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Proposal to the Department of Energy for participation in the UA1 experiment

Description: This proposal is to the Department of Energy for 501.6K dollars (349.6K operations and 152K equipment) for continued participation in the UA1 experiment on proton-antiproton collisions. The UA1 experiment is the study of high-energy proton-antiproton collisions in the Super-Proton-synchrotron (SPS) Collider at CERN. A major upgrade of the UA1 detector is in progress for operation with the upgraded antiproton source (ACOL). The US groups have played an increasingly prominent role in UA1 during t… more
Date: February 1, 1988
Creator: Rohlf, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ideas for a long-baseline neutrino detector

Description: The Atmospheric Neutrino Deficit defines a region in {Delta}m{sup 2}-sin{sup 2}2{theta} space which ought to be conclusively tested in a long-baseline experiment. This talk sets out a region to cover (which may change as more data is analyzed) and translates that region into an L/E. I present exclusion curves for different experiments based on their distance and their precision; I conclude that an experiment which can detect oscillations down to 1% located at 1200 km will cleanly test the allow… more
Date: February 1, 1992
Creator: Bernstein, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Low energy p p physics

Description: A detailed investigation of proton-antiproton interactions at low energy has become feasible with the commissioning of the LEAR facility in 1983. We shall shortly review the status of {bar p}p annihilation at rest and the physics motivations for second generation experiments with the Crystal Barrel detector. This type of detector would be adequate for the study of both Kp and {bar p}p interactions on an extracted beam of the KAON Factory. We shall conclude with a few remarks on the physics oppo… more
Date: February 1, 1989
Creator: Amsler, C.; Crowe, K. (Zurich Univ. (Switzerland). Inst. fuer Physik & Lawrence Berkeley Lab., CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High Energy Physics Division semiannual report of research activities, July 1, 1990--December 31, 1990

Description: A report is presented of research and development activities conducted in the High Energy Physics Division at Argonne National Laboratory during the six month period July 1 through December 31, 1990. Analyses of data from experiments performed by members of the Division are summarized, and the status of experiments taking data and of those being prepared is reviewed. Descriptions are included of research on theoretical and phenomenological topics in particle physics. Progress reports are provid… more
Date: February 1, 1991
Creator: Berger, E.; Moonier, P.; May, E. & Norem, J. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A large superconducting detector magnet without an iron return path

Description: This paper describes a detector magnet which returns flux between the coils rather than through an iron return path. This actively shielded, uniform field 2 T magnet can be fabricated in separate parts which can be manufactured on the SSC site. This magnet can be built so that central field is uniform enough to permit a TPC detector to be used without iron poles. The field outside of the coil can be made to fall of as R/sup /minus/N/ power where N approaches 9. A major advantage of the magnet d… more
Date: February 1, 1989
Creator: Green, Michael A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiation damage of tile/fiber scintillator modules for the SDC calorimeter

Description: The measurements of radiation damage of tile/fiber scintillator modules to be used for the SDC calorimeter are described. Four tile/fiber scintillator modules were irradiated up to 6 Mrad with the BEPC 1.1 GeV electron beam. We have studied the light output at different depths in the modules and at different integrated doses, the recovery process and the dependence on the ambient atmosphere.
Date: February 1, 1992
Creator: Hu, L.; Liu, N.; Mao, H.; Tan, Y.; Wang, G.; Zhang, C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Decays of the tau lepton

Description: Previous measurements of the branching fractions of the tau lepton result in a discrepancy between the inclusive branching fraction and the sum of the exclusive branching fractions to final states containing one charged particle. The sum of the exclusive branching fractions is significantly smaller than the inclusive branching fraction. In this analysis, the branching fractions for all the major decay modes are measured simultaneously with the sum of the branching fractions constrained to be on… more
Date: February 1, 1986
Creator: Burchat, P. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Detector problems at the SSC

Description: During the last couple of years there has been considerable concern expressed among the US high energy community as to whether detector limitations would prevent one from being able to fully exploit a luminosity of 10/sup 33/ cm/sup -2/ sec/sup -1/ at a hadron-hadron high energy collider. As a result of these concerns, a considerable amount of work has been done recently in trying to understand the nature of potential difficulties and the required R and D that needs to be performed. A lot of th… more
Date: February 1, 1985
Creator: Wojcicki, S.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Resonance production in two-photon interactions

