Longitudinal Schottky spectra of a bunched Ne<SUP>10+</SUP> ion beam at the CSRe

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; ZHAO Hong-Wei

doi:10.1088/1674-1137/37/10/107005

Chinese Physics C> 2013, Vol. 37> Issue(10) : 107005 DOI: 10.1088/1674-1137/37/10/107005

Longitudinal Schottky spectra of a bunched Ne¹⁰⁺ ion beam at the CSRe

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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 25^th, 50^th and 75^th 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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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

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Received: 2012-12-18
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沈阳化工大学材料科学与工程学院沈阳 110142

Longitudinal Schottky spectra of a bunched Ne¹⁰⁺ ion beam at the CSRe

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Longitudinal Schottky spectra of a bunched Ne¹⁰⁺ ion beam at the CSRe

Corresponding author: MA Xin-Wen,

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Longitudinal Schottky spectra of a bunched Ne10+ ion beam at the CSRe

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通讯作者: 陈斌, bchen63@163.com

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Longitudinal Schottky spectra of a bunched Ne10+ ion beam at the CSRe

Corresponding author: MA Xin-Wen,

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Longitudinal Schottky spectra of a bunched Ne¹⁰⁺ ion beam at the CSRe

Longitudinal Schottky spectra of a bunched Ne¹⁰⁺ ion beam at the CSRe