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Final Progress Report to the Department of Energy's Office of Science on the Committee on Nuclear Physics

Description: The Committee on Nuclear Physics (CNP), under the National Research Council's Board on Physics and Astronomy (BPA), conducted an assessment of the field as part of the BPA's survey of physics in the last decade, titled ''Physics in a New Era.'' The CNP report was published by the National Academy Press in early 1999 under the title ''Nuclear Physics: The Core of Matter, The Fuel of Stars.''
Date: January 1, 2001
Creator: Astronomy, Board on Physics and
Partner: UNT Libraries Government Documents Department

Physics division annual report 1999

Description: This report summarizes the research performed in the past year in the Argonne Physics Division. The Division's programs include operation of ATLAS as a national heavy-ion user facility, nuclear structure and reaction research with beams of heavy ions, accelerator research and development especially in superconducting radio frequency technology, nuclear theory and medium energy nuclear physics. The Division took significant strides forward in its science and its initiatives for the future in the past year. Major progress was made in developing the concept and the technology for the future advanced facility of beams of short-lived nuclei, the Rare Isotope Accelerator. The scientific program capitalized on important instrumentation initiatives with key advances in nuclear science. In 1999, the nuclear science community adopted the Argonne concept for a multi-beam superconducting linear accelerator driver as the design of choice for the next major facility in the field a Rare Isotope Accelerator (WA) as recommended by the Nuclear Science Advisory Committee's 1996 Long Range Plan. Argonne has made significant R&D progress on almost all aspects of the design concept including the fast gas catcher (to allow fast fragmentation beams to be stopped and reaccelerated) that in large part defined the RIA concept the superconducting rf technology for the driver accelerator, the multiple-charge-state concept (to permit the facility to meet the design intensity goals with existing ion-source technology), and designs and tests of high-power target concepts to effectively deal with the full beam power of the driver linac. An NSAC subcommittee recommended the Argonne concept and set as tie design goal Uranium beams of 100-kwatt power at 400 MeV/u. Argonne demonstrated that this goal can be met with an innovative, but technically in-hand, design. The heavy-ion research program focused on GammaSphere, the premier facility for nuclear structure gamma-ray studies. One example of the ground-breaking research with ...
Date: December 6, 2000
Creator: Thayer, K., ed. & Physics
Partner: UNT Libraries Government Documents Department

Physics division annual report 2005.

Description: This report highlights the research performed in 2005 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development. The mission of Nuclear Physics is to understand the origin, evolution and structure of baryonic matter in the universe--the matter that makes up stars, planets and human life itself. The Division's research focuses on innovative new ways to address this mission and 2005 was a year of great progress. One of the most exciting developments is the initiation of the Californium Rare Ion Breeder Upgrade, CARIBU. By combining a Cf-252 fission source, the gas catcher technology developed for rare isotope beams, a high-resolution isobar separator, and charge breeding ECR technology, CARIBU will make hundreds of new neutron-rich isotope beams available for research. The cover illustration shows the anticipated intensities of low-energy beams that become available for low-energy experiments and for injection into ATLAS for reacceleration. CARIBU will be completed in early 2009 and provide us with considerable experience in many of the technologies developed for a future high intensity exotic beam facility. Notable results in research at ATLAS include a measurement of the isomeric states in {sup 252}No that helps pin down the single particle structure expected for superheavy elements, and a new low-background measurement of {sup 16}N beta-decay to determine the {sup 12}C({alpha},{gamma}){sup 16}O reaction rate that is so important in astrophysical environments. Precise mass measurements shed new light on the unitarity of the quark weak-mixing matrix in the search for physics beyond the standard model. ATLAS operated for 4686 hours of research in FY2005 while achieving 95% efficiency of beam delivery for experiments. In Medium-Energy Physics, radium isotopes were trapped in an atom trap ...
Date: March 12, 2007
Creator: Glover, J. & Physics
Partner: UNT Libraries Government Documents Department

Physics division annual report 2006.

