Design and construction of the BESIII detector

Abstract

This paper will discuss the design and construction of BESIII [1], which is designed to study physics in the τ-charm energy region utilizing the new high luminosity BEPCII double ring e + ecollider [2]. The expected performance will be given based on Monte Carlo simulations and results of cosmic ray and beam tests. In BESIII, tracking and momentum measurements for charged particles are made by a cylindrical multilayer drift chamber in a 1 T superconducting solenoid. Charged particles are identified with a time-of-flight system based on plastic scintillators in conjunction with dE/dx (energy loss per unit pathlength) measurements in the drift chamber. Energies of electromagnetic showers are measured by a CsI(Tl) crystal calorimeter located inside the solenoid magnet. Muons are identified by arrays of resistive plate chambers in the steel magnetic flux return. The level 1 trigger system, Data Acquisition system and the event filter system based on networked computers will also be described.

Observation of a Neutral Charmoniumlike StateZc(4025)0inAblikim1, Ачасов2, Ai3 et al. 2015Phys. Rev. Lett.Self Cite794410View full textAdd to dashboardCite

“…We denote the investigated final state products as [24] at the BEPCII storage ring [25]. BESIII is a cylindrically symmetric detector which, from inner to outer parts, consists of the following components: a helium-gas based multilayer drift chamber (MDC), a timeof-flight counter (TOF), a CsI(Tl) crystal electromagnetic calorimeter (EMC), a 1-T superconducting solenoid magnet and a nine-layer resistive-plate-chamber-based muon chamber system.…”

Studyof h[sub c]([sup 1]P[sub 1]) at BESIII

“…BESIII/BEPCII [8] is the major upgrade of BESII/BEPC [9]. The BESIII detector is designed to study hadron spectroscopy and τ-charm physics [10].…”

Measurement of integrated luminosity and center-of-mass energy of data taken by BESIII at

“…To study the Y (2175), a dedicated data set was collected with the BESIII detector [11] at the BEPCII collider in 2015 at the center-of-mass energy ( √ s) of 2.125 GeV, which is in the vicinity of the peaking cross sections for e + e − → φππ and e + e − → φf 0 (980) decays reported by BaBar [2,3] and Belle [5].…”

“…2 The BESIII detector BESIII [11] is a general purpose detector, which is located at the BEPCII facility, a double-ring e + e − collider with a peak luminosity of 10 33 cm −2 s −1 at a center-ofmass energy of 3.773 GeV. The BESIII detector covers 93% of the solid angle around the collision point and consists of four main components: 1) A small-cell, heliumbased main drift chamber (MDC) with 43 layers providing an average single-hit resolution of 135 µm, and charged-particle momentum resolution in a 1 T magnetic field of 0.5% at 1 GeV/c; 2) A Time-Of-Flight system (TOF) for particle identification composed of a barrel and two end-caps.…”