The Drift Chambers along with the Cathode-Strip Chambers form the outer tracker of the BM@N experiment. A full reconstruction chain for the Drift Chambers for both MC and experimental data is ...developed and implemented into the official software. The results of the reconstruction of data gathered during the first measurement dedicated to the Short-Range Correlations physics program of BM@N are compared to simulated data. Key performance parameters are estimated and analyzed.
The performance of the new Cathode Strip Chamber segment builder algorithm with simulated TeV muons is considered. The comparison of some of the main reconstruction characteristics is made. Some case ...study events are visualized in order to illustrate the improvement that the new algorithm gives to the reconstruction process.
Cathode-strip chambers (CSCs) are the main detectors of the endcap muon system of the CMS experiment. The increase in the energy and luminosity of the Large Hadron Collider (LHC) impacts the charged ...particles trajectory reconstruction procedure by increasing the rate and multiplicity of registered signals in the detectors. A series of improvements were added to the charged particle trajectory reconstruction procedure in CSCs. Hit-on-layer reconstruction was enhanced with a set of new methods. A new segment reconstruction algorithm was developed and implemented. The results of the improved reconstruction are given along with the comparison with the old approaches.
A new segment building algorithm for the Cathode Strip Chambers in the CMS experiment is presented. A detailed description of the new algorithm is given along with a comparison with the algorithm ...used in the CMS software. The new segment builder was tested with different Monte-Carlo data samples. The new algorithm is meant to be robust and effective for hard muons and the higher luminosity that is expected in the future at the LHC.
Distributed complex computing systems for data storage and processing are in common use in the majority of modern scientific centers. The design of such systems is usually based on recommendations ...obtained via a preliminary simulated model used and executed only once. However big experiments last for years and decades, and the development of their computing system is going on, not only quantitatively but also qualitatively. Even with the substantial efforts invested in the design phase to understand the systems configuration, it would be hard enough to develop a system without additional research of its future evolution. The developers and operators face the problem of the system behaviour predicting after the planned modifications. A system for grid and cloud services simulation is developed at LIT (JINR, Dubna). This simulation system is focused on improving the effciency of the grid/cloud structures development by using the work quality indicators of some real system. The development of such kind of software is very important for making a new grid/cloud infrastructure for such big scientific experiments like the JINR Tier1 site for WLCG. The simulation of some processes of the Tier1 site is considered as an example of our application approach.
The article provides an analysis of the tracks of emerging particles in the mathematical model of fractal thermodynamics after the computer processing of simulated data from the BM@N experiment.
JINR Grid Infrastructure: Status and Plans Baginyan, A.; Balandin, A.; Dolbilov, A. ...
Physics of particles and nuclei,
06/2024, Letnik:
55, Številka:
3
Journal Article
Recenzirano
The JINR grid infrastructure was created in 2003 at the Meshcheryakov Laboratory of Information Technologies and has been successfully developed ever since. The participation of JINR scientists in ...the experiments at the Large Hadron Collider (LHC) at CERN entailed the creation of computing clusters at JINR, which are integrated into a distributed computing environment for processing and storing hundreds of petabytes of data obtained from the LHC experiments. In this regard, the Tier1 center for the CMS experiment, being among the best worldwide, and the Tier2 center, which is the best in Russia, are particularly notable. At present, both of these centers serve the experiments at the NICA complex. The current state of the JINR grid infrastructure and its future development are presented.
A
bstract
First physics results of the BM@N experiment at the Nuclotron/NICA complex are presented on
π
+
and
K
+
meson production in interactions of an argon beam with fixed targets of C, Al, Cu, Sn ...and Pb at 3.2 A GeV. Transverse momentum distributions, rapidity spectra and multiplicities of
π
+
and
K
+
mesons are measured. The results are compared with predictions of theoretical models and with other measurements at lower energies.
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