1. David J. Miller @ Durham 1/9/04 ECFA 1 News, and Charge to Workshop 1.What follows technology choice? 2. Other strategic developments 3. Worldwide Study plans 4. This workshop 5. Future workshops

2. David J. Miller @ Durham 1/9/04 ECFA 2 Technology choice George Kalmus will explain the ITRP process and the give their recommendations. ILCSC in Beijing accepted these recommendations and chose to call the collider the ILC. It will use cold technology, but the whole design will be revisited. It need not look like TESLA. First meeting of accelerator designers from participating labs will be in KEK in November, maybe straight after the ACFA Taipei workshop, i.e. from 13/11/04

3. David J. Miller @ Durham 1/9/04 ECFA 3 - defined by ILCSC scope-panel for ITRP http://www.fnal.gov/directorate/icfa/LC_parameters.pdf Baseline  s = 200-500 GeV, integrated L uminosity 500 fb -1 over 1 st 4 years 80% electron polarisation 2 interaction regions with easy switching Upgrade Anticipate  s  1 TeV,  L = 1 ab -1 over 4 years Options e - e - collisions, 50% positron polarisation, “GigaZ”; high L at Z and at WW threshold, Laser backscatter for  and  e collisions, Doubled L at 500 GeV. Choice among options to be guided by physics needs. Parameters

4. David J. Miller @ Durham 1/9/04 ECFA 4 Designing the ILC ILCSC+ICFA plan a Global Design Initiative (GDI) to begin early 2005, hosted by a substantial laboratory for logistic support. (9 labs have bid to be host; selection panel appointed, European members R.Eichler and S.Bertollucci) There will be a Central Team (selection panel for its leader appointed; Europeans A.Wagner and DJM) with three Regional Teams. An MOU is being drafted for agreement between the GDI and the participating Laboratories.

5. David J. Miller @ Durham 1/9/04 ECFA 5 2004 – ITRP Technology Recommendation (DONE) 2005 – Accelerator CDR 2007 – Accelerator TDR 2008 – LC Site Selection 2015 – Start of Physics GDI Proposed Milestones

6. David J. Miller @ Durham 1/9/04 ECFA 6 Other strategic developments(1) Funding Agencies’ meetings (preparing govts. for ILC) Next will be September 16/17 at CERN, specifically to follow up on technology choice. Directors of the main ILC Labs will be invited. CERN Council 19 July Rome statement, inter alia, - recognises and encourages a TeV LC - suggests taking stock of LHC and accelerator R&D results by 2010, and production of new assessment of physics and technology. - suggests GDI to 2007 should be “light” NOT a new ITRP, say most participants. It is!

7. David J. Miller @ Durham 1/9/04 ECFA 7 Other strategic developments (2) EUROTeV. Very important to have EU support, and significant CERN input. More from Eckhart Elsen. UK accelerator physics inititiative. LC-ABD funded by PPARC and CCLRC for a study of the beam delivery system and instrumentation. (Grahame Blair will talk about both the above) Also two new Accelerator Centres in UK; * Cockroft – Manchester, Liverpool, Lancaster, Daresbury. * Oxford/RHUL. Both will be running courses and looking for international Collaborations.

