Spherical Neutral Detector (SND) is a detector for particle physics experiments, successor of the Neutral Detector (ND),[1] created by the team of physicists in the Budker Institute of Nuclear Physics (BINP), Novosibirsk, Russia. There are three major periods in evolution of the SND experiment;
Previous experiment with ND[3] (predecessor of SND) has shown that the e+e− annihilation in the final states with neutral particles in the energy range 2E=0.4-1.4 GeV is mediated by the processes which need to be studied in more details. In particular,
This physics can be studied with dedicated detector at higher statistics. For this purpose the SND was constructed with many improvements relative to ND;
Experimental program of the SND is presented in Ref.[5] and consists of items as follow.
The SND and its upgraded version are described in Refs.[5] and,[2] respectively. The detector design is illustrated in the R-θ view and 3-D plot of the NaI(Tl) calorimeter segmentation. Unique features of the SND and its sensitivity to the neutral particles are defined by the state-of-art NaI(Tl) calorimeter.
Data collected in the SND experiment from 1995 to 2000 corresponds to the integrated luminosity 30 pb−1 spread in the energy range 2E=0.4-1.4 GeV. Review of results of this experiment is presented in Refs. [6] and .[7] Results are included in the PDG Review.[8] Complete list of publications from SND also covers recent results of the experiment in the energy range 2E=1.0-2.0 GeV started in 2009.
SND experiment record on INSPIRE-HEP