IMPROVING STABILITY OF THE SELF-INJECTED BUNCH BY VARIATION OF A SEQUENCE OF TWO LASER PULSES PARAMETERS AT WAKEFIELD EXCITATION IN A METAL DENSITY PLASMA

The variation of parameters of a sequence of two laser pulses exciting wakefield in a metal density plasma are considered as a way to improve the self-injected bunch stability: suppression of transverse bunch decay and increasing the existing time of a self-injected bunch in plasma are investigated. Two scenarios of parameter variation were considered. In the first scenario, the simultaneous variation of the parameters of both laser pulses was considered; in the second scenario, the set of parameters for one of the laser pulses after variation differed from the set of parameters for the other laser pulse (profiled sequence of 2 laser pulses) was considered.