Secondary electron time detector for mass measurements at CSRe

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TU Xiao-Lin, WANG Meng, HU Zheng-Guo, XU Hu-Shan, GUO Zhong-Yan, MAO Rui-Shi, XIAO Guo-Qing, ZHANG Hong-Bin, ZANG Yong-Dong and YUE Ke. Secondary electron time detector for mass measurements at CSRe[J]. Chinese Physics C, 2010, 34(3): 363-367. doi: 10.1088/1674-1137/34/3/011
TU Xiao-Lin, WANG Meng, HU Zheng-Guo, XU Hu-Shan, GUO Zhong-Yan, MAO Rui-Shi, XIAO Guo-Qing, ZHANG Hong-Bin, ZANG Yong-Dong and YUE Ke. Secondary electron time detector for mass measurements at CSRe[J]. Chinese Physics C, 2010, 34(3): 363-367.  doi: 10.1088/1674-1137/34/3/011 shu
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Received: 2009-05-05
Revised: 2009-08-31
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Secondary electron time detector for mass measurements at CSRe

    Corresponding author: TU Xiao-Lin,

Abstract: 

The Isochronous Mass Spectrometry is a high accurate mass spectrometer. A secondary electrons time detector has been developed and used for mass measurements. Secondary electrons from a thin carbon foil are accelerated by an electric field and deflected 180° by a magnetic field onto a micro-channel plate. The time detector has been tested with alpha particles and a time resolution of 197 ps (FWHM) was obtained in the laboratory. A mass resolution around 8×10-6 for Δm/m was achieved by using this time detector in a pilot mass measurement experiment.

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