Author/Authors :
Takahashi، نويسنده , , H and Akikawa، نويسنده , , H and Aoki، نويسنده , , S and Ichikawa، نويسنده , , A and Ieiri، نويسنده , , M and Imai، نويسنده , , K and Kanda، نويسنده , , H and Kondo، نويسنده , , Y and Nakazawa، نويسنده , , K and Rhee، نويسنده , , J.T and Tojo، نويسنده , , J and Yamamoto، نويسنده , , K and Yoshida، نويسنده , , T، نويسنده ,
Abstract :
Scintillating-fiber-block detectors have been constructed using 0.5 mm square fibers for the KEK-PS E373 experiment, which searches for double-strangeness nuclei. The main aim of the detector is to measure the energies of protons and pions produced from decay of double- or single-hypernuclei using their ranges. It is also used to detect Λ hyperons or the H-dibaryon, and to make event selection. The performance of the detectors was studied with low-energy proton and pion beams as well as minimum-ionizing particles. The energy resolution determined by the range measurements was 0.86 MeV for 37 MeV π−ʹs and 1.4 MeV for 47 MeV protons. The excellent capability of π/p separation has been also demonstrated.