Description: This report highlights the activities of the Physics Division of Argonne National Laboratory in 2006. The Division's programs include the operation as a national user facility of ATLAS, the Argonne Tandem Linear Accelerator System, research in nuclear structure and reactions, nuclear astrophysics, nuclear theory, investigations in medium-energy nuclear physics as well as research and development in accelerator technology. The mission of nuclear physics is to understand the origin, evolution and structure of baryonic matter in the universe--the core of matter, the fuel of stars, and the basic constituent of life itself. The Division's research focuses on innovative new ways to address this mission.
Date: February 28, 2008
Creator: Glover, J. & Physics
Partner: UNT Libraries Government Documents Department

Physics with CLAS

Description: The authors describe the physics program and the experimental equipment of the CEBAF Large Acceptance Spectrometer, CLAS. The spectrometer is located in Hall B, one of the three experimental areas at the Continuous Electron Beam Accelerator Facility (CEBAF) operated by the Thomas Jefferson National Accelerator Facility. They review the program to study baryon resonances to demonstrate the multi-particle detection capabilities of the CLAS detector.
Date: September 1, 1997
Creator: Collaboration, E. Smith for the CLAS
Partner: UNT Libraries Government Documents Department

Physics and Government

Description: In defining the powers and duties of the three branches of government, the U.S. Constitution never explicitly referred to Science, except in the patent clause. But many technical responsibilities are implied in references to weights and measures, the census, and the like. Thomas Jefferson, John Adams, and in particular Benjamin Franklin, were highly literate in science, but it was their disciple, President John Quincy Adams who promoted as a matter of policy a direct role of the government in science--in particular with respect to astronomy, land surveys and navigation--all physical sciences. Some agencies of government--notably the National Bureau of Standards and the Department of Agriculture were founded in the early days of the Republic with scientific and technical missions. Since then the involvement of the government with science has waxed and waned but the major expansion of the interaction between physics and government occurred after World War II when physicists demonstrated the power of their craft during mobilization of science in support of the war effort. In discussing the interaction of physics with government we should distinguish ''science in government''--scientific input into policy making--from ''government in science,'' which is the support and management of that part of the overall scientific endeavor for which the government has responsibility. Let me turn first to the subject of physics in government. An overwhelming fraction of governmental decisions today have scientific and technical components; decisions ignoring these components are wasteful at best and can imperil the nation. For this reason governmental bodies at all levels solicit scientific advice--or at least give lip service to the need for such advice. When such advice was deliberately avoided, as President Reagan did before announcing his Strategic Defense Initiative in March 1983, the technically unattainable goal ''to make nuclear weapons impotent and obsolete'' was proclaimed.
Date: August 24, 1999
Creator: Hendry, Nancy H.
Partner: UNT Libraries Government Documents Department

Tevatron physics

Description: These lectures form a personal, and not necessarily comprehensive, survey of physics at the Fermilab Tevatron proton-antiproton collider. They cover detectors, analysis issues, and physics prospects for the current Tevatron run.
Date: January 3, 2003
Creator: Womersley, John
Partner: UNT Libraries Government Documents Department


Description: The prediction and verification of the neutrino are reviewed, together with the V-A theory for its interactions (particularly the difficulties with the apparent existence of two neutrinos and the high-energy cross section). The Brookhaven experiment confirming the existence of two neutrinos and the cross section increase with momentum is then described, and future neutrino experiments are considered. (D.C.W.)
Date: January 1, 1963
Creator: Lederman, L.M.
Partner: UNT Libraries Government Documents Department

The Physics of SERAPHIM

Description: The Segmented Rail Phased Induction Motor (SERAPHIM) has been proposed as a propulsion method for urban maglev transit, advanced monorail, and other forms of high speed ground transportation. In this report we describe the technology, consider different designs, and examine its strengths and weaknesses.
Date: October 1, 2001
Partner: UNT Libraries Government Documents Department

Biological physics

Description: Major goals of biological physics are the understanding of biological systems in physical terms and the study of concepts and laws of complex systems.
Date: September 24, 1998
Partner: UNT Libraries Government Documents Department

Neutrino physics

Description: The field of neutrino physics has expanded greatly in recent years with the discovery that neutrinos change flavor and therefore have mass. Although there are many neutrino physics results since the last DIS workshop, these proceedings concentrate on recent neutrino physics results that either add to or depend on the understanding of Deep Inelastic Scattering. They also describe the short and longer term future of neutrino DIS experiments.
Date: September 1, 2008
Creator: Harris, Deborah A. & /Fermilab
Partner: UNT Libraries Government Documents Department

