Research output: Contribution to journal › Article › peer-review
Upgrade of the SND electromagnetic calorimeter. / Achasov, M. N.; Bogdanchikov, A. G.; Druzhinin, V. P. et al.
In: Journal of Instrumentation, Vol. 15, No. 6, C06011, 05.06.2020.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Upgrade of the SND electromagnetic calorimeter
AU - Achasov, M. N.
AU - Bogdanchikov, A. G.
AU - Druzhinin, V. P.
AU - Korol, A. A.
AU - Kovrizhin, D. P.
AU - Melnikova, N. A.
AU - Serednyakov, S. I.
AU - Surin, I. K.
AU - Tekut'Ev, A. I.
AU - Usov, Yu V.
AU - Zhulanov, V. V.
N1 - Publisher Copyright: © 2020 IOP Publishing Ltd and Sissa Medialab. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2020/6/5
Y1 - 2020/6/5
N2 - Current status and last results of the Spherical Neutral Detector (SND) calorimeter upgrade are described. The main part of SND detector is a three-layer spherical NaI(Tl) electromagnetic calorimeter (EMC). The total thickness of NaI(Tl) in the calorimeter is 35 cm. The vacuum phototriodes (VPT) are used as photosensitive devices for the calorimeter counters. The quantum efficiency of VPT is about 15%, the average gain is 10, and the light collection efficiency is about 10%. New spectrometric channel of EMC was designed and implemented. It consists of a NaI(Tl) crystal, a vacuum phototriode, a charge-sensitive preamplifier a shaper and digitizing modules. The digitization is performed by 6 ADCs AD9228BCPZ-40 (4 channel, 12 bits, 40 MBPS) and the data go in serial form to the SoC Xilinx Zynq-7000. This SoC is basically a combination of FPGA programmable logic and ARM processor. The special algorithm for signal waveform processing was developed to determine time of flight and amplitude with high time (1 ns) and amplitude (250 keV) resolution. The algorithm is based on the invariability of the signal waveform. The waveform calibration procedures are developed and implemented. Successful data taking run was performed with upgraded EMC in 2019.
AB - Current status and last results of the Spherical Neutral Detector (SND) calorimeter upgrade are described. The main part of SND detector is a three-layer spherical NaI(Tl) electromagnetic calorimeter (EMC). The total thickness of NaI(Tl) in the calorimeter is 35 cm. The vacuum phototriodes (VPT) are used as photosensitive devices for the calorimeter counters. The quantum efficiency of VPT is about 15%, the average gain is 10, and the light collection efficiency is about 10%. New spectrometric channel of EMC was designed and implemented. It consists of a NaI(Tl) crystal, a vacuum phototriode, a charge-sensitive preamplifier a shaper and digitizing modules. The digitization is performed by 6 ADCs AD9228BCPZ-40 (4 channel, 12 bits, 40 MBPS) and the data go in serial form to the SoC Xilinx Zynq-7000. This SoC is basically a combination of FPGA programmable logic and ARM processor. The special algorithm for signal waveform processing was developed to determine time of flight and amplitude with high time (1 ns) and amplitude (250 keV) resolution. The algorithm is based on the invariability of the signal waveform. The waveform calibration procedures are developed and implemented. Successful data taking run was performed with upgraded EMC in 2019.
KW - Calorimeter methods
KW - Calorimeters
UR - http://www.scopus.com/inward/record.url?scp=85086985464&partnerID=8YFLogxK
U2 - 10.1088/1748-0221/15/06/C06011
DO - 10.1088/1748-0221/15/06/C06011
M3 - Article
AN - SCOPUS:85086985464
VL - 15
JO - Journal of Instrumentation
JF - Journal of Instrumentation
SN - 1748-0221
IS - 6
M1 - C06011
ER -
ID: 24603121