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Brookhaven highlights for fiscal year 1991, October 1, 1990--September 30, 1991

Description: This report highlights Brookhaven National Laboratory's activities for fiscal year 1991. Topics from the four research divisions: Computing and Communications, Instrumentation, Reactors, and Safety and Environmental Protection are presented. The research programs at Brookhaven are diverse, as is reflected by the nine different scientific departments: Accelerator Development, Alternating Gradient Synchrotron, Applied Science, Biology, Chemistry, Medical, National Synchrotron Light Source, Nuclea… more
Date: January 1, 1991
Creator: Rowe, M.S.; Cohen, A.; Greenberg, D.; Seubert, L. & Kuper, J.B.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Relativistic heavy ion physics

Description: In 1992 a proposal by the Iowa State University experimental nuclear physics group entitled Relativistic Heavy Ion Physics'' was funded by the US Department of Energy, Office of Energy Research, for a three-year period beginning November 15, 1991. This is a progress report for the first six months of that period but, in order to give a wider perspective, we report here on progress made since the beginning of calendar year 1991. In the first section, entitled Purpose and Trends,'' we give some b… more
Date: January 1, 1992
Creator: Hill, J. C. & Wohn, F. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The relativistic heavy ion collider project: An overview

Description: We have now seen the first results from experiments with high energy nuclear beams at Brookhaven and CERN. These experiments, which began about a year ago, use fixed targets at the AGS and SPS. These programs have begun with relatively light ions (A less than or equal to 32 amu) to explore states of compressed nuclear matter in which high energy density is achieved in an environment of high baryon density at energies near the maximum for nuclear stopping. The widespread interest and excitement … more
Date: January 1, 1987
Creator: Ludlam, T. W. & Samios, N. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Revised cross section for RHIC dipole magnets

Description: Using the experience gained in designing and building Relativistic Heavy Ion Collider (RHIC) dipole prototype magnets an improved cross section has been developed. Significant features of this design include the use of only three wedges for field shaping and wedge cross sections which are sectors of an annulus. To aid in the understanding of the actual magnets, one has been sectioned, and detailed mechanical and photographic measurements made of the wire positions. The comparison of these measu… more
Date: January 1, 1991
Creator: Thompson, P. A.; Gupta, R. C.; Kahn, S. A.; Hahn, H.; Morgan, G. H.; Wanderer, P. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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BNL accelerator plans

Description: The Brookhaven National Laboratory plan for high energy and heavy ion physics accelerator use for the next ten-year period is described. The two major initiatives are in the construction of the Relativistic Heavy Ion Collider and the upgrade of the Alternating Gradient Synchrotron to a ''Mini Kaon Factory''.
Date: January 1, 1986
Creator: Lowenstein, D.I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experiments with high energy nuclear beams at Brookhaven: From AGS to RHIC (Relativistic Heavy Ion Collider)

Description: We have now seen the first results from experiments with high energy nuclear beams at Brookhaven and CERN. These experiments, which began about a year ago, use fixed targets at the AGS and SPS. These programs have begun with relatively light ions (A less than or equal to 32 amu) to explore states of compressed nuclear matter in which high energy density is achieved in an environment of high baryon density at energies near the maximum for nuclear stopping. The widespread interest and excitement … more
Date: January 1, 1987
Creator: Ludlam, T.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Status of magnet system for RHIC

Description: A Relativistic Heavy Ion Colliding beam accelerator (RHIC) has been proposed at Brookhaven National Laboratory. The machine would generate colliding beams of energies up to 100 GeV/amu of ions as heavy as /sup 197/Au. The facilities necessary to accelerate these ions up to 11 GeV/amu are either already operational or under construction at BNL. This paper will discuss the magnet system for the actual collider ring itself, which will further accelerate the particles to beam energies of between 7 … more
Date: January 1, 1986
Creator: Thompson, P.A.; Cottingham, J.; Dahl, P.; Fernow, R.; Garber, M.; Ghosh, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Two-photon physics and the coming generation of heavy ion colliders

Description: The possibilities for two-photon physics at the coming generation of heavy ion colliders is discussed. Particular attention is given to both e{sup +}, e{sup {minus}} production and resonance production of the Higgs particle. For e{sup +},e{sup {minus}} production the inadequacy of traditional perturbation theory is outlined, and through of the introduction of approximations valid for heavy ions it is shown how to sum a class of non-perturbative diagrams. The role of the nuclear form factor in s… more
Date: January 1, 1992
Creator: Rhoades-Brown, M.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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(Pion interferometry search for a phase change in hadronic matter in relativistic heavy ion collisions and its application to RHIC: Progress report)

Description: The purpose of this research is to assist in the investigation of the behavior of hadronic matter under extreme conditions. Specifically, this project intends to actively involve Creighton students and faculty in the search for indications of a phase transition from hadronic to quark matter. It is believed that the conditions necessary for the formation of this quark-gluon plasma include large energy densities over extended volumes. The technique of boson interferometry may prove to be the effe… more
Date: January 1, 1992
Creator: Cherney, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SDRC I-DEAS and RHIC (Relativistic Heavy Ion Collider)

Description: In August 1984, Brookhaven National Laboratory submitted a proposal to the Department of Energy (DOE) for the construction of a Relativistic Heavy Ion Collider (RHIC). Since then funding has continued for the detailed design of RHIC. The hardware for RHIC consists of two concentric rings of superconducting magnets in a 2.4 mile circumference with six intersections. Bunches of ions will travel in opposite directions in each of the two rings and eventually collide head on at one of the six inters… more
Date: January 1, 1989
Creator: Goggin, C.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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RHIC Project

