PROGRESS ON A 27 MHZ HEAVY ION RFQ

A 27 MHz heavy ion RFQ is now under construction at ITEP. It based on new ring-connected resonant structure. This structure is low frequency version of previously described "four - ladder" structure. The RFQ has been designed for acceleration of heavy ions with charge to mass ratio of 1/60 (U 4+ ) to energy 100 keV/u. At present the manufacture of the structure is completed, RFQ is assembled and installed into a vacuum tank. The RF measurements confirm the expected parameters calculated by MAFIA and SOPRANO codes - resonant frequency, very reliable mode separation and perfect electrical field distribution. The carried out numerical simulations and experimental results show that given RFQ type is considerably promising candidate for use as initial part of high current heavy ion linac for HIF.