The conceptual design of the miniBeBe detector proposed for NICA-MPD

Kado, Ramón Acevedo; Hernández, Mauricio Alvarado; Ayala, Alejandro; Ayala-Torres, M.; Bietenholz, Wolfgang; Chaires, Dario; Cuautle, E.; Domínguez, I.; Guirado, Alejandro; Maldonado, I. Cortés; Maldonado, Julio; Barbosa, Eduardo Moreno; Nieto-Marín, P. A.; Salazar, Miguel Enrique Patiño; Rebolledo, Lucio; Rodrı́guez-Cahuantzi, Mario; Rodríguez-Figueroa, D.; Reyna-Ortiz, Valeria Z.; Tejeda-Muñoz, G.; Tejeda-Yeomans, María Elena; Valenzuela-Cázares, Luis; Fernández, C. H. Zepeda

doi:10.1088/1748-0221/16/02/p02002

Cited by 6 publications

(12 citation statements)

References 16 publications

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“…The resolution of the centrality determination by BeBe detector of the expected collisions at NICA is 0.05-0.1 for centralities percentages between 20% and 100%. Indeed, as previously reported in [7], BeBe compensates for the low trigger efficiency in low multiplicity proton+proton collision events given by the Fast Forward Detector (FFD) [8]. In this work, it is shown that BeBe also compensates for the decrease of the resolution of the centrality determination for peripheral collisions given by the Forward Hadron Calorimeter (FHCAL) [9] (subsection 5.3).…”

Section: Introductionsupporting

confidence: 62%

“…To study the trigger capabilities of BeBe detector two samples of 1 million events were generated using UrQMD Monte Carlo model [21,25] within MPDRoot framework [19]. We considered two reduced geometries with the closest proposed detector to the MPD interaction point, Mbb [7], FFD, and BeBe detectors. Another geometry configuration considered only Mbb and BeBe.…”

Section: Estimation Of Bebe Trigger Efficiencymentioning

confidence: 99%

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Performance of BeBe, a proposed dedicated beam-beam monitoring detector for the MPD-NICA experiment at JINR

Ayala-Torres¹,

Beltran²,

Sanchez³

et al. 2022

J. Inst.

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The Multipurpose Detector (MPD) is an experimental array, currently under construction, designed to study the nuclear matter created during the collisions that will be provided by the Nuclotron-based Ion Collider fAcility (NICA) at JINR. The MPD-NICA experiment consists of a typical array of particle detectors as those used to study heavy-ion collisions at LHC and RHIC. To increase the trigger capabilities of MPD for stage 2 of NICA operation, a detector constituted by two arrays of 80 plastic scintillator cells each located symmetrically at opposite sides of the interaction point of MPD is proposed (BeBe). Based on Monte Carlo simulations, a discussion of the potential physics performance of BeBe detector is given for triggering tasks and for the resolution in the determination of the event plane reaction and the centrality of the collisions at NICA. Also, laboratory measurements to estimate the time resolution of individual BeBe cells prototypes are presented. It is shown that a time resolution between 0.47 and 1.39 ns can be reached depending on the number of photosensors employed to collect the scintillation photons. The BeBe detector will be complementary to FFD and FHCAL forward detectors.

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Section: Introductionsupporting

confidence: 62%

Section: Estimation Of Bebe Trigger Efficiencymentioning

confidence: 99%

Performance of BeBe, a proposed dedicated beam-beam monitoring detector for the MPD-NICA experiment at JINR

Ayala-Torres¹,

Beltran²,

Sanchez³

et al. 2022

J. Inst.

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“…In this work we have shown that ITR and, therefore, the TR are not constant, that is, they depend of the energy, type of particle, the interaction point, the location of the Scorer (also the number of them [1]) and the size and geometry of the plastic scintillator. The BC-404 plastic scintillator of small size exhibits an ITR close to 2 ps, which is also independent of the number of scorers [2]. While for big size, the ITR and TR vary and in particular increase compare with a small size.…”

Section: Conclusion and Discussionmentioning

confidence: 90%

“…Finally, we obtained the fit Gaussian distribution from the set of all mean values to obtain the σ parameter, which it represents the ITR. This technique has been compared with the experiment [1] and also is used to calculate the ITR for the MiniBeBe detector (described in the Section 6 in [2]).…”

Section: Intrinsic Time Resolution Methodologymentioning

confidence: 99%

“…The plastic scintillators have been more frequently used [10,11] due to its low cost compared with crystals. In particular, the BC404 plastic scintillator is being used in the construction of a new Mexican detector [2] within the Multi Purpose Detector experiment tat the Nuclotron Ion Collider fAcility (NICA) [3] . The use of detector simulations is an important study, mainly to have a control on the physical parameters.…”

Section: Introductionmentioning

confidence: 99%

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Intrinsic time resolution and efficiency characterization for two size of BC-404 plastic scintillators studies in Geant4

