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  • 1

    KEK

    takasumi.maruyama@kek.jp

    5

    nagakura@icepp.s.u-tokyo.ac.jp

    hiramoto@scphys.kyoto-u.ac.jp nakao@icepp.s.u-tokyo.ac.jp

    2015 ( 27 ) 7 31

    1

    1.1

    20111 [1] 2015 5

    1.2 5

    5 6 10∼12 20141

    1: 5

    1 KEK

    3 indico

    [2] 72 6

    21 35

    Belle II

    ATLAS

    1

    2

    2 2

    123

  • 2

    2: 2

    2

    • 2

    • 2– 1

    – 1

    3D µ→ eγ MEGII 3

    • 1MWPC

    • 2– 1

    – 2

    2

    2

    2.1 1

    ATLAS

    5 10

    2

    2

    11

    2.2 2

    3

    124

  • 3

    3

    1

    3

    2.3 3

    MEGII

    PMT

    Multi-Pixel Photon Counter(MPPC)

    3D 3

    MEGII

    2

    1

    2

    5 6 1

    4 1

    4

    3

    3

    6

    4

    [1] , Vol.31 No.2 (2012).

    , Vol.32 No.2

    (2013).

    , Vol.33 No.2

    (2014).

    [2] https://kds.kek.jp/indico/event/18746/

    125