Physics at the Tevatron

Description: The theme of the XXXIV International Meeting on Fundamental Physics held in El Escorial, Spain on April 2-7, 2006 was ''From HERA and the TEVATRON to the LHC''. This is a summary of the four lectures I presented on ''Physics at the Tevatron''. Heavy quark production and the production of photons, bosons, and jets at the Tevatron are discussed. Also, a detailed study at the ''underlying event'' at CDF is presented together with a discussion of PYTHIA 6.2 tunes. A look back at the ''old days'' of Feynman-Field collider phenomenology is included.
Date: April 1, 2006
Creator: Field, Rick & U., /Florida
Partner: UNT Libraries Government Documents Department


Description: When particle physics is a closed subject which has been condensed into a text book, the material will surely be organized by concepts and not according to what fact was learned on what accelerator. But short of that day facilities must be designed, planned, and developed, and experiments must be executed on one of a number of available accelerators; and a very necessary point of view is to ask what physics can be done with one facility, in contrast to another. It is in this spirit that, in this note, we look at electron colliding beam devices. In the first section we discuss the physics that can be done with colliding electron beams. After some general remarks we review the experiments already performed, and then turn to experiments planned for the future. The physics that can be done with any accelerator is a strong function of the physics of the accelerator. Every reader of this Journal knows what determines the energy of an accelerator, but the physics that determines the beam intensity, quality, and pulse length is perhaps not so well known. In fact, we plan to devote a future Comment to the physics that limits the performance of conventional accelerators. In the second section of this note, we discuss the physics of colliding electron ring devices. Even more so than in conventional accelerators, the performance of colliding-beam devices is dominated by the physics of the machine, and hence our lengthy second section. But we trust it will be interesting, for the physics is subtle and there is beauty in it.
Date: November 18, 1969
Creator: Pellegrini, Claudio & Sessler, Andrew M.
Partner: UNT Libraries Government Documents Department

New Physics Search in Flavour Physics

Description: With the running B, kaon and neutrino physics experiments, flavour physics takes centre stage within today's particle physics. We discuss the opportunities offered by these experiments in our search for new physics beyond the SM and discuss their complementarity to collider physics. We focus on rare B and kaon decays, highlighting specific observables in an exemplary mode. We also comment on the so-called B {yields} {pi}{pi} and B {yields} K{pi} puzzles. Moreover, we briefly discuss the restrictive role of long-distance strong interactions and some new tools such as QCD factorization and SCET to handle them.
Date: January 4, 2006
Creator: Hurth, Tobias & /SLAC, /CERN
Partner: UNT Libraries Government Documents Department

Argonne National Laboratory Physics Division Summary Report: September, October 1960

Description: The use and operation of the Van de Graaff generator are summarized for the period from January 1 to June 30, 1960. Molecular beam study final results are given for Mn/sup 56/, and progress on the new atomic-beam machine is reported to date. A preliminary investigation was made of the neutron total cross section of cobalt. Results are presented. The decomposition of trichlorobromomethane by the isomeric transition of 4.4-hr Br/sup 80m/ and to 1000 deg F. /sup -/, decay of 35.9-hr Br/sup 82/ was studied. The fragmnentation patterns initiated by the two nuclear transitions differ markedly, the one caused by the isomeric transition was dominated by spectra of multiply-charged atomic species, whereas the pattern due to Br/sup 82/ was entirely made up of singlycharged products. An investigition of nondiagonal matrix elements arising in a shell-model treatment of a deformed nucleus showed that their neglect in determining the degree of deformation does not lead to serious error. A previous statement, in a study of collective effects and the shell model, about K = 0 bands in odd-odd nuclei is corrected. The effect of residual interactions is calculated, and the result is applied to Ho/sup 166/. (For preceding period see ANL-6190.) (W.D.M.)
Date: October 1961
Creator: Argonne National Laboratory. Physics Division.
Partner: UNT Libraries Government Documents Department