1. APEX RUN-11 APEX Schedule May 11, 2011 Injection 12am8am BBA Minty, Jordan, Liu, Rob, Rob, Kevin, … Spin Flipper Bai, Pablo, Oddo, Craig, Kevin IPM calibration R. Connolly, Minty, Marusic 1am2am IPM calibration R. Connolly, Minty, Marusic Injection 6am IP Transfer Matrix Tepikian, Ptitsyn On/Off momentum beta beat, and beta* measurement Calaga, White, Luo, Bai 5am ORM for GOFB Minty, Liu, Rob, Rob, Kevin, … Store

2. APEX RUN-11 IPM Channel2Channel Calibration PI: R. Connolly, M. Minty, S. Tepikian Confirmed that the emittance dependence on beam position at IPM, i.e. separation bumps at IP2 was due to the gain depletion of the MCPs at the center of the measurement aperture

3. APEX RUN-11 IPM Channel2Channel Calibration Uncorrected data and indicates a vertical beam size increase of 16% or emittance increase of 35% when bump is removed Same data with gain and offset corrections. Now the size change is 5%, about the scatter in shot-shot measurements

4. APEX RUN-11 Blue Spin Flipper Commissioning: M. Bai, P. Oddo, C. Dawson, T. Roser, P. Pile, … 1 st ac dipole bump 2 nd ac dipole bump both ac dipole bumps

5. APEX RUN-11 Blue Spin Flipper Commissioning: M. Bai, P. Oddo, C. Dawson, T. Roser, P. Pile, … #5 #1 #2#4 Each individual ac dipole DSA response Conclusion: H DSA response is due to the difference of roll of each ac dipole took both 1024 turn by turn bpm data and million turn bpm data for all cases. Offline analysis to extract the roll of each ac dipole

6. APEX RUN-11 BBA Reproducibility: M. Minty, J. Ziegler,… May 2, In Yellow ring with 9GeV Au beam May 11, In Blue ring with 100 GeV Au beam Checked stability of quadrupole power supply Yi6-qf3-ps is stable from tune data Checked stability of corrector power supplies Yo5-tv3, yi6-tv2 and yi6-tv4 current reproducibility reaches the power supply regulation specs, i.e. +-50A/2^12= 24 mA reproducibility of bump settings are limited by corrector power supply controller resolution

7. APEX RUN-11 BBA Reproducibility

8. APEX RUN-11 Measure Twiss and Coupling PI: S. Tepikian, V. Ptitsyn

9. APEX RUN-11 Measure Twiss and Coupling Yellow Ring IP6 Varied Q1, Q2 and QS Beta*: 0.875m Horizontal, 0.878m vertical Yellow Ring IP8 Varied Q1, Q2 and QS Beta*: 0.923m Horizontal, 0.919m Vertical Plan Need to compare this with the analysis of coupling-free to demonstrate the effect of coupling on beta* measurement Repeat yellow measurement with better vertical tune measurements Measure blue ring IPs

10. APEX RUN-11 Effect of Measured ORM for GOFB PI: Chuyu Liu, M. Minty, Rob M, Rob H

11. APEX RUN-11 Effect of Measured ORM for GOFB With model matrix With measured matrix Time domain Frequency domain

12. APEX RUN-11 Off Momentum Beta Beat PI: R. Calaga, Y. Luo, S. White, M. Bai ~40% chromatic beta beat was observed during 250 GeV pp run in 2009 Two correction techniques: adjust phase advance between IP6 and IP8: R. Calaga correct non-linear chromaticity: Y. Luo Measured on-momentum optics ~ 20% beta beat(peak) in both rings Blue beta* Yellow: first attempt of radial steering killed beam orbit xmean wasn’t properly zeroed before activating radial steering

13. APEX RUN-11 Off Momentum Beta Beat

14. APEX RUN-11 APEX Schedule May 25, 2011 Injection 8am 11pm BBA Minty, Jordan, Liu, Rob, Rob Beam-beam Space charge Alexei 10am2pm Local decoupling Zimmer, Vadim Bai Injection IP Transfer Matrix Tepikian, Ptitsyn Off momentum beta beat measurement/correction Calaga, White, Luo, Bai 6pm 10 Hz GOFB for Ramp Minty, Liu, Rob, Rob, GRD Store 12pm Ramp Dynamic beta* knob GRD, Al 5pm Local decopling Zimmer, Vadim, Bai 8pm Back2Physics 12am Q1 modulation for beta* Yun, Al