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    User name M.Shabestari

    Log entry time 08:10:05 on April27,2008

    Entry number 235051

    keyword=Owl Shift Summary

    Owl shift summary April 27, 2008

    SL : Mitra Shabestari
    TO : Mitra Shabestari
    3rd : Khem Chirapatpimol


    Summary
    ========

    pi0 Production : Kinematics K Part(III)

    BigBite = 43.6 degrees, BigBite current = 390.0 A (setpoint); 388.1 A (readback)
    LHRS = 14.5 degrees, LHRS momentum = 0.9970 GeV/c
    RHRS = 105.0 degrees, RHRS momentum = 0.4596 GeV/c

    Target: 6 cm LH2 in loop1

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    00:00 Shift started. Run# 4049 (LHRS), and run# 20772 (RHRS) have already started. We continue taking production data.

    00:10 ----> Run# 4050 ; events = 1 M

    00:21 ----> Run# 4051 ; events = 1 M

    00:30 ----> Run# 4052 ; events = 1 M

    00:41 ----> Run# 4053 ; events = 1 M

    00:42 ----> Run# 20774 ; started Right HRS..... events = 182 K

    00:51 ----> Run# 4054 ; events = 1 M

    01:04----> Run# 4055 ; events = 126 K.....HV on S5, S7, and S14 tripped due to beam trip.

    01:11 ----> Run# 4056 ; events = 1 M

    01:21 ----> Run# 4057 ; events = 1 M

    01:30 ----> Run# 4058 ; events = 1 M

    01:40 ----> Run# 4059 ; events = 1 M

    01:49 ----> Run# 4060 ; events = 1 M

    02:04 ----> Run# 4061 ; events = 808 K.....HV on S1, S2, S3, S4, S5, S6, S7, and S14 tripped due to beam trip.

    02:16 ----> Run# 4062 ; events = 1 M

    02:25 ----> Run# 4063 ; events = 1 M

    02:36 ----> Run# 4064 ; events = 1 M

    02:45 ----> Run# 4065 ; events = 1 M

    02:46 ----> Run# 20775 ; started Right HRS..... events = 174 K

    02:55 ----> Run# 4066 ; events = 1 M

    03:05 ----> Run# 4067 ; events = 1 M

    03:14 ----> Run# 4068 ; events = 1 M

    03:24 ----> Run# 4069 ; events = 1 M

    03:34 ----> Run# 4070 ; events = 1 M

    03:43 ----> Run# 4071 ; events = 1 M

    03:53 ----> Run# 4072 ; events = 1 M

    04:02 ----> Run# 4073 ; events = 1 M

    04:12 ----> Run# 4074 ; events = 1 M

    04:22 ----> Run# 4075 ; events = 1 M

    04:36 ----> Run# 4076 ; events = 1 M

    04:42 ----> Run# 4077 ; events = 1 M

    04:42 ----> Run# 20776 ; started Right HRS..... events = 191 K

    04:52 ----> Run# 4078 ; events = 1 M

    05:01 ----> Run# 4079 ; events = 1 M

    05:12 ----> Run# 4080 ; events = 1 M

    05:23 ----> Run# 4081 ; events = 1 M

    05:31 ----> Run# 4082 ; events = 1 M

    05:41 ----> Run# 4083 ; events = 1 M

    05:51 ----> Run# 4084 ; events = 1 M

    05:59 ----> Run# 4085 ; events = 1 M

    06:15 ----> Run# 4086 ; events = 1 M

    06:29 ----> Run# 4087 ; events = 1 M

    06:36 ----> Run# 4088 ; events = 1 M

    06:46 ----> Run# 4089 ; events = 1 M

    06:54 ----> Run# 20777 ; started Right HRS

    06:56 ----> Run# 4090 ; events = 1 M

    07:06 ----> Run# 4091 ; events = 1 M

    07:16 ----> Run# 4092 ; events = 1 M

    07:26 ----> Run# 4093 ; events = 187 K....HV alarm went off, while there was no HV trip!

    07:29 ----> Run# 4094 ; events = 1 M

    07:38 ----> Run# 4095 ; events = 1 M

    07:48 ----> Run# 4096 ; events = 1 M

    07:56 ----> Run# 4097 ; ongoing




    Beam enery was 1192.38 MeV.

    For the current kinematics ( K ):
    Total charge collected by the start of the owl shift = 0.364 C
    Total charge collected at the end of the owl shift = 0.447 C