  Experts in different accelerator laboratories accumulated wide experience in
RFQ designing. Nevertheless new tasks on high-power, high-energy CW linac
designing (for example, for ADT applications) were appeared recently. Such
accelerators must be practically free of beam losses. This main condition
placed more stringent requirements upon beam quality at the input of each linac
part. Because RFQ is used as beginning part in above accelerators beam
high-quality requirements is related to RFQ primarily. It means that existing
experience in RFQ designing must be enriching by new approaches and new
methodology
