Spherical Neutral Detector for VEPP-2M collider
M.N.Achasov, V.M.Aulchenko, S.E.Baru, K.I.Beloborodov, A.V.Berdyugin,, A.G.Bogdanchikov, A.V.Bozhenok, A.D.Bukin, D.A.Bukin, S.V.Burdin, T.V.Dimova,, S.I.Dolinsky, A.A.Drozdetsky, V.P.Druzhinin, M.S.Dubrovin, I.A.Gaponenko,, V.B.Golubev, V.N.Ivanchenko, A.A.Korol, S.V.Koshuba
TL;DR
The paper describes the design, components, and performance of the Spherical Neutral Detector (SND) used at VEPP-2M collider for studying electron-positron annihilation up to 1.4 GeV.
Contribution
It introduces the detailed design and performance characteristics of the SND, including its calorimeter, drift chambers, and muon system, for the first time.
Findings
Successful operation at VEPP-2M collider
High granularity calorimeter with 1632 NaI(Tl) crystals
Effective data acquisition and processing system
Abstract
The Spherical Neutral Detector (SND) operates at VEPP-2M collider in Novosibirsk studying e^+e^- annihilation in the energy range up to 1.4 GeV. Detector consists of a fine granulated spherical scintillation calorimeter with 1632 NaI(Tl) crystals, two cylindrical drift chambers with 10 layers of sense wires, and a muon system made of streamer tubes and plastic scintillation counters. The detector design, performance, data acquisition and processing are described.
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