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Your search keyword '"R. L. McGrath"' showing total 3 results
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3 results on '"R. L. McGrath"'

1. The Bombarding Energy Dependence of π- Inteferometry at the Ags

Author

Xiaodong Yang, A. S. Hirsch, J. L. Romero, G. Rai, J. L. Chance, D. Cebra, I. Chemakin, J. Klay, D. Best, B. Caskey, K.M. Crowe, N. T. B. Stone, E. LeBras, R. Witt, David Krofcheck, P. Brady, S. Gushue, Y. M. Liu, T. Case, R. Wells, D. L. Olson, R. Soltz, Yanxi Zhang, C. Pinkenburg, D. Keane, P. Chung, L. S. Schroeder, V. Cianciolo, S. Wang, M. A. Lisa, L. Wood, N. N. Ajitanand, S. Y. Panitkin, J. E. Draper, R. Scharenburg, M. Justice, N. T. Porile, M. Heffner, B. K. Srivastava, Brian Cole, R. L. McGrath, T. J. M. Symons, H. Hiejima, J. C. Kintner, A. C. Das, H. Liu, Roy A. Lacey, J. Whitfield, T. Wienold, Morton Kaplan, James Alexander, H. G. Ritter, J. Lauret, M. Gilkes, E. L. Hjort, Lei Huo, and W. M. Zhang

Subjects
Excitation function, Nuclear physics, Physics, Correlation function (statistical mechanics), Time projection chamber, Reaction dynamics, Nuclear Theory, Plasma, Sensitivity (control systems), Nuclear Experiment, Energy (signal processing), Intensity (physics)
Abstract

We present a preliminary excitation function of π - intensity inteferometry at AGS energies (2-8 AGeV). The sensitivity of the multidimensional correlation functions to both the geometry and dynamics of the hot pionemitting system provide a stringent test of transport models of heavy ion collisions. Detailed comparisons are performed with the RQMD transport model, both with and without an explicit nuclear meanfield. These comparisons suggest that the evolution in the reaction dynamics with beam energy is different in the model and the data. A suggested signal of the onset of the transition to quark-gluon plasma in the inteferometry excitation function is not observed.

Published
1999
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2. The E895 π− Correlation Analysis — A Status Report

Author

Lei Huo, W. M. Zhang, S. Y. Panitkin, Y. M. Liu, S. Wang, M. L. Gilkes, T. J. M. Symons, J. E. Draper, R. Scharenburg, E. Hjort, T. Case, R. Witt, T. Wienold, D. Keane, P. Chung, James Alexander, E. LeBras, Morton Kaplan, B. K. Srivastava, A. C. Das, N. T. Porile, Z. Milosevic, L. Wood, Russell Wells, H. Liu, Roy A. Lacey, G. Rai, R. L. McGrath, N. N. Ajitanand, H. G. Ritter, J. L. Romero, M. Heffner, D. Best, N. T. B. Stone, Xiaodong Yang, L. S. Schroeder, David Krofcheck, A. S. Hirsch, I. Chemakin, B. Caskey, J. Whitfield, V. Cianciolo, Kenneth M. Crowe, R. Soltz, H. Hiejima, J. C. Kintner, Y. Zhang, M. Justice, J. Lauret, D. L. Olson, M. A. Lisa, J. L. Chance, D. Cebra, C. Pinkenburg, P. Brady, S. Gushue, and Brian Cole

Subjects
Physics, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Nucleation, Degrees of freedom (physics and chemistry), Plasma, Status report, Ion, Nuclear physics, Correlation function, Correlation analysis, High Energy Physics::Experiment, Nuclear Experiment
Abstract

A primary goal of high-enery heavy ion physics is to create and study the quark-gluon plasma (QGP), a phase of matter in which partonic- instead of hadronic- degrees of freedom describe the system. Several transport, hydrodynamic, and nucleation theories1,2,3,4 suggest that energy densities achieved in central collisions between heavy ions at AGS energies may be sufficient to create the QGP.

Published
1998
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3. H Dibaryon Search in p-A Collisions at the AGS

Author

G. Rai, R. A. Soltz, A. D. Frawley, M. Gilkes, Y. Torun, Y. H. Shin, M. Moulson, Kenneth Francis Read, Richard C. Fernow, S. Sorenson, D. Keane, M. Rosati, E. P. Hartouni, H. Hiejima, D. P. Morrison, D. Winter, Xiaodong Yang, N. Maeda, R. L. McGrath, L. R. Remsberg, W. A. Zajc, M. Kreisler, Ju Hwan Kang, Brian Cole, V. Cianciolo, N. Namboodiri, Saskia Mioduszewski, I. Chemakin, Yanxi Zhang, J. H. Thomas, S. Gushue, M. Justice, and H.G. Kirk

Subjects
Physics, Time of flight detector, Spectrometer, Proton, Physics::Instrumentation and Detectors, Cherenkov detector, Tracking (particle physics), Collision, Particle identification, law.invention, Nuclear physics, Momentum, law, High Energy Physics::Experiment, Nuclear Experiment
Abstract

Experiment 910 at the Brookhaven National Laboratory AGS accelerator is a study of proton-nucleus collisions using 6, 12.5 and 18 GeV/c proton beams. E910 was designed to have close to 100% acceptance, and to provide a large enough data sample to allow particle production to be studied as a function of collision “centrality”. The E910 spectrometer is built around a large TPC, as shown schematically in fig. 1. Because the TPC does not provide good particle identification or momentum resolution at high momentum, these are obtained by including downstream tracking, a time of flight detector and a Cherenkov detector.

Published
1998
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