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result(s) for
"Majoros, T."
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Identification of Load Profiles for Rural and Urban Consumers in Bihor County, Romania
2024
The purpose of this study is to identify the load profile of the residential rural and urban residential consumers in Bihor County. This profiling will be a first step in identifying the appropriate load profile forecasting method for the specific consumer profile. Also, this profiling could help develop policies on increasing consumer energy awareness, or adapting the implementation of smart meters in rural or urban areas and applying some specific hourly prices. This load profiling will be assessed versus the EU profiles and conclusions will be drawn on this comparison. This study was developed using a multi annual database including consumers from a few cities and tens of villages in Bihor County. Each database was filtered for noise and absurd values. The nature of power consumption is well known for its temporal variability and this paper will attempt to highlight this essential aspect of load profiling.
Journal Article
Creation of quark–gluon plasma droplets with three distinct geometries
2019
Experimental studies of the collisions of heavy nuclei at relativistic energies have established the properties of the quark–gluon plasma (QGP), a state of hot, dense nuclear matter in which quarks and gluons are not bound into hadrons1–4. In this state, matter behaves as a nearly inviscid fluid5 that efficiently translates initial spatial anisotropies into correlated momentum anisotropies among the particles produced, creating a common velocity field pattern known as collective flow. In recent years, comparable momentum anisotropies have been measured in small-system proton–proton (p+p) and proton–nucleus (p+A) collisions, despite expectations that the volume and lifetime of the medium produced would be too small to form a QGP. Here we report on the observation of elliptic and triangular flow patterns of charged particles produced in proton–gold (p+Au), deuteron–gold (d+Au) and helium–gold (3He+Au) collisions at a nucleon–nucleon centre-of-mass energy \\[\\sqrt {s_{{\\mathrm{NN}}}\\] = 200 GeV. The unique combination of three distinct initial geometries and two flow patterns provides unprecedented model discrimination. Hydrodynamical models, which include the formation of a short-lived QGP droplet, provide the best simultaneous description of these measurements.
Journal Article
Measurement of charged hadron multiplicity in Au+Au collisions at sNN= 200 GeV with the sPHENIX detector
by
Bernauer, J. C.
,
Croft, E.
,
Schaefer, B.
in
Charged particles
,
Classical and Quantum Gravitation
,
Collaboration
2025
A
bstract
The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of
s
NN
= 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover |
η
|
<
1
.
1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
Journal Article
Measurement of charged hadron multiplicity in Au+Au collisions at$\\sqrt{{\\textrm{s}}_{\\textrm{NN}}}$= 200 GeV with the sPHENIX detector
by
Bernauer, J. C.
,
Croft, E.
,
Schaefer, B.
in
Heavy Ion Experiments
,
Heavy-Ion Collision
,
Quark Gluon Plasma
2025
The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of $\\sqrt{{\\textrm{s}}_{\\textrm{NN}}}$ = 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover |η| < 1.1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
Journal Article
Measurement of charged hadron multiplicity in Au+Au collisions at$\\sqrt{{\\textrm{s}}_{\\textrm{NN}}}$= 200 GeV with the sPHENIX detector
by
Bernauer, J. C.
,
Croft, E.
,
Schaefer, B.
in
heavy ion experiments
,
heavy-ion collision
,
quark gluon plasma
2025
The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of $\\sqrt{{\\textrm{s}}_{\\textrm{NN}}}$ = 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover |η| < 1.1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
Journal Article
Measurement of charged hadron multiplicity in Au+Au collisions at$$ \\sqrt{{\\textrm{s}}_{\\textrm{NN}}} $$= 200 GeV with the sPHENIX detector
by
Bernauer, J. C.
,
Croft, E.
,
Schaefer, B.
in
Heavy Ion Experiments
,
Heavy-Ion Collision
,
Quark Gluon Plasma
2025
The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of$$ \\sqrt{{\\textrm{s}}_{\\textrm{NN}}} $$s NN = 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover | η | < 1 . 1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
Journal Article
Measurement of charged hadron multiplicity in Au + Au collisions at√s̅_̅(̅N̅N̅)̅= 200 GeV with the sPHENIX detector
by
Bernauer, J. C.
,
Croft, E.
,
Schaefer, B.
in
Heavy Ion Experiments
,
Heavy-Ion Collision
,
NUCLEAR PHYSICS AND RADIATION PHYSICS
2025
The pseudorapidity distribution of charged hadrons produced in Au + Au collisions at a center-of-mass energy of √s̅_̅(̅N̅N̅)̅ = 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover |η| < 1.1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
Journal Article
Measurement of charged hadron multiplicity in Au+Au collisions at s NN$$ \\sqrt{{\\textrm{s}}_{\\textrm{NN}}} $$= 200 GeV with the sPHENIX detector
by
H. Pereira Da Costa
,
W. Goodman
,
M. S. Khan
in
Heavy Ion Experiments
,
Heavy-Ion Collision
,
Quark Gluon Plasma
2025
Abstract The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of s NN$$ \\sqrt{{\\textrm{s}}_{\\textrm{NN}}} $$= 200 GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover |η| < 1.1 across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
Journal Article
A Comparison of the Effects of Neutron and Gamma Radiation in Silicon Photomultipliers
2019
The effects of radiation damage in silicon photomultipliers (SiPMs) from gamma rays have been measured and compared with the damage produced by neutrons. Several types of MPPCs from Hamamatsu were exposed to gamma rays and neutrons at the Solid State Gamma Ray Irradiation Facility (SSGRIF) at Brookhaven National Lab and the Institute for Nuclear Research (Atomki) in Debrecen, Hungary. The gamma ray exposures ranged from 1 krad to 1 Mrad and the neutron exposures ranged from 10\\(^8\\) n/cm\\(^2\\) to 10\\(^{12}\\) n/cm\\(^2\\). The main effect of gamma ray damage is an increase in the noise and leakage current in the irradiated devices, similar to what is seen from neutron damage, but the level of damage is considerably less at comparable high levels of exposure. In addition, the damage from gamma rays saturates after a few hundred krad, while the damage from neutrons shows no sign of saturation, suggestive of different damage mechanisms in the two cases. The change in optical absorption in the window material of the SiPMs due to radiation was also measured. This study was carried out in order to evaluate the use of SiPMs for particle physics applications with moderate levels of radiation exposures.
Design and Beam Test Results for the sPHENIX Electromagnetic and Hadronic Calorimeter Prototypes
2018
The super Pioneering High Energy Nuclear Interaction eXperiment (sPHENIX) at the Relativistic Heavy Ion Collider (RHIC) will perform high precision measurements of jets and heavy flavor observables for a wide selection of nuclear collision systems, elucidating the microscopic nature of strongly interacting matter ranging from nucleons to the strongly coupled quark-gluon plasma. A prototype of the sPHENIX calorimeter system was tested at the Fermilab Test Beam Facility as experiment T-1044 in the spring of 2016. The electromagnetic calorimeter (EMCal) prototype is composed of scintillating fibers embedded in a mixture of tungsten powder and epoxy. The hadronic calorimeter (HCal) prototype is composed of tilted steel plates alternating with plastic scintillator. Results of the test beam reveal the energy resolution for electrons in the EMCal is \\(2.8\\%\\oplus~15.5\\%/\\sqrt{E}\\) and the energy resolution for hadrons in the combined EMCal plus HCal system is \\(13.5\\%\\oplus 64.9\\%/\\sqrt{E}\\). These results demonstrate that the performance of the proposed calorimeter system satisfies the sPHENIX specifications.