Description: Resonance production in two-photon interactions is studied using data collected with the ASP detector at the PEP e/sup +/e/sup /minus// storage ring located at the Stanford Linear Accelerator Center. The ASP detector is a non-magnetic lead-glass calorimeter constructed from 632 lead-glass bars. It covers 94% of 4..pi.. in solid angle, extending to within 20/degree/ of the beamline. Lead-scintillator calorimeters extend the coverage to within 21 mr of the beamline on both sides. Energy resolutio… more
Date: February 1, 1989
Creator: Roe, N.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The future of tau physics and tau-charm detector and factory design

Description: Future research on the tau lepton requires large statistics, thorough investigation of systematic errors, and direct experimental knowledge of backgrounds. Only a tau-charm factory with a specially designed detector can provide all the experimental conditions to meet these requirements. This paper is a summary of three lectures delivered at the 1991 Lake Louise Winter Institute.
Date: February 1, 1991
Creator: Perl, Martin L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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D0 data management

Description: The management of data in programs for the D0 detector at the FNAL Tevatron collider is described with particular emphasis on aspects relevant to event reconstruction and data analysis. 3 figs.
Date: February 4, 1991
Creator: Protopopescu, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Physics at e sup + e sup minus factories

Description: Feasible designs are well advanced for high-luminosity e{sup +}e{sup {minus}} storage rings which produce B{sup 0}{bar B}{sup 0} pairs either at rest or, in what appears to be a more promising option, boosted in the detector frame. Facilities which could provide samples of 30--100 fb{sup {minus}1} per year on the {Upsilon}(4S) will be proposed in early 1991. Here we examine the principal physics goal of such B Factories, namely CP violation in the b system. Methods in a variety of channels, est… more
Date: February 1, 1991
Creator: Lueth, V. (Stanford Linear Accelerator Center, Menlo Park, CA (USA)) & MacFarlane, D.B. (McGill Univ., Montreal, PQ (Canada))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Study of the radiative decay J/psi. -->. gamma. eta. pi. /sup +/. pi. /sup -/

Description: The Mark III collaboration has performed a high statistics study of the reaction J/psi ..-->.. ..gamma..eta..pi../sup +/..pi../sup -/, with two different final states of the eta, eta ..-->.. ..gamma gamma.. and eta ..-->.. ..pi../sup 0/..pi../sup +/..pi../sup -/. Both modes have a broad structure from 1.2 to 1.9 GeV/c/sup 2/ and two structures, which decay via delta/sup + -/..pi../sup - +/, delta/sup + -/ ..-->.. eta..pi../sup + -/, are identified at 1.28 and 1.39 GeV/c/sup 2/. No signal is obs… more
Date: February 1, 1987
Creator: Becker, J. J.; Blaylock, G. T.; Bolton, T.; Brown, J. S.; Bunnell, K. O.; Burnett, T. H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The magnetic design and field measurement of Fermilab collider detectors: CDF (the Collider Detector at Fermilab) and D0

Description: General magnetic characteristics of the CDF and D0 hadron collider detectors at Fermilab are described. The method and equipment for the field measurement for both detectors are described, and their field measurement data are presented. The magnetic field distribution inside the CDF solenoid magnet was measured extensively only at the boundaries, and the field values inside the volume were reconstructed. The effects due to the joints and the return conductor were measured and are discussed. The… more
Date: February 1, 1990
Creator: Yamada, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Monolithic preamplifier employing epitaxial N-channel JFETs

Description: This paper reports the results obtained in the research program oriented to the realisation of a monolithic preamplifier for calorimetry applications at high luminosity colliders. The main purpose of the program is to arrive at a monolithic realisation with a performance as close as possible to that of discrete preamplifiers. The junction field-effect transistors employed in discrete preamplifiers have an epitaxial channel and a very heavily doped gate diffused onto it. They present the best no… more
Date: February 1, 1992
Creator: Radeka, V.; Rescia, S. (Brookhaven National Lab., Upton, NY (United States)); Manfredi, P.F.; Re, V. & Speziali, V. (Pavia Univ. (Italy). Dipt. di Elettronica Istituto Nazionale di Fisica Nucleare, Milan (Italy))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design of a lead-glass drift calorimeter with MWPC detection

Description: A drift collection calorimeter having a combined radiator and field-shaping structure made of lead-glass tubing is described. A high-resistance metallic layer is formed by reduction of the lead oxide at the surface of the glass and forms a continuous voltage divider for drift-field shaping. The energy resolution of such a calorimeter is modeled, for several configurations, by the Monte Carlo technique.
Date: February 1, 1983
Creator: Perez-Mendez, V.; del Guerra, A.; Mulera, T.; Hirayama, H. & Nelson, W. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Modular TPC's for relativistic heavy ion experiments

