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Summary and Outlook

Summary and Outlook. science case machine design EIC realization. Why EIC?. Because it is essential for the study of the fundamental structure of matter beyond 2010 to understand nucleon and nuclei and to test QCD Context: particle physics search for `God particle’

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Summary and Outlook

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  1. Summary and Outlook • science case • machine design • EIC realization 2nd EIC Workshop

  2. Why EIC? • Because it is essential for the study of the fundamental structure of matter beyond 2010 to understand nucleon and nuclei and to test QCD • Context: • particle physics search for `God particle’ • astrophysical speculation on dark matter and energy • On the timescale of EIC we expect full ab initio QCD calculations of many experimental observables 2nd EIC Workshop

  3. What will we learn from EIC? • Spin structure of the nucleon - gp1(x) at low x dramatic QCD prediction - gluon and sea quark polarization - Bjorken sum rule QCD test - new (GPD, transversity) parton distributions • Partonic understanding of nuclei hot QCD - gluon momentum distribution in nuclei - fundamental explanation of nuclear binding - saturation 2nd EIC Workshop

  4. Machine Design • Mainline machine design reaches luminosity ~ 1033 nucleons cm-2 s-1 ring-ring eRHIC design • Realistic (but aggressive) design based on RHIC and B factory performance • High luminosity requires electron cooling • Cost framework understood ~ 300 – 500 M$ • Other concepts (eRHIC linac-ring, ELIC) should be vigorously pursued to determine realistic designs 2nd EIC Workshop

  5. Luminosity • At any luminosity there will be measurements which are statistically marginal • There is a substantial and excellent part of EIC case realizable without electron cooling of ion beam spin structure of nucleon partonic understanding of nuclei • It is reasonable to consider scenarios where EIC gets underway without electron cooling and the path to full luminosity is staged in time 2nd EIC Workshop

  6. Realization of EIC • 2001 Long Range Plan (LRP) endorsed science favorably and recommended support for R&D • Anticipate next LRP to begin in 2005 • Wish to present science case and machine design at upcoming LRP with goal of receiving high priority for new construction of a high luminosity electron ion collider 2nd EIC Workshop

  7. Issues • Maintain and enhance community wide and international support • Focus and sharpen scientific case • Continue to develop machine designs and options • Several meetings planned for later this year - eRHIC ZDR review ~ May 2004 - workshops on GPDs, saturation ~ late summer - meeting to organize final preparation for LRP ~ early 2005 2nd EIC Workshop

  8. EIC Steering Committee • A. Caldwell (MPI Munich) • A. Deshpande (StonyBrook) • R. Ent (JLab) • G. Garvey (LANL) • R. Holt (ANL) • E. Hughes (Caltech) • K.-C. Imai (Kyoto Univ.) • R. Milner (MIT) • P. Paul (BNL) • J.-C. Peng (Illinois) • S. Vigdor (Indiana Univ.) 2nd EIC Workshop

  9. Summary • 2nd EIC workshop at JLab an outstanding success • Clear and substantial progress since 1st EIC workshop at BNL • Science case for EIC becomes more compelling • Solid machine design for luminosity of ~ 1033 nucleon cm-2 s-1 together with more futuristic concepts having potential for increased luminosity • Essential over next year to prepare for aggressive engagement in the upcoming Long Range Planning Exercise 2nd EIC Workshop

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