Shvedunov, V.I.
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55 MeV RACE-TRACK MICROTRON OF THE LEBEDEV INSTITUTE |
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A.I. Karev¹, A.N. Lebedev¹, V.G. Raevskyª¹, A.N. Kamanin², N.I. Pahomov², V.I. Shvedunov² ¹Lebedev Physical Institute of Russian Academy of Sciences, Moscow, Russia ²Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia Abstract The design of 55 MeV Race-Track Microtron (RTM) with pulse current up to 50 mA has been completed and now accelerator is under construction. We present the general scheme of this microtron, the basic results of computer simulation, the parameters of the RTM components and describe engineering design and status of the machine. ª corresponding author |
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BEAM PARAMETERS MEASUREMENT OF TECHNOLOGICAL 10 MeV LINAC |
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A.S. Alimov¹, E.A. Alimov¹, A.N. Kamanin¹, V.V. Khankin¹, N.I. Pakhomov¹, V.I. Shvedunovª¹, A.V. Gryzlov², S.V. Lamonov², A.P. Musatov², V.N. Sigalaev² ¹Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia ²Federal State Unitary Enterprise Research and Production Corporation "Toriy", Moscow, Russia Abstract Prototype of technological electron linac with beam energy 10 MeV has been designed and built in collaboration of SINP MSU and FSUE RPC "Toriy" [1]. We describe here methods and results of the beam parameters measurement and compare the results with calculations. ª corresponding author |
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DIFFRACTION ACCELERATING STRUCTURE FIELD DISTRIBUTION MEASUREMENTS |
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A.Yu. Baranov, A.N. Kamanin, N.I. Pakhomov, V.I. Shvedunovª Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia Abstract We describe method and results of field distribution measurements for the diffraction accelerating structure consisting of two conducting gratings embedded in dielectric. This structure with operating aperture close to wavelength can be used for high gradient acceleration in millimetre-miρron wavelength range. ª corresponding author |
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POWER COUPLER FIELD ASYMMETRY INFLUENCE ON PARTICLE BEAMS DYNAMICS IN ACCELERATORS WITH SUPERCONDUCTING CAVITIES |
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M.V. Lalayanª¹, V.A. Makarov¹, N.P. Sobenin¹, V.I. Shvedunov², A.A. Krasnov³, A.A. Zavadtsev³ ¹Moscow Engineering Physics Institute (State University), Moscow, Russia ²Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia ³Scantech Sciences LLC, Atlanta, USA Abstract An investigation of input coupler asymmetry influence on electron beam's dynamics in energy recovery linacs (ERL) with superconducting cavities was carried out. There were considered several types of input power couplers coaxial and waveguide, asymmetric and symmetric. Based on numerical modeling distribution of electromagnetic fields in accelerating cavity with input coupler was found, the transverse deflecting impulse was calculated. RTMTRACE software was adapted for beam's dynamics modeling. ª corresponding author |
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SUPERCONDUCTING RF ELECTRON RECIRCULATOR FOR NUCLEAR PHYSICS RESEARCH AT LEBEDEV PHYSICAL INSTITUTE |
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V.G. Kurakinª¹, G.A. Sokol¹, V.G. Nedoresov², B.S. Ishkhanov³, V.I. Shvedunov³ ¹Lebedev Physical Institute of Russian Academy of Sciences, Moscow, Russia ²Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia ³Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia Abstract Conceptual design of the superconducting rf accelerator is discussed. This machine is supposed to be used in the field of low and intermediate energy nuclear physics. Four pairs of dipole magnets at the vertexes of square and four superconducting rf linacs between them form a configuration that allows multiple electron beam acceleration from the injection to the final energy, synchronism being provided by proper orbit lengthening in bending magnets after each turn. Additional superconducting rf linac is used for injection into the main accelerator. Special design of dipole magnet makes it possible to stop recirculation in order to guide beam to experimental area. Thin target is used for experiments in order to recover beam energy. This allows to save rf energy and to provide safe radiation conditions of the accelerator as well. Synchronism conditions as well as dipole magnet design dictate the energy gain per turn in the accelerator. For field strength about 14 kGs in dipoles the energy gain per turn is 600 MeV for TESLA type superconducting cavity (f=1.3 GHz), and the maximum electron energy 2 GeV might be realized with 3 turns. Taking into account the working accelerator gradient 25 MeV/m of TESLA type cavity the accelerator might be placed in existing accelerator hole of the high energy physics department in Troitsk where electron synchrotron to the energy 1.3 GeV is under operation now. The main arguments in favor of accelerator schema suggested are given in the paper. Beam optics as well as recovery problems are discussed followed the appropriate beam envelope calculations. ª corresponding author |
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