Ge, G.M. Eichhorn, R.G. Elmore, B. Furuta, F. Gonnella, D. Gruber, T. Hoffstaetter, G.H. Kaufman, J.J. Liepe, M. O'Connell, T.I. Sears, J. Smith, E.N. JACoW Geneva, Switzerland 978-3-95450-178-6 10.18429/JACoW-SRF2015-MOPB084 English 328-332 MOPB084 cavity SRF superconducting-RF linac HOM Contribution to a conference proceedings 2015 2015-12 http://dx.doi.org/10.18429/JACoW-SRF2015-MOPB084 http://srf2015.vrws.de/papers/mopb084.pdf Cornell University treated five LCLS-II 9-cell cavities by nitrogen-doping recipe. In this paper, we reported the performance of these 9-cell cavities. In the treatments, the nitrogen recipes are slightly different. The cavities have been firstly doped under high nitrogen pressure; after the vertical tests some of the cavities has been reset the surface and re-doped under light nitrogen pressure. The detail of the cavity preparation and test results will be shown. The comparison of the different recipes will be discussed.