1Reminder of upcoming milestones

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

From meeting LIU-PS 18/09/2012

NOW

2

• LIU-PS01: Management• LIU-PS02: Beam Dynamics• LIU-PS03: Magnets• LIU-PS04: RF systems (incl. longitudinal/transverse

damper)4.1 Low-level RF4.2 High power RF (long. damper kicker)4.3 Transverse damper4.4 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 RF4.2 High power RF (long. damper kicker)4.3 Transverse damper4.4 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

EVM update of LIU-PS (1/2)

3EVM 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

4Present baseline (1/3)

5Present baseline (2/3)

6Present baseline (3/3)

7Resonance compensation• Compensation of resonances

2Qh + Qv = 1, Qh + 2Qv = 1 and 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 )

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8RF (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)

9Transverse 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)

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10 ms!

horizontal

FB ONFBOFF

10Beam 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)

11Beam 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 Masi following-up development

To be included as baseline in work unit LIU-PS07 (beam intercepting devices)

12New 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

13Summary

• 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