8. David J. Miller @ Durham 1/9/04 ECFA 8 World Wide Study includes our ECFA Study, + ACFA and ALCPG Co-chairs Jim Brau, University of Oregon. jimbrau@faraday.uoregon.edu David Miller, U. C. London, djm@hep.ucl.ac.uk Hitoshi Yamamoto, Tohoku University, yhitoshi@awa.tohoku.ac.jp Americas Committee Members John Jaros, SLAC (USA), john@slac.stanford.edu Dean Karlen, Victoria (Canada), karlen@uvic.ca Andreas Kronfeld, Fermilab (USA), ask@fnal.gov Mark Oreglia, University of Chicago (USA), oreglia@uchicago.edu Ritchie Patterson, Cornell (USA), ritchie@lns.cornell.edu Asian Committee Members Akiya Miyamoto, KEK (Japan), akiya.miyamoto@kek.jp Atul Gurtu, Tata Institute of Fundamental Research (India), gurtu@tifr.res.in JooSang Kang, Korea University Seoul (Korea), jskang@hep.korea.ac.kr ChangGen Yang, IHEP Beijing (China), yangcg@ihep.ac.cn Wei-Shu(George) Hou, National Taiwan University (Taiwan), wshou@phys.ntu.edu.tw European Committee Members Tiziano Camporesi, CERN, tiziano.camporesi@cern.ch Michael Danilov, ITEP (Russia), danilov@x4u2.desy.de Rolf Heuer, University of Hamburg (Germany), Rolf-dieter.Heuer@desy.de Francois Richard, Orsay (France), francois.richard@cern.ch Ron Settles, Munich (Germany), ron.settles@cern.ch Organising committee

9. David J. Miller @ Durham 1/9/04 ECFA 9 Organizing the Global Experimental Program The ILCSC has asked the Worldwide Study, as its Physics and Detectors Subcommittee, to develop a plan for organizing the experimental program in parallel with the GDI for the machine. This plan should include the following: 1. Ensure that at least two different detector concepts are developed; by worldwide teams which will: - prepare CDR(s) on concepts, by ~2006; - be ready to form the cores of the collaborations when funding is in place and bids are called for. 2. Encourage and coordinate inter-regional R&D on essential detector technologies, and give peer-reviewed recognition to nationally funded R&D programmes as part of the worldwide project. 3. Make sure that vital questions of machine-detector interface and beamline instrumentation are as fully supported as accelerator and detector R&D. This will involve close links with the GDI.

10. David J. Miller @ Durham 1/9/04 ECFA 10 Response to ILCSC request WWS Organizing Committee proposes to: Recognize and coordinate studies on whole detector concepts, and work toward interregional detector TDRs, including a cost document available at the time of the Accelerator CDR. Interface with GDI, especially on Macine-Detector- Interface issues. Keep a register of R&D relevant to LC experimental programs, identify those that are vital or missing, and ensure peer review of R&D proposals. Organize interregional meetings and workshops. Report to ILCSC and ICFA on the matters above. To members of Study (you) and ILCSC HOW?

11. David J. Miller @ Durham 1/9/04 ECFA 11 Discussion in the Community(1) At the Paris LCWS 2004, the ILCSC charge was presented to the community in the opening talk by J. Brau, and in a special session by DJM, followed by a discussion. Following the Paris LCWS (April) and leading up to the Victoria American Linear Collider Workshop (July), the WWS Organizing Committee drafted and distributed a proposal document, which included the creation of a small executive committee (~ 6 members, the Global Experimental Commission - GEC), which would oversee a costing document and detector R&D, receive the detector LOIs, and execute other tasks. HOW?

12. David J. Miller @ Durham 1/9/04 ECFA 12 Discussion in the Community(2) Draft proposal was circulated in the community. Lots of feedback. Community saw GEC as creating a confusing boundary with WWS Organizing Committee. Could weaken WWS, which is an effective bottom-up representative of all physicists interested in LC. WWS has worked effective to coordinate global activities. Instead, now propose that WWS Organizing Committee appoints panels to perform necessary tasks, and retains oversight. (Not necessary to create GEC) WWS-OC revising document – will circulate for more discussion, then submit to next ILCSC meeting (November at KEK?)

13. David J. Miller @ Durham 1/9/04 ECFA 13 Proposed Panels Costing panel: Request inputs from the teams studying each detector concept, ensure the same costing basis, and edit into a single document to be included with the accelerator CDR. Then the panel will stand down. Detector R&D review panel: Maintain a register of relevant R&D, identify vital or missing activities, arrange for peer review of proposals, and endorse approved programs to funding agencies when requested. This panel will stand down when the detector proposals are finalized. MDI panel: Liaise with GDI to coordinate MDI issues between accelerator and experimental teams, and ensure that essential MDI R&D is done. The panel will stand down when the global lab takes over this role. More panels to be appointed as needed.

