of the ion beam after horizontal multi-turn injection allows beam accumulation at the injection energy. After optimization of the accumulation process an intensity increase in a synchrotron pulse by more than one order of magnitude has been achieved. In given accumulation time interval of 10 seconds, 108 particles have been accumulated and acceler... |
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Keywords: | electron cooling hollow electron beam accumulation |
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