Méot, F. Ben-Zvi, I. Bevins, M.E. Bogacz, S.A. Douglas, D. Dubbé, C.J. Hao, Y. Liu, C. Michalski, T.J. Minty, M.G. Ptitsyn, V. Robert-Demolaize, G. Roblin, Y. Roser, T. Satogata, T. Spata, M. F. Tennant, C. Thieberger, P. Tiefenback, M.G. Tsoupas, N. Xu, C. Xu, W. JACoW Publishing Geneva, Switzerland 978-3-95450-190-8 10.18429/JACoW-ERL2017-WEIACC003 English 58-58 WEIACC003 linac extraction optics injection experiment Contribution to a conference proceedings 2018 2018-05 https://doi.org/10.18429/JACoW-ERL2017-WEIACC003 http://jacow.org/erl2017/papers/weiacc003.pdf A multiple-pass, high energy Energy Recovery Linac experiment at the JLab CEBAF will be instrumental in providing necessary information and technology testing for a number of possible future applications and facilities such as Linac-Ring based colliders, which have been designed at BNL (eRHIC) and CERN (LHeC), and also drivers for high-energy FELs and 4th GLS. The project has been submitted to, and has received approval from, JLab Program Advisory Committee (PAC 44) in July 2016. Since it was launched 2+ years ago, it has progressed in defining the experimental goals, including for instance multiple-beam instrumentation, ER efficiency, BBU, and the necessary modifications to CEBAF lattice, including for instance a 4-dipole phase chicane in recirculation Arc A, a dump line, and new linac optics. End-to-end simulations have been undertaken and software tools are under development. A next major objective in demonstrating readiness is a technical review as mandated by PAC 44. This paper gives a status of the project and its context, and presents plans for the near future.