The main purpose of the beamline design – realization of experiments using explosive charges up to 200 grams of TNT equivalent. To achieve this goal is necessary to use a of hard range of photons in ...the region of 30-60 keV. Additional requirement - the development of a powerful explosion chamber, and very fast one coordinate detector DIMEX. The fist detonation experiments was made with explosive 40 mm diameter. Test WAXS experiments was made and time resolution of 73 ps was received. SAXS/WAXS experiments was made at accelerators complex VEPP-3/VEPP-4.
The Siberian Synchrotron and Terahertz Radiation Center (SSTRC, Budker Institute of Nuclear Physics (INP), Novosibirsk, Russian Federation) is one of the oldest and main Russian centers for ...synchrotron radiation applications. The center combines research efforts of numerous scientific groups, mostly from institutes and universities of the Novosibirsk Scientific Center (Siberian Branch of the Russian Academy of Sciences) as well as researchers from all over Russia. The center provides access to the most popular synchrotron radiation applications and research techniques including the unique ones in the world. The synchrotron radiation (SR) is produced by VEPP-3 and VEPP-4M storage rings of the INP. Most of the activities of SSTRC is devoted to developing original approaches for synchrotron radiation usage. The report covers activity on synchrotron radiation applications at the Siberian Synchrotron and Terahertz Radiation Center as well as some bright results of recent research.
The VEPP-4M accelerator facility with a universal KEDR detector is designed to conduct experiments with colliding electron-positron beams. High-energy physics, nuclear physics, and studies using ...synchrotron radiation are the main directions of research with this facility. In addition, experiments on poorly explored issues in the physics of beams in the electron-positron storage ring and methodological studies to prepare an experiment aimed at testing corollaries of the CPT theorem for an electron and a positron are regularly conducted at the VEPP-4 facility. A number of works performed in recent years are described: studies to increase the accuracy of comparing the electron and positron spin precession frequencies by the resonant depolarization method; measurements of the count rate of Touschek electrons as a function of the beam energy in a wide range; comparison of the methods for measuring the beam energy spread; a study of the electron beam dynamics when a nonlinear betatron resonance is crossed.
A method proposed to preserve the electron beam polarization at the VEPP-4M collider during acceleration with crossing the integer (imperfection) spin resonance at energy E=1763 MeV has been ...successfully applied. It is based on full decompensation of the \( 0.6\times3.3\) Tesla\(\times\)meter integral of the KEDR detector longitudinal magnetic field due to the anti-solenoids 'switched-off'.
Materials science aspects of enhancing the operational safety of promising VVER reactors are reviewed. The requirements for materials of reactor vessels are formulated. An applicability analysis is ...carried out for grade 15Kh2NMFA (class1) vessel steel and grade 15 Kh2MFA-A (modifications A and B) steel for reactor vessels with the enhanced operational safety. The results of investigations for the radiation and thermal embrittlement of grade 15 Kh2MFA-A (modifications A and B) steel are shown.
More accurate modeling of the radiation embrittlement of a calibration metal on the basis of the shift criteria and envelopes of the dose–time dependences experimentally confirms that the modeling ...error corresponds to the variance band limits of the results of tests performed in control samples and reflects the structural nonuniformity of the metal of large-size blanks. It is recommended that high-quality VVER-1000 vessel steel with critical brittleness temperature from –44 to –78°C and from –78 to –121°C be used to eliminate the risk of brittle fracture of the core shells of GEN-IV VVER vessels.
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