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Reminder of upcoming milestones

This reminder outlines the upcoming milestones for the LIU-PS project, including performance parameter tables, baseline activity definitions, APT/EVM updates, and draft reports. It also details the management, beam dynamics, magnets, RF systems, and other key aspects of the project. Key focus areas include resonance compensation, RF system improvements, and beam instrumentation developments.*

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Reminder of upcoming milestones

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  1. Reminder of upcoming milestones From meeting LIU-PS 18/09/2012 • For all machines: • Nov. 2012: Table of performance parameters • Jan. 2013: Baseline activities defined • Feb. 2013: Update APT/EVM (cost-to-completion) • March 2013: Draft for Long and Mid Term Pls. • May 2013: Technical design report • Clarify LIU-PS baseline and update APT/EVM basically NOW

  2. EVM update of LIU-PS (1/2) • LIU-PS01: Management • LIU-PS02: Beam Dynamics • LIU-PS03: Magnets • LIU-PS04: RF systems (incl. longitudinal/transverse damper) • 4.1 Low-level RF • 4.2 High power RF (long. damper kicker) • 4.3 Transverse damper • 4.4 RF controls • LIU-PS05: Power converters • LIU-PS06: Beam instrumentation • LIU-PS07: Beam intercepting devices • LIU-PS08: Vacuum system • LIU-PS09: Injection • LIU-PS10: Extraction and transfer • LIU-PS01: Management • LIU-PS02: Beam Dynamics • LIU-PS03: Magnets • LIU-PS04: RF systems (incl. longitudinal/transverse damper) • 4.1 Low-level RF • 4.2 High power RF (long. damper kicker) • 4.3 Transverse damper • 4.4 RF controls • LIU-PS05: Power converters • LIU-PS06: Beam instrumentation • LIU-PS07: Beam intercepting devices • LIU-PS08: Vacuum system • LIU-PS09: Injection • LIU-PS10: Extraction and transfer

  3. EVM update of LIU-PS (2/2) • LIU-PS11: Controls • LIU-PS12: Electrical Systems • LIU-PS13: Cooling and ventilation • LIU-PS14: Installation, transport and handling • LIU-PS15: Civil engineering • LIU-PS16: Radiation protection • LIU-PS17: Interlock systems • LIU-PS18: Alarms • LIU-PS19: Access system doors • LIU-PS20: Survey • LIU-PS21: Commissioning and operation • LIU-PS22: Dismantling • LIU-PS11: Controls • LIU-PS12: Electrical Systems • LIU-PS13: Cooling and ventilation • LIU-PS14: Installation, transport and handling • LIU-PS15: Civil engineering • LIU-PS16: Radiation protection • LIU-PS17: Interlock systems • LIU-PS18: Alarms • LIU-PS19: Access system doors • LIU-PS20: Survey • LIU-PS21: Commissioning and operation • LIU-PS22: Dismantling

  4. Present baseline (1/3)

  5. Present baseline (2/3)

  6. Present baseline (3/3)

  7. Resonance compensation • Compensation of resonances 2Qh+Qv=1, Qh+2Qv=1and 3Qv=1 requires skew sextupoles • Plan: • Re-install existing sextupole magnets during X-mas stand-by • Proof-of-principle beam tests in early 2013 (before LS1!) • Development of new compensation scheme during LS1, potentially including also octupoles (for 4Qv = 1) • Include resonance compensation magnets in LIU-PS03 (magnets) • Include power supplies + cabling for resonance compensation in LIU-PS05 (power converters ) A. Huschauer et al.

  8. RF (high-power and low-level) • Preliminary conclusion of PS-SPS transfer studies: • 2nd 40 MHz cavity will provide more margin (longitudinal emittance and transmission) • Even if 2nd cavity not available, operation possible • Main priority on improving reliability of existing cavities • Keep additional 40 MHz cavity as optional in LIU-PS4.2 (RF, high power) • No immediate justification for complete exchange of power amplifiers 10 MHz • Keep new 10 MHz power amplifiers optional in LIU-PS4.2 (RF, high power) • 1-turn feedback most probably not required on 20 MHz cavities • Keep new 20 MHz 1-turn feedback optional in LIU-PS4.1 (RF, low-level)

  9. Transverse feedback on the flat-top • Successful operation of transverse damper against FT instabilities • Plan (next to fully commissioning the damper): • Validate that observed instabilities are e-cloud driven • Estimate new requirements for the existing damper or an additional dedicated wide-band feedback • Maximum damper strength in CW • Include transverse feedback as baseline action against electron cloud instabilities in LIU-PS4.4 (RF, transverse damper) • Remove coating from project baseline in LIU-PS08(vacuum) horizontal A. Blas, G. Sterbini et al. FB ON FBOFF 10 ms!

  10. Beam instrumentation • Trajectory measurement of LHC-type beams shortly before ejection, when the beam is already bunches with 20/40 MHz • Tentative plan: • Investigate possibility of adding 1/2 transverse wide-band pick-up(s) as copies of existing pick-up in SS94 • Phase advance between pick-ups to be checked • Check needs for application software/LabView read-out • Input to be provided for BI review board on trajectory measurements • Eventually add transverse wide-band pick-ups to LIU-PS06 (beam instrumentation)

  11. Beam dump replacing SS12 ralentisseur • Dump to act as • a collimator to reduce losses at extraction (CT or MTE) • a ralentisseur for the emittance measurements • a fast scraper to measure the tails of the LHC beams • Replace internal dumps in SS47/48 • Alessandro Masifollowing-up development • To be included as baseline in work unit LIU-PS07 (beam intercepting devices)

  12. New vacuum chamber MU41 • Vacuum chamber of magnet unit 41 identified as aperture limitation, causing losses • New vacuum chamber MU41 as project baseline • To be included in LIU-PS08 (vacuum) work unit

  13. Summary • Cost-to-completion to be ready for early 2013 • Relevant changes to LIU-PS baseline: • Resonance compensation • High-power RF • Transverse feedback instead of e-cloud coating • Beam instrumentation • Beam dump replacing SS12 ralentisseur • New vacuum chamber MU41 • Minor changes and updates of all other work units • Please check \\cern.ch\dfs\Departments\BE\Projects\PSUpgrade\WorkPackages_2012-10-08 • Thank you for updating the work units in APT/EVM

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