Status of CTF 3 G Geschonke CERN CTF

Status of CTF 3 G. Geschonke CERN CTF 3 Collaboration Board May 2009 G. Geschonke 1

Contributions (September 2008) to be updated!! CTF 3 Collaboration Board May 2009 G. Geschonke 2

New contributions Ciemat: tanks and assembly of 3 more PETS 100 k€ (without rods and brazed parts) IFIC Valencia: all Beam position monitors for TBL, UPC Barcelona: all BPM analog electronics LAPP: All digital electronics for TBL BPMs + developments for CLIC French white paper contribution: 4. CLIC/CTF 3 Objet Matériel (k€) 4. 1 4. 2. 2 4. 3. 1 4. 3. 2 4. 3. 3 4. 4. 1 4. 4. 2 4. 5 Participations aux études et instrumentation faisceau Participations au design des cavités CLIC module 12 GHz RF network components for 8 PETS in TBL Construction d'un test stand 12 GHz Modulateur Compresseur de pulse RF Réseau et composants RF Participation to the stabilisation of optical elements Instrumentation spécifique (LAPP/CNRS) Instrumentation spécifique (IRFU/CEA) Studies on CLIC positron sources (LAL) Sous-total CTF 3 Collaboration Board May 2009 G. Geschonke Main d'oeuvre (hommesmois) Prix MO Total (k€) 107, 04 Remarques 0 12 249 6 53, 5 302, 5 CEA 218 5 44, 6 262, 6 CEA 398 156 50 12 12 1 107, 0 8, 9 505, 0 263, 0 58, 9 CEA CEA 74 36 321, 1 395, 1 CNRS 50 12 107, 0 157, 0 CEA 24 1195 120 CEA CNRS 856, 1 2051, 1 3

New collaborations II Greece: NTU Athens : Two senior physicists, two students for two years University Patras: Two senior engineers, two students for two years University patras: One senior physicist, one senior engineer, two students for two years University Karlsruhe: 0. 2 FTE SC specialists, Ph. D student CTF 3 Collaboration Board May 2009 G. Geschonke 4

Present CTF 3 status 2004 Thermionic gun 2005 Linac DL CR 2006/7 CLEX 2007 -2009 30 GHz production building in 2006/7 Photo injector / laser (PETS line) tests from Oct. 2008 TL 2 2008 and test stand CLEX building: Everything installed (except TBL) Commissioning started CTF 3 Collaboration Board May 2009 G. Geschonke 5

Status CLEX (CLIC Experimental Area) existing building Beam from CR/TL 2 Test Beam Line TBL Two Beam Test Stand Probe Beam All Beam lines installed, except TBL and operated with beam ! (ITB is not part of the base-line programme) CTF 3 Collaboration Board May 2009 G. Geschonke 6

Organisation Project management at CERN regular installation / operation meetings CTF 3 Committee Monthly meetings on Thursday afternoon, participation via Web. Ex possible CTF 3 Collaboration meeting Plenary meeting once a year, well attended by almost all collaborating institutes last: January 2009 With the machine almost finished, shall we continue? (I think yes. . . . ) CTF 3 Collaboration Board May 2009 G. Geschonke 7

New installations: RF deflectors CTF 3 Collaboration Board May 2009 G. Geschonke 8

CTF 3 combiner ring - latest status Recombination at higher current achieved DL bypassed (no holes, missing factor 2) Current (A) 280 ns 1 st turn of 1 st pulse 2 nd turn of 1 st pulse and 1 st turn of 2 nd pulse 3 rd turn of 1 st pulse, 2 nd turn of 2 nd pulse, 1 st turn of 3 rd pulse All 4 pulses

New Installation: Tail clipper § shorten bunch trains into CLEX § Beam dump after Combiner Ring bea mf rom CR strip-line kicker CIEMAT Bea mt o. C LE X movable beam dump (CERN) CTF 3 Collaboration Board May 2009 G. Geschonke 10

Tail Clipper Strip-line kicker Pulser CTF 3 Collaboration Board May 2009 G. Geschonke 11

New installation: Tail Clipper II • A combination of internal and external shielding was implemented in the design: – Internal: A Cu absorber (12 cm) was added downstream to the graphite core • The absorbed dose in the quadrupole magnet was reduced to 18 MGy after one year operation – External: 10 cm-thick lead plate added downstream the TCC CTF 3 Collaboration Board May 2009 G. Geschonke 12

CDR Experiment after Combiner Ring CTF 3 Collaboration Board May 2009 G. Geschonke 13

CDR Experiment • Installed the interferometer (right hand picture) • Photo diode (incl. beam splitter) in the OTR optical line installed (left hand picture) First signals observed ! CTF 3 Collaboration Board May 2009 G. Geschonke 14

Probe Beam Overall responsibility of IRFU (DAPNIA), CEA, Saclay, RF gun responsibility of LAL 200 Me. V bunch charge 0. 5 n. C number of bunches 1 - 64 K steerer position monitor RF pulse compression Laser profile monitor 2 x 45 MW 10 20 25 beam dump 25 quadrupoles rf gun cavity 15 MV/m 17 MV/m compression acceleration focusing coils LIL sections CALIFES CTF 3 Collaboration Board May 2009 G. Geschonke RF deflector spect. magnet A. Mosnier, CEA Dapnia 15

Klystron and BOC Califes Photo Injector waveguide RF distribution Accelerating sections RF deflector for diagnostics CTF 3 Collaboration Board May 2009 G. Geschonke 16

