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ICFA mini-WORKSHOP ON IMPEDANCES AND BEAM INSTABILITIES IN PARTICLE ACCELERATORS

Sep 18 – 22, 2017
Benevento
Europe/Rome timezone

Contribution List

57 out of 57 displayed
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  1. 0. Welcome and general introduction
    Stefania Petracca (SA)
    9/19/17, 9:00 AM
  2. 1. Impedance theory and modeling
    Dr Elias Metral (CERN)
    9/19/17, 9:30 AM
  3. 2. Impedance measurement techniques
    Dr Uwe Niedermayer (TU-Darmstadt)
    9/19/17, 10:00 AM
  4. 4. Electron cloud effects
    Mr Giovanni Iadarola (CERN - Università di Napoli Federico II)
    9/19/17, 11:00 AM
  5. 5. Instability theory and modeling
    Prof. Oliver Boine-Frankenheim (Technische Universität Darmstadt)
    9/19/17, 11:30 AM
  6. 6. Instability observations and cures
    Dr Elena Shaposhnikova (CERN)
    9/19/17, 12:00 PM
  7. 7. Wakefields/impedances for a bunch moving between two corrugated plates
    Karl Bane (SLAC)
    9/19/17, 2:30 PM
  8. 8. Calculation of wakefields for plasma-wakefield accelerators
    Dr Gennady Stupakov (SLAC)
    9/19/17, 2:50 PM
  9. 10. Advanced method of wakefield calculations (numerical methods, parallel computing)
    Dr Erion Gjonaj (TU-Darmstadt)
    9/19/17, 3:10 PM
  10. 11. Analytical impedance models for very short bunches
    Igor Zagorodnov (DESY)
    9/19/17, 3:30 PM
  11. 9. Multi-physics simulations of impedance effects in accelerators
    Dr Carlo Zannini (ADAM)
    9/19/17, 4:20 PM
  12. 13. Impedance Issues in the Design, Measurements, and Beam Commissioning of a Narrow Gap Stripline Kicker For On-Axis Injection
    Dr Stefano De Santis (LBNL)
    9/19/17, 4:40 PM
  13. 30. Eigenmode Computations for Chains of Cavities
    Thomas Flisgen (Helmholtz Zentrum Berlin)
    9/19/17, 5:00 PM
  14. 12. The concept of coupling impedance in the self-consistent plasma wake field excitation
    Prof. Renato Fedele (Scuola Politecnica e delle Scienze di Base, Dipartimento di Fisica, Università di Napoli Federico II and INFN Sezione di Napoli, Napoli, Italy)
    9/19/17, 5:20 PM
  15. 14. "The Birth and the Childhood of the Coupling Impedance and the Stability Maps" Special seminar to celebrate the 50 years of the beam coupling impedance concept
    Vittorio Giorgio Vaccaro (NA)
    9/19/17, 5:40 PM
  16. 23. Challenges and pitfalls for impedance measurements in the lab
    Andrea Mostacci (ROMA1)
    9/20/17, 9:00 AM
  17. 22. 2D and 3D collimator impedance modelling and experimental measurements
    Dr Nicolo Biancacci (CERN)
    9/20/17, 9:20 AM
  18. 93. Continuous-Wave HOM Load Power Computations Based on Single-Bunch Wake Simulations
    Hans-Walter Glock (FG-ISRF)
    9/20/17, 9:40 AM
  19. 21. Needs and solutions for machine impedance reduction
    Dr Christine Vollinger (CERN)
    9/20/17, 10:00 AM
  20. 24. Beam measurements of frequency characteristics of (longitudinal) impedance
    Dr Alexandre Lasheen (CERN)
    9/20/17, 10:50 AM
  21. 27. Beam-based impedance measurement techniques in light sources
    Dr Ryutaro Nagaoka (Soleil)
    9/20/17, 11:10 AM
  22. 110. Comparison of machine impedance calculation with beam based measurements
    Karl Bane (SLAC)
    9/20/17, 11:30 AM
  23. 29. Precise impedance determination from simultaneously measured tunes of unequal charge bunches
    Dr Boris Podobedov (Brookhaven National Laboratory)
    9/20/17, 11:50 AM
  24. 28. An improved method to measure beam impedance with rotating wire. Theoretical and simulation results
    Mr Olav Berrig (CERN)
    9/20/17, 12:10 PM
  25. 32. Role of space charge in coherent instabilities
    Dr Mike Blaskiewicz (BNL)
    9/21/17, 9:00 AM
  26. 34. Chromaticity effects on head-tail instabilities for broad-band impedance using two particle model, Vlasov analysis, and simulations
    Dr Yong Ho Chin (KEK)
    9/21/17, 9:20 AM
  27. 85. TMCI at strong space charge
    Dr Timofey Zolkin (Fermi National Accelerator Laboratory)
    9/21/17, 9:40 AM
  28. 33. Microbunching instability
    Dr Daniel Ratner (SLAC)
    9/21/17, 10:00 AM
  29. 37. Circulant matrix formalism, benchmarks and beam-beam effect in coherent instabilities
    Dr Xavier Buffat (CERN)
    9/21/17, 10:50 AM
  30. 111. How e-cloud in dipoles and quadrupoles can be source of transverse instabilities
    Ms Annalisa Romano (CERN)
    9/21/17, 11:10 AM
  31. 35. Modeling of fast beam ion instabilities
    Lotta Mether (EPFL)
    9/21/17, 11:30 AM
