Numerical Simulations of a Proposed Hollow Electron Beam Collimator for the LHC Upgrade at CERN.

摘要

In the last years the LHC collimation system has been performing over the expectations, providing the machine with a nearly perfect efficient cleaning system. Nonetheless, when trying to push the existing accelerators to - and over - their design limits, all the accelerator components are required to boost their performances. In particular, in view of the high luminosity frontier for the LHC, the increased intensity would ask for a more efficient cleaning system. In this framework innovative collimation solutions are under evaluation: one option is the usage of an hollow electron lens for beam halo cleaning. This work intends to study the applicability of an the hollow electron lens for the LHC collimation, by evaluating the case of the existing Tevatron e-lens applied to the nominal LHC 7 TeV beam. New e-lens operation modes are here proposed to standard enhance the electron lens halo removal effect.