Speaker
Aleksey Arakcheev
(Budker Institute of Nuclear Physics)
Description
The residual mechanical deformation and stress were measured in the preliminary experiments carried out at synchrotron radiation (SR) scattering stations on VEPP-3 in the Siberian Center of Synchrotron and Terahertz Radiation. Significant changes in the SR diffraction are found as the result of material recrystallization or irradiation of the material by plasma or high energy ions. It implies that the SR scattering diagnostics may be an informative instrument for in-situ observations of state of plasma facing components.
The next step of the SR scattering diagnostics development at the novel scattering station “Plasma” is the dynamic measurements during pulsed heat loads. Currently 1J YAG laser is used for the 0.2ms heat load simulation and 100J laser is under development. The destructive effect of pulsed heat loads is caused by mechanical stresses in a strongly non-uniformly heated material. The main aim of current development of diagnostics based on SR scattering is the dynamic measurements of deformation and stress dependences on the depth under the surface. The deformation and stress distributions may be calculated using measurements of the diffraction peak of SR passed through the sample. The set of requirements determines restrictions on SR brightness and energy. The SR from VEPP-4 with energy 69keV will be used for experiments with tungsten. Also a single crystal samples are necessary for increasing of the diffraction peak brightness. Currently 1D gas X-ray detector DIMEX is used for measurements. The development of silicon detector is in progress.
The diffraction peak parameters for SR reflected by germanium single crystal were observed in the first dynamic experiments. The changes of intensity and position of the diffraction peak were measured during the laser irradiation of material. The result demonstrated possibility of the dynamic experiments. Measurements of the diffraction peak passed through the tungsten sample will be the next step.
Co-authors
Aleksandr Burdakov
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation;Novosibirsk State Technical University, 20 Karla Marksa prospect, Novosibirsk, 630092, Russian Federation)
Aleksey Arakcheev
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation;Novosibirsk State Technical University, 20 Karla Marksa prospect, Novosibirsk, 630092, Russian Federation)
Alexander Kasatov
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Alexander Ryazanov
(National Research Centre “Kurchatov Institute”, 1 Akademika Kurchatova pl., Moscow, 123182, Russian Federation)
Alexander Shmakov
(Boreskov Institute of Catalysis, 5 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation)
Alexander Vasilyev
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Alexey Ancharov
(Institute of Solid State Chemistry and Mechanochemistry, 18 Kutateladze street, Novosibirsk, 630128, Russian Federation)
Andrey Shoshin
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Boris Khripunov
(National Research Centre “Kurchatov Institute”, 1 Akademika Kurchatova pl., Moscow, 123182, Russian Federation)
Boris Tolochko
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Institute of Solid State Chemistry and Mechanochemistry, 18 Kutateladze street, Novosibirsk, 630128, Russian Federation)
Dmitry Skovorodin
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Igor Kandaurov
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Igor Shikhovtsev
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Leonid Vyacheslavov
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Lev Shekhtman
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation)
Marat Sharafutdinov
(Institute of Solid State Chemistry and Mechanochemistry, 18 Kutateladze street, Novosibirsk, 630128, Russian Federation)
Sergey Polosatkin
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation;Novosibirsk State Technical University, 20 Karla Marksa prospect, Novosibirsk, 630092, Russian Federation)
Sergey Popov
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation)
Vasili Koidan
(National Research Centre “Kurchatov Institute”, 1 Akademika Kurchatova pl., Moscow, 123182, Russian Federation)
Vladimir Popov
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation;Novosibirsk State University, 2 Pirogova street, Novosibirsk, 630090, Russian Federation)
Yuriy Trunev
(Budker Institute of Nuclear Physics, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russian Federation)
