The superconducting kaon spectrometer - SKS

T. Fukuda, T. Hasegawa, O. Hashimoto, A. Higashi, S. Homma, T. Kitami, Y. Matsuyama, T. Miyachi, T. Morimoto, T. Nagae, K. Omata, M. Sekimoto, T. Shibata, H. Sakaguchi, T. Takahashi, K. Aoki, Y. Doi, Y. Kondo, Y. Makida, M. NomachiH. Noumi, O. Sasaki, T. Shintomi, H. Bhang, H. Park, M. Youn, H. Yu, Y. Gavrilov, S. Ajimura, T. Kishimoto, A. Ohkusu, N. Shinkai, K. Maeda, R. Sawafta

Research output: Contribution to journalArticlepeer-review

96 Citations (Scopus)


A superconducting kaon spectrometer has been installed in the north experimental hall of the KEK 12-GeV proton synchrotron. The spectrometer was designed to serve for nuclear physics experiments with meson beams in the 1 GeV/c region, particular emphasis being laid on study of Λ-hypernuclei via (π+, K+) reactions. In order to obtain Λ-hypernuclear data with better statistics and energy resolution, it was designed to have a good momentum resolution of 0.1% FWHM and a large acceptance of 100 msr. It consists of a large superconducting dipole magnet, tracking chambers, and trigger counters that can efficiently select kaons from large background of pions and protons. The overall energy resolution for scattering is realized together with a beam-line spectrometer in the K6 beam line, the momentum resolution of which was also designed to be better than 0.1% FWHM. A good energy resolution of better than 2 MeV FWHM has been confirmed in π--12C elastic scattering and in the (π+,K+) reaction on 12C.

Original languageEnglish
Pages (from-to)485-496
Number of pages12
JournalNuclear Inst. and Methods in Physics Research, A
Issue number3
Publication statusPublished - 1995 Jul 15
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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