Nick Walker KEK-DESY meeting 7 th March 2005

N. WalkerKEK-DESY Meeting Project Group Accelerator – EUROTeV – Experimentation Behnke, Elsen, Walker (chair) High Gradient Cavities WP 6 Cryomodules Operability, Reliability, Controls Stabilisation, Vibration LLRF Diagnostics GAN & Communications Accelerator Physics and Design WP 4,5 WP 7 WP 15, 16 WP 8 Computing Detector Scientific Program WP 11 WP 4-7 WP 28,29 XFEL Detector

N. WalkerKEK-DESY Meeting DESYs contributions to the ILC SCRF Linac Technology Development TTF2 - currently a unique facility in the world XFEL -major effort to consolidate TTF technology -industrialisation -reliability -value engineering SRF R&D (FP6 CARE) Major collaboration between EU institutes towards improving SCRF - high-gradient programme (electropolishing)

N. WalkerKEK-DESY Meeting Most Visible ILC R&D at DESY TESLA Test Facility ITRP ‘cold’ decision means TTF and XFEL R&D will continue to be DESY’s major contribution to ILC R&D Most important thing TTF2 can do for ILC is to work!

N. WalkerKEK-DESY Meeting XFEL Synergy WP structure for XFEL project

N. WalkerKEK-DESY Meeting XFEL Synergy Direct 1-1 synergy with ILC

N. WalkerKEK-DESY Meeting XFEL Synergy Significant overlap with ILC

N. WalkerKEK-DESY Meeting XFEL Synergy Potential relevance to ILC

N. WalkerKEK-DESY Meeting Areas of ILC R&D Not Related to SCRF Beam Dynamics Simulations - damping ring low-emittance tuning - electron cloud and other instabilities -main linac / BDS / IP beam stabilisation studies - luminosity performance simulations -beam halo collimation / detector backgrounds Undulator-based Polarised Positron Source Development Simulations of source performance / yield Radiation damage (neutron) estimates spin transport & tuning studies (for polarised source) mostly part of EU-FP6 EUROTeV funding

N. WalkerKEK-DESY Meeting Areas of ILC R&D Not Related to SCRF Diagnostics -PETRA laser wire project (  ATF2 laserwire) -cold BPM (test station in TTF) -TTF-VUV / XFEL: (  z measurement e.g. LOLA) -Fast luminosity monitoring (pair monitor) -Precision polarimetry (low- and high-energy) -Precision spectrometry mostly part of EU-FP6 EUROTeV funding

N. WalkerKEK-DESY Meeting Areas of ILC R&D Not Related to SCRF Fast Kicker Development -R&D needed for XFEL -applicable for DR (depends on final DR bunch spacing) -  ATF2 Fast Intra-train Feedback Development Digital feedback system installed in TTF-VUV Needed for XFEL mostly part of EU-FP6 EUROTeV funding

N. WalkerKEK-DESY Meeting Areas of ILC R&D Not Related to SCRF Reliability & operability -(Clearly) very important for XFEL -Continued studies using Himel code (SLAC) -Benchmarking against existing machines (TTF and HERA – ongoing) Ground motion, vibration & stabilisation -Measurement of spectra at potential ILC sites (on-going) -Characterisation / modelling of ‘cultural noise’ -Investigation of cold linac quad vibration -Passive and active techniques for stabilisation mostly part of EU-FP6 EUROTeV funding

N. WalkerKEK-DESY Meeting Areas of ILC R&D Not Related to SCRF GAN -Understanding the challenges of remote operation (user needs) -Development of Mobile Virtual Laboratory (MVL) as test bed for remote operations -  ATF2? & Communications -Defining required collaboration tools for a global project -Developing & supporting central project management services -Understanding how best to ‘work together’ mostly part of EU-FP6 EUROTeV funding special talk by Ferdi Willeke after coffee

N. WalkerKEK-DESY Meeting DESY, Europe, and the World DESY’s major contribution is the on-going activities related to the preparation for the XFEL TESLA SCRF Linac Technology However, direction and scope of R&D is locked to the XFEL timescale Do not have much flexibility If ILC linac R&D moves away from the basic TESLA concept, synergy with XFEL (and DESY!) will become weaker. For other areas of ILC research, there is more flexibility But for EU funded projects we need to deliver what we promised Major changes in scope and planning maybe problematic (but not impossible). DESY expects to contribute to, but not necessarily lead in these areas.

N. WalkerKEK-DESY Meeting DESY, Europe, and the World DESY can play a central role within Europe for the GDE Leading laboratory for the TESLA Collaboration Coordinating Laboratory for the EU FP6 EUROTeV project (together with CERN) Coordinating laboratory for SRF part of the CARE EU FP6 project. DESY + UK Institutes probably strongest ILC advocates within Europe but hopefully this will change. We strongly believe the best way forward towards realisation of the ILC is a ‘strong collaboration of equal partners’