1. Preparation of the IA proposals within FP7 Working group “ Novel Accelerating Systems” Erk Jensen (CERN) for the working group: Brigitte Cros (LPGP, U Paris Sud), Gilbert Guignard (CERN), Alban Mosnier (CEA/Dapnia), Vittorio Palladino (INFN Napoli), François Richard (LAL/IN2P3)

2. A brief history At CARE06: –Idea: IA “Novel Acceleration Systems” (NAS, one of 3 planned IA’s), –Consisting of 10 JRA’s, –Based on Letters of Intent received by ESGARD –Total cost then estimated to 83 M€ Dec. 06: after 1 st round of concentration/de-scoping/merging: –Total cost estimate reduced to 55 M€ Jan. 07: CLIC new parameters announced: –Total cost estimate 48 M€ –Proposed to define MICE as TA –Remaining: 8 JRA’s, 2 TA (MICE & CTF3) June: 3 IA’s to be joined into 1! –Reduction requested to total cost of <30 M€ (!), we request guidelines from ESGARD. At the same time: –ILC GDE Europe come with additional requests (DR, BDS, positron source, low emittance beam transport & instrumentation) CARE07, 29. - 31. Octobre, 2007

3. A brief history (contd.) July 23 rd 07: extended ESGARD meeting with directors, guidelines: –Prepare for one IA only, –Define activities „Core“ (15 M€) and „Additional“ (< 8 M€), –Assume ratio contributed/requested budget of 2/1, –Use the “Strategy Document” to define priorities. –Consider to Expatriate Laptech to Laserlab II Postpone Posipol to a later call! End of July: I asked the potential collaborators for detailed feedback, in particular concerning commitments for the matching funds. The received feedback showed: –A huge interest to collaborate, –that the labs are ready to commit money (a lot!), –that this is not a way to reduce the overall budget volume (back up to >50 M€)! CARE07, 29. - 31. Octobre, 2007

4. A brief history (contd.) CARE07, 29. - 31. Octobre, 2007

5. The reductions of October (EU part only): EU 9.10.EU 15.10.EU 31.10. Normal conducting High-Gradient research1’392 k€916 k€862 k€ Linac & FF stabilisation (sub-nm quad. stabilisation)1’034 k€804 k€659 k€ BDS (including crab cavity, laser wire)1’629 k€578 k€556 k€ Drive beam phase (phase monitors)355 k€ 334 k€ Drive beam alignment312 k€ Beam dumps (shock waves, power deposition)202 k€ 175 k€ DR Vacuum (Coatings, NEG, e-cloud suppression)514 k€ 465 k€ DR SC wigglers (prototypes & experiments)912 k€568 k€458 k€ ITB (Instrumentation test beam & experiments)717 k€ FFAG (EMMA)524 k€ 380 k€ Positron source (Undulator, Target, Laser)1’528 k€533 k€462 k€ Others (Laser plasma, RF power, collimator wake)603 k€ Total:9’722 k€4’993 k€4’350 k€ CARE07, 29. - 31. Octobre, 2007 Proposal presently under discussion!

6. In the following, I will present this present “proposal under discussion”! CARE07, 29. - 31. Octobre, 2007 9 work-packages remain: NC high gradient, Stabilisation, BDS, Drive beam phase, Beam Dumps, DR Vacuum, DR SC wiggler, FFAG, Positron source Of these, I will assume that –“FFAG” will be in the new JRA “ANAC”, –the others will be joined in the JRA “NCLinac”, which I will concentrate on. –Should “DR SC wiggler” be joined with other SC magnets? In the following, I will assume this also. I again ask your understanding, but we seem to be aiming at a quickly moving target! I also assume that EC contribution is 30 % of total.

7. NCLinac, distribution by WP’s CARE07, 29. - 31. Octobre, 2007

8. NCLinac, distribution by labs CARE07, 29. - 31. Octobre, 2007

9. NCLinac, by labs and WP’s CARE07, 29. - 31. Octobre, 2007

10. NCLinac, WP1: Normal-Conducting High-Gradient research Building on the success of CTF3 and complementing it, the goal of WP1 is to optimize CTF3 and its use towards –cost- and performance optimized accelerating structures and –their integration in CLIC modules. This also requires –better modelling of breakdown and –better suppression of HOM’s, –experimental verification Partners: CIEMAT, Cockcroft/Manchester, HIP/Helsinki, Uni Uppsala, (CERN) Estimated total: 2.8 M€ This WP is complementary to the “module implementation” which is financed 100% by CERN and not part of this proposal. CARE07, 29. - 31. Octobre, 2007 Atomic level simulations CLIC module

