A timing detector with pulsed high-voltage power supply for mass measurements 
at CSRe

Zhang, W.; Tu X.L., X.L.; Wang, M.; Zhang, Y.H.; Xu, H.S.; Litvinov, Yuri A.; Blaum, Klaus; Chen, X.C.; Hu, Z.G.; Huang, W.J.; Ma, X.W.; Mao, R.S.; Mei, B.; Shuai, P.; Sun, B.H.; Yamaguchi, T.; Xia, J.W.; Xiao, G.Q.; Xu, X.; Yan, X.L.; Yang, J.C.; Yuan, Y.J.; Zhou, X.H.; Zhao, H.W.; Zhao, T.C

doi:10.1016/j.nima.2014.04.031

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A timing detector with pulsed high-voltage power supply for mass measurements at CSRe

MPS-Authors

Tu X.L., X.L.
Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences;
GSI Helmholtzzentrum für Schwerionenforschung;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Litvinov, Yuri A.
Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences;
GSI Helmholtzzentrum für Schwerionenforschung;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum, Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://www.sciencedirect.com/science/article/pii/S0168900214004276
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Citation

Zhang, W., Tu X.L., X., Wang, M., Zhang, Y., Xu, H., Litvinov, Y. A., et al. (2014). A timing detector with pulsed high-voltage power supply for mass measurements at CSRe. Nuclear Instruments and Methods in Physics Research Section A, 755, 38-43. doi:10.1016/j.nima.2014.04.031.

Cite as: https://hdl.handle.net/11858/00-001M-0000-001A-1562-5

Abstract

Accuracy of nuclear mass measurements in storage rings depends critically on the accuracy with which the revolution times of stored ions can be obtained. In such experiments, micro-channel plates (MCP) are used as timing detectors. Due to large phase space of injected secondary beams, a large number of ions cannot be stored in the ring and is lost within the first few revolutions. However, these ions interact with the detector and can saturate the MCP and thus deteriorate its performance. In order to eliminate such effects, a fast, pulsed high-voltage power supply (PHVPS) has been employed which keeps the detector switched-off during the first few revolutions. The new detector setup was taken into operation at the Experimental Cooler-Storage-Ring CSRe in Lanzhou and resulted in a significant improvement of the detector amplitude and efficiency characteristics.