14. David J. Miller @ Durham 1/9/04 ECFA 14 Proposed Milestones GDI Milestones 2004 – ITRP Technology Recommendation 2005 – Accelerator CDR 2007 – Accelerator TDR 2008 – LC Site Selection Site selection + 1 year Experimental Program Single preliminary costing document for at least one whole- detector concept produced by WWS Costing Panel CDR’s from each detector concept team (expect some individuals to sign multiple CDRs) received by the WWS OC Collaborations form and submit LOIs for proposal to the Global Lab (or GDO?) Global Lab selects experiments and asks for 2 TDRs

15. David J. Miller @ Durham 1/9/04 ECFA 15 Intended matrix structure Detector Concept 1 Detector Concept 2 Detector Concept 3 Detector Concept 4 Tracker R&D A B A C Vertex R&D C C D A Calo. R&D A or B D A B Muons R&D A A B A etc. R&D collaborations (A, B, C etc.) exist in their own right. Concept studies (1, 2, 3, 4 etc.) draw on them as needed – at this stage. CONCEPT STUDIES MUST BE INTER-REGIONAL R&D programmes should try to be.

16. David J. Miller @ Durham 1/9/04 ECFA 16 Globalising the Concept Studies Friday afternoon plenary this week is part of the start (with Victoria and Taipei): Harry Weerts and John Jaros here to present the Silicon-tracking detector concept. Extra meeting Saturday afternoon to enlist participation. Satoru Yamashita and Ties Behnke will present two alternatives for a Large Volume Gaseous-tracking detector concept, growing out of former TESLA, JLC/GLC and American “Large” designs. Need to work out how these (and maybe more) concept teams are organised, how they input to WWS costing panel, how they develop towards CDRs. Discussions in Thurs morning Detector Performance parallel session and Friday afternoon plenary.

17. David J. Miller @ Durham 1/9/04 ECFA 17 Other special sessions here Thursday afternoon, “Test Beams for Calorimetry+” interactive video conference with Asian and American participation (c.f. previous detector R&D conferences including Calorimetry at Montpellier.) VERY IMPORTANT BECAUSE THE LABS NOW WANT STRONG ARGUMENTS FOR SPENDING MONEY ON TEST BEAMS. THERE IS A NEW REPORT ON TEST BEAM AVAILABILITY Can we agree a strong brief message to ICFA, summarising the need? http://www.linearcollider.ca:8080/lc/vic04/abstracts/detector/testbeam/wwlctb_working_group.doc

18. David J. Miller @ Durham 1/9/04 ECFA 18 Cosmology and the Linear Collider New working group; very successful in ALCPG. Manuel Drees and Abdelhak Djouadi convening here (except the UK failed to give Abdel a visa!) We need an experimental convener, and ideally an astronomical cosmologist (volunteers and/or nominations please)

19. David J. Miller @ Durham 1/9/04 ECFA 19 Future workshops ACFA workshop Taipei 9-12 November Next LCWS will be at Stanford in March/April ALCPG also proposing a 2-week meeting in the Rockies in August, with strong worldwide participation (talk to Jim Brau about ideas). When should 2005 ECFA workshop be? June, October, November? OC+conveners will discuss Friday lunchtime.

20. David J. Miller @ Durham 1/9/04 ECFA 20 Future ECFA Study Needed as ILC activity grows, but present Study ends Spring 2005. Must make proposal to September RECFA, so they can send a resolution to December PECFA. Must also draft at Friday’s OC. Need nominations for new chair. Rolf Heuer will collect and pass to ECFA chair.

21. David J. Miller @ Durham 1/9/04 ECFA 21 Have a good workshop! Your first and last speakers (DJM and Brian Foster) are both natives of Durham county, but I’d like to end with a much more powerful local influence; our patron saint, Cuthbert (“Cuddy”), holding a model linac in one hand and blessing our efforts with the other. It’s good to have both Gudi and Cuddy on our side.