scholarly journals Status of the Compressed Baryonic Matter experiment at FAIR

2020 ◽  
Vol 29 (02) ◽  
pp. 2030001 ◽  
Author(s):  
Peter Senger
Keyword(s):  
High Speed ◽  
Reaction Rates ◽  
Heavy Ion ◽  
High Energy ◽  
Particle Identification ◽  
Baryonic Matter ◽  
Track Reconstruction ◽  
Particle Correlations And Fluctuations ◽  
Compressed Baryonic Matter ◽  
Radiation Hard

The Compressed Baryonic Matter (CBM) experiment will investigate high-energy heavy-ion collisions at the international Facility for Antiproton and Ion Research (FAIR), which is under construction in Darmstadt, Germany. The CBM research program is focused on the exploration of QCD matter at neutron star core densities, such as study of the equation-of-state and the search for phase transitions. Key experimental observables include (multi-) strange (anti-) particles, electron-positron pairs and dimuons, particle correlations and fluctuations, and hyper-nuclei. In order to measure these diagnostic probes multi-differentially with unprecedented precision, the CBM detector and data acquisition systems are designed to run at reaction rates up to 10 MHz. This requires the development of fast and radiation hard detectors and readout electronics for track reconstruction, electron and muon identification, time-of-flight (TOF) determination and event characterization. The data are read-out by ultra-fast, radiation-tolerant, and free-streaming front-end electronics, and then transferred via radiation-hard data aggregation units and high-speed optical connections to a high-performance computing center. A fast and highly parallelized software will perform online track reconstruction, particle identification and event analysis. The components of the CBM experimental setup will be discussed and results of physics performance studies will be presented.

scholarly journals Cosmic matter in the laboratory - the Compressed Baryonic Matter experiment at FAIR

2018 ◽  
Vol 182 ◽  
pp. 02117
Author(s):  
Peter Senger
Keyword(s):  
High Performance ◽  
Reaction Rates ◽  
High Energy ◽  
Baryonic Matter ◽  
Lepton Pairs ◽  
Chiral Phase ◽  
Qcd Phase Diagram ◽  
Compressed Baryonic Matter ◽  
The Status ◽  
High Performance Computing Cluster

The Compressed Baryonic Matter (CBM) experiment will be one of the major scientific pillars of the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt. The goal of the CBM research program is to explore the QCD phase diagram in the region of high baryon densities using high-energy nucleus-nucleus collisions. This includes the study of the equation-of-state of nuclear matter at neutron star core densities, and the search for the deconfinement and chiral phase transitions. The CBM detector is designed to measure rare diagnostic probes such as hadrons including multi-strange (anti-) hyperons, lepton pairs, and charmed particles with unprecedented precision and statistics. Most of these particles will be studied for the first time in the FAIR energy range. In order to achieve the required precision, the measurements will be performed at very high reaction rates of 1 to 10 MHz. This requires very fast and radiation-hard detectors, a novel data read-out and analysis concept based on free streaming front-end electronics, and a high-performance computing cluster for online event selection. The physics program and the status of the proposed CBM experiment will be discussed.

scholarly journals Astrophysics in the Laboratory—The CBM Experiment at FAIR

Particles ◽  
2020 ◽  
Vol 3 (2) ◽  
pp. 320-335
Author(s):  
Peter Senger
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Baryonic Matter ◽  
Quantum Chromo Dynamics ◽  
Ion Collisions ◽  
Physics Program ◽  
Supernova Explosions ◽  
Under Construction ◽  
Density Equation ◽  
The Universe

The future “Facility for Antiproton and Ion Research” (FAIR) is an accelerator-based international center for fundamental and applied research, which presently is under construction in Darmstadt, Germany. An important part of the program is devoted to questions related to astrophysics, including the origin of elements in the universe and the properties of strongly interacting matter under extreme conditions, which are relevant for our understanding of the structure of neutron stars and the dynamics of supernova explosions and neutron star mergers. The Compressed Baryonic Matter (CBM) experiment at FAIR is designed to measure promising observables in high-energy heavy-ion collisions, which are expected to be sensitive to the high-density equation-of-state (EOS) of nuclear matter and to new phases of Quantum Chromo Dynamics (QCD) matter at high densities. The CBM physics program, the relevant observables and the experimental setup will be discussed.

