Nov 4 – 8, 2019
Adelaide Convention Centre
Australia/Adelaide timezone

Time measurement with the SND electromagnetic calorimeter

Nov 5, 2019, 5:15 PM
Riverbank R5 (Adelaide Convention Centre)

Riverbank R5

Adelaide Convention Centre

Oral Track 1 – Online and Real-time Computing Track 1 – Online and Real-time Computing


Natalya Melnikova (Budker Institute of Nuclear Physics (RU))


The SND is a non-magnetic detector deployed at the VEPP-2000 e+e- collider (BINP, Novosibirsk) for hadronic cross-section measurements in the center of mass energy region below 2 GeV. The important part of the detector is a three-layer hodoscopic electromagnetic calorimeter (EMC) based on NaI(Tl) counters. Until the recent EMC spectrometric channel upgrade, only the energy deposition measurement in counters was possible. A new EMC signal shaping and digitizing electronics based on FADC allowed us to obtain also the signal arrival time. The new electronics and supporting software, including digitized signal processing algorithms, are now used for data taking in the ongoing experiment. We discuss the amplitude and time extraction algorithms, the new system performance on experimental events and how this time measurement can be applied to physics analysis.

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Primary authors

Natalya Melnikova (Budker Institute of Nuclear Physics (RU)) Aleksandr Korol (Budker Institute of Nuclear Physics (RU))

Presentation materials