Description: We have developed a TPC system for use in relativistic heavy ion experiments that permits the efficient reconstruction of high multiplicity events including events with decay vertices. It operates with the beam through the middle of the chamber giving good efficiency, two-track separation and spatial resolution. The three-dimensional points in this system allow the reconstruction of the complex events of interest. The use of specially developed hybrid electronics allows us to build a compact an… more
Date: February 10, 1989
Creator: Etkin, A.; Eiseman, S. E.; Foley, K. J.; Hackenburg, R. W.; Longacre, R. S.; Love, W. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tests of QED (Quantum Electrodynamics) to fourth order in alpha in electron-positron collisions at 29 GeV

Description: Tests of Quantum Electrodynamics to order /alpha//sup 4/ in e/sup +/e/sup /minus// collisions using the ASP detector at PEP (/radical/s = 29 GeV) are presented. Measurements are made of e/sup +/e/sup /minus// /yields/ /gamma//gamma//gamma//gamma/, e/sup +/e/sup /minus// /yields/ e/sup +/e/sup /minus///gamma//gamma/ and e/sup +/e/sup /minus// /yields/ e/sup +/e/sup /minus//e/sup +/e/sup /minus// where all four final state particles are separated from the beam line and each other. These are the m… more
Date: February 1, 1989
Creator: Hawkins, C.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Longitudinal information and radiation damage in EM calorimetry

Description: The SCC radiation field is higher than that encountered by previous hadron collider detectors. In particular, the electromagnetic (EM) calorimeter compartment sees the highest radiation dose. Since an EM calorimeter also makes the most precise energy measurement, special care must be lavished on this part of a calorimeter. Previous studies have concentrated on Monte Carlo examinations of 2 longitudinal compartments within the EM which can alleviate radiation damage. Recently, it was realized th… more
Date: February 5, 1993
Creator: Green, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Z + {gamma} cross-section measurement, {sigma}*BR(Z + {gamma}), in the electron channel for p{bar p} collisions at {radical}s = 1.8 TeV, and limits for the ZZ{gamma} and Z{gamma}{gamma} anomalous couplings

Description: The Z + {gamma} cross-section x branching ratio in the electron channel has been measured using the inclusive Z data sample from the CDF 1988--1989 collider run, for which the total integrated luminosity was 4.05 {plus_minus} 0.28 pb{sup {minus}1}. Two Z{gamma} candidates are observed from central photon events with {Delta}R/{sub {gamma}} > 0.7 and E{sub t}{sup {gamma}} > 5.0 GeV. From these events the {sigma} * BR(Z + {gamma}) is measured and compared with SM predictions: {sigma} * BR(Z + {gam… more
Date: February 1, 1994
Creator: Roach-Bellino, M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

A tau -- charm -- factory at Argonne. Preliminary assessment of the physics case and the Argonne Site

Description: Depending on the beam energy setting, the {tau} -- charm -- factory will be optimized to study physics with {tau} leptons, with charmed mesons, or with charmonium states. This report gives a short overview of the physics of these topics. Also discussed are the detectors and the costs associated with this project.
Date: February 2, 1994
Creator: Berger, E.; Fields, T.; Grosnick, D.; Norem, J.; Repond, J. & Schoessow, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PHENIX WBS notes. Cost and schedule review copy

Description: The Work Breakdown Structure (WBS) Book begins with this Overview section, which contains the high-level summary cost estimate, the cost profile, and the global construction schedule. The summary cost estimate shows the total US cost and the cost in terms of PHENIX construction funds for building the PHENIX detector. All costs in the WBS book are shown in FY 1993 dollars. Also shown are the institutional and foreign contributions, the level of pre-operations funding, and the cost of deferred it… more
Date: February 1, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ideas for a long-baseline neutrino detector

Description: The Atmospheric Neutrino Deficit defines a region in {Delta}m{sup 2}-sin{sup 2}2{theta} space which ought to be conclusively tested in a long-baseline experiment. This talk sets out a region to cover (which may change as more data is analyzed) and translates that region into an L/E. I present exclusion curves for different experiments based on their distance and their precision; I conclude that an experiment which can detect oscillations down to 1% located at 1200 km will cleanly test the allow… more
Date: February 1, 1992
Creator: Bernstein, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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