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 procedure of reconstruction for coordinate detectors of SRC setup at BM@N was developed for both simulated and experimental data measured in 2018. Multiwire proportional chambers and silicon ...detectors were located upstream of the analyzing magnet at the SRC at BM@N setup. The developed algorithms were added to the official software. The reconstruction results were compared with the simulation. The main characteristics of the coordinate detectors upstream the analyzing magnet were evaluated 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.
The algorithm for track reconstruction in multiwire proportional chambers (MWPCs) of the BM@N (Baryonic Matter at Nuclotron) experiment is described. The beam tracks before the interaction with the ...target and trajectories of charged particles after the interaction are reconstructed using Nuclotron experimental data with deuteron and carbon beams colliding with the carbon and copper targets. Trajectories are extrapolated to the interaction point and to drift chambers. The efficiencies of MWPCs have been obtained. Beam parameters (transverse dimensions and angular spread) have been measured as well.
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.
NICA-Nuclotron (Nuclotron-based Ion Collider fAility) is a new accelerator complex being constructed at the Joint Institute for Nuclear Research (Dubna, Russia) to study properties of dense baryonic ...matter. BM@N (Baryonic Matter at Nuclotron) is the first fixed target experiment at the NICA-Nuclotron facility. The aim of the experiment is to study collisions of relativistic ion beams of the kinetic energy from 1 to 4.5 AGeV with fixed targets. BM@N energies are perfectly suitable for strange hypernuclei investigation. This year BM@N started a new physics program aiming at studying the Short Range Correlations (SRC). SRC are brief fluctuations of two nucleons with high and opposite momenta, where each of them is higher than the Fermi momentum for the given nucleus, and the center of mass momentum is close to zero. The presence of SRC pairs within nuclei and their properties have important implications for nuclear physics, high energy physics, and astrophysics. The BM@N setup uses a carbon beam hitting a liquid hydrogen target, which makes it possible to detect the residual nucleus after hard knock-out of the two SRC nucleons. We present an overview of the main detection systems used for the SRC measurement as well as the first results from the tracking detectors.
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.
The muon system of the CMS facility (CERN) is presented. It uses detectors of three types: drift tubes, resistive plate chambers, and cathode-strip chambers. The characteristics of the muon system in ...the period of the CMS data taking in
pp
collisions during 2016–2018 are presented. Plans for the development of the muon system in the Phase II upgrade of the CMS project are presented. The problems of replacing greenhouse gases used in CMS muon detectors with gases with a lower global warming potential are discussed. The results of studying the effects of radiation aging of cathode-strip chambers at the GIF++ facility (CERN) are presented. The possibility of CSC operation with a reduced content of CF
4
in the working gas mixture is being investigated.
Inclusive e(+/-)p single and double differential cross sections for neutral and charged current deep inelastic scattering processes are measured with the H1 detector at HERA. The data were taken at a ...centre-of-mass energy of root s = 319 GeV with a total integrated luminosity of 333.7 pb(-1) shared between two lepton beam charges and two longitudinal lepton polarisation modes. The differential cross sections are measured in the range of negative four-momentum transfer squared, Q(2), between 60 and 50 000GeV(2), and Bjorken x between 0.0008 and 0.65. The measurements are combined with earlier published unpolarised H1 data to improve statistical precision and used to determine the structure function xF(3)(gamma Z). A measurement of the neutral current parity violating structure function F-2(gamma Z) is presented for the first time. The polarisation dependence of the charged current total cross section is also measured. The new measurements are well described by a next-to-leading order QCD fit based on all published H1 inclusive cross section data which are used to extract the parton distribution functions of the proton.
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