Description: With funding in place and governmental approval to begin the detailed design, as well as to proceed with the procurement of long lead-time items, the RHIC Project is now a bona fide construction project at Brookhaven National Laboratory. This paper will present an overview of the RHIC accelerator configuration, the collider design, and the present status of the Project. 1 ref., 4 figs., 1 tab.
Date: January 1, 1991
Creator: Ozaki, Satoshi.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High energy heavy ion collisions and the RHIC (Relativistic Heavy Ion Collider) project at Brookhaven

Description: The most spectacular of the new high energy approaches to nuclear physics is the field of relativistic heavy ion collisions, for which it is anticipated that construction of the Relativistic Heavy Ion Collider (RHIC) facility will begin soon. Here the goal is to subject large volumes of nuclear matter to such extreme conditions of temperature and pressure that a new form of matter is produced in which the recognizable components are not the familiar neutrons and protons, but are quarks. This pa… more
Date: January 1, 1989
Creator: Ludlam, T.W. (Brookhaven National Lab., Upton, NY (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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First turn around strategy for RHIC

Description: We present a strategy for achieving the so-called first turn around in RHIC. The strategy is based on the same method proposed to correct a distorted closed orbit in RHIC, i.e., on a generalization of the local three-bump method. We found out that the method is very effective in passing the beam through a non-ideal, insufficiently known, machine. The perturbed lattice was generated by the code PATRIS, which was also adapted to control the newly developed software. In ten distributions of errors… more
Date: January 1, 1991
Creator: Milutinovic, J. & Ruggiero, A. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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RHIC project

Description: With the funding for construction in place starting in 1991, the RHIC project is making great strides towards the collider's completion and the beginning of ultra-relativistic heavy ion collision physics in 1997. An overview of the Project, the current status of the accelerator design and construction, and the steps being taken for the physics program formulation will be presented. 1 ref., 3 figs., 1 tab.
Date: January 1, 1991
Creator: Ozaki, Satoshi.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The PHENIX experiment at RHIC

Description: We review the current status of the design of a major RHIC detector which focuses primarily on the detection of dilepton pairs, direct photons, and selected hadron signals. The physics motivation and goals, the present conceptual design, and various technical issues are presented and discussed. The plan for continuing the design work over the next year is outlined.
Date: January 1, 1992
Creator: Aronson, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analytic closed orbit analysis for RHIC insertion

Description: Analytic closed orbit analysis is performed to evaluate the tolerance of quadrupole misalignment and dipole errors (b{sub 0},a{sub 0}) in the RHIC insertion. Sensitivity coefficients of these errors are tabulated for different {beta}{sup 0} values. Using these sensitivity tables, we found that the power supplies ripple of 10{sup {minus}4} can cause closed orbit motion of 0.05 mm at the IP in comparison with the rms beam size of 0.3 mm. It is desirable to have the power supply ripple less than 1… more
Date: January 1, 1991
Creator: Lee, S.Y. (Indiana Univ., Bloomington, IN (USA). Dept. of Physics) & Tepikian, S. (Brookhaven National Lab., Upton, NY (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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RHIC insertion magnets

Description: The Relativistic Heavy Ion Collider (RHIC) under construction at Brookhaven National Laboratory (BNL) has six interaction regions for the colliding beam. Each interaction region is part of an insertion region consisting of several magnets. The required aperture of some of the quadrupoles and dipoles in the insertion regions is much larger than the nominal 80 mm aperture of the other magnets in the accelerator. There will be 82 quadrupole magnets having an aperture of 130 mm and a maximum operat… more
Date: January 1, 1991
Creator: Gupta, R.C.; Cottingham, J.; Ganetis, G.; Garber, M.; Ghosh, A.; Greene, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Beta functions in the presence of linear coupling

Description: One effect of random skew quadrupole field errors is to perturb the {beta}-functions. This effect may be large in proton accelerators using superconducting magnets, because of the relatively large random skew quadrupole field errors that are expected in these magnets. The effect is also increased by the required insertions in proton colliders which generate large {beta}-functions in the insertion region. This effect has been studied in the RHIC accelerator (the Relativistic Heavy Ion Collider p… more
Date: January 1, 1991
Creator: Parzen, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Physics and experiments at RHIC

Description: This report discusses some of the experiments that will be held at the Brookhaven RHIC. The detectors that will be used at Brookhaven RHIC are also discussed. The main purpose in building this accelerator is to produce and detect the so-called Quark-Gluon plasma. Purposes are emphasized in this paper. 12 refs., 7 figs. (LSP)
Date: January 1, 1991
Creator: Young, G. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Longitudinal Stability Calculations

Description: Coupled bunch longitudinal stability in the presence of high frequency impedances is considered. A frequency domain technique is developed and compared with simulations. The frequency domain technique allows for absolute stability tests and is applied to the problem of longitudinal stability in RHIC with the new 56 MHz RF system.
Date: January 2, 2009
Creator: Blaskiewicz, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multipacting Simulation Study for 56 MHz Quarter Wave Resonator using 2D Code

Description: A beam excited 56 MHz Radio Frequency (RF) Niobium Quarter Wave Resonator (QWR) has been proposed to enhance RHIC beam luminosity and bunching. Being a RF cavity, multipacting is expected; therefore an extensive study was carried out with the Multipac 2.1 2D simulation code. The study revealed that multipacting occurs in various bands up to peak surface electric field 50 kV/m and is concentrated mostly above the beam gap and on the outer conductor. To suppress multipacting, a ripple structure w… more
Date: January 2, 2009
Creator: Naik, D. & Ben-Zvi, Ilan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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