1 / 21

Orbit Response Measurements

Orbit Response Measurements. Update 9/30/10 J. Rzepiela. 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

koko
Download Presentation

Orbit Response Measurements

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Orbit Response Measurements Update 9/30/10 J. Rzepiela

  2. 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. Measurements • 3.464 GeV, 250 pC • LTU • 4.3 GeV , 250 pC • LI21, LI27-30, BSY, LTU, UND (partial)

  4. LI21 Results BPMS:LI21:233 (BPMS11)

  5. 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. LI21 Results BPMS:LI21:233 (BPMS11)

  7. LI21 (YCOR) Small error in normal component (as compared to model), large skew component

  8. 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 (gx, gy) as well as rotation (φ).

  9. Corrected results (LI21) Fit results: Θ= -4º gx=0.3646 gy=1.0604

  10. Corrected results (LI21) Fit results: Θ= -4º gx=0.3646 gy=1.0604

  11. LI27 Results

  12. BSY Results

  13. LTU Results: X Corrs Xcorr 122 Xcorr 148 (offline) Xcorr 178 Xcorr 248 Xcorr 288 Xcorr 348

  14. LTU Results: X Corrs Xcorr 388 Xcorr 448 Xcorr 488 Xcorr 548 Xcorr 588 Xcorr 642

  15. LTU: X Corrs Xcorr 678 Xcorr 718 Xcorr 738 Xcorr 758

  16. LTU: Y Corrs Ycorr 105 Ycorr 133 Ycorr 171 Ycorr 185 Ycorr 253 Ycorr 293

  17. LTU Results: Y Corrs Ycorr 353 Ycorr 393 Ycorr 453 Ycorr 493 Ycorr 553 Ycorr 593

  18. Y Corrs Ycorr 611 Ycorr 657 Ycorr 727 Ycorr 747 Ycorr 767

  19. 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. Historical comparison 12/02/09: 5.8 GeV 8/31/10: 3.464 GeV 9/17/10: 4.3 GeV

More Related