FOPA  —  Closing Plenary   (20-May-05   13:50—17:10)

Chair: N. Holtkamp, ORNL, Oak Ridge, Tennessee

Paper Title Page
FOPA001 The Spallation Neutron Source: A Powerful Tool for Materials Research
 
  • T.E. Mason
    ORNL, Oak Ridge, Tennessee
 
  The wavelengths and energies of thermal and cold neutrons are ideally matched to the length and energy scales in the materials that underpin technologies of the present and future: ranging from semiconductors to magnetic devices, composites to biomaterials and polymers. The Spallation Neutron Source (SNS) will use an accelerator to produce the most intense beams of neutrons in the world when it is complete in 2006. The project is being built by a collaboration of six U.S. Department of Energy laboratories. It will serve a diverse community of users drawn from academia, industry and government labs with interests in condensed matter physics, chemistry, engineering materials, biology and beyond. The design goals, current status and anticipated scientific capabilities of SNS will be summarized.  
FOPA002 XFEL/Short Pulse Science
 
  • J.R. Schneider
    DESY, Hamburg
 
  X-rays are a most powerful tool for 3 dimensional imaging of matter on length scales from mm to nanometer. They allow for highly accurate determination of the position of atoms and their correlated motion in samples with complex structure under extreme temperature or pressure condi-tions, they probe either bulk or surface properties including order-disorder phenomena. With high resolution spectro-microscopy electronic properties of inhomogeneous novel materials are studied in great detail. So far equilibrium states are investigated. The logical next step is to extend our methodology to include the investigation of non-equilibrium, of new states of matter with atomic resolution in space and time. The XFELs provide the necessary very intense flashes of X-rays with wave-lengths down to 0.1 nm with pulse durations of 10 or 100 femtoseconds. Examples of the sug-gested applications of XFELs will be presented. Strategies for performing experiments at LINAC driven light sources will be discussed with emphasis on the synergies expected from a close collaboration between the synchrotron radiation and optical laser communities on one hand, and the accelerator and particle physics communities on the other hand.  
FOPA003 Challenges and Progress in the FAIR Accelerator Project 294
 
  • P.J. Spiller
    GSI, Darmstadt
 
  An international "Facility for Antiproton and Ion Research (FAIR)" was proposed to be built at GSI, providing unique conditions for experiments involving heavy ion and antiprotons beams. The new accelerator complex consists of the fast ramped s.c. heavy ion synchrotrons, SIS100/300 and a storage ring system for experiments with radioactive ions and antiprotons. The two stage concept for SIS100/300 provides optimum conditions for the generation of beams with high intensities per cycle and in average, over a wide energy range and with various time structures. Bunch compression enables a matching to the production targets and storage rings. The storage ring complex was optimized for fast cooling and accumulation of the generated secondary beams. Unique conditions for internal target experiments with radioactive beams will be provided in NESR and for antiproton beams in the high energy storage ring HESR. The new accelerators require R&D work in various fields of technologies and beam physics, as e.g. operation with low charge state, high intensity, heavy ion beams in dynamic vacuum conditions, development of fast ramped s.c. magnets, powerful, low frequency rf systems, stochastic cooling systems and medium energy electron coolers.  
FOPA004 Opportunities and Challenges in Neutrino Physics
 
  • S.G. Wojcicki
    Stanford University, Stanford, Califormia
 
  Funding: This work was supported by the National Science Foundation and the Office of Science of the Department of Energy.

During the last decade a number of key experiments revolutionized our ideas about neutrinos and gave the first indication of the physics beyond the Standard Model. This paper will summarize the current situation in neutrino physics and indicate the key questions that need to be addressed and resolved. Different approaches that are being proposed to address these issues will be described with a special emphasis on the technical challenges inherent in them. The paper will conclude with some more futuristic concepts in accelerator physics that are being discussed today as potential new powerful tools for the study of neutrinos in the future.

 
FOPA005 Science of Rare Isotope Accelerator (RIA) and the Project Status
 
  • W. Nazarewicz
    UTK, Knoxville, Tennessee
 
  Funding: This work was supported in part by the U.S. Department of Energy under Contracts Nos. DE-FG02-96ER40963 (University of Tennessee), DE-AC05-00OR22725 with UT-Battelle, LLC (Oak Ridge National Laboratory).

Low-energy nuclear physics is undergoing a renaissance. The next-generation tools, such as the Rare Isotope Accelerator (RIA), invite us on the journey to the vast territory of nuclear landscape which has never been explored by science. RIA will allow unique insights into the quantum many-body nature of nuclei by providing access to their most extreme manifestations and by providing precise control of the number of neutrons in these systems. RIA-based science is extremely broad and diverse. It spans the gamut from nuclear structure to astrophysics, tests of fundamental laws of nature, and myriad applications. Nevertheless, it is characterized by several encompassing themes that reflect the major challenges facing modern science today, and it has deep links to many other fields: What is the structure of atomic nuclei and how do complex systems derive their properties from their individual constituents? How are the heavy elements created and how do nuclear properties influence the stars? What are the fundamental symmetries of nature? In this talk, I will briefly touch on these themes and relate them to specific areas of RIA research.