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| TUPSA30 | The Research of Plasma Lens with Discharge Initiation by the Electron Beam | 211 |
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Funding: Work supported by the Russian Foundation for Basic Research (grant 18-02-01187/18) At the present time, active works are under-way for creating compact laser (electron and proton) accelerators. For them, it is timely to solve problems of transportation and focusing of beams in the plasma lens discharges of the Z-pinch type*. For effective focusing it is necessary to investigate under what conditions of discharge initiation a fairly uniform discharge is formed. In ITEP studies of the dynamics of the plasma in the lens with the initiation of the discharge the electron beam. An experimental setup is used, which includes a source of an electron beam with an energy of 250 KeV at a current of up to 100 A. Main method of observing the dynamics of the plasma discharge is the registration of own plasma radiation in the visible and ultraviolet range. Studies have shown that the process of development of the discharge initiated by the electron beam is significantly different from that in the usual method of z-pinch formation. The plasma distribution in the cross section is quite uniform in a large time interval. This distribution is desirable for the purpose of creating a plasma lens with linear focusing forces. *J. van Tilborg, E. Esarey, S.S. Bulanov, P.V. Sasorov, W.P. Leemans, et al, Nonuniform discharge currents in active plasma lenses, PHYSICAL REVIEW ACCELERATORS AND BEAMS 20, 032803 (2017) |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA30 | |
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TUPSA57 |
Beam Scanner Development for Applied Physics Research at NUCLOTRON | |
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| Scanner for applied physics research at NUCLOTRON accelerator is described. It provides homogeneous irradiation of 200×200 mm target by protons and heavy ions with Z/A= 0.3-0.5 for solving of wide range of applied tasks in the materials science and particle effects mechanisms in biological objects research. The scanner has been optimized for the hardest case: Z/A=0.3, energy - 800 MeV/u, emittance - 40 pi*mm*mrad to operate both in single and multi-frame modes of sample irradiations. The most compact magnetic dipoles have been found as optimization result, which permits to arrange it together with other required elements at NUCLOTRON transport channel. Main characteristics of power supply were obtained and discussed. | ||
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| TUPSA61 | Development of the Ion Beams HIPR-1 Transport Channel for Ion Energy Losses Measurement in Plasma Target | 276 |
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| The research of the processes occurring during interaction of heavy ions with plasma is carried out on the Heavy Ion RFQ HIP-1 (heavy Ion Prototype) in the ITEP. The HIPr-1 is a heavy ion RFQ linac which accelerates ion beams generated by either MEVVA ion source or duoplasmatron. It provides accelerated beam of ions from C+ to U4+ with energy of 101keV/n and several mA of current. Gas-discharge plasma target which was produced in ITEP is used for the measurement of ion energy losses in the ionized matter. The diaphragms at the entrance and exit of the plasma target provide the necessary pressure into the transport channel (which is 10-6 mbar), while the gas pressure in the target equals to several mbar. The design of the beam transport channel for performing experiments to determine the energy losses in plasma was developed based on the beam dynamics simulation. According to the obtained results the first successful tests on the HIPr-1 were held. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA61 | |
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