In the framework of investigation of meson photo-production on proton and neutron in a deuterium target at the GRAAL experiment, we present a method to identify the vertex of interaction when in reaction products there are at least two charged particles, by the information provided by the cylindrical multiwire proportional chambers. By this device, we are able to obtain the direction of charged particles that leave the target after a photo-production reaction. For each charged particle, the device provides the coordinates of two points in the laboratory reference system, and the z-axis represents the beam direction. We calculate the trajectory of each charged particle and its cross point, representing the vertex of the reaction.
G. Mandaglio, M. Manganaro, G. Giardina, V. Bellini, A. Giusa, F. Mammoliti, C. Randieri, G. Russo, M. L. Sperduto, C. Sutera, L. Casano, A. D’Angelo, R. Di Salvo, A. Fantini, D. Franco, D. Moricciani, C. Schaerf, V. Vegna, P. Levi Sandri, B. Girolami, F. Ghio, G. Gervino, J. P. Bocquet, A. Lleres, D. Rebreyend, F. Renard, A. S. Ignatov, A. M. Lapik, A. N. Mushkarenkov, V. G. Nedorezov, N. V. Rudnev, A. A. Turinge (2009).
Radiation Effects and Defects in Solids – May/June 2009, Vol. 164, Issues 5-6, pp. 325-329, ISSN: 1042-0150, doi: 10.1080/10420150902809551.
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