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ISSN - 01689002, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2016, vol. 824, p. 362-364

New electronics of the spectrometric channel for the SND detector electromagnetic calorimeter

Achasov M. N., Aulchenko V. M., Bogdanchikov A. G., Druzhinin V. P., Golubev V. B., Korol A. A., Koshuba S. V., Kovrizhin D. P., Serednyakov S. I., Surin I. K., Tekutev A. I., Usov Yu V.

© 2015 Published by Elsevier B.V. The Spherical Neutral Detector (SND) is intended for study of electron-positron annihilation at the VEPP-2000 collider (BINP, Novosibirsk) in the center-of-mass energy region below 2 GeV. The main part of the detector is a three-layer electromagnetic calorimeter based on NaI(Tl) crystals. The physics program of the SND experiment includes a high statistics study of neutron-antineutron production near threshold, for which time measurements in the calorimeter are required. In this paper we describe new shaping and digitizing calorimeter electronics, which allow to reach a time resolution of about 1 ns for 100 MeV signal and an amplitude resolution of about 250 keV.