The proposal of a high-intensity muon source driven by the CiADS linac, which
has the potential to be one of the state-of-the-art facilities, is presented in
this paper. We briefly introduce the development progress of the
superconducting linac of CiADS. Then the consideration of challenges related to
the high-power muon production target is given and the liquid lithium jet muon
production target concept is proposed, for the first time. The exploration of
the optimal target geometry for surface muon production efficiency and the
investigation into the performance of liquid lithium jet target in muon rate
are given. Based on the comparison between the liquid lithium jet target and
the rotation graphite target, from perspectives of surface muon production
efficiency, heat processing ability and target geometry compactness, the
advantages of the new target concept are demonstrated and described
comprehensively. The technical challenges and the feasibility of the
free-surface liquid lithium target are discussed