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An Overview of Collective Effects in 3rd Generation Light Sources

An Overview of Collective Effects in 3rd Generation Light Sources. At John Adams Institute, 03 February 2011, Oxford UK R. Nagaoka, Synchrotron SOLEIL, Gif-sur-Yvette, France. An Overview of Collective Effects in 3rd Generation Light Sources …. R. Nagaoka.

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An Overview of Collective Effects in 3rd Generation Light Sources

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  1. An Overview of Collective Effects in 3rd Generation Light Sources At John Adams Institute, 03 February 2011, Oxford UK R. Nagaoka, Synchrotron SOLEIL, Gif-sur-Yvette, France

  2. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 02/26 Content: 1. Introduction 2. Induced EM self-field 3. Notion of Wake field 4. Geometric wake field and numerical (GdfidL) calculations 5. Impedance 6. Beam spectra 7. Equations of collective motions 8. Beam spectra overlap with impedance 9. Single bunch instabilities 10. Multibunch instabilities 11. Numerical methods of instability studies 12. Summary

  3. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 03/26

  4. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 04/26 What could be the origins of collective forces? (Resonant) interactions with self-induced EM fields (resistive-wall/geometric/CSR) (AW Chao, “Physics of collective beam instabilities…”) Beam-ion interaction (YH. Chin, “Experimental study of FBII at PLS”, BIW 2000)

  5. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 05/26 Why do they become an issue for 3rd generation light sources? High average/bunch current aimed Small aperture all around the ring (low gap ID sections/higher magnetic fields) 10 mm gap ID (Insertion Device) chamber at SOLEIL Vertical half aperture (standard) of some light sources Low emittance optics and its consequence on instability Low dispersion  low a Short bunch length  Wider spectra  Stronger interactions with high frequency wakes

  6. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 06/26

  7. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 07/26

  8. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 08/26 (AW Chao, “Physics of collective beam instabilities…”)

  9. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 09/26 (AW Chao, “Physics of collective beam instabilities…”)

  10. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 10/26 (AW Chao, “Physics of collective beam instabilities…”)

  11. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 11/26

  12. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 12/26

  13. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 13/26 (From JL Laclare’s lecture note)

  14. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 14/26

  15. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 15/26

  16. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 16/26

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  18. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 18/26

  19. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 19/26

  20. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 20/26

  21. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 21/26

  22. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 22/26

  23. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 23/26

  24. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 24/26

  25. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 25/26

  26. An Overview of Collective Effects in 3rd Generation Light Sources … R. Nagaoka At JAI, Oxford, 03 February 2011 26/26

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