Download or read book The Bremsstrahlung Tagged Photon Beam in Hall B at the Jefferson Laboratory written by and published by . This book was released on 2000 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe the design and commissioning of the photon tagging beamline installed in experimental Hall B at the Thomas Jefferson National Accelerator Facility. This system can tag photon energies over a range from 20% to 95% of the incident electron energy, and is capable of operation with beam energies up to 6.1 GeV. A single dipole magnet is combined with a hodoscope containing two planar arrays of plastic scintillators to detect energy-degraded electrons from a thin bremsstrahlung radiator.
Download or read book The Commissioning of the Hall B Beamline of Jefferson Lab for Coherently Producing a Beam of Linearly Polarized Photons written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The set of experiments forming the g8 run took place this past summer (06/04/01- 8/13/01) in Hall B of Jefferson Lab. These experiments made use of a beam of linearly-polarized photons produced through coherent bremsstrahlung and represent the first time such a probe has been employed at Jefferson Lab. Among the several new and upgraded Hall-B beamline devices commissioned prior to the production running of g8a were the photon tagger, the coherent bremsstrahlung facility (goniometer + an instrumented collimator), a photon profiler, and the PrimEx dipole + pair spectrometer telescopes. We essentially commissioned a new beam-line for photon running in Hall B. The scientific purpose of g8 is to improve the understanding of the underlying symmetry of the quark degrees of freedom in the nucleon, the nature of the parity exchange between the incident photon and the target nucleon, and the mechanism of associated strangeness production in electromagnetic reactions. With the high-quality beam of the tagged and collimated linearly-polarized photons arid the nearly complete angular coverage of the Hall-B spectrometer, we seek to extract the differential cross sections and polarization observables for the photoproduction of vector mesons and kaons at photon energies ranging between 1.1 and 2.25 GeV. For the first phase of g8, i.e. g8a, we collected approximately 1.8 billion triggers for 1.75 lte E_{vec-gamma} lte 2.25 GeV. In this paper, we report on the results of the commissioning of the beamline devices for the g8a run.
Download or read book Proceedings of the Sendai International Symposium written by Kazushige Maeda and published by World Scientific. This book was released on 2010 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Importance of strange quarks in hadrons, nuclei and dense matter / A.W. Thomas -- Overview of strangeness nuclear physics / A. Gal -- Experimental overview and challenge in strangeness nuclear physics / K. Imai -- Recent QCD results on the strange hadron systems / M. Oka -- Strangeness physics with CLAS / V.D. Burkert -- Progress and issues in the electromagnetic production of kaon on the nucleon / T. Mart -- Neutral kaon photoproduction at LNS, Tohoku University / M. Kaneta et al. for the NKS/NKS2 collaboration -- Photoproduction of the [symbol] resonance from the neutron / K.H. Hicks and D. Keller for the LEPS collaboration -- Photo- and electroproduction of kaons / P. Bydz̮ouský -- Strangeness pproduction at ELSA / V. Kleber for the CBELSA/TAB collaboration -- Low Q[symbol] kaon electroproduction / P. Markowitz and A. Acha for the JLab E94-107 and Hall A collaborations -- Results on strangeness production from HADES / A. Schmah for the HADES collaboration -- [symbol] photo-production on the deuteron at LNS, Tohoku University / T. Ishikawa -- Current status of the GO parity violation experiment carried out at Jefferson Laboratory / L. Bimbot for the GO collaboration -- Production and searches for cascade baryons with CLAS / E.S. Smith for the CLAS collaboration -- Nijmegen Baryon-Baryon interactions S = -1,-2 systems / Th. A. Rijken, M.M. Nagels and Y. Yamamoto -- Hyperon-nucleus systems in G-matrix approach / Y. Yamamoto -- [symbol]C(O[symbol]) and [symbol]O potentials derived from the SU[symbol] quark-model Baryon-Baryon interaction / Y. Fujiwara, M. Kohno and Y. Suzuki
Download or read book Chiral Dynamics written by Aron M. Bernstein and published by World Scientific. This book was released on 2001 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an authoritative, up to date, overview of the field of chiral dynamics, and also provides an excellent introduction to the field. The workshop is known for the interplay of theory and experiment and as a meeting place for most of the leading researchers in the field. Contents: Theoretical Chiral Dynamics (H Leutwyler); Experimental Chiral Dynamics (A Bernstein); CEBAF at Jefferson Lab, an Overview (B Mecking); Lorentz Invariant Baryon CHPT (T Becher); Sigma-Terms (J Gasser & M Sainio); Theory of Hadronic Atoms (A Rusetsky); Effective Field Theory in Nuclear Physics (M Savage); Nucleon Polarizabilities (B Holstein); Chiral Symmetry in Dense Hadronic Matter (W Weise); The GerasimovOCoDrellOCoHearn Sum Rule (D Drechsel); and other papers. Readership: Researchers, academics and graduate students in nuclear and high energy physics."
