scholarly journals Study of the GEM detector performance in BM@N experiment

2018 ◽  
Vol 177 ◽  
pp. 04004
Author(s):  
Sergei Bazylev ◽  
Mikhail Kapishin ◽  
Kacper Kapusniak ◽  
Vladimir Karjavine ◽  
Sergei Khabarov ◽  
...  
Keyword(s):  
Tracking System ◽  
Deuteron Beam ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Fixed Target ◽  
Detector Performance ◽  
Ion Collisions ◽  
Target Experiment ◽  
Gem Detector ◽  
Gem Detectors

BM@N is the fixed target experiment at the accelerator complex NICA-Nuclotron aimed to study nuclear matter in the relativistic heavy ion collisions. Triple-GEM detectors were identified as appropriate for the BM@N tracking system located inside the analyzing magnet. Seven GEM chambers are integrated into the BM@N experimental setup and data acquisition system. GEM construction, main characteristics and first obtained results of the GEM tracking system performance in the technical run with the deuteron beam are shortly reviewed.

scholarly journals Performance of the BM@N GEM/CSC tracking system at the Nuclotron beam

2019 ◽  
Vol 204 ◽  
pp. 07009 ◽  
Author(s):  
A. Galavanov ◽  
M. Kapishin ◽  
K. Kapusniak ◽  
V. Karjavine ◽  
S. Khabarov ◽  
...  
Keyword(s):  
Tracking System ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Fixed Target ◽  
Ion Collisions ◽  
Target Experiment ◽  
Cathode Strip ◽  
Nuclotron Accelerator ◽  
Gem Detectors ◽  
Fixed Target Experiment

BM@N (Baryonic Matter at the Nuclotron) is a fixed target experiment aimed to study nuclear matter in the relativistic heavy-ion collisions at the Nuclotron accelerator in JINR. The BM@N tracking system is based on Gas Electron Multipliers (GEM) detectors mounted inside the BM@N analyzing magnet. The Cathode Strip Chamber (CSC) is installed outside the magnet. The CSC is used for improvement of particles momentum identification. The structure of the GEM detectors and the CSC prototype and the results of study of their characteristics are presented. The GEM detectors and CSC are integrated into the BM@N experimental setup and data acquisition system. The results of first tests of the GEM tracking system and CSC in last runs are shortly reviewed.

scholarly journals Influence of Backside Energy Leakages from Hadronic Calorimeters on Fluctuation Measures in Relativistic Heavy-Ion Collisions

Universe ◽  
2019 ◽  
Vol 5 (5) ◽  
pp. 126
Author(s):  
Andrey Seryakov
Keyword(s):  
High Energy Physics ◽  
System Size ◽  
Heavy Ion ◽  
High Energy ◽  
Relativistic Heavy Ion Collisions ◽  
Research Subject ◽  
Fixed Target ◽  
Main Research ◽  
Ion Collisions ◽  
Energy Physics

The phase diagram of the strongly interacting matter is the main research subject for different current and future experiments in high-energy physics. System size and energy scan programs aim to find a possible critical point. One of such programs was accomplished by the fixed-target NA61/SHINE experiment in 2018. It includes six beam energies and six colliding systems: p + p, Be + Be, Ar + Sc, Xe + La, Pb + Pb and p + Pb. In this study, we discuss how the efficiency of centrality selection by forward spectators influences multiplicity and fluctuation measures and how this influence depends on the size of colliding systems. We use SHIELD and EPOS Monte-Carlo (MC) generators along with the wounded nucleon model, introduce a probability to lose a forward spectator and spectator energy loss. We show that for light colliding systems such as Be or Li even a small inefficiency in centrality selection has a dramatic impact on multiplicity scaled variance. Conversely, heavy systems such as Ar + Sc are much less prone to the effect.

J-PARC heavy ion experiment

2020 ◽  
pp. 2040005
Author(s):  
Takashi Hachiya
Keyword(s):  
High Speed ◽  
Ion Beam ◽  
Dense Matter ◽  
Heavy Ion ◽  
Current Status ◽  
Fixed Target ◽  
Ion Collisions ◽  
Target Experiment ◽  
Large Acceptance ◽  
Fixed Target Experiment

J-PARC Heavy Ion project (J-PARC-HI) is a future fixed target experiment to study the properties of the dense matter created by the heavy-ion collisions with 1–12[Formula: see text]AGeV/[Formula: see text] at J-PARC. This project aims to search for the QCD phase boundary and its critical endpoint and to study the equation of state of the dense matter at J-PARC. For this purpose, the high-intensity beam and the precision detector with high-speed DAQ are necessary. J-PARC will be upgraded to produce the world’s highest intensity of heavy-ion beam by adding a new compact heavy-ion linac and a booster ring and utilizing the existing RCS and MR synchrotrons. We will construct the multi-purpose spectrometer with a large acceptance to measure hadrons, dileptons and photons, and their correlations and fluctuations. In these proceedings, we will report the current status of the project, the design of the detector configuration, and detector R&D.

A high resolution tracking system for the investigation of relativistic heavy ion collisions

1991 ◽  
Vol 525 ◽  
pp. 609-612
Author(s):  
S.V. Greene ◽  
T.K. Hemmick ◽  
J.T. Mitchell ◽  
B. Shivakumar ◽  
J. Fischer ◽  
...  
Keyword(s):  
High Resolution ◽  
Heavy Ion Collisions ◽  
Tracking System ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions

scholarly journals INFLUENCE OF STATISTICAL FLUCTUATIONS ON K/π RATIOS IN RELATIVISTIC HEAVY ION COLLISIONS

2001 ◽  
Vol 16 (07) ◽  
pp. 1227-1235 ◽  
Author(s):  
C. B. YANG ◽  
X. CAI
Keyword(s):  
Negative Binomial ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Relative Variance ◽  
Ion Collisions ◽  
Statistical Fluctuations ◽  
Binomial Distributions ◽  
The Mean ◽  
Multiplicity Distributions ◽  
Statistical Background

The influence of pure statistical fluctuations on K/π ratio is investigated in an event-by-event way. Poisson and the modified negative binomial distributions are used as the multiplicity distributions since they both have statistical background. It is shown that the distributions of the ratio in these cases are Gaussian, and the mean and relative variance are given analytically.

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