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

18–22 Sept 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)
    19/09/2017, 09:00
  2. 1. Impedance theory and modeling
    Dr Elias Metral (CERN)
    19/09/2017, 09:30
  3. 2. Impedance measurement techniques
    Dr Uwe Niedermayer (TU-Darmstadt)
    19/09/2017, 10:00
  4. 4. Electron cloud effects
    Mr Giovanni Iadarola (CERN - Università di Napoli Federico II)
    19/09/2017, 11:00
  5. 5. Instability theory and modeling
    Prof. Oliver Boine-Frankenheim (Technische Universität Darmstadt)
    19/09/2017, 11:30
  6. 6. Instability observations and cures
    Dr Elena Shaposhnikova (CERN)
    19/09/2017, 12:00
  7. 7. Wakefields/impedances for a bunch moving between two corrugated plates
    Karl Bane (SLAC)
    19/09/2017, 14:30
  8. 8. Calculation of wakefields for plasma-wakefield accelerators
    Dr Gennady Stupakov (SLAC)
    19/09/2017, 14:50
  9. 10. Advanced method of wakefield calculations (numerical methods, parallel computing)
    Dr Erion Gjonaj (TU-Darmstadt)
    19/09/2017, 15:10
  10. 11. Analytical impedance models for very short bunches
    Igor Zagorodnov (DESY)
    19/09/2017, 15:30
  11. 9. Multi-physics simulations of impedance effects in accelerators
    Dr Carlo Zannini (ADAM)
    19/09/2017, 16:20
  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)
    19/09/2017, 16:40
  13. 30. Eigenmode Computations for Chains of Cavities
    Thomas Flisgen (Helmholtz Zentrum Berlin)
    19/09/2017, 17:00
  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)
    19/09/2017, 17:20
  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)
    19/09/2017, 17:40
  16. 23. Challenges and pitfalls for impedance measurements in the lab
    Andrea Mostacci (ROMA1)
    20/09/2017, 09:00
  17. 22. 2D and 3D collimator impedance modelling and experimental measurements
    Dr Nicolo Biancacci (CERN)
    20/09/2017, 09:20
  18. 93. Continuous-Wave HOM Load Power Computations Based on Single-Bunch Wake Simulations
    Hans-Walter Glock (FG-ISRF)
    20/09/2017, 09:40
  19. 21. Needs and solutions for machine impedance reduction
    Dr Christine Vollinger (CERN)
    20/09/2017, 10:00
  20. 24. Beam measurements of frequency characteristics of (longitudinal) impedance
    Dr Alexandre Lasheen (CERN)
    20/09/2017, 10:50
  21. 27. Beam-based impedance measurement techniques in light sources
    Dr Ryutaro Nagaoka (Soleil)
    20/09/2017, 11:10
  22. 110. Comparison of machine impedance calculation with beam based measurements
    Karl Bane (SLAC)
    20/09/2017, 11:30
  23. 29. Precise impedance determination from simultaneously measured tunes of unequal charge bunches
    Dr Boris Podobedov (Brookhaven National Laboratory)
    20/09/2017, 11:50
  24. 28. An improved method to measure beam impedance with rotating wire. Theoretical and simulation results
    Mr Olav Berrig (CERN)
    20/09/2017, 12:10
  25. 32. Role of space charge in coherent instabilities
    Dr Mike Blaskiewicz (BNL)
    21/09/2017, 09:00
  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)
    21/09/2017, 09:20
  27. 85. TMCI at strong space charge
    Dr Timofey Zolkin (Fermi National Accelerator Laboratory)
    21/09/2017, 09:40
  28. 33. Microbunching instability
    Dr Daniel Ratner (SLAC)
    21/09/2017, 10:00
  29. 37. Circulant matrix formalism, benchmarks and beam-beam effect in coherent instabilities
    Dr Xavier Buffat (CERN)
    21/09/2017, 10:50
  30. 111. How e-cloud in dipoles and quadrupoles can be source of transverse instabilities
    Ms Annalisa Romano (CERN)
    21/09/2017, 11:10
  31. 35. Modeling of fast beam ion instabilities
    Lotta Mether (EPFL)
    21/09/2017, 11:30
  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))
    21/09/2017, 11:50
  33. 40. Mitigation of collective effects by optics optimization and the SPS experience
    Mr Hannes Bartosik (CERN)
    21/09/2017, 14:00
  34. 94. Simulation of longitudinal intensity effects with LLRF system (BLonD)
    Dr Helga Timko (CERN)
    21/09/2017, 14:20
  35. 86. Observation and active damping of longitudinal coupled bunch instabilities
    Heiko Damerau (CERN)
    21/09/2017, 14:40
  36. 95. Challenges in impedance and instabilities computation for new generation light sources
    Serena Persichelli
    21/09/2017, 15:00
  37. 45. Vlasov solvers and macroparticle simulations
    Dr Nicolas Mounet (EPFL)
    21/09/2017, 15:50
  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)
    21/09/2017, 16:10
  39. 43. Transverse feedback systems for multi-bunch beam diagnostics and instabilities suppression
    Alessandro Drago (LNF)
    21/09/2017, 16:30
  40. 84. Wide-band feedback systems to diagnose and suppress intra-bunch motion in accelerators
    John Fox
    21/09/2017, 16:50
  41. 113. Preliminary results from validation measurements of the longitudinal power deposition model for the LHC injection kicker magnet
    Mr Vasileios Vlachodimitropoulos (CERN)
    21/09/2017, 18:00
    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)
    22/09/2017, 09:00
  43. 97. Concept and simulations of unconventional damping devices: wideband damper and RFQ
    Dr Kevin Li (CERN)
    22/09/2017, 09:20
  44. 98. A study of longitudinal effects on transverse Landau damping
    Prof. Ingo Hofmann (GSI Darmstadt)
    22/09/2017, 09:40
  45. 99. Beam Transfer Function (BTF) measurements and transverse stability in presence of beam-beam
    Ms Claudia Tambasco (EPFL, Lausanne, Switzerland)
    22/09/2017, 10:00
  46. 101. Impedance and instabilities in lepton colliders
    Mauro Migliorati (ROMA1)
    22/09/2017, 10:50
  47. 102. Impedance and instabilities in hadron machines
    Benoit Salvant (CERN)
    22/09/2017, 11:10
  48. 103. Impedance modeling in low emittance rings
    Dr Alexei Blednykh (BNL)
    22/09/2017, 11:30
  49. 104. Instabilities in hadron colliders and role of the transverse damper
    Dr Alexey Burov (Fermilab)
    22/09/2017, 11:50
  50. 52. Closing remarks of Session 2: Impedance theory and modeling
    Ursula Van Rienen (uni Rostock)
    22/09/2017, 13:30
  51. 53. Closing remarks of Session 3: Impedance measurements and control
    Maria Rosaria Masullo (NA)
    22/09/2017, 13:45
  52. 54. Closing remarks of Session 4: Instability theory and modeling
    Prof. Ingo Hofmann (GSI Darmstadt)
    22/09/2017, 14:00
  53. 55. Closing remarks of Session 5: Instability modeling, observations and cures
    Mikhail Zobov (LNF)
    22/09/2017, 14:15
  54. 56. Closing remarks, acknowledgements and goodbye
    Dr Giovanni Rumolo (CERN)
    22/09/2017, 14:30
  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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