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K-modulation-MD 04.05.2011, 16:00 to 24:00

K-modulation-MD 04.05.2011, 16:00 to 24:00. T. Baer, K. Fuchsberger , J. Wenninger 24.05.2011. Procedure , (e.g. Q6.L5.B2). 2. Modulation. 1. Trim Bump at Quad. Strength change: k 1 ~1.4∙10 -4 (2.5%) Triplet: k 1 ~6∙10 -5 (limited by acceleration). f= 0.02 Hz

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K-modulation-MD 04.05.2011, 16:00 to 24:00

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  1. K-modulation-MD • 04.05.2011, 16:00 to 24:00 • T. Baer, K. Fuchsberger, J. Wenninger • 24.05.2011

  2. Procedure, (e.g. Q6.L5.B2) 2. Modulation 1. TrimBumpatQuad Strength change: k1~1.4∙10-4 (2.5%) Triplet: k1~6∙10-5 (limited by acceleration) • f= 0.02 Hz • 2 oscillations =~100 orbits (100 s) Orbit rms in Arcs: (Example: Bump + 3mm, rms ~ 100 μm

  3. Tune change ± 0.015

  4. Q6.L5.B2

  5. Q6.L7.B2

  6. Q6.R9.B2/BPM.9R6.B2 (Aperturemeter) Large Offset in Orbit. Is it real? • Onlysmalloffset BPM/Quad. • Real beam position: ~1.5 mm!

  7. Summary

  8. Summary • Very clean rmssignals • Position canbedeterminedat least by ±10 μm. • Possibleoptimization: • Automatization (trimbump, startoscillation, acquire, analyse). • Less Datasets (increasefrequency, reduceamplitude) • Analysis oftripletdataongoing.

  9. … the end • Thankyou!

  10. Proposed method • scanΔx with local orbit bump until: beam Δx‘ Δx

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