Hardware-Software Complex for Measurement of Energy and Angular Distributions of Charged Particles Formed in Nuclear Rea
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ERING DESIGN OF NUCLEAR PHYSICS EQUIPMENT
Hardware-Software Complex for Measurement of Energy and Angular Distributions of Charged Particles Formed in Nuclear Reactions O. P. Vikhlyantsev*, L. N. Generalov, A. V. Kuryakin, I. A. Karpov, N. E. Gurin, A. D. Tumkin, and S. V. Fil’chagin Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics, pr. Mira 37, Sarov, Nizhny Novgorod oblast, 607188 Russia *e-mail: [email protected] Received November 11, 2016
Abstract—A hardware-software complex for measurement of energy and angular distributions of charged particles formed in nuclear reactions is presented. Hardware and software structures of the complex, the basic set of the modular nuclear-physical apparatus of a multichannel detecting system on the basis of ΔE–E telescopes of silicon detectors, and the hardware of experimental data collection, storage, and processing are presented and described. Keywords: ΔE–E telescope, scattering chamber, modular nuclear-physical apparatus, hardware DOI: 10.1134/S1063778817090150
INTRODUCTION Studies of the interaction of charged particles with nuclei of lithium, beryllium, and boron are still of considerable scientific and practical interest. For that purpose, a hardware-software complex for measurement of energy and angular distributions of charged particles formed in nuclear reactions has been developed at the beams (p, d, t) of the EGP-10 accelerator [1]. The complex was developed with use of a hemispherical vacuum scattering chamber (Fig. 1) where earlier (in the 1990s) large-scale measurements of differential cross sections of two-particle reactions proceeding with interaction of a deuteron with the nucleus of 9Be [2–4]: data for 9Be(d,d0), 9Be(d,p0,p1,p2+3,p4+5), 9Be(d,t ), 9Be(d,α ), 9Be(d,x)10Be reactions are pre0 0,1 sented in EXFOR data base. In the energy interval of incident deuterons from 3 to 11 MeV, the results of these measurements are still the most comprehensive in the world and are used (via the library SABA [5]) in various evaluations. The measurements are demanded for extracting spectroscopic information and obtaining optical potentials. However, these measurements were performed by the method where spectra of charged particles were registered without separation into types, resulting in loss of spectrometric information. As a consequence, some important multiparticle reaction channels were left uninvestigated. Because of this, the created complex was developed with use of the method in which the well-known iden-
tification technique of charged particles is applied— ΔЕ–Е. It is based on the simultaneous measurements of detected particle kinetic energy and specific energy losses. Most plainly and compactly, this method is implemented in silicon semiconductor detectors, where two detectors are usually used. In the first detector, referred to as the ΔЕ detector, the particle loses some of its energy. The main portion of kinetic energy is registered in the second detector, referred to as the E detector. These detectors usually
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