International Review of the HL-LHC Collimation System

Session

Session 1: Review of the operational experience in Run I and Run II

11 Feb 2019, 09:30

30/7-018 - Kjell Johnsen Auditorium (CERN)

4. Overview of present collimation performance (20+10)

Roderik Bruce (CERN)

11/02/2019, 09:30

• Evolution of settings and protected aperture for small beta*
• Cleaning performance throughout the years
• Performance of IR cleaning (incoming and outgoing)
• Relevant system faults and HL-LHC protected aperture
• System failures, availability and sources of downtime
• Review of beam loss cases inducing damage

5. Beam losses, lifetime and operational experience at 6.5 TeV (20+10)

Belen Maria Salvachua Ferrando (CERN)

11/02/2019, 10:00

• Review beam losses and lifetime for protons and ions
• Stability and reproducibility: collimation settings
• Stability and reproducibility: orbit and optics
• Tail population measurements
• Experience with beam failures damaging the collimator

6. Performance of new designs deployed in Run II and plans for Run III (20+10)

Alessio Mereghetti (CERN)

11/02/2019, 10:30

• New jaw design and performance of BPM collimators
• Operational performance of the TCSPM prototype in 2017-2018
• Software improvements and performance in Run II: alignment and BPM interlocks (including machine learning)
• Prospect for further improvements, including machine learning
• Recap. of Run III layouts