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A Threshold Gas Cerenkov Detector For The Spin Asymmetries Of The Nucleon Experiment
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Book Synopsis A Threshold Gas Cerenkov Detector for the Spin Asymmetries of the Nucleon Experiment by :
Download or read book A Threshold Gas Cerenkov Detector for the Spin Asymmetries of the Nucleon Experiment written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on the design, construction, commissioning, and performance of a threshold gas Cerenkov counter in an open configuration, which operates in a high luminosity environment and produces a high photo-electron yield. Part of a unique open geometry detector package known as the Big Electron Telescope Array, this Cerenkov counter served to identify scattered electrons and reject produced pions in an inclusive scattering experiment known as the Spin Asymmetries of the Nucleon Experiment E07-003 at the Thomas Jefferson National Accelerator Facility (TJNAF) also known as Jefferson Lab. The experiment consisted of a measurement of double spin asymmetries A.
Book Synopsis Internal Spin Structure Of The Nucleon - Proceedings Of The Symposium by : Vernon W Hughes
Download or read book Internal Spin Structure Of The Nucleon - Proceedings Of The Symposium written by Vernon W Hughes and published by World Scientific. This book was released on 1995-07-14 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topic of the internal spin structure of the nucleon has become an unusually active subfield of particle and nuclear physics, together with the relevant technologies. This volume presents up-to-date coverage.All the talks given at the symposium can be found in the volume. In addition, selected articles are reprinted, including two early papers which record initial thinking about the topic, all experimental papers giving data on nucleon spin structure functions determined from polarized lepton-nucleon scattering, and two valuable previously unpublished papers.
Book Synopsis The Spin Structure Of The Nucleon by : Bernard Frois
Download or read book The Spin Structure Of The Nucleon written by Bernard Frois and published by World Scientific. This book was released on 1998-02-24 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: From its early beginnings at SLAC in the 1970's, the study of nucleon spin structure using polarized lepton beams and polarized nucleon targets has become increasingly important in nuclear and particle physics, with current experiments at several of the world's high energy and nuclear physics laboratories (CERN, DESY, SLAC and Jefferson Lab) and with enormous related theoretical studies. The understanding of the fascinating but complicated problem of nucleon spin structure has progressed substantially, but fundamental questions remain and it can be confidently predicted that future activity will be high.The Erice Course on The Spin Structure of the Nucleon covered both the experimental and theoretical aspects of the subject, and this volume includes the lectures given at the School. In many cases the lecture material has been extended and updated by the authors. In addition, several recent publications on experimental work have been added in an appendix.
Book Synopsis Development of a Threshold Gas Cerenkov Detector to Detect 16 MEV Gamma Rays by : Ralph Posey (Jr.)
Download or read book Development of a Threshold Gas Cerenkov Detector to Detect 16 MEV Gamma Rays written by Ralph Posey (Jr.) and published by . This book was released on 1990 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics Division Annual Report by : Argonne National Laboratory. Physics Division
Download or read book Physics Division Annual Report written by Argonne National Laboratory. Physics Division and published by . This book was released on 1996 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Gas Cerenkov Threshold Detector to Measure the Peak Energy of the Bremsstrahlung Beam of the M.I.T. Synchrotron by : Robert Murano
Download or read book A Gas Cerenkov Threshold Detector to Measure the Peak Energy of the Bremsstrahlung Beam of the M.I.T. Synchrotron written by Robert Murano and published by . This book was released on 1960 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Longitudinal Double-Spin Asymmetry of Electrons from Heavy Flavor Decays in Polarized p + p Collisions at √s = 200 GeV by : Katsuro Nakamura
Download or read book Longitudinal Double-Spin Asymmetry of Electrons from Heavy Flavor Decays in Polarized p + p Collisions at √s = 200 GeV written by Katsuro Nakamura and published by Springer. This book was released on 2014-05-21 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the measurement of double-spin asymmetry for electron production from heavy flavor decays was performed in a Relativistic Heavy Ion Collider (RHIC) in the PHENIX experiment at Brookhaven National Laboratory to measure the polarized parton distribution function of gluon in the small Bjorken x region (x~0.01). For this experiment, for the first time a Hadron Blind Detector (HBD), which is a position-sensitive gas Cherenkov counter with Gas Electron Multiplier whose surface is evaporated by CsI, was employed. This HBD contributes to reducing the background from electron pairs produced by real and virtual photon conversion. Furthermore, the author develops a new analysis method for the background reduction, and the signal-to-background ratio is improved by a factor of roughly 2.0. Using the combination of the HBD and a new analysis method, the double-spin asymmetry of the electron production with transverse momentum ranging 0.5 pT 3.0 GeV/c is measured and confirmed to be zero-consistent within the limit of the statistical uncertainty of about 1%. This result identifies the constraint of the gluon polarization in the small Bjorken
Book Synopsis Design, Testing of a Prototype Heavy Gas Ring-imaging Cherenkov (GRINCH) Detector by : Christine McLean
Download or read book Design, Testing of a Prototype Heavy Gas Ring-imaging Cherenkov (GRINCH) Detector written by Christine McLean and published by . This book was released on 2012 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Jefferson Lab experiment E12-06-122 is an ongoing experiment that measures the contribution of quarks to neutron spin. An important part of this experiment is the Cherenkov detector, used to detect electrons scattered off a polarized 3He target. Cherenkov detectors make use of the phenomenon of Cherenkov light, produced when a particle moves faster than the speed of light in the medium through which it travels, to identify particles by velocity. The previous experiment used a Cherenkov detector that did not operate well in the high rate environment in which it operated. The purpose of this experiment is to design and test a prototype for a new Cherenkov detector that will work well in a high rate environment. This report gives an account of the design, setup, and early data analysis of this prototype detector.
