.
A non-additive entropy is used to describe quark matter. We consider a non-extensive thermodynamic system in the framework of the MIT bag model of hadrons, in order to consider the correlation ...between quarks and gluons due to strong interactions. The non-additive entropy of the system describes quarks and gluons as two probabilistically independent subsystems. We analyze the phase diagram in terms of the correlation parameter
q
that enters the sum of entropies in the Tsallis prescription. For the case of non-zero chemical potentials it can be shown that the systems with
q
≤
q
max
may be associated with the weakly coupled systems while those with
q
>
q
max
are more correlated. Furthermore, we find that the critical temperature for the hadron increases as the correlation between quarks and gluons increases, according to the expectations.
Forward Diffractive Detector control system for Run 3 in the ALICE experiment Mejía Camacho, J.M.; Rodríguez Ramírez, S.A.; Cabanillas Noris, J.C. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
05/2023, Letnik:
1050
Journal Article
Recenzirano
The ALICE experiment went through major upgrades in preparation for Runs 3 and 4 at the CERN LHC, which foresee a significant increase in the data stream rate. To cope with it, a new Computing System ...Online–Offline (O2) was developed by ALICE and several detectors were upgraded. One of these upgrades corresponded to the ALICE Diffractive (AD) detector, which was replaced by the new Forward Diffractive Detector (FDD). A fundamental system that allows for recording of data as well as for the stable and safe operation of the experimental setup is the Detector Control System (DCS). The DCS controls, monitors, and configures detectors’ hardware and their subsystems among which are commercial hardware and specific custom equipment. In this work, we describe the implementation of the DCS of FDD, which was designed and developed using the SCADA commercial software WinCC Open Architecture (WinCC-OA®) and the Joint Controls Project (JCOP) Framework. We also describe the modeling of FDD-DCS as a finite state machine to be integrated into the ALICE Central DCS, and to be operated by DCS shifters in the run control center and, remotely, by detector experts. This new DCS was developed to comply with the new LHC operational standards that allow for processing the increased luminosity due to collisions at a higher energy, and for fulfilling the specific requirements of the ALICE experiment, in order to address the scientific challenges of its physics program.
We report on the status of the construction and installation of a new detector in the forward region of the ALICE experiment at the LHC. This detector will allow the study of processes with gaps at ...larger rapidity than those presently covered. A setup of two stations called AD (stands for ALICE Diffractive) on the right and on the left of the interaction point enhances significantly the efficiency to study diffractive physics and photon induced processes.
This case series of 5 patients with severely necrotic mpox highlights the predominantly necrotic nature of lesions seen in cases of severe mpox as shown by skin and lung biopsy, as well as the ...extensive dissemination of the infection, as shown by polymerase chain reaction (PCR) assessment in different body sites.
Patients were male, the median age was 37, all lived with HIV (2 previously undiagnosed), the median CD4
cell count was 106 cells/mm
, and 2/5 were not receiving antiretroviral treatment. The most common complication was soft tissue infection. Skin and lung biopsies showed extensive areas of necrosis. Mpox PCR was positive in various sites, including skin, urine, serum, and cerebrospinal fluid. The initiation of antiretroviral treatment, worsened the disease, like that seen in immune reconstitution syndrome. Three patients died due to multiple organ failure, presumably associated with mpox since coinfections and opportunistic pathogens were ruled out.
Severely necrotic manifestations of mpox in people living with advanced and untreated HIV are related to adverse outcomes.
The antioxidant capacity related to the phenolic composition of monospecific honeybee-collected pollen extract from the mesquite tree (
Prosopis juliflora) from Durango, Mexico, was evaluated in an ...in vitro-biological system (as inhibitor of lipid peroxidation on mouse hepatic microsomal preparations) and in an in vivo system (on homogenized liver of bromobenzene-intoxicated mice) by quantification of thiobarbituric acid-reactive substances (TBARS). The comparison of results obtained from these two different systems was also made. The results obtained suggest that pollen of
P. juliflora is an important source of flavonoids, which can be considered as natural antioxidants. Mesquite pollen extracts showed antioxidant activity related to the flavonol concentration in both the in vitro-biological system and the in vivo system with a lower activity in the latter of these systems. Under in vivo conditions and in those in which a state of oxidation in not induced, a high concentration of flavonols in the extract of mesquite pollen can have a pro-oxidant effect.
The spin alignment matrix element ρ00 for the vector mesons K∗0 and ϕ(1020) has been measured in RHIC at central rapidities. These measurements are consistent with the absence of polarization with ...respect to the reaction plane in mid-central Au+Au collisions whereas, when measured with respect to the production plane in the same reactions and in p+p collisions, a non-vanishing and p⊥-dependent ρ00 is found. We show that this behavior can be understood in a simple model of vector meson production where the spin of their constituent quarks is oriented during hadronization as the result of Thomas precession.
Front end electronics and first results of the ALICE V0 detector Zoccarato, Y.; Tromeur, W.; Aguilar, S. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
2011, Letnik:
626
Journal Article
Recenzirano
This paper gives a detailed description of the acquisition and trigger electronics especially designed for the V0 detector of ALICE at LHC. A short presentation of the detector itself is given before ...the description of the Front End Electronics (FEE) system, which is completely embedded within the LHC environment as far as acquisition (DAQ), trigger (CTP), and detector control (DCS) are concerned. It is able to detect on-line coincident events and to achieve charge (with a precision of 0.6 pC) and time measurements (with a precision of 100
ps). It deploys quite a simple architecture. It is however totally programmable and fully non-standard in discriminating events coming from Beam–Beam interaction and Beam-Gas background. Finally, raw data collected from the first LHC colliding beams illustrate the performance of the system.
The Large Hadron Collider will provide soon, beams of protons and collisions at high energy to the experiments. ALICE stands for A Large Ion Collider Experiment. It is one of the experiments at the ...Large Hadron Collider. ALICE will be dedicated to the study of heavy ion collisions. The main goal of ALICE is the observation of the transition of ordinary matter into a plasma of quarks and gluons. ALICE consists of 16 systems of detection. Two of them were designed and constructed in Mexico: i) The V0A detector, located at 3.2 mts. from the interaction point and ii) The cosmic ray detector on the top of the magnet. After a quick review of the LHC and the ALICE experiment we will focus on the description of these systems.
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