446 research outputs found

    Enhanced Optical Cooling of Ion Beams for LHC

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    The possibility of the enhanced optical cooling (EOC) of Lead ions in LHC is investigated. Non-exponential feature of cooling and requirements to the ring lattice, optical and laser systems are discussed. Comparison with optical stochastic cooling (OSC) is represented.Comment: 4 page

    Self-stimulated Emission of Undulator Radiation

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    We attract attention that interaction of particle in downstream undulator with its own wavelet emitted in upstream undulator could be as strong as with the frictional field in undulator itself. This phenomenon could be used for enhancement of signal from pickup undulators in optical stochastic cooling methods as well as for increase of damping.Comment: 3 pages, 2 figure

    Self-Stimulated Undulator Radiation and its Possible Applications

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    We investigated the phenomena of self-stimulation of incoherent emission from an undulator installed in the linear accelerator or quasi-isochronous storage ring. We discuss possible applications of these phenomena for the beam physics also.Comment: 14 pages, 4 figure

    Methods of recovery technical equipment of the city by using new trends

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    The article deals with the current state of technical equipment of the city, which today is generally in very poor condition. The article also discusses the current unsatisfactory conceptual and coordination solution of engineering network, there are described various reasons why accede to restore technical equipment of the city, and on this basis are described of the possibility of restoration of these buildings with the use of new trends in the field of engineering networ

    Continuous Modeling of Arterial Platelet Thrombus Formation Using a Spatial Adsorption Equation

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    In this study, we considered a continuous model of platelet thrombus growth in an arteriole. A special model describing the adhesion of platelets in terms of their concentration was derived. The applications of the derived model are not restricted to only describing arterial platelet thrombus formation; the model can also be applied to other similar adhesion processes. The model reproduces an auto-wave solution in the one-dimensional case; in the two-dimensional case, in which the surrounding flow is taken into account, the typical torch- like thrombus is reproduced. The thrombus shape and the growth velocity are determined by the model parameters. We demonstrate that the model captures the main properties of the thrombus growth behavior and provides us a better understanding of which mechanisms are important in the mechanical nature of the arterial thrombus growth

    Proposal for an Enhanced Optical Cooling System Test in an Electron Storage Ring

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    We are proposing to test experimentally the new idea of Enhanced Optical Cooling (EOC) in an electron storage ring. This experiment will confirm new fundamental processes in beam physics and will demonstrate new unique possibilities with this cooling technique. It will open important applications of EOC in nuclear physics, elementary particle physics and in Light Sources (LS) based on high brightness electron and ion beams.Comment: 21 pages, pdf. The number of electrons in the bunch in the example is decreased, the volume of the paper is increased, Misprints are correcte
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