ICFA mini-Workshop on "Mitigation of Coherent Beam Instabilities in particle accelerators" MCBI 2019

Session

Session 2

24 Sept 2019, 08:30

Zermatt, CH

Conveners

Session 2: Landau and BNS damping

• Elias Metral (CERN)

12. Stability diagrams for Landau damping

Scott Berg (BNL)

24/09/2019, 08:30

13. Landau damping in the transverse plane

Nicolas Mounet (CERN)

24/09/2019, 09:00

14. Landau damping in the longitudinal plane

Elena Shaposhnikova (CERN)

24/09/2019, 09:30

66. Advanced Landau damping with radio-frequency quadrupoles or nonlinear chromaticity

Michael Schenk

24/09/2019, 10:30

Landau damping is a powerful mechanism to suppress impedance-driven coherent instabilities in circular accelerators. In the transverse planes it is usually introduced by means of magnetic octupoles. We will discuss a novel method to generate the required incoherent betatron tune spread through detuning with the longitudinal rather than the transverse amplitudes. The approach is motivated...

82. Landau Damping with Electron Lenses in Space-Charge Dominated Beams

Yuri Alexahin (Fermilab)

24/09/2019, 11:00

It is shown that the Lorentz forces of a low-energy, magnetically stabilized electron beam, or “electron lens”, can introduce transverse nonlinear focusing sufficient for Landau damping of transverse beam instabilities in accelerators. Unlike other nonlinear elements, the electron lens provides the frequency spread mainly at the beam core, thus allowing much higher frequency spread without...

17. BNS damping

Alexander Novokhatski (SLAC National Accelerator Laboratory (US))

24/09/2019, 11:30