1. Office of Science U.S. Department of Energy U.S. Department of Energy’s Office of Science Raymond L. Orbach Director, Office of Science May 17, 2005 Advancing Energy, Economic and National Security Through Science, Technology and Environmental Stewardship Briefing for the Astronomy and Astrophysics Advisory Committee

2. Office of Science U.S. Department of Energy 1 The Office of Science is the primary source of support for the Physical Sciences. -Provides 42% of federal support to the physical sciences -Provides primary support to select sub-fields (e.g. high energy physics, nuclear physics, nuclear medicine, heavy element chemistry, plasma physics and magnetic fusion, and catalysis.) -Manages long-term, high-risk, high-payoff multidisciplinary science programs to support DOE missions -Directly supports (FY ‘05) the research of around 23,500 Ph.D.s, Post Docs and Graduate Students Constructs and operates large scientific facilities for the future of science. -Accelerators, light and neutron sources, nanotechnology research centers  Used by more than 19,000 researchers every year  Number of users expected to increase dramatically with Spallation Neutron Source (SNS) and nanocenter user facilities commencing operations -Linac Coherent Light Source begins construction  Ten billion times brighter, in the hard x-ray range, than any other light source in the world  new field of ultra-fast science Office of Science

3. U.S. Department of Energy 2 Accelerator based physics : our primary tools  Construction and operation of accelerators and detectors and research activities in these facilities  Proton based accelerator: Tevatron, LHC, K2K, NuMI, MiniBooNE  Electron based accelerator: B-Factories—BaBar and Belle Non-accelerator physics  Atmospheric & solar neutrinos: Super-K, KamLAND  Particle astrophysics & cosmology: GLAST, Auger, VERITAS, SDSS, CDMS-II, AMS, CMB Theory  Elementary particle theory  Major computing efforts: simulation, data storage, distribution, & analysis Technology R&D  R&D for accelerator and detector technologies Elements of Program

4. Office of Science U.S. Department of Energy Cosmic Connections Operating: Sloan Digital Sky Survey – SDSS (w/NASA, NSF, Sloan foundation) 3D sky map, dark energy Supernova Cosmology Project, Nearby Supernova Factory (w/NSF & NASA) dark energy Cosmic Microwave Background (CMB)cosmology Cold Dark Matter Search (CDMS-II) (underground, w/NSF)dark matter in cosmic rays Approved & Under Construction: Large Area Telescope (LAT) – GLAST, 2007 (w/NASA, foreign)gamma rays, dark matter Pierre Auger – ground array in Argentina (w/NSF, foreign)high energy cosmic rays AMS – Alpha Magnetic Spectrometer – ISS (w/NASA, foreign)cosmic antimatter Very Energetic Radiation Imaging Telescope Array System (VERITAS) - telescope in Arizona (w/NSF, SAO)high energy gamma rays AXION dark matter search Proposed: Joint Dark Energy Mission (w/NASA)dark energy Large-aperture Synoptic Survey Telescope – LSST (w/NSF)dark energy