Higher order mode investigation of superconducting CH structures and status of the CH prototype cavity

H-Mode cavities (IH-DTL, IH-RFQ, 4-Vane-RFQ) have been developed successfully during the last decades for a large variety of applications in the field of ion acceleration. The CH- or Crossbar H-structure is a new H-Mode drift tube structure operating in the TE₂₁₀ mode. This structure is currently under development at the IAP in Frankfurt, Germany. This type of cavity is an excellent candidate for the use in future high current applications like IFMIF or XADS with beam currents of up to 125 mA. For these applications superconducting operation is very attractive. The overall plug power consumption is lower and the use of larger apertures can reduce the risk of activation significantly. Due to the possible superconducting operation it is important to investigate the higher order modes (HOM) in such a cavity. In this paper, we present the first results of the HOM analysis and give a status of the development of the superconducting CH cavity prototype.