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

The missing-mass spectroscopy of Λ hypernuclei via the (e,e′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 ene...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2018-08, Vol.900 (C), p.69-83
Main Authors: 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.
Format: Article
Language:English
Subjects:
[formula omitted] hypernuclei
[formula omitted] reaction
High accuracy energy calibration
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Kaon detection
Magnetic spectrometer systems
Missing-mass spectroscopy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The missing-mass spectroscopy of Λ hypernuclei via the (e,e′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 (ΔE≃0.5-MeV FWHM) and BΛ accuracy (ΔBΛ≤0.2MeV) in Λ-hypernuclear reaction spectroscopy. This paper describes the characteristics of the (e,e′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. •High precision Λ-hypernuclear spectroscopic experiment was established at JLab.•The best energy resolution in reaction spectroscopy of hypernuclei was achieved.•New spectrometer system, HKS-HES, was developed.•Semi-automated absolute energy-scale calibration method was developed.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2018.05.042