Califes Second commissioning phase from 30 th of March to 9 th of April 2009 A laser system in a nearly perfect reliable working state (no longer use of the dark current) Missing: power phase shifter of the section 1 (its construction progresses carefully) • • • Laser pulses 7 ns (10 bunches) QE = 0. 5%, 0. 2 n. C/bunch UV Laser energy/bunch: 0. 29 m. J (nominal 1. 93) Optics measurements started reentrant cavity BPS commissioned CTF 3 Collaboration Board May 2009 G. Geschonke 17

Two Beam test Stand All hardware installed ! Commissioning with beam ongoing Beam in both lines up to end ! PETS (CERN) was installed in October, first accelerating structure in 2009 CTF 3 Collaboration Board May 2009 G. Geschonke 18

PETS high power tests at CERN (TBTS) Model with time dependant coupling and phase Igor Syratchev Model with constant coupling and phase Event with breakdown coupling Event with breakdown phase The full scale PETS testing will be restarted in June 2009

CTF 3 Collaboration Board May 2009 G. Geschonke 20

Test Beam Line TBL PETS design • High energy-spread beam transport decelerate to 50 % beam energy • Drive Beam stability • Stability of RF power extraction total power in 16 PETS: 2. 5 GW • Alignment procedures 5 MV/m deceleration (35 A) 165 MV output Power 2 standard cells, 16 total CTF 3 Collaboration Board May 2009 G. Geschonke PETS development: CIEMAT BPM: IFIC Valencia and UPC Barcelona 21

TBL • Prototype PETS + vacuum tank (CIEMAT) installed • Precision quadrupole movers are being built by CIEMAT, three installed CTF 3 Collaboration Board May 2009 G. Geschonke 22

TBL • All quadrupole magnets (BINP) at CERN • Prototype BPM (BPS) installed, tested. Series ordered (IFIC) • Read-out electronics will be provided by UPC and LAPP • All vacuum equipment available In summary: everything covered, except 15 PETS Tender for 7 more will go out in the next weeks (only bars) three tanks + assembly at Ciemat the remaining 4 to be taken care of by CERN installation summer 2010 Eight to be ordered in 2010. CTF 3 Collaboration Board May 2009 G. Geschonke 23

Photo Injector - laser smaller emittance, faster phase coding, no “satellite bunches” LAL RAL CERN Cs 2 Te photo cathode 3% QE 40 hours life time pulse train: 1. 5 ms, charge per bunch: 2. 33 n. C bunch spacing 0. 67 ns number of bunches: 2332 diode pumped Nd: YLF laser 10 m. J IR / bunch 0. 37 m. J UV on cathode /bunch Laser made enormous progress: PHIN: about 2/3 of nominal energy on cathode (360 n. J, 250 n. J nominal) nominal charge/bunch 2. 3 n. C Califes: 200 n. J / 900 nominal Laser line finished (DEPARTEMENT DE PHYSICO-CHIMIE, DEN/Saclay 0. 2 n. C Phase-coding missing CTF 3 Collaboration Board May 2009 G. Geschonke 24

Status of the PHIN photoinjector PHIN-2 gun brazed at LAL – tested o. k. delivery of PHIN-2 gun from LAL to CERN: 20 May preparation for bake-out, installation + assembly (with help from LAL – MERCI!), waveguides, etc. ? ready in September ? – yes ! CTF 3 Collaboration Board May 2009 G. Geschonke RF conditioning: started in October shutdown (klystron shared with Combiner Ring deflectors) 25

Photoinjector PHIN very successful runs end 2008/2009 With beam transverse optics + beam-loading studies long-term behavior (Qe) to be studied Phase coding to be demonstrated PHIN design achieved Apr. 2009 RF power [MW] unloaded 13 13 beam energy [Me. V] 5 -6 5. 3 number of bunches 1908 3000 bunch spacing [ps] 666. 7 2. 3 ~2. 3 (@500 ns) 1. 5 (@1270 ns) 5 0. 8 bunch length FWHM [ps] < 10 ? rms. energy spread [%] <2 0. 5 n. emittance [p mm mrad] < 25 5 -7 vacuum pressure [mbar] < 2 x 10 -10 charge per bunch [n. C] repetition rate [Hz] Frank Tecker < 4 x 109 (no NEC) Slide 26 CLIC-ACE, 26. 5. 2009

12 GHz stand-alone Test-Stand schedule from last September: Project Meeting 08/2008 CTF 3 Collaboration Board May 2009 G. Geschonke 27 27

RF power testing 12 GHz stand-alone power source klystron is being produced at SLAC Final tests at SLAC: December 2009 Delivery to CERN: March 2010 Modulator to be ordered by IRFU (white paper) ? ? starts to be on the critical path all the rest is on track 30 GHz programme is coming to an end in 2009 CTF 3 Collaboration Board May 2009 G. Geschonke 28 Derived from NLC 11. 4 GHz klystron

Conclusions Exciting year ahead for operation: • Full bunch combination with phase-coding, Delay Loop and Combiner Ring • Operate Two-Beam Test Stand for structure / PETS tests • Continue Califes commissioning • Test TBL PETS Except TBL all beam lines are complete 12 GHz power stand on critical path Very good perspectives to meet our goals in 2010 CTF 3 Collaboration Board May 2009 G. Geschonke 29

CTF 3 operation 1 staff + 1 fellow + 1 Research Associate operate routinely the machine + support from other staff partially + 1 fellow for stability/feed-back studies 1 white paper post to be opened now maximize run time by 2 ‘shifts’ per day presently not done any more Supervision of linac by shift operators foreseen and starting Weekly supervisor to coordinate activity Daily commissioning meeting Remarks: Work concentrated on commissioning of new components Increased complexity Higher demand for availability of components Full recombination (DL + CR) to be demonstrated Operation becomes more demanding in terms of stability Review the performance and identify bottlenecks Frank Tecker Slide 30 CLIC-ACE, 26. 5. 2009