Orbit Response Measurements Update 93010 J Rzepiela Orbit

Orbit Response Measurements Update 9/30/10 J. Rzepiela Orbit Response Update 30 September 2010 1 1 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. Orbit Response Update 30 September 2010 2 2 Jeff Rzepiela rzepiela@slac. stanford. edu

Measurements 3. 464 Ge. V, 250 p. C • LTU 4. 3 Ge. V , 250 p. C • LI 21, LI 27 -30, BSY, LTU, UND (partial) Orbit Response Update 30 September 2010 3 3 Jeff Rzepiela rzepiela@slac. stanford. edu

LI 21 Results BPMS: LI 21: 233 (BPMS 11) Orbit Response Update 30 September 2010 4 4 Jeff Rzepiela rzepiela@slac. stanford. edu

LI 21 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 Orbit Response Update 30 September 2010 5 5 Jeff Rzepiela rzepiela@slac. stanford. edu

LI 21 Results BPMS: LI 21: 233 (BPMS 11) Orbit Response Update 30 September 2010 6 6 Jeff Rzepiela rzepiela@slac. stanford. edu

LI 21 (YCOR) Small error in normal component (as compared to model), large skew component Orbit Response Update 30 September 2010 7 7 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 (gx, gy) as well as rotation (φ). Orbit Response Update 30 September 2010 8 8 Jeff Rzepiela rzepiela@slac. stanford. edu

Corrected results (LI 21) Fit results: Θ= -4º gx=0. 3646 gy=1. 0604 Orbit Response Update 30 September 2010 9 9 Jeff Rzepiela rzepiela@slac. stanford. edu

Corrected results (LI 21) Fit results: Θ= -4º gx=0. 3646 gy=1. 0604 Orbit Response Update 30 September 2010 10 10 Jeff Rzepiela rzepiela@slac. stanford. edu

LI 27 Results Orbit Response Update 30 September 2010 11 11 Jeff Rzepiela rzepiela@slac. stanford. edu

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

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

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

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

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

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

Y Corrs Ycorr 611 Ycorr 747 Orbit Response Update 30 September 2010 Ycorr 657 Ycorr 727 Ycorr 767 18 18 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) Orbit Response Update 30 September 2010 19 19 Jeff Rzepiela rzepiela@slac. stanford. edu

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

Historical comparison 12/02/09: 5. 8 Ge. V 8/31/10: 3. 464 Ge. V Orbit Response Update 30 September 2010 9/17/10: 4. 3 Ge. V 21 21 Jeff Rzepiela rzepiela@slac. stanford. edu