Timothy Piazza - Academia.edu (original) (raw)
Papers by Timothy Piazza
Aps Meeting Abstracts, May 1, 1996
ABSTRACT
... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; ... more ... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; Cleland, WE ; Clemen, M. ; Sonnadara, U. ; Voloshin, S. ; Zhang, Z. [University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)] ; Bersch, R. ; Chang, WC ; Dee, J. ; Johnson ...
Aps Meeting Abstracts, May 1, 1996
ABSTRACT
... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; ... more ... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; Cleland, WE ; Clemen, M. ; Sonnadara, U. ; Voloshin, S. ; Zhang, Z. [University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)] ; Bersch, R. ; Chang, WC ; Dee, J. ; Johnson ...
Physics Letters B, 2000
The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon c... more The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon collisions. Via collective effects, production can be enhanced in nucleus-nucleus collisions as compared to p+p collisions [1, 2, 3 and 4]. The observed yield of antiprotons is a result of ...
Physics Letters B, 2000
The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon c... more The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon collisions. Via collective effects, production can be enhanced in nucleus-nucleus collisions as compared to p+p collisions [1, 2, 3 and 4]. The observed yield of antiprotons is a result of ...
Physical Review C, Dec 8, 2000
Strangeness production in heavy-ion collisions when compared to proton-proton collisions is poten... more Strangeness production in heavy-ion collisions when compared to proton-proton collisions is potentially a sensitive probe of collective energy deposition and therefore of heavy ion reaction mechanisms in general. Its study may provide insight into the properties of hot and dense nuclear matter 1. Indeed, enhanced strangeness production has been observed at Alternating-Gradient Synchrotron AGS and Super Proton Synchrotron SPS energies 2, 3. Experimental measurements indicate that high baryon density is reached in central heavy- ...
Physical Review C, Oct 7, 1999
Measurements of two-particle relative momentum correlations 1, 2 are widely used in relativistic ... more Measurements of two-particle relative momentum correlations 1, 2 are widely used in relativistic heavy-ion physics as a tool for extracting information about the spatial and temporal extent of the system at freeze-out. The complexity of heavy-ion reactions demands the utilization of different particles as probes of the reaction zone in order to obtain a reliable picture of the collision. Most of the published experimental data are measurements of two-meson ( or K) 3–7 correlation functions while the information concerning baryon freeze- ...
Physical Review C, Feb 1, 1999
Directed flow of deuterons, tritons, 3 He, and 4 He is studied in Au+ Au collisions at a beam mom... more Directed flow of deuterons, tritons, 3 He, and 4 He is studied in Au+ Au collisions at a beam momentum of 10.8 A GeV/c. Flow of all particles is analyzed as a function of transverse momentum for different centralities of the collision. The directed flow signal, v 1 (pt), is found to increase with particle mass. This mass dependence is strongest in the projectile rapidity region.
Physical Review C, Jun 1, 1995
We present the results of an analysis of charged particle pseudorapidity distributions in the cen... more We present the results of an analysis of charged particle pseudorapidity distributions in the central region in collisions of a Au projectile withAl, Cu, Au, and U targets at an incident momentum of 10. 8 GeV/c per nucleon. The pseudorapidity distributions are presented as a function of transverse energy produced in thetarget or central pseudorapidity regions. The correlation between charged multiplicity and transverse energy measured in the central region, as well as the target and projectile regions, is also presented. We give results for ...
Physical Review C, Mar 1, 1997
Collisions between two gold nuclei of about 11A GeV/c momentum at the AGS have been characterized... more Collisions between two gold nuclei of about 11A GeV/c momentum at the AGS have been characterized rather completely in terms of the global observables, transverse energy ET 1 and charged particle multiplicity Nc 2. The picture that emerged from these measurements is that the two gold nuclei stop each other to a very high degree. Through comparison to models that reproduce the experimental observables, initial particle and energy densities have been inferred and maximum values around ten times normal nuclear matter density ...
