HL-LHC Kick off Internal Meeting

The talk will review briefly the scope, the structure and the management style proposed. Then the situation of the budget for the project at CERN and the status of the FP7 DS HiLumi will be discussed as well implication from the last change of shutdown schedule.

The presentation summarizes the main upgrade challenges from the beam dynamics point of view and presents examples for likely beam parameters for the HL-LHC upgrade.

We review the working package relative to the magnets needed for the high luminosity LHC. Subdivision in task, milestones, deliverables, and interaction with other work packages are given. We outline the main technical challenges and we discuss the desiderata for the date to fix the magnet aperture, which is the fundamental parameter for the magnet design.

Crab cavities are a key element of the HL-LHC project; the ultimate goal is a local scheme with compact crab cavities. The presentation will address the scope of the project, its goals and the strategies to reach these goals, the constraints and resulting technical challenges, the risks and approaches to mitigate the risks, the overall planning and cost estimate and the present status of this international collaborative project.

The high intensity LHC beams are handled with the world's largest and most accurate collimation system ever built. The first phase of this system has been completed for the start of LHC beam commissioning, as part of the LHC collimation project. Several required improvements for the system have been described years ago. The planned work on the collimation system and the required adaptations due to the IR upgrades with crab cavities and low beta* optics are described.

The talk gives an overview of the projects being carried out with the goal of providing the remote powering of the LHC magnets via the use of high-current superconducting links. This includes the activity performed within the R2E consolidation program, which focus on the LHC circuits electrically fed from P1, P5 and P7, and that related to the HL-LHC project. The different requirements and time schedules are presented, with particular attention to the work that will be performed within the IR Upgrade design study.

This talk will give an insight on the organization that is in place to provide project management support to the projects that are on going in the Accelerators and Technology Sector.

The HL-LHC accelerator configuration will request a significant update of the helium cryogenic system. The presentation will review the proposed cryogenic upgrade at the LHC P4 allowing the decoupling of the cooling scheme for the RF cavities from the main magnet circuits as well as the proposal for implementation of two new cryogenic installations at the LHC IP1  &IP5 dedicated to the helium refrigeration capacity for the new insertion regions. Finally, the available option for  supplying cryogenic refrigeration power using an existing helium plant at CERN for tests in the SPS accelerator will be discussed.

The impact of the collision debris and the beam losses on the interaction regions is reviewed, pointing out the critical aspects with respect to a high luminosity scenario and indicating the ruling parameters. The first ones represent the study lines of the workpackage, to be developed on the basis of the optics options and design/layout constraints defined in other workpackages towards the identification of viable solutions from the machine protection point of view.

This presentation is intended to identify the role and support of the HSE Unit, with respect to the inherent safety issues that must be addressed during each phase of the project.
All equipment to be installed and operated on the CERN site must comply with the CERN HSE (Health & Safety and Environmental) regulatory framework.
The main objective of this task is to provide advice to all Work Packages on Radiation Protection aspects (RP) and conventional HSE aspects, including risk assessment methods, choice of materials, and regulatory requirements.

The talk will present a tentative list of beam line hardware changes in the matching sections and corrector magnets required by the beta* targets of the HL-LHC. The list will contain tentative parameters of the new hardware ranked by their beta* reach.