scholarly journals The Compressed Baryonic Matter experiment at FAIR

2018 ◽  
Vol 171 ◽  
pp. 12002 ◽  
Author(s):  
Claudia Höhne
Keyword(s):  
Phase Diagram ◽  
Feasibility Studies ◽  
Special Focus ◽  
Baryonic Matter ◽  
Track Reconstruction ◽  
Intermediate Range ◽  
Qcd Phase Diagram ◽  
Compressed Baryonic Matter ◽  
Physics Program ◽  
First Order Phase Transition

The CBM experiment will investigate highly compressed baryonic matter created in A+A collisions at the new FAIR research center. With a beam energy range up to 11 AGeV for the heaviest nuclei at the SIS 100 accelerator, CBM will investigate the QCD phase diagram in the intermediate range, i.e. at moderate temperatures but high net-baryon densities. This intermediate range of the QCD phase diagram is of particular interest, because a first order phase transition ending in a critical point and possibly new highdensity phases of strongly interacting matter are expected. In this range of the QCD phase diagram only exploratory measurements have been performed so far. CBM, as a next generation, high-luminosity experiment, will substantially improve our knowledge of matter created in this region of the QCD phase diagram and characterize its properties by measuring rare probes such as multi-strange hyperons, dileptons or charm, but also with event-by-event fluctuations of conserved quantities, and collective flow of identified particles. The experimental preparations with special focus on hadronic observables and strangeness is presented in terms of detector development, feasibility studies and fast track reconstruction. Preparations are progressing well such that CBM will be ready with FAIR start. As quite some detectors are ready before, they will be used as upgrades or extensions of already running experiments allowing for a rich physics program prior to FAIR start.

The compressed baryonic matter experiment at FAIR

Open Physics ◽  
2012 ◽  
Vol 10 (6) ◽  
Author(s):  
Peter Senger
Keyword(s):  
Phase Diagram ◽  
Phase Transitions ◽  
Equation Of State ◽  
High Energy ◽  
Baryonic Matter ◽  
Lepton Pairs ◽  
Chiral Phase ◽  
Qcd Phase Diagram ◽  
Compressed Baryonic Matter ◽  
Large Acceptance

AbstractThe Compressed Baryonic Matter (CBM) experiment will be one of the major scientific pillars of the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt. The goal of the CBM research program is to explore the QCD phase diagram in the region of high baryon densities using high-energy nucleus-nucleus collisions. This includes the study of the equation-of-state of nuclear matter at high densities, and the search for the deconfinement and chiral phase transitions. The CBM detector is designed to measure both bulk observables with large acceptance and rare diagnostic probes such as charmed particles and vector mesons decaying into lepton pairs.

Particle Identification in High Energy Collisions at RHIC

2005 ◽  
Vol 1 ◽  
Author(s):  
Brian T Love
Keyword(s):  
High Energy Physics ◽  
Collaborative Work ◽  
National Laboratory ◽  
Nuclear Interaction ◽  
Heavy Ion ◽  
High Energy ◽  
Brookhaven National Laboratory ◽  
Particle Identification ◽  
Theoretical Physics ◽  
Relativistic Heavy Ion Collider

This article provides a technical introduction to the study of collider physics by focusing on the concept of particle identification (PID). Through a general overview of the Relativistic Heavy Ion Collider (RHIC) and the Pioneering High Energy Nuclear Interaction Experiment (PHENIX), the author discusses the role of Vanderbilt University researchers in collaborative work at the Brookhaven National Laboratory. After explaining the concept of event reconstruction and centrality with graphical images of experimental results, the author outlines the time-of-flight method of particle identification in high energy physics. A final presentation of the design concept for the Multi-Gap Resistive Plate Chamber (MRPC) integrates the more traditional foundations of theoretical physics with the next generation of physics experimentation in the field.

scholarly journals Prospects for the study of event-by-event fluctuations at MPD/NICA project

2019 ◽  
Vol 204 ◽  
pp. 07014
Author(s):  
Alexander Mudrokh
Keyword(s):  
Full Range ◽  
Heavy Ion ◽  
Particle Identification ◽  
Baryonic Matter ◽  
Phase Space Volume ◽  
Qcd Phase Diagram ◽  
Ion Collisions ◽  
Accessible Region ◽  
Nica Project ◽  
Space Volume

One of the main physics goals of the Multi Purpose Detector (MPD) is to investigate hot and dense baryonic matter in heavy ion collisions at NICA energies to search for the possible critical end point (CEP). Since the location of CEP is not clear the entire accessible region of the QCD phase diagram needs to be explored by scanning the full range of available beam energies. In case of CEP existence it can be observed by abnormal fluctuations of various quantities such as net-proton multiplicity. This task requires excellent particle identification (PID) capability over as large as possible phase space volume. The identification of charged hadrons is achieved at the momenta of 0:1 – 3 GeV/c. The results of hadron identification and preliminary possibility estimation of the study of event-by-event fluctuations at MPD will be presented.