9 N. Main St. Jamestown, NY 14701 Phone 716-665-2340 or 800-766-6606 Fax 716-665-2480 August 2001... more 9 N. Main St. Jamestown, NY 14701 Phone 716-665-2340 or 800-766-6606 Fax 716-665-2480 August 2001 Page 1 There are many ways to alter the characteristics of ultrasonic waves in a liquid contained in a tank. The ultrasonic waves can be frequency modulated (FM) by varying the output frequency of the ultrasonic generator. The ultrasonic waves can be amplitude modulated (AM) by changing the amplitude of the generator output and/or by tailoring the impedance versus frequency characteristics of the transducer array. A frequency modulated ultrasonic wave can be amplitude modulated. This is the most general case of "designer waveform" for a single generator driving a single transducer array. Multiple generators of different frequencies can drive multiple transducer arrays on the same tank; the addition of the resulting sound waves within the liquid creates the "designer waveform".
Bearing Steel Technologies: 10th Volume, Advances in Steel Technologies for Rolling Bearings, 2014
Journal of The Acoustical Society of America, 2006
... by Timothy William Piazza Doctor of Philosophy in Physics State University of New York at Sto... more ... by Timothy William Piazza Doctor of Philosophy in Physics State University of New York at Stony Brook ... Measured inclusive double differential multiplicities and related quantities for charged pion and protons in AU+AU collisions at 10.8 AGeV/c are presented as a function of centrality.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 1997
ABSTRACT We have constructed and tested a threshold Cherenkov detector inspired by the conceptual... more ABSTRACT We have constructed and tested a threshold Cherenkov detector inspired by the conceptual design of Giomataris and Charpak (Nucl. Instr. and Meth. A 310 (1991) 589). The basic design consists of a gas radiator followed by a photosensitive wire chamber using a solid Csl photocathode. The photon detector lies directly in the particle path and is required to have single photo-electron sensitivity and yet be insensitive to the passage of a charged particle. We have altered the design by adding a thin LiF window. This window allows one to separate the radiator and avalanche volumes, giving greater flexibility in the gas choices. Our detector was operated with C2F6 as the radiator gas at lengths of 120, 80, and 40 cm. The avalanche gas was 95%He + 5% CH4. At 95% electron efficiency, the pion efficiency was 1333, 1150, and 1100 for each of the lengths listed above.
Aps Meeting Abstracts, May 1, 1996
ABSTRACT
... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; ... more ... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; Cleland, WE ; Clemen, M. ; Sonnadara, U. ; Voloshin, S. ; Zhang, Z. [University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)] ; Bersch, R. ; Chang, WC ; Dee, J. ; Johnson ...
Aps Meeting Abstracts, May 1, 1996
ABSTRACT
... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; ... more ... S. ; Lacasse, R. ; Mark, SK ; Rosati, M. ; Wang, G. [McGill University, Montreal (Canada)] ; Cleland, WE ; Clemen, M. ; Sonnadara, U. ; Voloshin, S. ; Zhang, Z. [University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)] ; Bersch, R. ; Chang, WC ; Dee, J. ; Johnson ...
Physics Letters B, 2000
The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon c... more The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon collisions. Via collective effects, production can be enhanced in nucleus-nucleus collisions as compared to p+p collisions [1, 2, 3 and 4]. The observed yield of antiprotons is a result of ...
Physics Letters B, 2000
The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon c... more The production of antiprotons at AGS energies (1015A GeV) is near threshold in nucleon-nucleon collisions. Via collective effects, production can be enhanced in nucleus-nucleus collisions as compared to p+p collisions [1, 2, 3 and 4]. The observed yield of antiprotons is a result of ...
Physical Review C, Dec 8, 2000
Strangeness production in heavy-ion collisions when compared to proton-proton collisions is poten... more Strangeness production in heavy-ion collisions when compared to proton-proton collisions is potentially a sensitive probe of collective energy deposition and therefore of heavy ion reaction mechanisms in general. Its study may provide insight into the properties of hot and dense nuclear matter 1. Indeed, enhanced strangeness production has been observed at Alternating-Gradient Synchrotron AGS and Super Proton Synchrotron SPS energies 2, 3. Experimental measurements indicate that high baryon density is reached in central heavy- ...
