The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
G.H. Hoffstaetter et al., “CBETA, a 4-turn ERL Based on SRF Linacs and Permanent Magnet Beam Transport”, presented at the 29\textsuperscript{th} Linear Accelerator Conf. (LINAC'18), Beijing, China, Sep. 2018, paper WE1A02, unpublished.