When operated with the nominal bunch spacing of 25 ns, the Large Hadron Collider (LHC)
suffers from significant electron cloud effects. During the second operational run (Run 2) of …

Electron cloud effects are one of the main limitations of the performance of the LHC and its
injectors. Enormous progress has been made in the simulation of the electron cloud build-up …

Abstract Operation of the Large Hadron Collider with proton bunches spaced 25 ns apart
favours the formation of electron clouds. In fact, a slow emittance growth is observed in …

At the beginning of the 2016 run, an anomalous beam instability was systematically
observed at the CERN Large Hadron Collider (LHC). Its main characteristic was that it …

We present a linearized method to study transverse instabilities due to electron clouds. It is
based on an accurate and compact characterization of the cloud dipolar and quadrupolar …

The formation of electron clouds in the arcs of the Large Hadron Collider (LHC) has been
identified as one of the main limitations for the performance of the machine. In particular, the …

Electron cloud effects are among the main performance limitations for the operation of the
Large Hadron Collider with 25 ns bunch spacing. Electrons impacting on the beam screens …

During Run 2, the 25 ns bunch spacing was routinely used for proton physics operation at
the LHC. With this bunch spacing, electron cloud effects are significantly more severe than …

Secondary electron emission in resonance with an alternating electric field can lead to
avalanche electron multiplication. The underlying mechanism is called multipactor effect …

The heat load on the beam screens of cold magnets and drift sections in the HL-LHC arcs is
estimated considering power deposition from impedance, synchrotron radiation and electron …