Experimental techniques and performance of Λ -hypernuclear spectroscopy with the (e,e'K+) reaction

doi:10.1016/j.nima.2018.05.042

This content will become publicly available on May 28, 2019

Title: Experimental techniques and performance of $Λ$ -hypernuclear spectroscopy with the $(e, e^{'} K^{+})$ reaction

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The missing-mass spectroscopy of $$\Lambda$$ hypernuclei via the $$(e,e^{\prime}K^{+})$$ reaction has been developed through experiments at JLab Halls A and C in the last two decades. For the latest experiment, E05-115 in Hall C, we developed a new spectrometer system consisting of the HKS and HES; resulting in the best energy resolution ($$E_{\Lambda} \simeq0.5$$-MeV FWHM) and $$B_{\Lambda}$$ accuracy ($$B_{\Lambda}\leq0.2$$ MeV) in $$\Lambda$$-hypernuclear reaction spectroscopy. This paper describes the characteristics of the $$(e,e^{\prime}K^{+})$$ reaction compared to other reactions and experimental methods. In addition, the experimental apparatus, some of the important analyses such as the semi-automated calibration of absolute energy scale, and the performance achieved in E05-115 are presented.

Authors:

Gogami, T. ^[1] ; Chen, C. ^[2] ; Fujii, Y. ^[1] ; Hashimoto, O. ^[1] ; Kaneta, M. ^[1] ; Kawama, D. ^[1] ; Maruta, T. ^[1] ; Matsumura, A. ^[1] ; Nagao, S. ^[1] ; Nakamura, S. N. ^[1] ; Okayasu, Y. ^[1] ; Reinhold, J. ^[3] ; Tang, L. ^[4] ; Tsukada, K. ^[1] ; Wood, S. A. ^[5] ; Yuan, L. ^[2]

Tohoku Univ., Sendai (Japan)
Hampton Univ., Hampton, VA (United States)
Florida Intl Univ., Miami, FL (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Hampton Univ., Hampton, VA (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Publication Date:: 2018-05-28

Report Number(s):: JLAB-PHY-17-2582; DOE/OR/23177-4242; arXiv:1709.05682
Journal ID: ISSN 0168-9002; PII: S0168900218306570

Grant/Contract Number:: 18H01219; 17H01121; 12002001; 15684005; 16GS0201; 12J04123; 21002; R2201; AC05-84ER40150; AC05-06OR23177; FG02-99ER41065; FG02-97ER41047; AC02-06CH11357; FG02-00ER41110; AC02-98CH10886; 013815; 0758095

Type:: Accepted Manuscript

Journal Name:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

Additional Journal Information:: Journal Volume: 900; Journal Issue: C; Journal ID: ISSN 0168-9002

Publisher:: Elsevier

Research Org:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Org:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

OSTI Identifier:: 1458442


                    Gogami, T., Chen, C., Fujii, Y., Hashimoto, O., Kaneta, M., Kawama, D., Maruta, T., Matsumura, A., Nagao, S., Nakamura, S. N., Okayasu, Y., Reinhold, J., Tang, L., Tsukada, K., Wood, S. A., and Yuan, L.. Experimental techniques and performance of Λ -hypernuclear spectroscopy with the (e,e'K+) reaction.  United States: N. p.,  
        Web.  doi:10.1016/j.nima.2018.05.042.

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                    Gogami, T., Chen, C., Fujii, Y., Hashimoto, O., Kaneta, M., Kawama, D., Maruta, T., Matsumura, A., Nagao, S., Nakamura, S. N., Okayasu, Y., Reinhold, J., Tang, L., Tsukada, K., Wood, S. A., & Yuan, L.. Experimental techniques and performance of Λ -hypernuclear spectroscopy with the (e,e'K+) reaction.  United States.  doi:10.1016/j.nima.2018.05.042.

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                    Gogami, T., Chen, C., Fujii, Y., Hashimoto, O., Kaneta, M., Kawama, D., Maruta, T., Matsumura, A., Nagao, S., Nakamura, S. N., Okayasu, Y., Reinhold, J., Tang, L., Tsukada, K., Wood, S. A., and Yuan, L.. 2018.  
        "Experimental techniques and performance of Λ -hypernuclear spectroscopy with the (e,e'K+) reaction".  United States.  
        doi:10.1016/j.nima.2018.05.042.

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@article{osti_1458442,

  title        = {Experimental techniques and performance of Λ -hypernuclear spectroscopy with the (e,e'K+) reaction},

  author       = {Gogami, T. and Chen, C. and Fujii, Y. and Hashimoto, O. and Kaneta, M. and Kawama, D. and Maruta, T. and Matsumura, A. and Nagao, S. and Nakamura, S. N. and Okayasu, Y. and Reinhold, J. and Tang, L. and Tsukada, K. and Wood, S. A. and Yuan, L.},

  abstractNote = {The missing-mass spectroscopy of $\Lambda$ hypernuclei via the $(e,e^{\prime}K^{+})$ reaction has been developed through experiments at JLab Halls A and C in the last two decades. For the latest experiment, E05-115 in Hall C, we developed a new spectrometer system consisting of the HKS and HES; resulting in the best energy resolution ($E_{\Lambda} \simeq0.5$-MeV FWHM) and $B_{\Lambda}$ accuracy ($B_{\Lambda}\leq0.2$ MeV) in $\Lambda$-hypernuclear reaction spectroscopy. This paper describes the characteristics of the $(e,e^{\prime}K^{+})$ reaction compared to other reactions and experimental methods. In addition, the experimental apparatus, some of the important analyses such as the semi-automated calibration of absolute energy scale, and the performance achieved in E05-115 are presented.},

  doi          = {10.1016/j.nima.2018.05.042},

  journal      = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},

  number       = C,

  volume       = 900,

  place        = {United States},

  year         = {2018},

  month        = {5}

}

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This content will become publicly available on May 28, 2019
Publisher's Version of Record
10.1016/j.nima.2018.05.042
https://doi.org/10.1016/j.nima.2018.05.042

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Title: Experimental techniques and performance of Λ -hypernuclear spectroscopy with the ( e , e ' K + ) reaction

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Title: Experimental techniques and performance of $Λ$ -hypernuclear spectroscopy with the $(e, e^{'} K^{+})$ reaction