Dr. Vincent Baglin

CERN, Switzerland
Vincent Baglin holds a Phd in Physics and Technology of Large Instruments obtained at the University Paris Diderot in 1997 with the subject: Photodesorption study of technical surface held at cryogenic temperature. They've worked in the CERN vacuum group since December 1993 participating to the LHC design study, production, installation and operation. Vincent was leading the LHC Beam vacuum Section from Jan 2008 to Dec 2014 during the LHC commissioning phase until nominal luminosity and they're currently leader of the Vacuum Studies and Measurement Section in charge of simulation, instrumentation, and laboratory work. Since 2014, they are also the work package leader for the vacuum system of the HL-LHC project with the objective to increase by one order of magnitude the integrated LHC luminosity delivering 3 000 fb^-1 by the 40ies.

Talk title: The high-luminosity large hadron collider vacuum system
The High-luminosity Large Hadron Collider presently under construction at CERN will deliver an integrated luminosity of 3 000 fb^-1 by the 40ies. To this aim, 1.2 km of long straights around ATLAS and CMS will be rebuilt and their final focussing triplets will be upgraded to a more powerful version with larger aperture allowing the desired increases of luminosity. By mitigating beam induced pressure rise, the vacuum system will grant a reasonable background to the experiments. Using tungsten shielded beam screens inserted into the 1.9 K cold bore of the 60 m long cold mass string, the vacuum system will also provide a protection of these superconducting magnets against radiation damage originating from energetic debris escaping out of the luminous collision point. The presentation will discuss the challenges, design choices, construction status and installation plan of the HL-LHC vacuum system.