11. NCLinac, WP2: Linac & FF stabilisation Strong synergy between ILC and CLIC! Main goals: –stabilize elements (linac & FF quads, …) to sub-nm level to guarantee luminosity, to this end: –improve low emittance transport simulation, –build and test (ATF2 & CTF3) interferometric monitoring system –develop & implement feedbacks: ILC: intrapulse, CLIC: pulse-to-pulse –Consider “Linear Collider environment”: some elements will be inside the detector, consider accelerator typical noise (magnetic field, coolant flow, radiation …), assure compatibility with other installations. Partners: IN2P3/LAPP, CERN, JAI/Oxford Estimated total: 2.2 M€ WP results also relevant for X-FEL! CARE07, 29. - 31. Octobre, 2007

12. NCLinac, WP3: Beam Delivery System Strong synergy between ILC and CLIC! Main goals: –develop and test at CTF3 a CLIC crab cavity system, –develop tuning procedures (at ATF2) for ILC & CLIC, to achieve 35 nm vertical beam size, –develop BPM’s for BDS, test at ATF2, –develop laser wire scanner & profile reconstruction, test at PETRAIII and ATF2. Partners: Cockcroft/Lancaster&Manchester, STFC/ASTEC, JAI/RHUL Estimated total: 1.85 M€ Requires good coordination with WP2! CARE07, 29. - 31. Octobre, 2007

13. NCLinac, WP4: Drive Beam Phase Control CLIC luminosity sensitive to drive beam phase, requires phase stabilization (feedback) to ≈ 20fs. First step: high resolution φ-measurement! Main goals: Build, develop and test in CTF3 –low impedance φ-pick-up with band-reject filters, –laser system & electro-optical detector –the phase monitor electronics Partners: INFN/LNF, CERN, PSI Estimated total: 1.1 M€ WP results also relevant for X-FEL, electro-optical system also for ILC! CARE07, 29. - 31. Octobre, 2007

14. NCLinac, WP5: Beam Dumps High priority item for ILC! Main goals: –study (at CTF3?) effects of beam generated shock waves on windows, … –study alternative technologies (noble gas, fluidized particle beds, …) Partners: STFC/RAL (Manchester?, Uppsala?, DESY?) Estimated total: 0.6 M€ Must still be better defined! CARE07, 29. - 31. Octobre, 2007

15. NCLinac, WP6: Damping Ring Vacuum CARE07, 29. - 31. Octobre, 2007 Strong synergy between ILC and CLIC, ILC high priority! Main goals: –develop technical solutions for the vacuum system of LC damping rings, to this end: –study coatings with low SEY, low photon reflectivity & reduced desorption –study e-cloud suppression at DAΦNE, photo-emission yield at ESRF, –develop capability to simulate pressure distribution dynamically Partners: INFN/LNF, CERN, ESRF, Cockcroft Estimated total: 1.55 M€ WP6 results are relevant for other vacuum systems (SPS, …)

16. NCLinac, WP7: Positron Source High priority for ILC, synergies with CLIC! Main goals: –Develop build & demonstrate (at Daresbury target facility) a prototype (spinning wheel) target, –Develop, build and measure short Nb 3 Sn undulator prototype –Develop, build and test a polarimeter, –develop helicity flipping schemes, –study spin tracking. Partners: STFC/RAL, Daresbury, DESY/Zeuthen, Uni Durham Estimated total: 1.54 M€ CARE07, 29. - 31. Octobre, 2007

17. WP7(?): DR Superconducting Wigglers Main goals: –Demonstrate technical feasibility of SC wiggler magnet anticipated for CLIC (DR IBS dominated!) –Test with beam at ANKA, –Benchmark IBS theories Partners: FZK/ANKA, CERN, BINP? Estimated total: 1.53 M€ CARE07, 29. - 31. Octobre, 2007 ANKA SC wiggler BINP PM wiggler

18. WP in “ANAC”: FFAG EMMA, the “Electron Model for Muon Acceleration”, is a proof-of principle non-scaling FFAG at Daresbury, scheduled for completion July 2009. Main goals: –upgrade EMMA diagnostics, –study features of non-scaling FFAG’s, –understand their applicability to other applications, like muon and proton acceleration Partners: STFC/RAL, CNRS/LPSC? Estimated total: 1.27 M€ CARE07, 29. - 31. Octobre, 2007 EMMA

19. Transnational Access to MICE Goal: –Allow scientists to travel to and work at RAL. (RAL to provide administration). No contribution to the facility itself. Ideas for studies by external parties: –test non flip optics, –low-beta optics (down to 5 cm vs 42 cm nominal) –other absorber materials He, Li, LiH, etc.. –LN2 cooled RF cavities … and with some hardware upgrades: –test a lithium lense available at Novosibirsk –Muons Inc. to test a section of helicoidal channel (MANX) –test new RF structures CARE07, 29. - 31. Octobre, 2007

20. Summary From the initial ideas (IA “NAS”) until now, this has been a difficult and painful process and … … it isn’t over – but we must proceed fast: Next deadline: deliverables, milestones, schedule and 1 st level WBS: 21 st Oct. 2007! Part of what I presented is in discussion and preliminary, but I needed to provoke your reaction! My apologies again: I wasn’t able to keep you informed about these recent, rapid changes! Thank you! CARE07, 29. - 31. Octobre, 2007