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Do we have an Aperture Kicker for the LHC?

Do we have an Aperture Kicker for the LHC?. Kicker Hardware Kick Classification Examples DA at Injection and Collision Conclusion. Kicker. Puls Generator. MKQ. MKA. Circuit Diagram. 3300V. 800V. 900V. The “Keys” in CCR. Kick Classification. Linear Coupling (SPS) R. Tom ás et al.

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Do we have an Aperture Kicker for the LHC?

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  1. Do we have an Aperture Kicker for the LHC? Kicker Hardware Kick Classification Examples DA at Injection and Collision Conclusion LHCCWG - Frank Schmidt, ABP

  2. Kicker LHCCWG - Frank Schmidt, ABP

  3. Puls Generator MKQ MKA LHCCWG - Frank Schmidt, ABP

  4. Circuit Diagram 3300V 800V 900V LHCCWG - Frank Schmidt, ABP

  5. The “Keys” in CCR LHCCWG - Frank Schmidt, ABP

  6. Kick Classification LHCCWG - Frank Schmidt, ABP

  7. Linear Coupling (SPS) R. Tomás et al. Linear coupling compensation and tracking data at all BPMs to compare the machine model to the data Linear coupling can be treated as any other resonance LHCCWG - Frank Schmidt, ABP

  8. Missing Sextupoles (SPS) (F. Schmidt, R. Tomas et al.) Before Specially arranged SPS configuration for extraction sextupoles + + + + - - - - (3,0) resonance driving terms Data fully decohered (factor 2 correction applied) Comparison with nominal model One extraction sextupole accidentally disconnect After LHCCWG - Frank Schmidt, ABP

  9. Uncompensated Skew Sextupole Resonance (PSBooster) (P. Urschütz, M. Benedikt) phase space vertical motion CERN PS data vertical plane 3Qy = 16 and (0, -2) spectral line Uncorrected machine beam losses FFT LHCCWG - Frank Schmidt, ABP

  10. Corrected Skew Sextupole Resonance (PSBooster) (P. Urschütz, M. Benedikt) phase space CERN PS data vertical plane 3Qy = 16 and (0, -2) spectral line Resonance compensated with skew sextupoles Setting based on the reduction of the (0, -2) line amplitude vertical motion beam losses FFT LHCCWG - Frank Schmidt, ABP

  11. Dynamic Aperture SPS 1988/89Gareyte, Hilaire, Schmidt et al. LHCCWG - Frank Schmidt, ABP

  12. DA at Injection and Collision LHCCWG - Frank Schmidt, ABP

  13. Conclusion • Except for may be the AC-dipole at Injection the answer to the original question is: NO, we do not have an Aperture Kicker!! • BUT: If we are really courageous we can upgrade the MKA from 890V to 4kV  Injection: 22.5 s Collision: 6.3 s • No hardware upgrade except: LHCCWG - Frank Schmidt, ABP

  14. “Back” of Puls Generator LHCCWG - Frank Schmidt, ABP

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