1 / 11

Collimation system upgrade and present CERN plan for Hi- Lumi

Collimation system upgrade and present CERN plan for Hi- Lumi. Lucio Rossi ( slides from R. Assmann, S. Myers, JP Tock) 1st CERN-FNAL collaboration meeting on 11 T. LHC Collimation as Staged System. LHC collimation was conceived in 2003 as a staged system . Phase 1:

hide
Télécharger la présentation

Collimation system upgrade and present CERN plan for Hi- Lumi

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Collimation system upgrade and present CERN plan for Hi-Lumi Lucio Rossi (slidesfrom R. Assmann, S. Myers, JP Tock) 1st CERN-FNAL collaboration meeting on 11 T

  2. LHC Collimation as Staged System • LHC collimation was conceived in 2003 as a staged system. • Phase 1: • For initial beam commissioning and early years of LHC operation. • Not adequate for nominal and ultimate intensity. • Designed, constructed and commissioned 2003 – 2009. • Phase 2: • Upgrade for nominal, ultimate and higher beam intensities. • Issues in efficiency, impedance and radiation impact. • Originally not clear what the solution would be. • By now various upgrade solutions worked out and under design. • IR upgrade: • Adaptation to changes in IR upgrades: space and losses. • Adaptation to phase space modifications (ATS, crab cavities). 0.86A 0.5 A LRossi@FNAL

  3. LHC recap LRossi@FNAL

  4. Overall Collimation Plan • Interimcollimation system (2014 – 2016)Inefficiency: 0.002 % b* ~ 1 – 2 m, 7 TeV Gain ~100 in R2E (IR7IR3) • L ≤ 5 × 1033 cm-2 s-1 > 2 days per setup Full collimation system (2018 onwards)Inefficiency: 0.0004 % b* ~ 0.55 m, 7 TeV L not limited 30 s per setup Radiation optimization 2017 shutdown: IR(1)/2/(5)/7 DS BPM in coll. Radiation opt. TCT’s for IR6? 2013 shutdown: IR3 DScombined cleaning, IR2 TCT’s, TCLP installation? 2021 shutdown: tbd Initial collimation system (2009 – 2012)Inefficiency: 0.02 % b* ~ 1 – 1.5 m, 3.5 TeV R2E limits in IR7? > 4 days per setup Collimation IR Upgrade (2022 onwards)Low b*, 7 TeV TCT’s integrated into IR upgradeCompatibility with crab cavities LRossi@FNAL

  5. Relayout and Integration • Overview Tunnel side / QRL DFBA DFBA Q7 Q7 Q8 Q8 Q9 Q9 Q11 Q11 Q11 CC CC Q10 Q10 4.5 m. 4.5 m. L = 4.5 m L 4.5 m Tunnel side / QRL CC’ DFBA Q7 46 mm L’ = L – 4.5 m = 9.217 m Q9 Q8 Q10 Twocollimators (one per beam) on eachside of Point 3 LRossi@FNAL

  6. FORMER Rough Draft 10 year plan LRossi@FNAL

  7. BUT! New analysis LRossi@FNAL

  8. Not yet approved!

  9. So what to do? • Collimation review on June 14-15 at CERN to decide if go ahead or not for DS in Pont 3. • There willbe a preliminaryreviewassessing th risk of movingsomany cold elements in LHC. • In any case the availability of the 11 T successfulTwin model is « primordial ». • For the moment itis the « desired » tools for P7, IP2, IP1 and IP5, while P3 willbedone by removingmagnets (last MDs shows apparentlywecanrunatInomwithoutupgrading DS P3…underanalysis) • The couplingwithCryocollimatormayevenreduce by a factor 2 the need of collimators • Whatappears sure is P3, P7 and P2 (half?). • The Collimation upgrade dependsstrongly on the LHC behaviour: but SC Magnets R&D is long, and cannotdepend on last news. So weneed to have our plan and firmly go ahead till the 5.5 m Twin. LRossi@FNAL

  10. Couplingwithotherelement • CERN accelerator new project have been orgnanisedinto 4 projects • LHC consolidation : Simon Baird • LIU (LHC Injector Upgrade) : Roland Garoby • HL-LHC (High Luminosity LHC): Lucio Rossi • LinearCollider Project: Steiner Stapnes LRossi@FNAL

  11. HL-LHC Design Study HiLumi LHC Non-HiLumi LHC WP1 Project Management and Technical Coordination WP7 Machine Protection WP8 Collider-Experiment Interface WP2 Accelerator Physics and Performance WP3 Magnet Design WP9 Cryogenics WP10 Energy Deposition and shielding WP11 11 tesla dipole two-in-one WP4 Crab Cavities WP5 IR Collimation WP6 Cold Powering WP12 Integration & (de)installation HL-LHC • To HL are attachedalso: • Collimator(not only the inthe High lumi insertion) • Vacuum, diagnostics, etc… • High Field Magnet • HE-LHC studies LRossi@FNAL

More Related