Séminaires et colloques

[sém. doct] POYET Axel : Beam-Beam Wire Compensation in the LHC for the High Luminosity Era

Europe/Paris
Grand amphi (LPSC)

Grand amphi

LPSC

Description

In colliders such as the Large Hadron Collider(LHC) or its future upgrade the High-Luminosity LHC, two proton beams are circulating in opposite direction in two different vacuum chambers before being brought into collisions in several Interaction Points (IP). The goal of a collider is to maximize these proton-proton inelastic collisions but since around those IPs, the two beams therefore share the same vacuum chamber, they also interact electromagnetically. These parasitic collisions, called Beam-Beam Long-Range interactions, spoil the beam lifetime therefore reducing the collider performance. A compensation scheme using DC wires has been proposed in the early 2000's and in 2018 the first experimental demonstration was done in the LHC. In this presentation, we report the mechanism of such a compensation together with the results of the experimental campaign and the tracking simulations.