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WEN Wei-Qiang, MA Xin-Wen, ZHANG Da-Cheng, ZHU Xiao-Long, MENG Ling-Jie, LI Jie, LIU Hui-Ping, ZHAO Dong-Mei, WANG Zhi-Shuai, MAO Rui-Shi, ZHAO Tie-Cheng, WU Jun-Xia, MA Xiao-Ming, YAN Tai-Lai, LI Guo-Hong, YANG Xiao-Dong, LIU Yong, YANG Jian-Cheng, YUAN You-Jin, XIA Jia-Wen, XU Hu-Shan, XIAO Guo-Qing and ZHAO Hong-Wei. Longitudinal Schottky spectra of a bunched Ne10+ ion beam at the CSRe[J]. Chinese Physics C, 2013, 37(10): 107005. doi: 10.1088/1674-1137/37/10/107005
WEN Wei-Qiang, MA Xin-Wen, ZHANG Da-Cheng, ZHU Xiao-Long, MENG Ling-Jie, LI Jie, LIU Hui-Ping, ZHAO Dong-Mei, WANG Zhi-Shuai, MAO Rui-Shi, ZHAO Tie-Cheng, WU Jun-Xia, MA Xiao-Ming, YAN Tai-Lai, LI Guo-Hong, YANG Xiao-Dong, LIU Yong, YANG Jian-Cheng, YUAN You-Jin, XIA Jia-Wen, XU Hu-Shan, XIAO Guo-Qing and ZHAO Hong-Wei. Longitudinal Schottky spectra of a bunched Ne10+ ion beam at the CSRe[J]. Chinese Physics C, 2013, 37(10): 107005.  doi: 10.1088/1674-1137/37/10/107005 shu
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Received: 2012-12-18
Revised: 1900-01-01
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Longitudinal Schottky spectra of a bunched Ne10+ ion beam at the CSRe

    Corresponding author: MA Xin-Wen,

Abstract: The longitudinal Schottky spectra of a radio-frequency (RF) bunched and electron cooled 22Ne10+ ion beam at 70 MeV/u have been studied by a newly installed resonant Schottky pick-up at the experimental cooler storage ring (CSRe), at IMP. For an RF-bunched ion beam, a longitudinal momentum spread of Δp/p=1.6×10-5 has been reached with less than 107 stored ions. The reduction of momentum spread compared with a coasting ion beam was observed from Schottky noise signal of the bunched ion beam. In order to prepare the future laser cooling experiment at the CSRe, the RF-bunching power was modulated at 25th, 50th and 75th harmonic of the revolution frequency, effective bunching amplitudes were extracted from the Schottky spectrum analysis. Applications of Schottky noise for measuring beam lifetime with ultra-low intensity of ion beams are presented, and it is relevant to upcoming experiments on laser cooling of relativistic heavy ion beams and nuclear physics at the CSRe.

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