Loss of Landau damping leading to a single bunch longitudinal instability has been observed in the LHC during the ramp and on the 3.5 TeV flat top for small injected longitudinal emittances. The first measurements are in reasonable agreement with the threshold calculated for the expected longitudinal reactive impedance budget of the LHC as well as with the threshold dependence on beam energy. The cure is a controlled longitudinal emittance blow-up during the ramp which for a constant threshold through the cycle should provide an emittance proportional to the square root of energy
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Loss of Landau damping leading to a single bunch longitudinal instability has been observed in the L...
Loss of Landau damping leading to a single bunch longitudinal instability has been observed in the L...
At the moment longitudinal beam parameters in the LHC are fixed at the lowest and highest energies [...
The main purpose of this MD was to study longitudinal and transverse beam dynamics in the LHC. Eight...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
A large number of collective instability mechanisms act on high-intensity beams. It is necessary ...
The LHC relies on Landau damping for longitudinal stability. To avoid decreasing the stability margi...
The MD was devoted to studies of longitudinal beam stability on the flat bottom and during the ramp ...
At intensities of $2.6 \times 10^{11}$ protons per bunch (ppb), required at SPS injection for the Hi...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Loss of Landau damping leading to a single bunch longitudinal instability has been observed in the L...
Loss of Landau damping leading to a single bunch longitudinal instability has been observed in the L...
At the moment longitudinal beam parameters in the LHC are fixed at the lowest and highest energies [...
The main purpose of this MD was to study longitudinal and transverse beam dynamics in the LHC. Eight...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
The Landau damping mechanism plays a crucial role in providing single-bunch stability in the LHC, hi...
A large number of collective instability mechanisms act on high-intensity beams. It is necessary ...
The LHC relies on Landau damping for longitudinal stability. To avoid decreasing the stability margi...
The MD was devoted to studies of longitudinal beam stability on the flat bottom and during the ramp ...
At intensities of $2.6 \times 10^{11}$ protons per bunch (ppb), required at SPS injection for the Hi...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...
Beam stability is an essential requirement for particle accelerators. Longitudinal coupled-bunch ins...