Luo, X. Lao, C.L. Li, M. Lu, X.Y. Quan, S.W. Shan, L.J. Shen, X.M. Wang, F. Wang, H. Yang, X. Zhou, K. JACoW Geneva, Switzerland 978-3-95450-191-5 10.18429/JACoW-SRF2017-MOPB010 English 67-69 MOPB010 ion cryomodule shielding cavity radiation Contribution to a conference proceedings 2018 2018-01 https://doi.org/10.18429/JACoW-SRF2017-MOPB010 http://jacow.org/srf2017/papers/mopb010.pdf A 2×4-cell superconducting linac module for the THz-FEL facility has been developed at the China Academy of Engineering Physics, which is expected to provide 6~8 MeV quasi-CW electron beams with an average current of 1~5 mA. The design of the cryomodule is presented in this paper. The dynamic and static heat load have been evaluated to reasonable level. The temperature distribution inside the cryomodule has been optimized by simulation, as well as mechanical structure and the magnetic shielding.