Author/Authors :
Tajima، نويسنده , , Y. and Ahn، نويسنده , , J.K. and Akune، نويسنده , , Y. and Aruga، نويسنده , , Y. and Doroshenko، نويسنده , , M. and Hsiung، نويسنده , , Y.B. and Iijima، نويسنده , , A. and Ikemoto، نويسنده , , Y. and Inagaki، نويسنده , , T. and Ishibashi، نويسنده , , S. and Ishihara، نويسنده , , N. and Ishii، نويسنده , , H. and Itaya، نويسنده , , M. and Iwai، نويسنده , , M. and Iwata، نويسنده , , T. and Kobayashi، نويسنده , , S. and Komatsu، نويسنده ,
Abstract :
Large lead/scintillator sandwich-type photon detectors, sensitive to visible energy depositions of 1 MeV, have been built for the K L 0 → π 0 ν ν ¯ experiment at the KEK 12-GeV proton synchrotron. The front barrel (FB) is composed of 16 modules with a length of 2.75 m, forming the 1.5 m-diameter cylinder. The main barrel (MB) is composed of 32 modules with a length of 5.5 m, forming a 3.5 m-diameter cylinder. Scintillation light is read out through wavelength-shifter (WLS) fibers. In this paper, the design, construction and performance of these detectors together with some R&D results are reported.
Keywords :
Lead/scintillator sandwich-type photon detector , Wavelength-shifter (WLS) fiber readout , Kaon rare decay
