Dr. Raymond Veness & Dr Rudiger Schmidt (CERN)

The Large Hadron Collider: Extreme Mechanics and Materials Challenges
When Nov 01, 2016
from 02:00 PM to 03:00 PM
Where LR1
Contact Name
Contact Phone 01865-283446
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The Large Hadron Collider (LHC) at CERN operates today at 6.5 TeV, close to the nominal value of 7 TeV. The energy stored in each of the two high intensity proton beams is close to 300 MJ, two orders of magnitude beyond previous accelerators. With such parameters, various unwanted effects due to high intensity beams are observed (instabilities, beam-beam effects, e-cloud effects, unidentified falling objects). A particular challenge is to operate such a collider safely. Already a small fraction of the stored energy is sufficient to damage accelerator equipment or experiments in case of uncontrolled beam loss. Although the beams circulate in ultra-high vacuum, interception of protons must be carefully managed by the highly efficient collimation system that limits beam losses around the ring, by absorbers that ensure protection in case of beam trajectory errors and by beam monitors to measure beam parameters. Material and mechanical design of such devices need to be highly optimised to cope with the beam power. The presentations will introduce the LHC, its challenges and risks. In particular, the experience gained with beam intercepting devices in the LHC as well as in high energy beam test installations will be discussed.