Research of the detuning system of cooling electron beam for dielectronic recombination experiment at CSRm

MENG Ling-Jie; MA Xin-Wen; YANG Xiao-Dong; LI Jie; MAO Li-Jun; MA Xiao-Ming; YAN Tai-Lai; XIA Jia-Wen; YUAN You-Jin; XU Hu-Shan; YANG Jian-Cheng; XIAO Guo-Qing

doi:10.1088/1674-1137/37/1/017004

Chinese Physics C> 2013, Vol. 37> Issue(1) : 017004 DOI: 10.1088/1674-1137/37/1/017004

Research of the detuning system of cooling electron beam for dielectronic recombination experiment at CSRm

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Abstract：
The storage ring equipped with an electron cooler is an ideal platform for dielectronic recombination (DR) experiments. In order to fulfill the requirement of DR measurements at the main Cooler Storage Ring, a detuning system for the precision control of the relative energy between the ion beam and the electron beam has been installed on the electron cooler device. The test run using 7.0 MeV/u C⁶⁺ beam was performed with recording the Schottky spectra and the ion beam currents. The influence of pulse heights and widths of the detuning voltage on the ion beam was analyzed. For the small pulse height, the experimental results from the Schottky spectra were in good agreement with the theoretical results. The frequency shift in the Schottky spectra was significantly reduced for the short pulse width. For the large pulse height, an oscillation phenomenon was observed and some effective ways to reduce the oscillation were pointed out. The detailed description of the phenomenon and the theoretical model based on the plasma oscillation was discussed in this paper. The overall results show that the new detuning system works properly, and could fulfill the requirements of future DR experiment.

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MENG Ling-Jie, MA Xin-Wen, YANG Xiao-Dong, LI Jie, MAO Li-Jun, MA Xiao-Ming, YAN Tai-Lai, XIA Jia-Wen, YUAN You-Jin, XU Hu-Shan, YANG Jian-Cheng and XIAO Guo-Qing. Research of the detuning system of cooling electron beam for dielectronic recombination experiment at CSRm[J]. Chinese Physics C, 2013, 37(1): 017004. doi: 10.1088/1674-1137/37/1/017004

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Received: 2012-03-15
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沈阳化工大学材料科学与工程学院沈阳 110142

Research of the detuning system of cooling electron beam for dielectronic recombination experiment at CSRm

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Research of the detuning system of cooling electron beam for dielectronic recombination experiment at CSRm

Corresponding author: MENG Ling-Jie,

Corresponding author: MA Xin-Wen,

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