Fluxes and spectral indices of rare and abundant cosmic ray nuclei according to the NUCLEON space experiment

In this paper the dependence of the spectra of cosmic ray nuclei on the charges of nuclei was studied, according to the data of the NUCLEON space experiment. First, we studied the dependence of the spectral index of magnetic rigidity spectra on the charge for abundant nuclei. Secondly, for the charge range $Z=9\div20$, the differences in the total spectra of rare odd and abundant even nuclei were studied. Using the GALPROP package, the inverse problem of CR propagation from a source (near supernova) to an observer was solved, a component-by-component spectrum in the source was reconstructed, and it was shown that a systematic change in the spectral index in the source exist. It is supposed that this change may be interpreted as incomplete ionization of cosmic rays at the stage of acceleration in the supernova remnant shock. The ratio of the total spectra of magnetic rigidity for low-abundance odd and abundant even nuclei from the charge range $Z=9\div20$ is obtained, and it was shown that the spectra of odd rare nuclei are harder than the stpectra of abundat even nuclei in the rigidity range 300--10000~GV.Comment: 7 pages 4 figures, accepted in Bulletin of the Russian Academy of Sciences: Physics V.87(7), 202

Performance of the Scintillator System Prototype of the NUCLEON Space Experiment

Abstract The NUCLEON space experiment has been proposed to perform direct measurements of CR energy spectrum and composition up to E ∼ 10 15 eV. The NUCLEON detector consists of layers of different detectors: scintillator detectors with WLS fibers and silicon pad and microstrip ones. The results of beam and space qualification tests of the scintillator detectors are presented

The OLVE-HERO Calorimeter Prototype Beam Test at CERN SPS

A project of the OLVE-HERO space detector for measurement of the cosmic rays in the range 10$^{12}$–10$^{16}$ eV is proposed. It will include a large ionization-neutron 3D calorimeter with a high granularity and geometric factor of ~16 m$^{2}$ sr. The main OLVE-HERO detector is expected to be an image calorimeter with boron loaded plastic scintillator and a tungsten absorber. Such a calorimeter allows to measure an additional neutron signal that should improve the detector energy resolution and also the rejection power between electromagnetic and nuclear components of cosmic rays. Improvement by factor 30–50 is expected. The OLVE-HERO detector prototype was designed and tested at SPS CERN beam during Pb ion run in 2018. Test results and the corresponding Monte-Carlo simulation are presented

Evolution of the GPGP/TAEMS domain-independent coordination framework. Autonomous Agents and MultiAgent Systems

ABSTRACT: The GPGP/TAEMS domain-independent coordination framework for small agent groups was first described almost ten years ago and then more fully detailed in an ICMAS95 paper. In this paper, we discuss the evolution of this framework over the last six years motivated by its use in a number of applications, including: information gathering and management, intelligent home automation, coordination of concurrent engineering activities, distributed situation assessment, and hospital scheduling. First, we review the basic architecture of GPGP and then present extensions to the TAEMS domainindependent representation of agent activities. We next describe extensions to GPGP that permit the representation of situation-specific coordination strategies and social laws as well as making possible the use of GPGP in large agent organizations. Additionally, we discuss a more complex view of commitments that takes into account uncertainty i n commitments. We then present new coordination mechanisms for use in resource sharing and contracting, and more complex coordination mechanisms that use a cooperative search among agents to find appropriate commitments. We conclude with a discussion of future research directions

The OLVE-HERO Calorimeter Prototype Tests at Heavy Ion Beams of CERN SPS

A project of the OLVE-HERO space detector is proposed for CR measurement in the range of 10$^{12}$–10$^{16}$ eV and will include a large ionization-neutron 3D calorimeter with a high granularity and geometric factor of ~16 m$^{2}$ sr. The main OLVE-HERO detector is expecte to be image calorimeter of a boron loaded plastic scintillator with a tungsten absorber. Such a calorimeter allows to measure an additional neutron signal which will improve the energy resolution of the detector. More importantly, the rejection power between electromagnetic and nuclear CR components will be increased by factor 30–50 in the whole energy range. The boron loaded scintillator detector prototype was designed and tested at the H8 beam test area at CERN SPS during Pb ion run in 2016 and Xe ion run in 2017. The results of the beam tests and the corresponding Monte-Carlo simulation are presented