Professional training for mega-science projects is a matter of pressing concern. The National Research Nuclear University MEPhI (NRNU MEPhI) created online courses on the topic of Strategic Academic ...Units (SAU). These courses are published on the most popular international platforms for mass open educational resources: Coursera and edX. NRNU MEPhI online courses are also presented on the National Open Education Platform and the Educational Portal of NRNU MEPhI. NRNU MEPhI students participate in various modern international projects, including megaprojects of the Joint Institute for Nuclear Research (JINR) among which are creation of the NICA collider, experiments on the synthesis of new elements, research in the field of the physics of condensed state of matter and environmental science carried out at a high-resolution neutron source. At the initiative of the JINR University Centre, the JINR Educational Portal was created. It hosts online courses created by JINR scientists on the topic of mega-projects. The report discusses proposals on the possible integration of the efforts of NRNU MEPhI teachers and JINR scientists in creating a digital multidisciplinary educational environment, which will support formation of individual learning trajectories for professionals for their further work in mega-science projects.
Portable X-ray sources were designed and produced for experimental study of radiator absorption uniformity and mapping of large-scale drift chamber gain. The tests are performed on-line with creation ...of the Transition Radiation Detector (TRD) for the ALICE experiment at CERN. The source is a key element of automatic scanner, and it produces X-ray photons in the energy range up to 10 keV with required intensity. The design and characteristics of the source are described.
Two special experimental facilities have been designed and produced to provide charged particle tests of the Transition Radiation Detector (TRD) prototypes and modules for the ALICE experiment at ...CERN. The first facility, comprising the scintillation and Cherenkov detectors, was applied for the TRD elements investigation with a secondary mixed electron-pion beam of the CERN proton synchrotron PS. The second one, consisting of two large-scale scintillation planes and original electronics, is under operation to trigger the 7-m long TRD supermodules on closing stand-alone trial with cosmic particles. The design and performance of both facilities are considered.
We present results on transverse momentum correlations of charged particle pairs produced in Pb
Au collisions at
158
A
GeV
/
c
at the Super Proton Synchrotron. The transverse momentum correlations ...have been studied as a function of collision centrality, angular separation of the particle pairs, transverse momentum and charge sign. We demonstrate that the results are in agreement with previous findings in scale-independent analyses at the same beam energy. Employing the two-particle momentum correlator
〈
Δ
p
t
,
i
,
Δ
p
t
,
j
〉
and the cumulative
p
t
variable
x
(
p
t
)
, we identify, using the scale-dependent approach presented in this paper, different sources contributing to the measured correlations, such as quantum and Coulomb correlations, elliptic flow and mini-jet fragmentation.
We present a measurement of e+e− pair production in central PbAu collisions at 158A GeV/c. As reported earlier, a significant excess of the e+e− pair yield over the expectation from hadron decays is ...observed. The improved mass resolution of the present data set, recorded with the upgraded CERES experiment at the CERN-SPS, allows for a comparison of the data with different theoretical approaches. The data clearly favor a substantial in-medium broadening of the ρ spectral function over a density-dependent shift of the ρ pole mass. The in-medium broadening model implies that baryon induced interactions are the key mechanism to the observed modifications of the ρ meson at SPS energy.
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