Summary of the operations (May, 2000) [To Jananese page] [Go to home]


May 8 2000

  • We are starting up the PF ring. Machine tuning is underway.

  • May 9 2000

  • Machine tuning is underway.

  • May 10 2000

  • User run
  • Beam injection started at 8:04 a.m. We permitted to open the beam shutters at 8:43 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    8:43 a.m

    224.5 mA

    89.7 hours   

    1208.3 A*minutes

    30.3 nPa

    2437.4 A*hours


    May 11 2000

  • User run
  • Beam injection started at 9:05 a.m. We permitted to open the beam shutters at 9:40 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:40

    224.9 mA

    91.6 hours   

    1235.7 A*minutes

    32.7 nPa

    2442.4 A*hours


    May 12 2000

  • User run
  • Beam injection started at 9:05 a.m. We permitted to open the beam shutters at 9:40 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:24 a.m.

    225.4 mA

    85.7 hours   

    1159.2 A*minutes

    31.1 nPa

    2447.3 A*hours

  • A beam dump happened at 0:00 p.m due to an interlock action in a magnet-QDF
  • The beam was injected again at 1:06 p.m.
  • An injection was over at 1:20 p.m.
  • Durring a beam acceleration, due to the RF trip the beam dump happened again at 1:03 p.m.
  • The beam was injected again at 2:37 p.m. And then we permitted to open all beam shutters at 3:21 p.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    3:21 p.m.

    225.0 mA

    91.0 hours   

    1228.4 A*minutes

    30.3 nPa

    2448.0 A*hours

  • We had a beam dump at 8:33 p.m due to the rf trip. The beam was injected again at 8:52
  • We permitted to open the beam shutters at 9:17 p.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:17 p.m.

    225.8 mA

    114.6 hours   

    1552.7 A*minutes

    30.4 nPa

    2449.2 A*hours


    May 13 2000

  • User run
  • We had a beam dump at 6:20 a.m due to the rf trip. A beam was injected at 6:36 a.m.
  • We permitted to open the beam shutters at 7:05 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    7:05 a.m.

    225.3 mA

    101.7 hours   

    1368.4 A*minutes

    31.8 nPa

    2451.2 A*hours

  • We had a beam dump at 2:23 p.m due to the rf trip. A beam was injected again at 3:08 p.m.
  • We permitted to open the beam shutters at 3:31 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    3:31 p.m.

    225.6 mA

    92.2 hours   

    1248.5 A*minutes

    31.2 nPa

    24528.3 A*hours

  • We had a beam dump at 5:12 p.m due to the rf trip. A beam was injected again at 5:51 p.m.
  • We permitted to open the beam shutters at 6:28 p.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    6:28 p.m.

    199.9 mA

    100.4 hours   

    1203.7 A*minutes

    30.1 nPa

    2453.3 A*hours


    May 14 2000

  • User run(3.0GeV)
  • Beam injection started at 9:07 a.m. We permitted to open the beam shutters at 7:05 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:27 a.m.

    200.4 mA

    94.8 hours   

    1140.5 A*minutes

    30.4 nPa

    2456.0 A*hours

  • We had a beam dump at 1:21 p.m due to the rf trip. A beam was injected again at 1:32 p.m.
  • We permitted to open the beam shutters at 1:52 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    1:52 p.m.

    200.8 mA

    92.5 hours   

    1114.5 A*minutes

    30.1 nPa

    2456.9 A*hours


    May 15 2000

  • We had an electric cut at 4'33 p.m,May 14. All of the electric equipments were down. We are working for restarting up the storage ring.

  • May 16 2000

  • Magnet power supply is malfunctioned due tu the electric cut at 4'33 p.m,May 14.
  • Malfunction of the magnet power supply recovered at 1:34 p.m May 16
  • Beam injection started at 4:04 p.m. We permitted to open the beam shutters at 4:27 p.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    5:51 p.m

    430.8 mA

    42.7 hours   

    1103.9 A*minutes

    19.8 nPa

    2458.4 A*hours


    May 17 2000

  • User run
  • Beam injection started at 9:02 a.m. We permitted to open the beam shutters at 9:16 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:16 a.m

    450.6 mA

    41.3 hours   

    1115.9 A*minutes

    19.7 nPa

    2464.1 A*hours


    May 18 2000

  • User run
  • Beam injection started at 9:03 a.m. We permitted to open the beam shutters at 9:18 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:18 a.m

    451.3 mA

    42.1 hours   

    1141.6 A*minutes

    19.6 nPa

    2472.6 A*hours

  • We had a beam dump at 9:12 p.m, The beam was injected again.
  • Beam injection started at 9:26 p.m. We permitted to open the beam shutters at 9:42 p.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:42 p.m

    451.1 mA

    42.7 hours   

    1156.3 A*minutes

    18.7 nPa

    2477.4 A*hours


    May 19 2000

  • User run
  • Beam injection started at 9:03 a.m. We permitted to open the beam shutters at 9:14 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:14 a.m