  32. 39. Longitudinal and transverse ions cloud dynamics in an electron ring in presence of electromagnetic fields and gaps
    Mr Alexis Gamelin (Laboratoire de l’Accélérateur Linéaire (LAL))
    9/21/17, 11:50 AM
  33. 40. Mitigation of collective effects by optics optimization and the SPS experience
    Mr Hannes Bartosik (CERN)
    9/21/17, 2:00 PM
  34. 94. Simulation of longitudinal intensity effects with LLRF system (BLonD)
    Dr Helga Timko (CERN)
    9/21/17, 2:20 PM
  35. 86. Observation and active damping of longitudinal coupled bunch instabilities
    Heiko Damerau (CERN)
    9/21/17, 2:40 PM
  36. 95. Challenges in impedance and instabilities computation for new generation light sources
    Serena Persichelli
    9/21/17, 3:00 PM
  37. 45. Vlasov solvers and macroparticle simulations
    Dr Nicolas Mounet (EPFL)
    9/21/17, 3:50 PM
  38. 44. Codes benchmarking for the single-bunch instabilities in electron storage rings
    Dr Haisheng Xu (Institute of High Energy Physics of Chinese Academy of Scineces)
    9/21/17, 4:10 PM
  39. 43. Transverse feedback systems for multi-bunch beam diagnostics and instabilities suppression
    Alessandro Drago (LNF)
    9/21/17, 4:30 PM
  40. 84. Wide-band feedback systems to diagnose and suppress intra-bunch motion in accelerators
    John Fox
    9/21/17, 4:50 PM
  41. 113. Preliminary results from validation measurements of the longitudinal power deposition model for the LHC injection kicker magnet
    Mr Vasileios Vlachodimitropoulos (CERN)
    9/21/17, 6:00 PM
    The MKIs are fast pulsed transmission line injection kicker magnets of the LHC injection system. To shield the ferrite yoke from the beam, by providing a path for the beam image current, a set of 24 conductive wires is placed in the inner part of a ceramic tube along the length of the magnet aperture. Stringent rise-time specifications require that the wires are capacitively coupled to a...
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  42. 96. Damping of transverse instabilities
    Dr Vladimir Kornilov (GSI Helmholtzzentrum)
    9/22/17, 9:00 AM
  43. 97. Concept and simulations of unconventional damping devices: wideband damper and RFQ
    Dr Kevin Li (CERN)
    9/22/17, 9:20 AM
  44. 98. A study of longitudinal effects on transverse Landau damping
    Prof. Ingo Hofmann (GSI Darmstadt)
    9/22/17, 9:40 AM
  45. 99. Beam Transfer Function (BTF) measurements and transverse stability in presence of beam-beam
    Ms Claudia Tambasco (EPFL, Lausanne, Switzerland)
    9/22/17, 10:00 AM
  46. 101. Impedance and instabilities in lepton colliders
    Mauro Migliorati (ROMA1)
    9/22/17, 10:50 AM
  47. 102. Impedance and instabilities in hadron machines
    Benoit Salvant (CERN)
    9/22/17, 11:10 AM
  48. 103. Impedance modeling in low emittance rings
    Dr Alexei Blednykh (BNL)
    9/22/17, 11:30 AM
  49. 104. Instabilities in hadron colliders and role of the transverse damper
    Dr Alexey Burov (Fermilab)
    9/22/17, 11:50 AM
  50. 52. Closing remarks of Session 2: Impedance theory and modeling
    Ursula Van Rienen (uni Rostock)
    9/22/17, 1:30 PM
  51. 53. Closing remarks of Session 3: Impedance measurements and control
    Maria Rosaria Masullo (NA)
    9/22/17, 1:45 PM
  52. 54. Closing remarks of Session 4: Instability theory and modeling
    Prof. Ingo Hofmann (GSI Darmstadt)
    9/22/17, 2:00 PM
  53. 55. Closing remarks of Session 5: Instability modeling, observations and cures
    Mikhail Zobov (LNF)
    9/22/17, 2:15 PM
  54. 56. Closing remarks, acknowledgements and goodbye
    Dr Giovanni Rumolo (CERN)
    9/22/17, 2:30 PM
  55. 38. Coherent head-tail instability in collision with a large crossing angle
    Dr Kazuhito Ohmi ohmi (KEK)
  56. 70. Conclusions
    oral
    This contribution will be the workshop closure with general conclusions from the experience, acknowledgement of participants and farewell
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  57. 3. Impedance Effects on Beam Dynamics in the 50 MeV ThomX Storage Ring
    Mr Alexis Gamelin (Laboratoire de l’Accélérateur Linéaire (LAL))
    poster
    ThomX is a low energy Compton Backscattering Source (CBS) demonstrator which is being built at LAL, Orsay, France. As the 18 m storage ring has a design energy of 50 MeV, the electron beam is very sensible to collective effects. Furthermore the beam is extracted while a new one is injected every 20 ms, and the damping time is about 2 seconds. So the electron dynamics is not damped and the beam...
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