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7ASNM030 21 2 15

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  • � � � � � ��� � �� �� � � ��� � � � � � � � � �

    ��� �

    "!$#"% &'%)('*'+ ,'&'%'-$./'0 ("*$1

    7ASNM030 243 56

    7$821 9 2 : 15 ;

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  • � �

    �1 � ��� 11.1

    ���#:7;��=-?X@. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

    1.2 J�:7;��=-?X@ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.2.1 JF:7;��=-?X@�

    � . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.2.2

    �l��!#�F$�&+(l$'�*�/lz JF:7;��=

  • �3 � ������������������������� 253.1

    I z�«2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

    3.2 ��� =�� ��� . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253.2.1 1

    ���

  • 4.8T�U ¨FØyz����

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

    �5 � QBee !4"�#�$&%&'��)4*��2,�- 545.1

    qF§�z�«2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

    5.2qF§����

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

    5.2.1 �0� =1� �2� . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 545.2.2

    *�l �0� = . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 565.2.3

    ×43PP= � �2%P< . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 565.2.4

     �¡F¢�£ ¤'z954�7���. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

    5.3»F:����

  • � � �

    1.1 J�:7;��=-?X@�z%s t�u�v%�%����i= u . . . . . . . . . . . . . . . . . . . . . . 3

    2.1���-!#�%»*)�;��-u

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

    2.2 � ul½��%u��#�

  • 3.7 LEDzXõ ö�� B z2Ä Å

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

    3.8*l������%z'��* �#Xu

    ( ��� ) z�� B . . . . . . . . . . . . . . . . . . . . . . 333.9

    *l� �0� = . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333.10 LED1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

    3.11 LED2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

    3.12 LED1&LED2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

    3.13»F:�����H��@AB NAB/O�P9:$QLR>�@AB1C�S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

    4.117 (T&)(VUAWYX9Z[W 0�\ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

    4.12 No hit ]A^"!$_�`ba . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504.13 c de�f�ghI�!G#�%T&)( . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 514.14 #�%T&)( . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 524.15 #�%T&)( ��� i !�jAk lAm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

    5.1 SK-IV n�o�k�lAmAp�q1r�!�sVX't�u[XDv . . . . . . . . . . . . . . . . . . . . . . . 55

    v

  • 5.2 � de��������'P��dAe�������A!���XTt�VXGv . . . . . . . . . . . . . . . . . . 565.3 ������� 0 ���"! PMT I�! ��� . . . . . . . . . . . . . . . . . . . . . . . . . . . 585.4 ����������X�v)f�g : ���/!��* 1/2 ��� 0 PMT P 1/8 ��� 0 PMT E� ��/* 1/8

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  • � � �

    2.1 ATM !���� P���m [5] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.2 SK-IV ! Hit-sum trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212.3 � 0 !�p�q��VP TDC1 k E 0 t8#~Ma !�nAo . . . . . . . . . . . . . . . . . 22

    3.1 dAn

    ����� (R7800-01MOD) !�m�� . . . . . . . . . . . . . . . . . . . . . . . . 273.2 camac ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

    vii

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    π+ → µ± + νµ (1.1)

    1

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    π− → µ− + ν̄µ (1.3)

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  • νe +37 Cl → e− +37 Ar (1.10)

    7�E��IOI�E,u����

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    6

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    8

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    9

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    10

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    11

  • ¿2.6: 1

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    7

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    12

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    (2.2)

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    d2N

    dλdL=

    2παZ2

    λ2(1 − 1

    n2β2) (2.3)

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    ∫ λ2

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    (

    1

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    λ2

    )

    (2.4)

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    15

  • �2.9: SK-III

    �A°

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    19

  • 2.11: SK-IV ` °

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    E2.2: SK-IV

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  • A 2.13: QBee

    24

  • �3 � � � � � � � � � � � � �

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    27

  • 3.2.2 CAMAC ADC

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    Ip02 + Ip01 = Ip03 (3.1)

    28

  • Ip03Ip01 + Ip02

    = 1 (3.2)

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    29

  • ]3.4: NSHU550A

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    30

  • ]3.6: �` � LED � � ¢ �����  

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    32

  • Y 3.8: K ¡2¢.����, � � K �z¢ ( )&+�, ) �\��

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    33

  • IP03Ip01 + Ip02

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    34

  • Y 3.10: LED1

    Y 3.11: LED2

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  • Y 3.13: � �z¢R¡���� � � F X '

    36

  • �4 � ATM � � � � � � � � � �

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    37

  • Y 4.1: O�� m Q�%3D � W R l SK-III m � F X '

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    38

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    40

  • P4.5: {=|)m��5[ o � /�e��

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    41

  • t����-?T@�t , �BN evt O�D 6 7 tof(time of flight:SK ��e�y5z$n�� ��Y��&% `�' #���?R1m�

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    Nevent(4.1)

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    43

  • ? 4.6: #35 P �#� � i

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  • ? 4.7: #35 P �#� $�*��

    ? 4.8: SK-III P �#� $&*(�

    45

  • � n 2�� SK-III ^ [ 7���� R�t�ygP���� � 032 �� PR�2�o E P�,S~� ' Zpm a��� $*�� �� A�P-

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    47

  • Y 4.10: ehf A�! ~ _ f+@g#��!�� �� : ��� � ehf A�!@ ATM �@����9���8����� ?'!�A�!� e/f=� � b '�' � +;b " � ��� ehf `�b '�'�2(' )*! � � `,b '�' %

    Y 4.11: ?'!�A�! (� � � 8&�

    48

  • 4.7 ����������� ��������������������� � [ C SK � 4)\�� _! `�b '�'#" c)d%$ $�*(� � e�f A�! �'&e�f )(,b 2�' $ $�*(�� "+*#,��.- ?%/O�g )�� � �'& Q3g 2 $ $�*(� �

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    4.13b|2Tx

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    50

  • �4.13:

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    [1] / C�� Y���� 8�� 4 �� R������������ 1997[2] J. N. Bahcall et al., Phys. Rev. Lett. 20, 1209 (1968).

    [3] Y. Ashie et al, arXiv:hep-ex/0508053

    [4] Q. R. Ahmad et al, Phys. Rev. Lett. 87 (2001) 071301

    [5] ��� ��� , � ��' ������!�"�#�R ����$�% &�' k ( (2006)[6] )+*-,�. , � �' ������!�"�#(R�����$�% &�' k�( (2007)

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