    452.0 mA

    43.5 hours   

    1179.2 A*minutes

    20.6 nPa

    2482.1 A*hours


    May 20 2000

  • User run
  • Beam injection started at 9:03 a.m. We permitted to open the beam shutters at 9:14 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:19 a.m

    451.0 mA

    41.5 hours   

    1123.9 A*minutes

    20.5 nPa

    2490.7 A*hours


    May 21 2000

  • User run
  • Beam injection started at 9:01 a.m. We permitted to open the beam shutters at 9:12 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:12 a.m

    451.4 mA

    43.0 hours   

    1163.4 A*minutes

    20.8 nPa

    2499.3 A*hours


    May 22 2000

  • User run
  • Beam injection started at 0:32 a.m. We permitted to open the beam shutters at 0:52 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    0:52

    452.8 mA

    30.3 hours   

    819.1 A*minutes

    18.9 nPa

    2504.4 A*hours

  • 9:00a.m. Single-Bunch study

  • May 23 2000

  • Machine study
  • ID collection study

  • May 23 2000

  • Bonus run
  • Beam injection started at 8:05 a.m.
  • We had a beam dump at 8:44a.m
  • Beam injection started at 8:52 a.m. We permitted to open the beam shutters at 9:07 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:07 a.m

    451.4 mA

    42..8 hours   

    1158.8 A*minutes

    20.2 nPa

    2510.8 A*hours

  • We had a beam dump at 10:57a.m
  • Beam injection started at 11:13 a.m. We permitted to open the beam shutters at 11:27 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    11:27 a.m

    452.1 mA

    42..8 hours   

    1161.5 A*minutes

    21.2 nPa

    2511.6 A*hours


    May 24 2000

  • User run
  • Beam injection started at 9:02 a.m. We permitted to open the beam shutters at 9:21 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:21 a.m

    449.9 mA

    40.3 hours   

    1087.6 A*minutes

    23.2 nPa

    2519.6 A*hours

  • We had a Beam dump at 9:22a.m due to the rf trip (stationB1).
  • Beam injection started at 10:09 a.m. We permitted to open the beam shutters at 10:25 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    10:25 a.m

    451.7 mA

    40.8 hours   

    1105.8 A*minutes

    20.7 nPa

    2519.7 A*hours

  • We had a Beam dump at 1:27p.m due to the rf trip (stationB1).
  • Beam injection started at 1:37 p.m. We permitted to open the beam shutters at 1:53 p.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    1:53 p.m

    451.6 mA

    40.7 hours   

    1103.8 A*minutes

    22.0 nPa

    2521.1 A*hours

  • We had a beam dump at 4:09 p.m
  • Beam injection started at 4:44 p.m. We permitted to open the beam shutters at 5:07 p.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    5:07 a.m

    401.3 mA

    45.1 hours   

    1080.9 A*minutes

    20.5nPa

    2522.2 A*hours


    May 25 2000

  • User run
  • Beam injection started at 8:03 a.m. We permitted to open the beam shutters at 8:13 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    8:13 a.m

    401.9 mA

    44.9 hours   

    1081.8 A*minutes

    21.1 nPa

    2527.4 A*hours


    May 26 2000

  • User run
  • Beam injection started at 9:02 a.m. We permitted to open the beam shutters at 9:39 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:39 a.m

    401.6 mA

    41.3 hours   

    995.0 A*minutes

    23.1 nPa

    2535.6 A*hours


    May 27 2000

  • User run
  • Beam injection started at 9:02 a.m. We permitted to open the beam shutters at 9:15 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:15 a.m

    401.9 mA

    48.6 hours   

    1171.3 A*minutes

    21.1 nPa

    2543.3 A*hours


    May 28 2000

  • User run
  • Beam injection started at 9:02 a.m. We permitted to open the beam shutters at 9:15 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:15 a.m

    401.7 mA

    43.5 hours   

    1048.6 A*minutes

    21.5 nPa

    2551.2 A*hours


    May 29 2000

  • Machine Study
  • Photo - electron yield measurement by SR irradiation
  • 135°Optics
  • Dynamic.ap.

  • May 30, 2000

  • We found a slow vacuum leak at one of the four rf cavities (at an input coupler of cavity No. 3). We repaired this leak, and decided not to use this cavity during operations. We investigated the proper tuner position of the cavity No. 3, where it does not induce any beam instabilities.
  • This adjustment was finished at 15:30, and the user's time (bonus) resumed.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    3:27p.m.

    399.3 mA

    39.7 hours   

    951.3 A*minutes

    17.6 nPa

    2562.8 A*hours


    May 31, 2000

  • User run
  • Beam injection started at 9:04 a.m. We permitted to open the beam shutters at 9:32 a.m.
  • Operation status
  • Time

    Beam current

    Beam lifetime

    I*tau

    Average pressure

    Integrated current

    9:32a.m.

    396.7 mA

    42.1 hours   

    1001.3 A*minutes

    17.6 nPa

    2568.8 A*hours