[en] A validation of the hydrodynamic characteristics of the coolant loop of a high-temperature gas-cooled reactor at low power in a power-generating facility using a turbo-machine conversion in a Brayton cycle is given. The validation is accomplished using diagnostics of models of a coolant loop, numerical modeling of the hydrodynamics, heat-and-mass transfer in models with more accurate three-dimensional CFD codes. Relations for ensuring tangential uniformity of the coolant velocity distribution near the core shell and at the entry into the distributing manifold are obtained. A distributing manifold geometry securing a uniform coolant flow distribution over core cooling tracts at low hydraulic resistance is proposed. Data are obtained on the velocity and temperature distributions in fuel pins spaced by a wire winding.

[en] The conception of a transportable small power plant based on a high-temperature gas-cooled nuclear reactor and a gas-turbine plant for supplying heat and electricity to settlements in the Far North and Siberia is presented. An open-loop energy conversion scheme with a Brayton cycle making possible quick start-up and leveling the fluctuations due to routine maintenance work or single failure of the main equipment, in the power delivery to the consumer is studied.

[en] A neutrino--proton scattering experiment has been performed at Fermilab by using a wide-band horn-focused neutrino beam and the 15-ft bubble chamber filled with hydrogen. For the inclusive reaction ν/sub μ/ + p → μ^- + hadrons, the mean value of Q² is found to increase linearly with energy, as is expected from Bjorken scaling, and a fit to the data gives < Q²> = (0.18 +- 0.01) E. The distribution in the Bjorken scaling variable x shows evidence for deviations from predictions based on electron-scattering data and the quark-parton model

[en] Data are presented on charged-current inclusive strange-particle production in 10--200-GeV/c vp interactions. Final states with V⁰ decay topologies are reported: K/subs/⁰, Λ⁰(Σ⁰), Lambda-bar⁰(Sigma-bar⁰). Neutrino energy, charged multiplicity, Q², W, x, and y distributions are shown. The corrected relative V⁰ production rate is 0.16+-0.03 per event. The first example of neutrino-induced antibaryon (Lambda-bar) production is observed. The 90%-confidence upper limit on ΔS=-ΔQ inclusive Λ production is 0.036 of all charged-current vp interactions above 10 GeV/c

[en] Results from the Fermilab 15-ft bubble chamber on the charged-particle multiplicity distributions produced in high-energy charged-current neutrino-proton interactions are presented. Comparisons are made to γp, ep, μp, and inclusive pp scattering. The mean hadronic multiplicity < n/subc/> appears to depend only on the mass of the excited hadronic state, independent of the mode of excitation. A fit to the neutrino data gives < n/subc/>= (1.09+-0.38) +(1.09+-0.03)lnW²

[en] The Fermilab 15-ft bubble chamber filled with hydrogen was exposed to a broad-momentum-band horn-focused neutrino beam produced by 300-GeV interacting protons. The selection procedure to choose a charged-current neutrino event sample is discussed. Fewer than three percent of the events are due to neutral hadron interactions. We present and experimentally test a method that can be used to identify the muon, estimate the incident neutrino energy, and eliminate most neutral-current interactions from the charged-current sample. Above 10 GeV the method produces an approximately 86% pure sample of charged-current events with an error in energy estimation of the order of 8% over a broad region of the data. In addition we establish experimentally several important properties of high-energy charged-current neutrino interactions. The hadrons are produced in a jet, the individual particles having sharply limited momenta perpendicular to the hadronic axis. The jet structure is maintained with constant properties to very high values of Q² and hadronic mass. The fraction of energy going into invisible particles is moderate, consistent with that expected. The average number of neutral pions rises linearly with the average number of charged particles

[en] The Beam Diagnostics system for the U70-UNK Transfer Line has a strong controls component. The system allows to measure the profile, halo, losses, and intensity of the beam and to calculate the efficiencies of ejection, injection and transfer. After an outline of the detectors, the paper concentrates on the data handling. ((orig.))

[en] The main idea of the Toolkit is to have appropriate standardized hardware and software tools to allow the equipment groups to compose the necessary equipment controllers and develop the corresponding application software. This idea is implemented in the UNK power supply control toolkit, containing a collection of hardware and software modules which, by appropriate configuration, allow the connection of most of the UNK power converters to the upper part of the control system in a standard manner. This paper presents the Toolkit and its function in the creation of the UNK control system, hardware modules for the controllers and describes the first steps in the practical realization of the Toolkit at IHEP. ((orig.))