Download or read book Baryons ... written by and published by . This book was released on 1992 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis THE GASEOUS CERENKOV THRESHOLD GAMMA-RAY DETECTOR AS A REACTOR POWER MONITOR by : JOSEPH ROGER HUMPHRIES
Download or read book THE GASEOUS CERENKOV THRESHOLD GAMMA-RAY DETECTOR AS A REACTOR POWER MONITOR written by JOSEPH ROGER HUMPHRIES and published by . This book was released on 1972 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sum Rule Measurements of the Spin-dependent Compton Amplitude (nucleon Spin Structure at Q[sup 2] by :
Download or read book Sum Rule Measurements of the Spin-dependent Compton Amplitude (nucleon Spin Structure at Q[sup 2] written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy weighted integrals of the difference in helicity-dependent photo-production cross sections ([sigma][sub [1/2]] - [sigma][sub 3/2]) provide information on the nucleon's Spin-dependent Polarizability ([gamma]), and on the spin-dependent part of the asymptotic forward Compton amplitude through the Drell-Hearn-Gerasimov (DHG) sum rule. (The latter forms the Q[sup 2]=0 limit of recent spin-asymmetry experiments in deep-inelastic lepton-scattering.) There are no direct measurements of [sigma][sub [1/2]] or [sigma][sub 3/2], for either the proton or the neutron. Estimates from current [pi]-photo-production multipole analyses, particularly for the proton-neutron difference, are in good agreement with relativistic-l-loop Chiral calculations ([chi]PT) for [gamma] but predict large deviations from the DHG sum rule. Either (a) both the 2-loop corrections to the Spin-Polarizability are large and the existing multipoles are wrong, or (b) modifications to the Drell-Hearn-Gerasimov sum rule are required to fully describe the isospin structure of the nucleon. The helicity-dependent photo-reaction amplitudes, for both the proton and the neutron, will be measured at LEGS from pion-threshold to 470 MeV. In these double-polarization experiments, circularly polarized photons from LEGS will be used with SPHICE, a new frozen-spin target consisting of [rvec H] [center-dot] [rvec D] in the solid phase. Reaction channels will be identified in SASY, a large detector array covering about 80% of 4[pi]. A high degree of symmetry in both target and detector will be used to minimize systematic uncertainties.
Book Synopsis Gas Cerenkov Detector for Measuring 16. 7-MeV Gamma Rays from the D(T, . Gamma.)5He Reaction by :
Download or read book Gas Cerenkov Detector for Measuring 16. 7-MeV Gamma Rays from the D(T, . Gamma.)5He Reaction written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A gas Cerenkov detector has been developed for measuring radiation from the 16.7-MeV gamma branch of the D-T reaction. This has useful applications as a diagnostic tool for weapons tests at the Nevada Test Site (NTS), as well as for evaluation of ICF targets and Tokomak plasmas. The Cerenkov process was chosen because of excellent time response. A gas radiator allows threshold control to eliminate low-energy background, such as gamma radiation produced by a neutron capture or scattering. The detector consists of a thin aluminum converter to provide energetic pair and Compton electrons, a deflecting magnet, a Cerenkov radiator, and an optical system for collection and detection of Cerenkov light. The radiator is a gas chamber filled with approximately one atmosphere of carbon dioxide. A photodiode is used for light detection. The electron beam from the DOE/EG and G electron linear accelerator at EG and G's Santa Barbara Operations has been used to measure the detector response as functions of electron energy and gas pressure. A Monte Carlo production-transport code is used to calculate geometrical properties of the pair and Compton electron distributions as they enter the Cerenkov radiator. Fluorescence, transition radiation, and other optical backgrounds produced by subthreshold electrons are being evaluated in order to optimize the detector design.
Download or read book High Energy Physics Index written by and published by . This book was released on 1990 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Particle Detectors by : Hermann Kolanoski
Download or read book Particle Detectors written by Hermann Kolanoski and published by Oxford University Press. This book was released on 2020-06-30 with total page 949 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the fundamentals of particle detectors as well as their applications. Detector development is an important part of nuclear, particle and astroparticle physics, and through its applications in radiation imaging, it paves the way for advancements in the biomedical and materials sciences. Knowledge in detector physics is one of the required skills of an experimental physicist in these fields. The breadth of knowledge required for detector development comprises many areas of physics and technology, starting from interactions of particles with matter, gas- and solid-state physics, over charge transport and signal development, to elements of microelectronics. The book's aim is to describe the fundamentals of detectors and their different variants and implementations as clearly as possible and as deeply as needed for a thorough understanding. While this comprehensive opus contains all the materials taught in experimental particle physics lectures or modules addressing detector physics at the Master's level, it also goes well beyond these basic requirements. This is an essential text for students who want to deepen their knowledge in this field. It is also a highly useful guide for lecturers and scientists looking for a starting point for detector development work.
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 998 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spin Structure at Long Distance by : Jian-Ping Chen
Download or read book Spin Structure at Long Distance written by Jian-Ping Chen and published by AIP Conference Proceedings (Nu. This book was released on 2009-08-04 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical developments -- Experimental developments -- Future experiments and active analyses.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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