Study of Radiating Z Pinches and «BAIKAL» Project

Summary form only given. In SRC RF TRINITI the physics of radiating Z pinches for application as a source of x-ray for ICF target ignition are under investigation. Simultaneously the works on a designing the module of the generator which should deliver the current pulse up to 50 MA as a driver for r...

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Main Authors: Grabovski, E.V., Aleksandrov, V.V., Afanasyev, V.A., Fedulov, M.V., Efremof, N.M., Frolov, I.N., Gribov, A.N., Gricuk, A.N., Khomutinnikov, G.N., Krylov, M.K., Laukhin, Ya.N., Lototsky, A.P., Medovshikov, S.F., Mitrofanov, K.N., Nedoseev, S.L., Nikolashin, A.A., Oleinik, G.M., Porofeev, I.Yu, Samokhin, A.A., Seryakov, A.G., Smirnov, V.P., Volkov, G.S., Zagriadski, L.V., Zaitsev, V.I., Sasorov, P.V.
Format: Conference Proceeding
Language:English
Subjects:
Ignition
Magnetic flux
Physics
Plasma measurements
Plasma x-ray sources
Production
Radio frequency
Switches
Wire
X-ray imaging
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Summary:Summary form only given. In SRC RF TRINITI the physics of radiating Z pinches for application as a source of x-ray for ICF target ignition are under investigation. Simultaneously the works on a designing the module of the generator which should deliver the current pulse up to 50 MA as a driver for radiating Z pinch are conducted. Experiments for study of the wire array compression are conducted on the largest in Russia laboratory source of pulsed electric power "Angara-5-1" installation. In recent experiments on installation "Angara-5-1" the quantitative distinction in initiation of wire liners from various materials was shown. Using the set of modified 0-dimensional equations the description of electrical characteristics of Z-pinch discharge at stagnation is developed. Modes of multiwire array compression in which there are a significant excess of the measured sizes of pinch as in visible and in x-ray radiation above the minimal size of pinch, obtained in modeling without taking into account ohmic resistance of plasma, are found out. It is shown, that rate of average current radius change which is calculated from electrical current and voltage profiles has a sharp peak at a moment of start of X-ray output. The image of stagnated Z-pinch in hard X-ray quanta was recorded. The difference of images obtained in soft (~0.5 keV) and hard (6-50 keV) X-rays is presented. Time delay of hard X-ray power peak relatively soft X-ray power peak was recorded. The possible mechanisms of hard X-ray production are discussed. The features of conical multiwire arrays implosion is discussed. Dependence of the height of radiating pinch on a cone angle is obtained. For development of multimegaampere generators for IFE the comparison of intensity of plasma production on a surface of electrodes from lead and stainless steel under action of current with high linear density and high intensity of X-ray is executed. On installation "MOL" intended for developing the scheme of "Baikal" generator the tests of energy transfer from the inductive store to the magnetic amplifier were executed. Improvement of design of explosive electrical switch type RV-50/1000 is executed. The scheme of a magnetic flux compressor without use of the additional source of initial magnetic flux is proposed.
ISSN:0730-9244
2576-7208
DOI:10.1109/PPPS.2007.4345590