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SUMMARY:About an accuracy of ECal/MPD calibration with cosmic muons
DTSTART;VALUE=DATE-TIME:20221201T150000Z
DTEND;VALUE=DATE-TIME:20221201T151500Z
DTSTAMP;VALUE=DATE-TIME:20260719T183237Z
UID:indico-contribution-3135@cern.ch
DESCRIPTION:Speakers: Viacheslav Kulikov (NRC "Kurchatov institute")\nM.Bh
 attacharjee1\,3\, S.A.Bulychjov2\, Yu.F.Krechetov1\, V.V. Kulikov2\,\nM.A.
  Martemianov2\, M.A. Matsyuk2\, I.A. Tyapkin1\n1 Joint Institute for Nucle
 ar Research\, 141980\, Dubna\, Russia\n2 National Research Center “Kurch
 atov Institute”\, Moscow\, 123182 Russia\n3 Gauhati University\, Guwahat
 i\, Assam 781014\, India\n    In a framework of the NICA/MPD project [1]\,
  a cylindrical electromagnetic calorimeter (ECal) [2] with an internal(ext
 ernal) diameter of 3.45 (4.6) m \, a length of 6 m and a total weight of a
 bout 60 tons is under construction. The calorimeter consists of 38\,400 
 “shashlik”-type towers with 210 alternating layers of a 1.5 mm scintil
 lator and 0.3 mm lead coated with reflective paint. The shapes of the towe
 rs are of 64 types. Approximately they are truncated pyramids with a base 
 of 4x4 cm2\, height of 41 cm and vertex angles of 0.9 and 1.2 degrees in t
 he longitudinal and transverse plane relative to the cylinder axis. ECal i
 mplements the so-called projective geometry when the axes of all towers lo
 ok at one point - the intersection point of the collider beams located in 
 the center of the cylinder. Every 16 towers are combined into 2400 modules
  of 8 types. Large number of modules have been already produced [3] and te
 sted on electron beams and cosmic rays [4\,5]. In this report we discuss t
 he energy calibration procedure with cosmic muons with the main emphasis o
 n its accuracy and corrections needed for different types of the towers an
 d their orientation in space. The results are based on MC simulation and c
 omparison with the existing measurements. \n[1] The MPD Collaboration:  V.
  Abgaryan et al. «Status and initial physics performance studies         
         \n     of the MPD experiment at NICA. Eur.Phys.J.A 58 (2022) 7\, 1
 40.\n[2] V.V. Kulikov et al. ECal MPD: geometry and simulation. 2020 JINST
  15 C09017. [3] Y. Li et al. Production and quality control of NICA-MPD sh
 ashlik electromagnetic calorimeter  \n      in Tsinghua University. JINST 
 17 (2022) 04\, T04005.\n[4] V.A. Baskov et al. Electron Beam Test of the M
 PD Electromagnetic Calorimeter on the Pakhra  \n     Synchrotron. Phys.Par
 t.Nucl. 52 (2021) 4\, 663.\n[5] M. Bhattacharjee et al. Calibration of NIC
 A-MPD electromagnetic calorimeter modules with     \n     cosmic muons. 20
 20 J. Phys.: Conf. Ser. 1690 012052.\n\nhttps://indico.particle.mephi.ru/e
 vent/275/contributions/3135/
LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1
URL:https://indico.particle.mephi.ru/event/275/contributions/3135/
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