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APEX PowerPoint Presentation

APEX

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APEX

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  1. APEX Fulvia Pilat Time Meeting, April 10 2007

  2. APEX Schedule April 4 2007 Ramps >70 bunches > 1x109ppb Button BPM Trans. monitor IPM Store 12 bunches 0.5-1x109ppb BBQ Injection 3 bunches 0.5-1x109ppb AC dipole Store 6 bunches 0.5-1x109ppb NO rebucketing BBQ Store >12 bunches 0.5-1x109ppb In collision BBQ 07-07 Beam beam compensators Fischer+team 07-06 Nonlinear Chromaticity Luo Tepikian +team 07-29 Beam-Beam TF for lumi Cameron, Drees 07-08 Beta Beat Calaga 07-22 Transition Instability Ptitsyn, Wei +team Back 2 Phys 07-16 Debunched Beam Rev freq Fischer+team 5am 7am 9am 11am 1pm 4pm 5pm

  3. Summary April 4th Most of APEX time went into recovering from quench links and diagnosing a broken ramp (from swaps of blue and yellow current regulator cards done the night before) • APEX starts at 5 am, work at injection gets done • QLI, 7:37am b2-q89 • QLI, 8:10am bo11-qd3 • QLI, 8:29am bo11-qd3 • QLI, 12:22pm b2-q89 14:21pm b2-q89 replaced • QLI, 14:34pm b4-dhx • 15:40pm finally ramp, blue80%, yellow 13% • Nonlinear chromaticity correction in blue operational • 15:40pm end of “APEX”

  4. Beta beat measurements - Calaga First attempt at correction did not work  we’ll try again tonight

  5. Nonlinear chromaticity correctionBLUE OPERATIONAL Luo, Tepikian