Ctf3 update r corsini for the ctf3 team
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CTF3 Update R. Corsini for the CTF3 Team. 1. Conclusions. From December 2013 Project Meeting. 2 nd run of 2013 not very lucky : Problem with CALIFES cathode plug-in TWTs availability (from 2 ½ to 2, to 1…) – hope to be solved

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CTF3 Update R. Corsini for the CTF3 Team

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Ctf3 update r corsini for the ctf3 team

CTF3 UpdateR. Corsini for the CTF3 Team

1


Ctf3 update r corsini for the ctf3 team

Conclusions

From December 2013

Project Meeting

  • 2nd run of 2013 not very lucky:

    • Problem with CALIFES cathode plug-in

    • TWTs availability (from 2 ½ to 2, to 1…) – hope to be solved

    • Delays in hardware components (in dogleg and feed-forward exp.)

    • Some issues on klystron availability, operation manpower, infrastructure)

  • However, good progresses in stability, repeatability, operational software, optics & procedures (not covered here)…

  • Future schedule agreed upon, hardware problems on the way to be solved - will restart fast after the short Christmas break, all ready for an exciting 2014!


Ctf3 update r corsini for the ctf3 team

Status of last year issues

  • CALIFES: Fast successful repair, during winter short shut-down

  • TWTs: 1 New one, from new supplier, 2 repaired. Now we have 3 fully operational + one spare. Ordering a second one from Poland. All 3 are working stably since January.

  • Dogleg experiment: all hardware installed – start scheduled in summer

  • Feed-forward experiment: amplifiers expected for Easter, all other hardware ready (will also receive two new phase monitors during 2014 – can start with present one only, and monitor phase in PETSs)

  • Klystron availability: very good progress

  • Operation manpower – still a bottleneck, but…

  • An exciting 2014 has started!


Ctf3 update r corsini for the ctf3 team

Run 1 – summary until now

30 Janfirst beam from gun

17 Febfirst beam in spectrometer 10 (3 GHz)

18 Febfirst 3 GHz beam in CR, first 1.5 GHz beam in linac

19 Febfirst CALIFES beam

21 Febfirst 1.5 GHz beam to CR

24 Febfirst combination 4 beam (1.5 GHz with phase switches)

26 Feb14 A (factor 4) extracted from CR

27 Febfirst beam in CLEX (uncombined)

4 Marfirst beam (3 GHz) to – and through – DL

5 Mar full combination factor 2 in DL (7 A)

13 Marbeam (uncombined) end of TBL / 3 GHz factor 4 optimized, 16 A

19 Marfirst drive beam to TBTS for Uppsala beam tests (factors 1 to 4)

21 Marfirst factor 8 recombination ~ 20 A

25 Margood factor 8, ~ 25 A ~1% stability

9 Aprtransport to TBTS, > 20 A


Ctf3 update r corsini for the ctf3 team

Status – 26 A in CR (factor 8)


Ctf3 update r corsini for the ctf3 team

Status – 26 A in CR (factor 8)


Ctf3 update r corsini for the ctf3 team

Status ~ 23 A through TBTS


Ctf3 update r corsini for the ctf3 team

Stability – Feedbacks

  • Gun current feedback (plus flattening on request)

  • RF compression system temperature (local + global)

  • Local RF phase feedback on each klystron

  • Injector feedback (MKS 2 and 3)

  • RF amplitude flattening feedback

  • Beam loading feed-back (MKS 5 to 15)

  • TWTsfeeback (extension of injector feedback)

  • Energy feedback + energy flattening feedback (MKS15)

  • Flattening of BPR 475…

A. Andersson, A. Dubrowski, T. Persson, P. Skowronski, L. Malina, D. Gamba…


Ctf3 update r corsini for the ctf3 team

Trips MKS02 & MKS 15

D. Gamba

Stop energy flattening and BPR 475

BPR 475 flattening feedback

Disable MKS15 loading fb and inj. fb

energy flattening feedback (MKS15)


Ctf3 update r corsini for the ctf3 team

Emittance & optics – TL2

  • Still large Horemittance

  • Vertemittance small

  • Suspect error in MTV 253 scan (calibration?)

  • Stable Twiss parameters & optics in TL2

P. Skowronski, T. Persson


Ctf3 update r corsini for the ctf3 team

CTF3 as diagnostics test bed

Electro-optic bunch profile monitor

in CALIFES

(CERN-Dundee University)

Stripline Drive Beam BPM in TBL

(CERN-LAPP)

R. Pan, T. Lefebre

2013 Goals

Cavity Main Beam BPM

in CALIFES/TBTS

(CERN-JAI at Royal Holloway)

F. Cullinan, J. Towner,

W. Farabolini, M. Wendt…


Ctf3 update r corsini for the ctf3 team

CALIFES

Diamond beam loss detectors

F. Burkart, O. Stein, W. Farabolini


Ctf3 update r corsini for the ctf3 team

CALIFES - bunch length compression

  • CALIFES bunch length measured with streak camera, between 3 and 6 psrms

W. Farabolini, T. Lefebe, S. Mazzoni


Ctf3 update r corsini for the ctf3 team

TBTS

  • 22-23 A through PETS (factor 8)

  • Up to 60 MW produced – halfway with On-Off mechanism

  • Yesterday: about 50 MW in structure, no breakdowns

  • Ongoing studies on DB deceleration, coupling etc…

W. Farabolini, J.L. Navarro,

N. Vitoratou, V. Ziemann, J. Oegren


Ctf3 update r corsini for the ctf3 team

TBTS – multipolar components

W. Farabolini

Positive crest

Zero crossing,

Negative slope

Unfocused beam

through structure,

No RF

Zero crossing,

Positive slope

Negative crest


Ctf3 update r corsini for the ctf3 team

CTF3 Schedule 2014

beam in linac

first beam from gun

beam in CALIFES

16 A in CR – factor 4

25 A in CR

factor 8

7 A in DL factor 2

23 A in CLEX

factor 8

Today


Ctf3 update r corsini for the ctf3 team

CTF3 Schedule 2014

Installation TBM / Maintenance klystrons


Ctf3 update r corsini for the ctf3 team

TBM Installation

D. Gudkov, G. Riddone, H. Mainaud …


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