Conceptual Design of a Dedicated Fourth-Generation Specialized Synchrotron Radiation Source (SSRS-4) at the Kurchatov In
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Conceptual Design of a Dedicated Fourth-Generation Specialized Synchrotron Radiation Source (SSRS-4) at the Kurchatov Institute I. A. Ashanina,b, Yu. A. Bashmakova,b,c, V. A. Budkinb, A. G. Valentinova, M. A. Gusarovaa,b, D. K. Danilovaa,b, A. A. Dementeva,b, V. V. Dmitriyevaa,b, N. S. Dudinaa, V. S. Dyubkova,b, Yu. D. Kliuchevskaiaa,b, V. N. Korchuganova, M. V. Lalayana,b, Yu. Yu. Lozeeva,b, T. A. Lozeevaa,b, A. A. Makhoroa,b, V. Yu. Mekhanikovab, O. A. Mosolovab, S. M. Polozova,b,*, A. I. Pronikova,b, V. I. Rashchikova,b, A. A. Savchenkoa,b, A. V. Samoshinb, A. S. Smygachevaa, V. A. Ushakova, A. M. Feshchenkoa,b, E. A. Fomina, V. L. Shatokhinb, J.-C. Biascid, S. Liuzzod, P. Raimondid, J.-L. Revold, L. Farvaqued, and S. Whited aNational
bNational
Research Center Kurchatov Institute, Moscow, 123098 Russia Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409 Russia cLebedev Physical Institute, Russian Academy of Sciences, Moscow, 119333 Russia dEuropean Synchrotron Radiation Facility, Grenoble, 38000 France *e-mail: [email protected] Received June 7, 2018; revised June 7, 2018; accepted July 7, 2018
Abstract–Work on the conceptual design of a dedicated fourth-generation fourth-generation Specialized Synchrotron Radiation Source (SSRS-4) is in progress at the Kurchatov Institute, Moscow. The project is being developed in collaboration with the European Synchrotron Radiation Facility (ESRF) in Grenoble, France. In this paper, the initial results of our work on this project are reported, major directions of current research are presented, and possible areas of application of the SSRS-4 are outlined. The key element of the currently discussed design is a 6-GeV storage synchrotron with an orbit length of ~1300 m and the magnetic lattice that should provide a horizontal transverse emission of 70–100 pm rad. Further optimization may allow for reducing the emittance to 20–40 pm rad. Of the injection schemes under discussion, one features a full-scale booster synchrotron deployed in the same tunnel as the main storage ring, and the second is a topup linac. The latter can also be used as an electron-beam driver for a free-electron laser. Keywords: fourth-generation synchrotron radiation source, storage synchrotron, top-up injection, transverse emittance DOI: 10.1134/S1063778818110030
1. INTRODUCTION Today, third- and fourth-generation synchrotron radiation (SR) sources and X-ray free-electron lasers (FELs) find ever broader applications in materials science, molecular biology and biochemistry, crystallography, spectroscopy, studies of rapid processes, medicine, and other areas of scientific and applied research. In these applications, the crucial problem consists in reaching the diffraction limit for a given beam energy: thereby, an object can be imaged with high contrast and sharpness once its size is comparable with the wavelength of the synchrontron or undulator radiation. Four generations of SR sources are usually distinguished. The
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