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Iosseliany, D. D.

Paper Title Page
WEPC146 Plasma Lens of the ITEP Heavy Ion Accelerator 2353
 
  • A. A. Drozdovsky, V. Abramenko, M. M. Basko, A. Golubev, D. D. Iosseliany, A. V. Kantsyrev, A. P. Kuznetsov, Yu. B. Novozhilov, O. V. Pronin, P. V. Sasorov, S. M. Savin, B. Y. Sharkov, V. V. Yanenko
    ITEP, Moscow
 
  At ITEP, on the bases of the TWAC-ITEP (Terawatt Accumulator) complex, a new facility is being built to conduct research at high energy densities in matter*. Application of a plasma lens to this area of research has a number of essential advantages in comparison with the traditional system based on quadruple lenses**. In accordance with the principal goals of this project, a pulse-power generator has been developed, with which a stable discharge current of up to 250 kA and duration of 4 μs has been achieved and which was used for experimental and theoretical investigation of the plasma lens performance. The plasma lens was installed into the exit channel of the TWAC accelerator complex, and its testing began by focusing of a C+6 beam with the ion energy of 200 MeV/a.u.m. As one of the first results, a minimum focal spot diameter of 350 μm FWHM has been measured at a target distance of 50 mm from the end of the discharge tube. The lens parameters were as follows: capacitance – 24 μF, charging voltage – 13 kV, discharge current – 220 kA, current half-wave – 4 μs, argon pressure – 3 mbar.

*Sharkov B. Yu. et al. Nucl. Instr. Meth. A464 (2001), p. 1.
** D. H.H. Hoffmann et al. Nucl. Instr. Methods Phys. Res., Sect. B 161-163, (2000), p. 9.