Investigation of probability of optimisation of geometrical dimensions of double-gap cavities

The technique of estimation of optimal geometrical parameters of double-gap cavities is offered. It is shown, that there is an optimal value of accelerating voltage where magnitude of the criterion of optimization reaches the maximal value. It has been calculated, that the value of this parameter for double-gap cavities surpasses in 4-5 times the value of parameter of optimization for one-gap cavities.