Author/Authors :
Pellegrino، نويسنده , , A and van Beuzekom، نويسنده , , M.G and van den Born، نويسنده , , E.E and Groep، نويسنده , , D.L and Hesselink، نويسنده , , W.H.A and Jans، نويسنده , , E and Kalantar-Nayestanaki، نويسنده , , N and Kasdorp، نويسنده , , W.-J and Kos، نويسنده , , J and Kruszynska، نويسنده , , M.N and Kwakkel، نويسنده , , E and van Leeuwe، نويسنده , , J.J and Mul، نويسنده , , F.A and Onderwater، نويسنده , , C.J.G an، نويسنده ,
Abstract :
Two highly segmented plastic-scintillator arrays have been developed for proton detection in electron scattering experiments. The detectors subtend solid angles of 225 and 550 msr and cover energy ranges of 50–225 and 25–165 MeV, respectively. The charge and arrival time of each photomultiplier signal are digitized by flash ADCs and temporarily stored in a dual-port memory. The readout parameters are computer controlled, tuned, and monitored. These detectors have been employed in (e, e′p) and (e, e′pp) experiments for proton emission angles greater than 30° and for luminosities up to 1036 nucleons cm−2 s−1. The singles counting rates in the scintillator elements of the first layers were about 0.5×106 particles s−1 and the trigger rate 1 MHz. The measured resolution in the excitation energy and timing spectra are 2.7% and 0.7 ns, respectively.
