Korchuganov, V.
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A NEW INJECTION SYSTEM FOR KURCHATOV SOURCE OF SR |
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A. Anoshinª, E. Fomin, V. Korchuganov, Yu. Krylov, V. Kvardakov, S. Pesterev, S. Tomin, V. Ushkov Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract The accelerator complex of the KCSR consists of 2.5 GeV main storage ring, 450 MeV booster storage ring and 80 MeV linac. A project of the complex modernization comprising new brighter optical lattices of main storage ring and new injection system were developed in KCSR. New optical lattices will allow to reduce natural beam emittance from present 100 nm∙rad to 18 nm∙rad. But due to significant decrease of dynamic aperture the efficiency of injection from the booster storage ring having big natural emittance will be drastically reduced. A new 2.5 GeV booster synchrotron (BS) with 50 nm∙rad emittance was developed to overcome this problems. It will be placed in the same tunnel with main ring. Modernization project provides for a possibility to increase injection energy from linac to BS from 80 MeV to 160 MeV by double electron bunches transition through linac structure. ª – corresponding author |
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EDGE RADIATION AT SIBERIA-2 STORAGE RING |
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V. Korchuganov, N. Smolyakovª, N. Svechnikov Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract At the present time an edge radiation generated by a relativistic electron beam at fringe fields of bending magnets in storage rings attracts widespread attention as a source of intensive ultraviolet and infrared radiation. In this report, we present the numerical simulation of flux and spatial distribution of edge radiation at Siberia-2 storage ring. It is shown that we will gain in intensity considerably for the radiation in a wide spectral range below 350 eV as compared with standard synchrotron radiation from regular part of bending field. ª – corresponding author |
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ELECTRON BEAM DYNAMICS IN LINAC OF KURCHATOV SOURCE OF SYNCHROTRON RADIATION WITH ENERGY DOUBLING |
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A. Anoshin, E. Fominª, V. Korchuganov, S. Tomin Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract According to new injection scheme projected for the Kurchatov synchrotron radiation source a full energy booster synchrotron is planed to be the injector of the main storage ring SIBERIA-2. An existing linear accelerator will simultaneously serve as 80 MeV injector for storage ring SIBERIA-1 and as injector for the booster synchrotron with the electron energy of 160 MeV. The energy doubling scheme will be realized by magnetic mirror at the end of linac structure and second passage of electrons through accelerator structure of the linac. This paper describes the possibility of electron energy doubling. The results of computer simulation of electron beam dynamics during the double passage linac structure are presented. ª – corresponding author |
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FIRST RESULTS OF SIBERIA-2 STORAGE RING OPERATION WITH 7.5 T SUPERCONDUCTING WIGGLER |
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A. Valentinov¹, V. Korchuganovª¹, M. Kovalchuk¹, Yu. Krylov¹, V. Kvardakov¹, D. Odintsov¹, Yu. Yupinov¹, S. Khrushev², N. Mezentsev², E. Miginsky², V. Shkaruba², V. Tsukanov² ¹Russian Research Centre Kurchatov Institute, Moscow, Russia ²Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract 7.5 T 19-pole superconducting wiggler has been installed on SIBERIA-2 storage ring in December 2007. First results of an operation of Siberia-2 with the wiggler are described. An influence of the wiggler on betatron tunes, closed orbit, betatron functions and other beam parameters is discussed. Calculated and measured influence on beam parameters is compared. ª – corresponding author |
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FIRST RESULTS OF THE RADIATION MEASUREMENTS NEAR SIBERIA-2 STORAGE RING |
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V. Korchuganov, V. Novikov, V. Ushkovª Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract When an electron is lost in the storage ring due to a bremsstrahlung it produces high energy photons. These photons, in turn, produce neutrons. In the vicinity of the storage ring the residual radiation field is dominated by these photons and neutrons. The report describes first results of the radiation field measurements. The measurement was carried out by a set of high sensitivity to scattered particles monitors which were placed near the vacuum chamber at critical positions of the ring. The extended use of beam loss monitoring gives a better understanding of the linear and non-linear physics involved in the single and multiple particle dynamics. ª – corresponding author |
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MODERNIZATION AND DEVELOPMENT OF KURCHATOV CENTER OF SYNCHROTRON RADIATION AND NANOTECHNOLOGY |
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A. Anoshin, M. Blokhov, V. Leonov, E. Fomin, G. Kovachev, V. Korchuganovª, M. Kovalchuk, Yu. Krylov, V. Kvardakov, M. Martynenko, V. Moryakov, D. Odintsov, S. Pesterev, S. Tomin, Yu. Tarasov, V. Ushkov, A. Valentinov, A. Vernov, Yu. Yupinov, A. Zabelin Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract Kurchatov Synchrotron Radiation Source (KSRS) works for the experiments in the range of SR from VUV up to hard X-ray. Recently a project of technical modernization of KSRS was carried out. It consists of 3 parts: the enlargement of useful experimental hall surface by means of the new building; upgrade of accelerator facilities and injection scheme to improve the SR complex capabilities; construction of new beam lines and experimental stations around Siberia-2 facility. The building was started from the end of 2007. The technical upgrade of SR complex will start in 2009. The report describes the current work and plans at accelerator facilities. The achieved consumer parameters of an electron beam are given. ª – corresponding author |
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POSSIBILITY TO REACH THE DIFFRACTION LIMITED X-RAY SOURCE IN KURCHATOV CENTER OF SYNCHROTRON RADIATION |
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A. Anoshin, E. Fomin, V. Korchuganov, S. Tominª Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract The creation of the diffraction limited radiation source (DLS) on the base of an in – vacuum mini-undulator with wavelength 6 Å is considered at a storage ring SIBERIA-2. Main parameters of undulator as a DLS are defined. Spectral characteristics of undulator radiation taking into account the electron beam parameters are obtained. In addition method and possibility to obtain the minimal electron beam emittance in SIBERIA-2 storage ring, influence of insertion device (ID) on emittance, energy spread, linear and nonlinear motion of electron beam and dynamic aperture are the subjects of studying. ª – corresponding author |
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THE PROGRAM TOOLS FOR KSRS OPERATION |
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E. Kaportsevª, Yu. Krylov, V. Korchuganov, K. Kuznetsov, L. Moseiko, N. Moseiko, Yu. Yupinov Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract The running cycle of Kurchatov Synchrotron Radiation Source (KSRS) includes the injection of electrons with energy 80 MeV from the linear accelerator in the booster storage ring Siberia-1, the accumulation of a electron current up to 400 mA and, then, electron energy ramping up to 450 MeV with the subsequent extraction of electrons in the main ring, storage ring Siberia-2, and accumulation there up to 300 mA, and at last the energy ramping up to 2.5 GeV. The control system is based on the distributed network of the processors operating technological systems of KSRS. The operational level of control system is realized as a local network of the personal computer. Instrument of work of the operator is a set of the applied programs realizing the inquiries to the control system. The database describing logic channels of the control, modes of the technological systems and the script of the running cycle of accelerating facilities is developed. Logic channels of the control are a basis for creation of the user interface. The examples of realization of the software used in operative work KSRS are given. ª – corresponding author |
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