Download or read book 2000 IEEE Nuclear Science Symposium written by and published by . This book was released on 2001 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topics covered in this work include: semiconductor detectors; other solid state detectors; gaseous detectors; scintillates; photodetectors; novel detector technologies; neutron detection; read-out electronics and signal processing; control systems; and vertex detectors.
Download or read book Electromagnetic Interactions In Nuclear And Hadron Physics Proceedings Of The International Symposium written by Mamoru Fujiwara and published by World Scientific. This book was released on 2002-06-27 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the following topics: (1) meson and hadron production by real and virtual photon interaction with nucleons and nuclei; (2) astrophysical studies via photoreactions and hadron reactions; (3) new technologies for the electromagnetic probes and detector development; (4) nuclear structure studies with electromagnetic probes; (5) fundamental symmetries with electromagnetic probes and related problems.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)
Download or read book Baryons 2002 written by Carl Carlson and published by World Scientific. This book was released on 2003 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the latest developments in the area of three-quark systems. Emphasis is given to the discussion of new experimental results in the areas of form factors, unpolarized and polarized structure functions, and baryon structure and spectroscopy. Of particular interest are the new theoretical developments in the area of generalized parton distributions and lattice quantum chromodynamics.
Download or read book Experiments with a Tagged Photon Beam at Thomas Jefferson National Accelerator Facility written by Pascal Girard and published by . This book was released on 1999 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Baryons 2002 Proceedings Of The 9th International Conference On The Structure Of Baryons written by Bernhard Mecking and published by World Scientific. This book was released on 2003-05-28 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the latest developments in the area of three-quark systems. Emphasis is given to the discussion of new experimental results in the areas of form factors, unpolarized and polarized structure functions, and baryon structure and spectroscopy. Of particular interest are the new theoretical developments in the area of generalized parton distributions and lattice quantum chromodynamics.
Download or read book Nstar 2002 Proceedings Of The Workshop On The Physics Of Excited Nucleons written by Steven A Dytman and published by World Scientific. This book was released on 2003-07-07 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers recent advances in the physics of nucleon resonances, including new experimental results from laboratories in the USA, Europe, and Asia, and new developments in effective field theories, quark models, and lattice gauge theory.
Download or read book Pentaquark04 Proceedings Of The International Workshop written by Atsushi Hosaka and published by World Scientific. This book was released on 2005-05-06 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers collected in this book represent an exciting contribution to the growing body of experimental and theoretical research into exotic hadrons. The prime focus of the volume is the latest work on pentaquark baryons.The in-depth experimental reports cover both positive and negative evidence for the existence of various combinations of particles, and photo-electro production, hadronic production and high-energy processes are discussed in detail.Important theoretical areas of current interest are considered, including chiral solitons, constituent quarks, the QCD sum rule, lattice QCD, production reactions, and the determination of spin and parity. The volume features the work of two pioneering theorists, H Lipkin and D Diakonov, among the comprehensive coverage of the latest theoretical ideas in the field.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences
Download or read book Gdh 2002 Proceedings Of The Second International Symposium On The Gerasimov drell hearn Sum Rule And The Spin Structure Of The Nucleon written by Marco Anghinolfi and published by World Scientific. This book was released on 2003-06-13 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the GDH 2002 symposium. It is a review of the most recent results on the nucleon spin structure and related sum rules using real and virtual photons. The latest theoretical developments and the new high precision data from different laboratories are presented and discussed. The book provides a comprehensive picture of the nucleon spin studies from the perturbative domain down to the resonance and low momentum transfer region.
