Yd. Aleshin et al., TECHNIQUE FOR SEARCHING FOR AND RECONSTRUCTION OF NEUTRINO INTERACTIONS IN THE EMULSION TARGET OF THE SCAP SPECTROMETER, Instruments and experimental techniques, 40(1), 1997, pp. 36-42
A vertex-localization algorithm for the neutrino-interaction in nuclea
r emulsion is described. Emulsion is used as a detector-target in the
hybrid SCAP spectrometer with a streamer chamber (SC) as a track detec
tor. As has been shown, with the SC it is possible to measure momenta
with an accuracy sigma(p)/p congruent to 7% and track slopes in the ho
rizontal and vertical SC planes with the accuracies sigma(phi) congrue
nt to 17 mrad and sigma(lambda) congruent to 20 mrad, respectively. Un
der these conditions, the algorithm under consideration provides the v
ertex localization with an accuracy sigma(y) = 700 mu m, sigma(z)= 120
0 mu m, and sigma(x) = 1700 mu m. This accuracy is sufficient for the
efficient search for the vertex in the emulsion layers. The procedure
of searching for the vertex is described.