Научная группа: CBM Collaboration
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The Projectile Spectator Detector for measuring the geometry of heavy ion collisions at the CBM experiment on FAIR
(2019) Karpushkin, N.; Finogeev, D.; Golubeva, M.; Guber, F.; Morozov, S.
© 2018 Elsevier B.V. The Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) is aimed to explore the QCD phase diagram in the region of high baryon densities. The Projectile Spectator Detector (PSD) is the forward hadron calorimeter that will be used in the CBM to measure the event centrality as well as the reaction plane orientation in heavy-ion collisions in the beam energy range of 2–11 AGeV with beam interaction rates up to 10 MHz. The supermodule consisting of 9 modules has been assembled to explore the performance of the PSD. Its response has been studied with proton beams in the momentum range 2–10 GeV/c at the CERN Proton Synchrotron (PS) T9 and T10 beam lines. For the first time, the energy resolution and the linearity of the response have been measured at such low energies. The PSD operation under radiation conditions at the CBM, as well as the results of one PSD module measurements with irradiated photodetectors are discussed.
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The very forward hadron calorimeter PSD for the future CBM@FAIR experiment
(2019) Mikhaylov, V.; Kugler, A.; Kushpil, V.; Svoboda, O.; Morozov, S.; Selyuzhenkov, I.
The Projectile Spectator Detector (PSD) of the CBM experiment at the future FAIR facility is a compensating lead-scintillator calorimeter designed to measure the energy distribution of the forward going projectile nucleons and nuclei fragments (reaction spectators) produced close to the beam rapidity. The detector performance for the centrality and reaction plane determination is reviewed based on Monte-Carlo simulations of gold-gold collisions by means of four different heavy-ion event generators. The PSD energy resolution and the linearity of the response measured at CERN PS for the PSD supermodule consisting of 9 modules are presented. Predictions of the calorimeter radiation conditions at CBM and response measurement of one PSD module equipped with neutron irradiated MPPCs used for the light read out are discussed.
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Physics Performance Studies for Anisotropic Flow Measurements with the CBM Experiment at FAIR
(2020) Klochkov, V.; Golosov, O.; Kashirin, E.; Selyuzhenkov, I.; Голосов, Олег Владимирович
© 2020, Pleiades Publishing, Ltd.Abstract: The Compressed Baryonic Matter experiment (CBM) at FAIR aims to study the area of the QCD phase diagram at high net baryon densities and moderate temperatures using collisions of heavy ions at center-of-mass energies of a few GeV per nucleon. Anisotropic transverse flow is among the key observables to study the properties of matter created in such collisions. The CBM performance for anisotropic flow measurements is studied with Monte-Carlo simulations using collisions of gold ions at lab momentum of 10A GeV/c employing UrQMD event generator. Different combinations of PSD module groups are used to investigate the possible systematic biases in flow measurement and to study the effects of detector azimuthal non-uniformity. The resulting performance of the CBM for flow measurements is demonstrated for directed flow of charged pions as a function of rapidity and transverse momentum.
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Probing dense QCD matter in the laboratory - The CBM experiment at FAIR
(2020) Senger, P.
© 2020 IOP Publishing Ltd.The 'Facility for Antiproton and Ion Research' (FAIR) in Darmstadt will provide unique research opportunities for the investigation of fundamental open questions related to nuclear physics and astrophysics, including the exploration of QCD matter under extreme conditions, which governs the structure and dynamics of cosmic objects and phenomena like neutron stars, supernova explosions, and neutron star mergers. The physics program of the Compressed Baryonic Matter (CBM) experiment is devoted to the production and investigation of dense nuclear matter, with a focus on the high-density equation-of-state (EOS), and signatures for new phases of dense QCD matter. According to the present schedule, the CBM experiment will receive the first beams from the FAIR accelerators in 2025. This article reviews promising observables, outlines the CBM detector system, and presents results of physics performance studies.
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The readout system of the CBM Projectile Spectator Detector at FAIR
(2020) Guber, F.; Karpushkin, N.; Makhnev, A.; Serebryakov, D.; Finogeev, D.; Morozov, S.
© 2020 IOP Publishing Ltd and Sissa Medialab.The Projectile Spectator Detector (PSD) is a sampling lead/scintillator forward hadron calorimeter with transverse and longitudinal segmentation and with MPPC photodetectors light readout. The PSD will be used at the Compressed Baryonic Matter (CBM) experiment at FAIR to measure the nucleus-nucleus collision centrality and orientation of the reaction plane. The CBM experiment will use a free-streaming data acquisition system (DAQ), which requires a coordinated time stamping of data in all sub-systems. To test prototypes of the CBM sub-detectors, front-end electronics (FEE) and readout electronics at high heavy ion beam rates the "mini CBM"(mCBM) installation has been assembled at SIS18 accelerator in GSI, Darmstadt, Germany in the framework of the FAIR Phase-0 program. A single "mini PSD"(mPSD) module has been integrated into the mCBM experiment. Details of the mPSD readout electronics and the first results of the data acquisition, processing and transmission within the common synchronized mCBM data transport system taken during the first beam tests are shown.
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
Описание
Коллаборацией CBM (сжатая барионная материя) в FAIR/GSI в Дармштадте.