1. 1 1 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Update 9/30/10 J. Rzepiela Orbit Response Measurements

2. 2 2 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Orbit Response Program Any corrector in any sector is selectable The max range, number of kicks, and settle time are configurable Orbit response at each BPM in sector is measured for each kick Can display measured orbit response, model orbit response, etc.

3. 3 3 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Measurements 3.464 GeV, 250 pC LTU 4.3 GeV, 250 pC LI21, LI27-30, BSY, LTU, UND (partial)

4. 4 4 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LI21 Results BPMS:LI21:233 (BPMS11)

5. 5 5 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LI21 Results (XCOR) Larger signal in normal component (as compared to model) and near zero signal in skew component implies a error in scaling (as opposed to rotation

6. 6 6 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LI21 Results BPMS:LI21:233 (BPMS11)

7. 7 7 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LI21 (YCOR) Small error in normal component (as compared to model), large skew component

8. 8 8 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Orbit Response Fitting Fit data from all x and y corrector kicks Use all BPM data. Fit gain and angle parameters for all BPMs. Correct BPM signals to account for scaling in x and y (g x, g y ) as well as rotation (φ).

9. 9 9 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Corrected results (LI21) Fit results: Θ= -4º gx=0.3646 gy=1.0604

10. 10 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Corrected results (LI21) Fit results: Θ= -4º gx=0.3646 gy=1.0604

11. 11 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LI27 Results

12. 12 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu BSY Results

13. 13 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LTU Results: X Corrs Xcorr 122 Xcorr 348 Xcorr 288 Xcorr 148 (offline) Xcorr 248 Xcorr 178

14. 14 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LTU Results: X Corrs Xcorr 388 Xcorr 642 Xcorr 588 Xcorr 448 Xcorr 548 Xcorr 488

15. 15 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LTU: X Corrs Xcorr 678Xcorr 718 Xcorr 758 Xcorr 738

16. 16 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LTU: Y Corrs Ycorr 105 Ycorr 293 Ycorr 253 Ycorr 133 Ycorr 185 Ycorr 171

17. 17 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu LTU Results: Y Corrs Ycorr 353 Ycorr 593 Ycorr 553 Ycorr 393 Ycorr 493 Ycorr 453

18. 18 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Y Corrs Ycorr 611 Ycorr 767 Ycorr 657 Ycorr 747 Ycorr 727

19. 19 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu General Observations Xcorr scans show generally good agreement with model Ycorr scans for Ycorr 453  767 show generally good agreement with model Ycorr scans for Ycorr 105  393 show poor agreement with model, particularly farther downstream (BPMs 110  450 show better agreement than BPMs downstream)

20. 20 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu

21. 21 Orbit Response Update 30September 2010 Jeff Rzepiela rzepiela@slac.stanford.edu Historical comparison 9/17/10: 4.3 GeV8/31/10: 3.464 GeV 12/02/09: 5.8 GeV