1 R. Corsini – CLIC Project Meeting CTF3 Update CTF3 Update R. Corsini for the CTF3 Team 1

2 R. Corsini – CLIC Project Meeting CTF3 Update Conclusions 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 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! 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 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! From December 2013 Project Meeting From December 2013 Project Meeting

3 R. Corsini – CLIC Project Meeting CTF3 Update 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! Status of last year issues

4 R. Corsini – CLIC Project Meeting CTF3 Update 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 Run 1 – summary until now

5 R. Corsini – CLIC Project Meeting CTF3 Update Status – 26 A in CR (factor 8)

6 R. Corsini – CLIC Project Meeting CTF3 Update Status – 26 A in CR (factor 8)

7 R. Corsini – CLIC Project Meeting CTF3 Update Status ~ 23 A through TBTS

8 R. Corsini – CLIC Project Meeting CTF3 Update 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) TWTs feeback (extension of injector feedback) Energy feedback + energy flattening feedback (MKS15) Flattening of BPR 475… 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) TWTs feeback (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…

9 R. Corsini – CLIC Project Meeting CTF3 Update energy flattening feedback (MKS15) BPR 475 flattening feedback Trips MKS02 & MKS 15 Disable MKS15 loading fb and inj. fb Stop energy flattening and BPR 475 D. Gamba

10 R. Corsini – CLIC Project Meeting CTF3 Update Emittance & optics – TL2 Still large Hor emittance Vert emittance small Suspect error in MTV 253 scan (calibration?) Stable Twiss parameters & optics in TL2 P. Skowronski, T. Persson

11 R. Corsini – CLIC Project Meeting CTF3 Update Stripline Drive Beam BPM in TBL (CERN-LAPP) Cavity Main Beam BPM in CALIFES/TBTS (CERN-JAI at Royal Holloway) Electro-optic bunch profile monitor in CALIFES (CERN-Dundee University) 2013 Goals R. Pan, T. Lefebre F. Cullinan, J. Towner, W. Farabolini, M. Wendt… CTF3 as diagnostics test bed

12 R. Corsini – CLIC Project Meeting CTF3 Update CALIFES F. Burkart, O. Stein, W. Farabolini Diamond beam loss detectors

13 R. Corsini – CLIC Project Meeting CTF3 Update CALIFES - bunch length compression CALIFES bunch length measured with streak camera, between 3 and 6 ps rms W. Farabolini, T. Lefebe, S. Mazzoni

14 R. Corsini – CLIC Project Meeting CTF3 Update TBTS 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

15 R. Corsini – CLIC Project Meeting CTF3 Update TBTS – multipolar components W. Farabolini Unfocused beam through structure, No RF Zero crossing, Positive slope Zero crossing, Negative slope Positive crest Negative crest

16 R. Corsini – CLIC Project Meeting CTF3 Update first beam from gun beam in linac beam in CALIFES 16 A in CR – factor 4 7 A in DL factor 2 25 A in CR factor 8 Today 23 A in CLEX factor 8 CTF3 Schedule 2014

17 R. Corsini – CLIC Project Meeting CTF3 Update CTF3 Schedule 2014 Installation TBM / Maintenance klystrons

18 R. Corsini – CLIC Project Meeting CTF3 Update TBM Installation D. Gudkov, G. Riddone, H. Mainaud …