Physical Review C, Oct 7, 1999
Measurements of two-particle relative momentum correlations 1, 2 are widely used in relativistic ... more Measurements of two-particle relative momentum correlations 1, 2 are widely used in relativistic heavy-ion physics as a tool for extracting information about the spatial and temporal extent of the system at freeze-out. The complexity of heavy-ion reactions demands the utilization of different particles as probes of the reaction zone in order to obtain a reliable picture of the collision. Most of the published experimental data are measurements of two-meson ( or K) 3–7 correlation functions while the information concerning baryon freeze- ...
Physical Review C, Feb 1, 1999
Directed flow of deuterons, tritons, 3 He, and 4 He is studied in Au+ Au collisions at a beam mom... more Directed flow of deuterons, tritons, 3 He, and 4 He is studied in Au+ Au collisions at a beam momentum of 10.8 A GeV/c. Flow of all particles is analyzed as a function of transverse momentum for different centralities of the collision. The directed flow signal, v 1 (pt), is found to increase with particle mass. This mass dependence is strongest in the projectile rapidity region.
Physical Review C, Jun 1, 1995
We present the results of an analysis of charged particle pseudorapidity distributions in the cen... more We present the results of an analysis of charged particle pseudorapidity distributions in the central region in collisions of a Au projectile withAl, Cu, Au, and U targets at an incident momentum of 10. 8 GeV/c per nucleon. The pseudorapidity distributions are presented as a function of transverse energy produced in thetarget or central pseudorapidity regions. The correlation between charged multiplicity and transverse energy measured in the central region, as well as the target and projectile regions, is also presented. We give results for ...
Physical Review C, Mar 1, 1997
Collisions between two gold nuclei of about 11A GeV/c momentum at the AGS have been characterized... more Collisions between two gold nuclei of about 11A GeV/c momentum at the AGS have been characterized rather completely in terms of the global observables, transverse energy ET 1 and charged particle multiplicity Nc 2. The picture that emerged from these measurements is that the two gold nuclei stop each other to a very high degree. Through comparison to models that reproduce the experimental observables, initial particle and energy densities have been inferred and maximum values around ten times normal nuclear matter density ...
9 N. Main St. Jamestown, NY 14701 Phone 716-665-2340 or 800-766-6606 Fax 716-665-2480 August 2001... more 9 N. Main St. Jamestown, NY 14701 Phone 716-665-2340 or 800-766-6606 Fax 716-665-2480 August 2001 Page 1 There are many ways to alter the characteristics of ultrasonic waves in a liquid contained in a tank. The ultrasonic waves can be frequency modulated (FM) by varying the output frequency of the ultrasonic generator. The ultrasonic waves can be amplitude modulated (AM) by changing the amplitude of the generator output and/or by tailoring the impedance versus frequency characteristics of the transducer array. A frequency modulated ultrasonic wave can be amplitude modulated. This is the most general case of "designer waveform" for a single generator driving a single transducer array. Multiple generators of different frequencies can drive multiple transducer arrays on the same tank; the addition of the resulting sound waves within the liquid creates the "designer waveform".
Bearing Steel Technologies: 10th Volume, Advances in Steel Technologies for Rolling Bearings, 2014
Journal of The Acoustical Society of America, 2006
... by Timothy William Piazza Doctor of Philosophy in Physics State University of New York at Sto... more ... by Timothy William Piazza Doctor of Philosophy in Physics State University of New York at Stony Brook ... Measured inclusive double differential multiplicities and related quantities for charged pion and protons in AU+AU collisions at 10.8 AGeV/c are presented as a function of centrality.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 1997
ABSTRACT We have constructed and tested a threshold Cherenkov detector inspired by the conceptual... more ABSTRACT We have constructed and tested a threshold Cherenkov detector inspired by the conceptual design of Giomataris and Charpak (Nucl. Instr. and Meth. A 310 (1991) 589). The basic design consists of a gas radiator followed by a photosensitive wire chamber using a solid Csl photocathode. The photon detector lies directly in the particle path and is required to have single photo-electron sensitivity and yet be insensitive to the passage of a charged particle. We have altered the design by adding a thin LiF window. This window allows one to separate the radiator and avalanche volumes, giving greater flexibility in the gas choices. Our detector was operated with C2F6 as the radiator gas at lengths of 120, 80, and 40 cm. The avalanche gas was 95%He + 5% CH4. At 95% electron efficiency, the pion efficiency was 1333, 1150, and 1100 for each of the lengths listed above.