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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:41 |
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Conference: Bucharest University Faculty of Physics 2023 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
An innovative architecture of Multi-Strip Multi-Gap Resistive Plate Counters (MSMGRPCs) for the inner zone of the Time-of-Flight system of the CBM experiment
Authors:
Daniel DOROBANȚU (1,2), Mariana PETRIȘ (1), Mihai PETROVICI (1,2)
Affiliation:
1) Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering -Hadron Physics Department;
2) University of Bucharest, Faculty of Physics.
E-mail
daniel.dorobantu@nipne.ro
Keywords:
Gaseous detectors, Muti-Strip, Multi-Gap RPCs, high counting rate, ageing
Abstract:
Studying the phase diagram of strongly interacting matter predicted by Quantum Chromodynamics (QCD), understanding its phase transitions and searching for its critical points represents the fundamental motivation behind all the heavy-ion experiments at relativistic and ultra-relativistic energies.
While ALICE (A Large Ion Collider Experiment) experiment using the highest energy accessible at LHC (Large Hadron Collider) studies the phase diagram
of QCD at very high temperatures and vanishing baryonic chemical potential, trying to probe cosmological scenarios for the expanding Universe, a few microseconds after Big Bang, understanding the phase diagram at high baryonic chemical potential and moderate temperature, characteristic for the inner core of the neutron stars requires a new generation of heavy-ion experiments. At the future fixed target Compressed Baryonic Matter (CBM) experiment at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt using Au-Au collisions at centre of mass energies √(s_NN )=4.9 GeV at SIS100 accelerator, nuclear baryonic matter at densities of 5-7 times higher than the normal nuclei is produced. Multi-differential analysis of the rare diagnostic probes requires huge statistics. Therefore, the CBM experiment is designed to run at interaction rates up to 10 MHz for Au-Au collisions and at 8 meters from the target, at the low polar angles covered by the experiment, high particle densities with rates up to 4·10^4 particles/sec·cm2 are expected. Charged hadrons identification will be provided by the Time-of-Flight (ToF) system based on Multi-gap Resistive Plate Counters (MRPC) and also using the momentum information of the particles measured with a tracking system placed inside the magnetic field. In order to cope with such an unprecedented counting rate without deteriorating their performance over the whole lifetime of the experiment which is foreseen to run for 2 months a year for 10 years, a new generation of detectors has to be developed. Completely new architectures of the MSMGRPCs with different granularities for the inner zone of the CBM-ToF system will be presented.
Acknowledgement:
This work was carried out under the contracts sponsored by the Romania Ministry
of Research, Innovation and Digitalization: CBM FAIR-RO (via IFA Coordination Agency) and the Nucleus Program.
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