scholarly journals Anti- and Hyper-Nuclei Production at the LHC with ALICE

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 47
Author(s):  
Luca Barioglio
Keyword(s):  
High Energy Physics ◽  
Hadron Collider ◽  
Theoretical Models ◽  
High Energy ◽  
Particle Identification ◽  
Track Reconstruction ◽  
Alice Experiment ◽  
Proton Proton ◽  
Open Question ◽  
Production Mechanisms

At the Large Hadron Collider (LHC) a significant production of (anti-)(hyper-)nuclei is observed in proton-proton (pp), proton-lead (p-Pb) and lead-lead (Pb-Pb) collisions. The measurement of the production yields of light (anti-)nuclei is extremely important to provide insight into the production mechanisms of nuclear matter, which is still an open question in high energy physics. The outstanding particle identification (PID) capabilities of the ALICE detectors allow the identification of rarely produced particles such as deuterons, 3 He and their antiparticles. From the production spectra measured for light (anti-)nuclei with ALICE, the key observables of the production mechanisms (antimatter/matter ratio, coalescence parameter, nuclei/protons ratio) are computed and compared with the available theoretical models. Another open question is the determination of the hypertriton lifetime: published experimental values show a lifetime shorter than the expected one, which should be close to that of the free Λ hyperon. Thanks to the high-resolution track reconstruction capabilities of the ALICE experiment, it has been possible to determine the hypertriton lifetime at the highest Pb-Pb collisions energy with the highest precision ever reached.

scholarly journals Compressed baryonic matter at FAIR: JINR participation

2015 ◽  
Vol 39 ◽  
pp. 1560098 ◽  
Author(s):  
P. Kurilkin ◽  
V. Ladygin ◽  
A. Malakhov ◽  
P. Senger
Keyword(s):  
Experimental Data ◽  
Detection System ◽  
Heavy Ion ◽  
Baryonic Matter ◽  
Technical Aspects ◽  
Compressed Baryonic Matter ◽  
Ion Collisions ◽  
Scientific Mission ◽  
Momentum Resolution ◽  
Muon Detection

The scientific mission of the Compressed Baryonic Matter(CBM) experiment is the study of the nuclear matter properties at the high baryon densities in heavy ion collisions at the Facility of Antiproton and Ion Research (FAIR) in Darmstadt. We present the results on JINR participation in the CBM experiment. JINR teams are responsible on the design, the coordination of superconducting(SC) magnet manufacture, its testing and installation in CBM cave. Together with Silicon Tracker System it will provide the momentum resolution better 1[Formula: see text] for different configuration of CBM setup. The characteristics and technical aspects of the magnet are discussed. JINR plays also a significant role in the manufacture of two straw tracker station for the muon detection system. JINR team takes part in the development of new method for simulation, processing and analysis experimental data for different basic detectors of CBM.

scholarly journals Implementation of ACTS into sPHENIX Track Reconstruction

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Joseph D. Osborn ◽  
Anthony D. Frawley ◽  
Jin Huang ◽  
Sookhyun Lee ◽  
Hugo Pereira Da Costa ◽  
...  
Keyword(s):  
Nuclear Physics ◽  
High Efficiency ◽  
National Laboratory ◽  
Performance Status ◽  
Heavy Ion ◽  
High Energy ◽  
Brookhaven National Laboratory ◽  
Heavy Flavor ◽  
Track Reconstruction ◽  
Relativistic Heavy Ion Collider

AbstractsPHENIX is a high energy nuclear physics experiment under construction at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory (BNL). The primary physics goals of sPHENIX are to study the quark-gluon-plasma, as well as the partonic structure of protons and nuclei, by measuring jets, their substructure, and heavy flavor hadrons in $$p$$ p $$+$$ + $$p$$ p , p + Au, and Au + Au collisions. sPHENIX will collect approximately 300 PB of data over three run periods, to be analyzed using available computing resources at BNL; thus, performing track reconstruction in a timely manner is a challenge due to the high occupancy of heavy ion collision events. The sPHENIX experiment has recently implemented the A Common Tracking Software (ACTS) track reconstruction toolkit with the goal of reconstructing tracks with high efficiency and within a computational budget of 5 s per minimum bias event. This paper reports the performance status of ACTS as the default track fitting tool within sPHENIX, including discussion of the first implementation of a time projection chamber geometry within ACTS.

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