Time-of-flight detectors with improved timing performance for isochronous mass 
measurements at the CSRe

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

doi:10.1016/j.nima.2014.04.051

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Time-of-flight detectors with improved timing performance for isochronous mass measurements at the CSRe

MPS-Authors

Tu, 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;

/persons/resource/persons30312

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

Gao , B.S.
University of Chinese Academy of Sciences;
GSI Helmholtzzentrum für Schwerionenforschung;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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

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http://dx.doi.org/10.1016/j.nima.2014.04.051
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Citation

Zhang, W., Tu, X., Wang, M., Zhang, Y., Xu, H., Litvinov, Y. A., et al. (2014). Time-of-flight detectors with improved timing performance for isochronous mass measurements at the CSRe. Nuclear Instruments and Methods in Physics Research Section A, 756, 1-5. doi:10.1016/j.nima.2014.04.051.

Cite as: https://hdl.handle.net/11858/00-001M-0000-001A-1574-E

Abstract

In isochronous mass spectrometry (IMS) established in heavy-ion storage rings the revolution times of the stored secondary ions should be independent of their velocity spread. However, this isochronous condition is fulfilled only in first order and in a small range of revolution times. To correct for the non-isochronicity an additional measure of the velocity or magnetic rigidity of each stored ion is required. For this purpose two new time-of-flight (TOF) detectors were installed in a straight section of the experimental Cooler Storage Ring CSRe in Lanzhou. The performance of the new time-of-flight (TOF) detectors, which is crucial for the achievable efficiencies and mass resolving power, was significantly improved. The time resolution of the TOF detector in offline tests was σ=18.5±2ps. The detector setup was put into operation with a stable beam of ⁷⁸Kr.