11 research outputs found

    The STAR experiment at the relativistic heavy ion collider

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    RF-POWER UPGRADE SYSTEMS WITH ENERGY COMPRESSION FOR ELECTRON LINACS

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    ms classification and researching the questions on perspectivity and expediency of their use as the RF-feed sources for electron linacs (and, in general case, not only for electron). The present report is devoted to classification of the RFenergy compression systems (ECS), that may be used as the RF-feed sources for electron linacs. The classification scheme of ECS is shown on fig. 1. As far as the working principle of each particular system is basically determined by an energy storage element used, from this point if view all systems can be divided into three groups: a) the systems with energy storage in cavities; b) the systems with energy storage in DL; c) the systems with energy storage in combined storing elements. The first group concern ECS, in which the RF-field energy is accumulated in a high-quality-factor cavity and the output pulse is formed at the expense of a wave, emitted from a cavity. In systems of the second group the RF-energy is accumulated in DL, and the outpu

    Transmutation of Nuclear Materials Can Be Carried Out By Thermal Neutron Capture Reactions, By Spallation Type Reactions Or Via Photonuclear Reactions Caused By High-Energy

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    e reactor; production of nuclear fuel in breeders; the adoption of the nuclear reactors with a feedback loop around reactivity and so on. But the ideal fuel cycle can not be maintained in reactor-type nuclear plants only in consequence of the following circumstances: -It is impossible to transmutate Cs 137 and Sr 90 which define the residual activity of the nuclear waste in general; -The most perspective fuel cycles U 238 - Pu 239 and Th 232 - U 233 are characterized by the very low yield of delayed neutrons and it is impossible to supply nuclear safety of these cycles by standard methods; -Stabilization of reactivity is maintained by replacing of regulation rods and something can possibly seize. The problem of the "ideal" fuel cycle can be solved by using the external neutron source and by going to the conception of the subcritical blanket of the reactor. Under Keff

    The STAR time projection chamber

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