One important upgrade for HL-LHC is the installation of new collimators, called TCLD, in the dispersion suppressors next to IR7 and IR2. The TCLDs are needed for proton and heavy-ion operation to intercept particles that differ from the main beam.
In December 2018, a review of the design of the D2 correctors and HO correctors took place in CERN. The committee supported the selected designs that showed to reach the required performance.
Two contracts for the civil engineering works were adjudicated by the Finance Committee of March 2018 to a consortium MARTI TUNNELBAU, MARTI ÖSTERREICH and MARTI DEUTSCHLAND for the Point 1 works
WP17 Infrastructure, Logistics and Civil Engineering
The construction of the 5.5-m long 11T dipole prototype was completed in May this year after several years of intense work dedicated to the development and optimisation of the special tooling, and of the related manufacturing and inspection procedures.
The 3rd Cost & Schedule Review of the projects HL-LHC and LIU was held at CERN on 26th – 28th of March 2018. As usual, the panel is composed by the CMAC (CERN Machine Advisory Committee) members with the addition of a few other international experts
The 2018 Chamonix workshop featured three sessions for the HL-LHC project. The sessions at Chamonix provided the first chance for a technical and performance review of the project following the re-baselining in 2016.
During a measurement campaign in 2017 at the LHC, it was clearly demonstrated for the first time the beam lifetime improvement due to a compensation of the beam-beam long range effects, using DC current baring wires.
The 6th HL-LHC Collaboration Board took place during the 6th HL-LHC Annual Meeting in November 2016, jointly organized by CEA and CERN in Paris, France.
Following the re-baselining exercise for the HL-LHC project in June 2016, the HL-LHC project implemented several scope changes ith respect to the PDR that was issued at the end of the EU funded HiLumi Design Study.
The HL-LHC magnets and cold powering systems are planned to be tested individually on dedicated test benches in the SM18 test facility at CERN or at the collaborators test facility (e.g. at Fermilab in the USA).
