Performance of BEBE-prototype: A BEam-BEam counter prototype for the - PowerPoint PPT Presentation

Performance of BEBE-prototype: A BEam-BEam counter prototype for the MPD-NICA experiment at JINR Heber Zepeda-Fern´ andez CINVESTAV-IPN XLVII International Symposium on Multiparticle Dynamics (ISMD 2017) September 11, 2017 1 / 11

Outline Introduction 1 BEam-BEam counter detector (BEBE) 2 Results 3 2 / 11

Introduction Quark-Gluon Plasma to Hadron state Figure: Phase diagram: Critical point location. Through: Dilepton study, stranges particles. SPS (CERN) studies: NICA covers the gap. 3 / 11

Introduction Nuclotron-based Ion Collider fAcility (NICA) Located in Dubna, Russia. Figure: NICA complex. The Baryonic Matter at Nuclotron (BM@N). The Spin Physics Detector (SPD). The Multi-Purpose Detector (MPD). 4 / 11

Introduction The MPD complex Time Projection Chamber (TPC). Inner Tracker (IT). Time of Flight (TOF). Electromagnetic Calorimeter. Zero Degree Calorimeter. Fast Forward Detector (FFD). Magnetic solenoid. 5 / 11

BEam-BEam counter detector (BEBE) BEam-BEam counter detector (BEBE or Beam Monitoring Detector (BMD)) The BMD: An ambitious detector: Scintillator detector: Bc404. Increase the pseudorapidity region: 1 . 69 ≤ | η BMD | ≤ 4 . 36. Optimization of events: Plane resolution. Centrality and Interaction point location.. Multiplicity reference estimator. Trigger system. Beam monitoring. Discriminate centrality events from background and beam-gas interaction. Determinate the absolute cross section of reaction process. Time resolution: 50 ps (arrival time scintillator-photons + electronic time). 6 / 11

BEam-BEam counter detector (BEBE) BEam-BEam counter detector (BEBE or Beam Monitoring Detector (BMD)) The BMD: An ambitious detector: BMD BMD-C BMD-A TPC TPC Z4 Z1 Z2 Z3 -2 m 2 m Geometrical center of MPD 7 / 11

Results Location of the interaction point The goal of this work is to find the arrival time distribution and resolution. Collisions in/out BMD-A and BMD-C 15 10 5 ns 0 Inside TA+TC -5 TA-TC Outside -10 TA+TC TA-TC -15 -200 -150 -100 -50 0 50 100 150 200 cm Figure: Relation between the arrival time ( T A and T C ) to BMD with interaction point position . Arrival time resolution: ∆ σ = | σ A − σ C | = 57 . 982 ± 0 . 509 ps. 8 / 11

Results Finding the geometry to obtain 50 ps Geant4 simulation (yellow square = APD): a) Figure: Size: 10 cm high. 133 . 579 ± 21 . 803 ps ≤ ∆ σ ≤ 226 . 409 ± 37 . 821 ps. b) Figure: Size: 5 cm high. ∆ σ = 12 . 908 ± 4 . 762 ps. We are close! 9 / 11

Results Conclusions BMD will be an important detector for MPD. BMD will be able to find the point interaction location. The geometry to obtain the 50 ps will be found it in few time. 10 / 11

Results MEMEBERS of MeXNICA: M. en C. Heber Zepeda Fern´ andez. Lic. Luis Valenzuela Cazarez. Dr. Alejandro Ayala. Dr. Luis Manuel Monta˜ no Zetina. Dra. Mar´ ıa Elena Tejeda Yeomas. Dr. Mario Rodr´ ıguez Cahuantzi. Dr. Pedro Gonz´ alez Zamora. Dra. Isabel Dom´ ınguez. 11 / 11