Present plans CTF 3 Commissioning CTF 3 Committee

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 30 GHz DL & CR Schedule RUN 1 DL, CR, TL 2 TBTS 30 GHz only Installation: T L 2, CALIFES, TBTS, new deflectors CALIFES Installation: Linac only RUN 2 Linac, Ring area, (CLEX) PETS in TBTS RUN 3 tail clipper

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 Goals & milestones 2008 run • 1 st run (April - June) • Injector & Linac: establish stable & documented working point, diagnostics qualification, automatic beam steering & steering algorithm studies, diagnostics consolidation, stability studies, EUROTe. V BPMs • Delay Loop: complete beam optics measurements (dispersion, orbit, kick measurements, matching), re-establish combination • TL 1 & combiner ring: complete optics studies (dispersion, closed orbit correction, matching, tunes, kick measurements, quad displacement evaluation, matching), tune and b function dependence of vertical instability, factor four combination with DL bypass (≥ 10 A) • DL, TL 1 & CR: factor 8 combination (≥ 15 A) • 2 nd run (July - September) • Complete DL + CR, new RF deflectors (20 A ? ) • TL 2 commissioning • First CALIFES commissioning • TBTS commissioning (no PETS) • 3 rd run (September - December) • Complete above program • Coherent Diffraction Radiation tests • TBTS, PETS running in

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 Beams • Nominal 3 GHz (4 A) for DL, CR commissioning • Nominal 1. 5 GHz (4 A) for DL, CR commissioning • 1 A short pulse Eurote. V BPM • Nominal 3 GHz variable length bypass DL/CR, commiss. TL 2, TBTS (no PETS), TBL • CALIFES beams • ultimate beams in CLEX

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 Organization • Two turns / day (8: 00 -14: 00, 14: 00 -20: 00) • Daily meeting at 14: 00 • One machine responsible per turn (RC, SD, FT, PS) + one “co-pilot” (SB, AD, HS, OM, EA…) • Plus collaborators

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 Tentative Schedule – First run Nominal beams up to CT line Beam diag studies EUROTe. V Bunch length meas (2 days) Delay Loop (2 days) BPMs (3 days) Delay Loop (2 days) TL 1 & CR (3 days) DL + TL 1 + CR EU BPMs (2 d) Bunch Length (2 d) CAS Tests CAS Cond & Tests CAS Cond Delay Loop (2 days) TL 1 & CR (3 days)

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 CTF 3 – Layout DELAY LOOP 4 A – 1. 2 ms 150 Mev COMBINER RING DRIVE BEAM LINAC 10 m 30 A – 140 ns 150 Mev CLEX CLIC Experimental Area

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 CTF 3 – R&D Issues - where recombination x 2 bunch length control fully loaded acceleration phase-coding structures 30 GHz recombination x 4 bunch compression PETS on-off structures two-beam 12 GHz acceleration deceleration stability R 1. 1 – structures R 1. 2 – DB generation R 1. 3 – PETS on-off R 2. 1 – structure materials R 2. 2 – DB decelerator R 2. 3 – CLIC sub-unit

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 CTF 3 – R&D Issues - when recombination x 2 bunch length control fully loaded acceleration phase-coding structures 30 GHz recombination x 4 bunch compression PETS on-off structures two-beam 12 GHz acceleration deceleration stability 2010 2009 2008

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 6 A Beam recombination in the Delay Loop (factor 2)

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 Achieved recombination: Drive beam generation • Linac current lower than nominal • DL bypassed (no holes, missing factor 2) • Losses during recombination (instability…) 2. 6 A 8. 5 A 10. 4 A

Present plans - CTF 3 Commissioning CTF 3 Committee 18 April 2008 What is missing ? 7. 5 A But also… 30 A current !