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International Review of the HL-LHC Collimation System

11–12 Feb 2019
CERN
Europe/Zurich timezone

Session

Session 3: Specific design aspects and production status

12 Feb 2019, 08:30
30/7-018 - Kjell Johnsen Auditorium (CERN)

30/7-018 - Kjell Johnsen Auditorium

CERN

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  1. 17. Status of LS2 production and prospect for LS3 (20+10)
    Inigo Lamas Garcia (CERN)
    12/02/2019, 08:30

    • Review where we are: status of ongoing production for LS2
    • Recap. of experience of LS1 production:
    • Plans for future productions: what can we expect for LS3.
    • Comments on the prospect for in-kind contributions

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  2. 18. Performance of new HL collimator designs (20+10)
    Alessandro Bertarelli (CERN)
    12/02/2019, 09:00

    • Status of collimator design. New collimators for IR cleaning
    • Summary of potential failure scenarios and resulting beam impact on the collimator jaws
    • Experience without beam with the prototypes
    • HiRadMat : overview and results. What is still missing? Needs for Run III (with LIU beams)
    • Status of results from radiation damage tests

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  3. 19. New materials: status (20+10)
    Federico Carra (CERN)
    12/02/2019, 09:30

    • Review of the performance of the MoGr without and with coating
    • How can we optimize the production of MoGR?
    • Other viable solutions: status of tests and validation [coated Gr or CFC]
    • What is missing to validate the CuCD?

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  4. 20. Review of vacuum performance (20+10)
    Giuseppe Bregliozzi (CERN)
    12/02/2019, 10:00

    • Review of vacuum tolerances for carbon-based materials
    • Proposed coating process for the collimator jaws
    • Observed 'problems' with the prototypes and proposed mitigation steps
    • IR7 vacuum tolerance in light of the vacuum bump test with beam
    • Other coating implementations for the HL-LHC other than on the collimator jaws

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  5. 21. Collimator controls upgrade plans (20+10)
    Alessandro Masi (CERN)
    12/02/2019, 11:00

    • Review performance of present system
    • Faults driving availability and expectations for HL-LHC
    Solutions being studied for controls upgrade, with timeline
    • Synergy with consolidation plans

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  6. 22. Crystal collimation for lead ion beams (20+10)
    Daniele Mirarchi (University of Manchester (GB))
    12/02/2019, 11:30

    • Layouts and beam test results
    • Operational experience with high intensities in 2018
    • Cleaning performance for ion beam collimation
    • Is it an operational alternative for improving ion beam cleaning?
    • Outcome of the Crystal Collimation day in Oct. 2018 (hardware options for LS2)

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