Download or read book A Polarized High Energy Photon Beam for Production of Exotic Mesons written by and published by . This book was released on 2012 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work describes design, prototyping and testing of various components of the Jefferson Lab Hall D photon beamline. These include coherent bremsstrahlung radiators to be used in this facility for generating the photon beam, a fine resolution hodoscope for the facility's tagging spectrometer, and a photon beam position sensor for stabilizing the beam on a collimator. The principal instrumentation project was the hodoscope: its design, implementation and beam testing will be thoroughly described. Studies of the coherent bremsstrahlung radiators involved X-ray characterization of diamond crystals to identify the appropriate line of manufactured radiators and the proper techniques for thinning them to the desired specification of the beamline. The photon beam position sensor project involved completion of a designed detector and its beam test. The results of these shorter studies will also be presented. The second part of this work discusses a Monte Carlo study of a possible photo-production and decay channel in the GlueX experiment that will be housed in the Hall D facility. Specifically, the [gamma] p → Xp → b1 [pi] → [omega] [pi]+1 [pi]-1 channel was studied including its Amplitude Analysis. This exercise attempted to generate a possible physics signal, complete with internal angular momentum states, and be able to reconstruct the signal in the detector and find the proper set of JPC quantum numbers through an amplitude fit. Derivation of the proper set of amplitudes in the helicity basis is described, followed by a discussion of the implementation, generation of the data sets, reconstruction techniques, the amplitude fit and results of this study.
Download or read book Few Body Problems in Physics 02 written by Rajmund Krivec and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Supplement we have collected the invited and contributed talks pre sented at the XVIII European Conference on Few-Body Problems in Physics, organised by the Jozef Stefan Institute and the University of Ljubljana, Slove nia. The Conference, sponsored by the European Physical Society, took place at the lakeside resort of Bled from 8 to 14 September, 2002. This meeting was a part of the series of European Few-Body Conferences, previously held in Evora/Portugal (2000), Autrans/France (1998), Peniscola/Spain (1995), ... Our aim was to emphasise, to a larger extent than at previous Conferences, the interdisciplinarity of research fields of the Few-Body community. To pro mote a richer exchange of ideas, we therefore strived to avoid parallel sessions as much as possible. On the other hand, to promote the participation of young scientists who we feel will eventually shape the future of Few-Body Physics, we wished to give almost all attendees the opportunity to speak.
Download or read book NSTAR 2005 written by Simon Capstick and published by World Scientific. This book was released on 2006 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together experts on the quark-gluon structure of matter as it applies to nucleon resonance physics. The contributions discuss the latest findings in areas such as meson production via electromagnetic and hadronic reactions, baryon resonance structure in chiral and lattice QCD approaches, and the extraction of resonance parameters from coupled-channels analysis of data. Contents: MAID Analysis Technique (L Tiator); Results from the GDH Experiment at Mainz and Bonn (A Braghieri); The Crystal Ball at MAMI (D Watts); Dynamically Generated Baryon Resonances (M Lutz); Progress Report for a New Karlsruhe-Helsinki Type Pion-Nucleon Partial Wave Analysis (S Watson); A Genetic Algorithm Analysis of N * Resonances (D G Ireland); Eta Photoproduction of the Neutron at GRAAL (V Kuznetsov); The Problem of Exotic States: View from Complex Angular Momenta (Ya Azimov); Excited Baryons in the 1/ N c Expansion (N Matagne); and other papers. Readership: Researchers in nuclear, high-energy and particle physics.
Download or read book Photodisintegration of 4 He Into P t written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-body photodisintegration of $^4$He into a proton and a triton has been studied using the CEBAF Large-Acceptance Spectrometer (CLAS) at Jefferson Laboratory. Real photons produced with the Hall-B bremsstrahlung-tagging system in the energy range from 0.35 to 1.55 GeV were incident on a liquid $^4$He target. This is the first measurement of the photodisintegration of $^4$He above 0.4 GeV. The differential cross sections for the $\gamma$$^4$He$\to pt$ reaction have been measured as a function of photon-beam energy and proton-scattering angle, and are compared with the latest model calculations by J.-M. Laget. At 0.6-1.2 GeV, our data are in good agreement only with the calculations that include three-body mechanisms, thus confirming their importance. These results reinforce the conclusion of our previous study of the three-body breakup of $^3$He that demonstrated the great importance of three-body mechanisms in the energy region 0.5-0.8 GeV.
Download or read book NSTAR 2002 written by Eric Scott Swanson and published by World Scientific. This book was released on 2003 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers recent advances in the physics of nucleon resonances, including new experimental results from laboratories in the USA, Europe, and Asia, and new developments in effective field theories, quark models, and lattice gauge theory.
