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CTF3 Update R. Corsini for the CTF3 Team

CTF3 Update R. Corsini for the CTF3 Team. 1. Run 1 – fast update. Consolidated factor 8 combination Routinely operating with factor 8 this year, 28 A Huge progress in reliability (3 TWTs , klystrons) – stability – r epeatibility

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CTF3 Update R. Corsini for the CTF3 Team

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  1. CTF3 UpdateR. Corsini for the CTF3 Team 1

  2. Run 1 – fast update • Consolidated factor 8 combination • Routinely operating with factor 8 this year, 28 A • Huge progress in reliability (3 TWTs, klystrons) – stability – repeatibility • Still working on dispersion control, emittance, transport to CLEX • TBTS • Nominal field level, large reserve in power • Wake-field monitor tests ongoing (renewed system) • Studies on multipolar RF fields, BD kicks, beam coupling studies, flash-box (Uppsala) • TBL • Not a lot of beam-time (vacuum leaks), some problem with high-current transport • CALIFES experiments: • Electro-Optical bunch length monitor, excellent first results! • BLM studies (diamond detector) started, continuation of BPMs… • Phase feed forward • Preparatory studies very successful (TL2 optics, bump closure, phase measurements…)

  3. Outlook • Still one week of operation • Window for Two-Beam Module installation: 23rdJune - 22ndSeptember(tight but…) • MDKs maintenance and other repairs/upgrades in the shadow of the module • PHIN run from 28thJuly • Beam-loading dog-leg experiment • RF conditioning from beginning of 7th July • Beam testing from mid August • DB preparation from 1st September (up to tail-clipper dump) • Phase feed forward • Amplifiers at CERN next week… high priority at restart • TBL • New PETS tank installed • High priority, work on high current transport • TBTS ongoing activities to be continued and extended with the TBM – • CALIFES experiments also to be continued

  4. RESERVE SLIDES

  5. Beam quality: Horizontal emittance: CR combination 8, end of TBL line in CLEX ~ 400 um Vertical emittance:CR combination 8, end of TBL line in CLEX ~ 140 um (target 150 um) Stability: Routinely < 5 10-4 from linac About 5 10-3 CR combination 8 Losses: < 10% CR combination factor 8 Repeatibility: Blue line: CR combination on 29 April, evening Red line: CR combination at start-up (no adjustments done) on 30 April

  6. Linac Delay Loop 1st turn Combiner Ring Status – 28 A in CR (factor 8) 4th turn

  7. Status – 28 A in CR (factor 8)

  8. Status – transport to CLEX, ~ 28 A before the wall (factor 8)

  9. Run 1 – summary until now 30 Jan first beam from gun 17 Feb first beam in spectrometer 10 (3 GHz) 18 Feb first 3 GHz beam in CR, first 1.5 GHz beam in linac 19 Feb first CALIFES beam 21 Feb first 1.5 GHz beam to CR 24 Feb first combination 4 beam (1.5 GHz with phase switches) 26 Feb 14 A (factor 4) extracted from CR 27 Feb first beam in CLEX (uncombined) 4 Mar first beam (3 GHz) to – and through – DL 5 Mar full combination factor 2 in DL (7 A) 13 Mar beam (uncombined) end of TBL / 3 GHz factor 4 optimized, 16 A 19 Mar first drive beam to TBTS for Uppsala beam tests (factors 1 to 4) 21 Mar first factor 8 recombination ~ 20 A 25 Mar good factor 8, ~ 25 A ~1% stability 9 Apr drive beam transport to TBTS, > 20 A 10 Apr two-beam acceleration, ~ nominal CLIC gradient 100 MV/m 14 Apr New TL2 optics for phase feed-forward commissioned, phase slow correction tested 16 Apr drive beam transport to CLEX > 23 A (TBL > 20 A)

  10. CTF3 Schedule 2014 Installation TBM / Maintenance klystrons

  11. TBM Installation D. Gudkov, G. Riddone, H. Mainaud …

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