  There's presently a growing demand for high current proton and deuteron
linear accelerators based on superconducting technology to better support
various fields of science. A \b{eta}=0.09 162.5 MHz high current
superconducting half wave resonator (HWR) has been designed at Peking
University to accelerate 100 mA proton beam or 50 mA deuteron beam after the
RFQ accelerating structure. The detailed electromagnetic design, multipacting
simulation, mechanical analysis of the cavity will be given in this paper.
