Author:
Redaelli S.,Appleby R.B.,Bruce R.,Brüning O.,Kolehmainen A.,Ferlin G.,Foussat A.,Giovannozzi M.,Hermes P.,Mirarchi D.,Perini D.,Rossi A.,Stancari G.
Abstract
Abstract
Electrons lenses produce a high-intensity electron beam and
have a variety of applications to circular hadron
accelerators. Electron beams of different transverse cross sections
and distributions may be designed, depending on the desired
application, and they are produced and steered along the orbit of
the hadron beam, overlapping with it for typical distances of a few
meters before being deflected away and disposed of. Hollow electron
beams find applications to high-intensity beam collimation for
machines like the CERN Large Hadron Collider (LHC). Such devices
can be integrated in a collimation system to improve the
halo-cleaning performance through an active control of the halo
dynamics: the annular distribution of the electrons excites
resonantly the beam tails surrounding the beam core, while the core
itself remains unperturbed, as ideally it only “sees” the
field-free “hole” in the electron distribution. Hollow electron
lenses are part of the upgrade baseline of the High-Luminosity
project of the LHC (HL-LHC) and will be installed in the machine
during a long shutdown in 2025–2027 to mitigate effects from beam
losses so to improve the collimation system performance. This paper
describes the hollow electron lens project within the HL-LHC
collimation upgrade.
Subject
Mathematical Physics,Instrumentation
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献