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Information × Registration Number 0219U100388, 0118U100310 , R & D reports Title Advanced high-gradient small-scale accelerators for use in high energy physics, industry and medicine popup.stage_title Head Sotnikov Gennadij V., Доктор фізико-математичних наук Registration Date 11-02-2019 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2  Experimentally and theoretically, an increase in the total wakefield in a dielectric compound resonator is studied due to coherent summation of fields from regular sequence of bunches. It is shown that the dependence of the longitudinal electric field at the output end of the resonator on the length of the vacuum part of the composite resonator has sharp maxima at values, multiples of the vacuum wave half-length at the frequency of the excited wakefield in the dielectric part. With an increase in the length of the dielectric tube, the longitudinal electric field increases proportionally. A numerical investigation of the excitation of a wakefield in a three-zone rectangular dielectric resonator with asymmetric injection of a regular sequence of relativistic electron bunches was carried out. The analysis of the transverse dynamics of electron bunches as well as the current through the surface of the dielectric slab has established that the growth of current losses on the dielectric slab over time does not occur due to the amplification of the resonant mode of oscillations with symmetric field distribution. Two ways of increasing the pulsed power of the CPA laser system are considered, namely: by reducing the pulse duration ща the driving generator, and by increasing the pumping energy of the power amplifier. The possibility of further reducing the pulse duration to 14.9 fs is shown when decreasing in the thickness of the substrate of the output mirror from 6 mm to 2 mm. The resulting energy of the radiation of an Nd-YAG pumping laser with an amplifier at a wavelength of 1.06 microns is 5 times greater than for a Nd-YAG laser without an amplifier. Optimizing the operation of an Nd-YAG laser with an amplifier at a wavelength of 0.532 microns resulted in an radiation energy of 276 mJ. The obtained radiation energy of an Nd-YAG laser with an amplifier at 0.532 microns is 6 times that of an Nd-YAG laser without an amplifier. Product Description popup.authors popup.nrat_date 2020-04-02 Close