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Preliminary Experiment Result Of Linear Optics Correction

Preliminary Experiment Result Of Linear Optics Correction. G. Wang T. Satogata. May 27th, 2009. Typical measured phase (set 15). Measured Baseline Phase-beat (set 1-6). Drive at 0.01 above betatron tune. Measured Baseline Phase-beat (set 7-12). Drive at 0.01 below betatron tune.

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Preliminary Experiment Result Of Linear Optics Correction

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  1. Preliminary Experiment Result Of Linear Optics Correction G. Wang T. Satogata May 27th, 2009

  2. Typical measured phase (set 15)

  3. Measured Baseline Phase-beat (set 1-6) Drive at 0.01 above betatron tune

  4. Measured Baseline Phase-beat (set 7-12) Drive at 0.01 below betatron tune

  5. Measured Phase-beat For 1 Pre-set Error (set 13-18) bo6-tq6 was set to 0.002, drive at 0.01 above betatron tune

  6. Measured Phase-beat For 1 Pre-set Error (set 19-24) bo6-tq6 was set to 0.002, drive at 0.01 below betatron tune

  7. Reconstructed Trim Quad Errors From Measured Phase-beat bo6-tq6 was set to 0.002

  8. Measured Phase-beat For 2 Pre-set Errors (set 25-30) bo6-tq6 and bo10-tq6 were set to 0.002, drive at 0.01 above betatron tune

  9. Measured Phase-beat For 2 Pre-set Errors (set 25-30) bo6-tq6 and bo10-tq6 were set to 0.002, drive at 0.01 below betatron tune

  10. Reconstructed Trim Quad Errors From Measured Phase-beat

  11. Summary • Typical rms phase-beat uncertainty is about 0.04 radian or 2.3 degree, which is around 20% for our typical phase-beat measurement. • We are able to reconstruct the trim quadrupole errors for the chosen bo6-tq6 and bo10-tq6, which do not have large SVD components in small eigenvalue modes (and thus have more tolerance for noises). • In the next experiment, we plan to use other trim quadrupoles to correct one specific trim quadrupole error (test effectiveness of knobs).

  12. Thank you!

  13. Noise Level: 0.015 (~20%) Noise ~20%

  14. Trim Quads Error is Reconstruct able with Proper Cut @ Noise Level: 0.015 (~20%) Noise ~20%

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