Fernández,

Herrera,

Barbosa

et al. 2021

Preprint

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The time resolution (TR) is one of the most important characteristic of a detector. For the case of a scintillator, the collection of light also is important, it depends of the effective area of the photo-sensor (Scorer ). The Photomultipliers Tubes (PMTs), normally, have an effective area greater than the Silicon Photomultipliers (SiPMs), however, due to its voltage of operation, their size and cost, in some cases it can be difficult to work with them. In which case, it is preferable to use SiPMs. The value of TR also depends of the size and geometry of the scintillator, number of photo-sensors and the electronic part.In this work, we study the mean optical photon arrival time distribution (AT) to a Scorer from a SiPM of 6×6 mm 2 . We define the variation of AT as the intrinsic time resolution (ITR). In Geant4, we simulated two different geometries: square and hexagonal, for a BC-404 plastic scintillator coupled to one Scorer. The sources simulated were Sr 90 , Co 60 , Cs 137 , Na 22 and µ − of 1 GeV. It is shown that AT and ITR depends of the geometry and size of the plastic scintillator, the location of the Scorer, the incident particle and its energy. Then, the ITR and therefore the TR is not a constant for a detector. Finally, we show the relation between AT and the deposited energy by the particle incident, which are related in the experiment to the response time event of the detector and the deposited charge by the incident particle, respectively.

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Conceptual design report of the MPD Cosmic Ray Detector (MCORD)

Bielewicz¹,

Bancer²,

Barabanov³

et al. 2021

J. Inst.

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This report presents a concept of constructing a detector dedicated for detection of muons observed during measurements carried out at the MPD (Multi-Purpose Detector) detector that is currently under construction at the NICA facility, Russia, Dubna. It has been proposed to design and build an additional detector that will complement the current MPD set and increase its measurement capabilities. The main goal of this project is to provide information from cosmic muons that pass the MPD detector in both in-beam and off-beam experiments. Hence, the detector is called the MPD COsmic Ray Detector (MCORD).The conceptual design of MCORD is proposed by a Polish consortium NICA-PL comprising several Polish scientific institutions. The data from cosmic ray muons could be used as a trigger for calibration of other detection systems comprising the MPD detector. Large surface covered by the MCORD offers also possibility for efficient registration of muons generated in expanding atmospheric showers induced by distant sources. Moreover, beyond some energy threshold, observation of muons originating from decays of collision products will also be possible. In this report examples of the MCORD functionality as a part of the MPD detector are presented. The MCORD is designed as a universal, fast triggering system built as a modular reconfigurable construction. The detection system will be based on plastic scintillators equipped with wavelength shifting fibers, and silicon photomultipliers (SiPM) will be used for scintillation readout. The online analysis of received signals will be performed using digital FPGA modules. Due to the modular design, the same system (its small part) can be used for both laboratory testing of other MPD sub-detectors, and the calibration of these detectors after placing them inside the MPD in off-beam mode. The full detector will support these systems as an additional trigger, calibrator, and muon identifier during the normal operation of the MPD detector with the beam. Thanks to its unique construction, it will expand the possibilities of collecting scientific data of the MPD detector with astrophysical observations. The publication will show the assumptions of the mechanical structure and electronic systems of the planned detector. The installation site of the detector as part of the MPD detector will be described in detail. In the following, the results of simulations made in preparation for this project will be presented. In particular, simulations with the CORSIKA code present angular distributions of particles in cosmic showers in the Dubna city region. Since muons dominate the cosmic ray showers, the MPD detector response to expected cosmic muon flux was also simulated. The results provide information about the muon cut-off thresholds depending on the MPD detector composition during the installation campaign. Simulations of muon events that could be used for MPD subsystems calibration were also performed. The results shown for various configuration of MCORD detector modules will enable the estimation of the time necessary to perform such tests in the future. Simulations with UrQMD model shows the muon abundances due to beam-beam collisions. Approximately 90% of muons are created from pions, whereas the number of muons that reach the MCORD detector is 10 times greater than the number of pions. The MPD detector response was also simulated under the influence of a stream of various particles, especially muons. It shows energy dependence of muon transmission coefficient for MPD with and without ECal assembled. Assuming requirement for muon transmission above 95%, the muon cut-off thresholds are 1.6 GeV and 2.0 GeV, respectively. MCORD detector performance evaluation is also reported. In the case when we used scintillators with one fiber with a diameter of 1 mm, the time resolution of about 1.0 ns was recorded, which corresponds to the positional accuracy (σx) of 7.1 cm. The results of laboratory tests show that application of a 2 mm diameter WLS fiber instead of the previously used 1 mm diameter fiber improves the time resolution to 0.80 ns.

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The conceptual design of the miniBeBe detector proposed for NICA-MPD

Cited by 6 publications

References 16 publications

Performance of BeBe, a proposed dedicated beam-beam monitoring detector for the MPD-NICA experiment at JINR

Performance of BeBe, a proposed dedicated beam-beam monitoring detector for the MPD-NICA experiment at JINR

Intrinsic time resolution and efficiency characterization for two size of BC-404 plastic scintillators studies in Geant4

Conceptual design report of the MPD Cosmic Ray Detector (MCORD)

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