Lu, L. He, T. Ma, W. Xing, C.C. Yang, L. JACoW Publishing Geneva, Switzerland 2226-0366 978-3-95450-194-6 10.18429/JACoW-LINAC2018-MOPO088 English 187-189 MOPO088 DTL HOM cavity linac impedance Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-LINAC2018-MOPO088 http://jacow.org/linac2018/papers/mopo088.pdf Normally, drift tube linacs (DTL) are used following RFQ linacs for beam acceleration in middle and high beam energy region. but acceleration efficiency of DTLs is decreasing with beam energy increasing. Using resonated higher order mode (HOM) of cavity, DTL can get higher effective shunt impedance. we proposed a 325MHz DTL with TE115 mode. In this paper, the dynamics calculation and electromagnetic design of the HOM-DTL will be reported.