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R. Corsini – CLIC Project Meeting CTF3 Update

CTF3 UpdateR. Corsini for the CTF3 Team

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R. Corsini – CLIC Project Meeting CTF3 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…)

Run 1 – fast update

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R. Corsini – CLIC Project Meeting CTF3 Update Outlook

• Still one week of operation• Window for Two-Beam Module installation: 23rd June - 22nd September (tight

but…)• MDKs maintenance and other repairs/upgrades in the shadow of the module

• PHIN run from 28th July• 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

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R. Corsini – CLIC Project Meeting CTF3 Update

RESERVE SLIDES

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R. Corsini – CLIC Project Meeting CTF3 Update

Repeatibility:

Blue line: CR combination on 29 April, eveningRed line: CR combination at start-up (no adjustments done) on 30 April

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 linacAbout 5 10-3 CR combination 8Losses: < 10% CR combination factor 8

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R. Corsini – CLIC Project Meeting CTF3 Update

Status – 28 A in CR (factor 8)

Linac

Delay Loop

Combiner Ring

4th turn

1st turn

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R. Corsini – CLIC Project Meeting CTF3 Update

Status – 28 A in CR (factor 8)

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R. Corsini – CLIC Project Meeting CTF3 Update

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

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R. Corsini – CLIC Project Meeting CTF3 Update

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 linac19 Feb first CALIFES beam21 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 CR27 Feb first beam in CLEX (uncombined)

4 Mar first beam (3 GHz) to – and through – DL5 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 A25 Mar good factor 8, ~ 25 A ~1% stability

9 Apr drive beam transport to TBTS, > 20 A10 Apr two-beam acceleration, ~ nominal CLIC gradient 100 MV/m14 Apr New TL2 optics for phase feed-forward commissioned, phase slow correction tested16 Apr drive beam transport to CLEX > 23 A (TBL > 20 A)

Run 1 – summary until now

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R. Corsini – CLIC Project Meeting CTF3 Update CTF3 Schedule 2014

Installation TBM / Maintenance klystrons

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R. Corsini – CLIC Project Meeting CTF3 Update TBM Installation

D. Gudkov, G. Riddone, H. Mainaud …