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    User name Yi Qiang

    Log entry time 23:33:56 on May 09, 2009

    Entry number 272219

    Followups:

    keyword=Experiment Summary for May 5 - 8, 2009

    Tuesday, May 5, 2009

     

    ABU

    BANU

    BNA

    Owl

    5.03

    0.14

    2.82

    Day

    0

    0.58

    7.42

    Swing

    3.34

    2.83

    1.83

    Total

    8.37

    4.55

    12.07

     

    ·         00:00 – 05:55 Production with 3-pass beam: 10uA

    ·         05:55 – 06:35 MCC cavity and FOPT problem

    ·         06:36 – 07:00 Production with 3-pass beam: 10uA

    ·         07:00 – 14:40 Beam study

    ·         14:40 – 16:45 Establish beam and quality check

    ·         16:45 – 17:50 R-HRS high dead time

    ·         17:50 – 19:25 Controlled access: fix crazy R-HRS T8

    ·         19:25 – 20:00 Establish beam and quality check

    ·         20:00 – 21:20 Production with 3-pass beam: 10uA

    ·         21:20 – 23:00 Reference cell measurements: H2@135psig

    ·         23:00 – 24:00 CHL down due to lightning

    Wednesday, May 6, 2009

     

    ABU

    BANU

    BNA

    Owl

    0

    0

    8

    Day

    0

    0

    8

    Swing

    1.93

    1.82

    4.25

    Total

    1.93

    1.82

    20.25

     

    ·         00:00 – 08:00 CHL down due to lightning

    ·         01:00 – 06:00 HRS magnets recovery

    ·         08:00 – 21:00 Beam study and recovery

    ·         08:30 – 21:00 Controlled access:

    o   Moved Neutron Detector to 62.5 degrees and 6 m from target

    o   R-HRS busy signal check: ROC8 busy signal -> Workaround with R-HRS un-buffered mode

    ·         21:00 – 21:45 Establish beam and quality check

    ·         21:45 – 24:00 Production with 3-pass beam: 10uA

    ·         23:30 BCM problem starts

    Thursday, May 7, 2009

     

    ABU

    BANU

    BNA

    Owl

    7.08

    0.34

    0.58

    Day

    3.42

    1.82

    2.75

    Swing

    5.62

    2.01

    0.37

    Total

    16.12

    4.17

    3.70

     

    ·         00:00 – 09:00 Production with 3 pass beam: 10uA

    ·         04:00 – 09:00 Happex DAQ down

    ·         09:00 – 09:30 Controlled access: Rebooting Happex DAQ ROC26

    ·         13:15 – 14:30 MCC RF Power Supply Repair. Controlled access:

    o   First attempt to fix BCM

    o   ROC8 busy signal

    ·         14:30 – 15:50 Establish beam and quality check

    ·         15:50 – 17:30 Production with 3-pass beam: 10uA

    ·         17:30 – 21:50 Controlled access to diagnose R-HRS high dead time and identified it as the after pulsing problem from s2 PMTs. Use multi-hit TDC as a workaround.

    ·         21:50 – 22:30 Establish beam and quality check

    ·         22:30 – 24:00 Production with 3-pass beam: 10uA

     

    Friday, May 8, 2009

     

    ABU

    BANU

    BNA

    Owl

    7.22

    0.12

    0.65

    Day

    3.43

    0.84

    3.73

    Swing

    4.04

    1.39

    2.55

    Total

    14.69

    2.35

    6.93

     

    ·         00:00 – 12:00 Production with 3-pass beam: 10uA

    ·         12:00 – 14:30 Pass change to 2 passes. Controlled access

    o   ROC8 busy problem

    o   PVDIS DAQ

    o   Fix BCM: faulty DC power supply

    ·         14:30 – 16:45 Establish beam and quality check

    ·         16:45 – 21:00 Production with 2-pass beam: 5.5uA

    ·         21:00 – 24:00 Reference cell measurements: H2@135psig, Empty, N2@20psig