Wu, G. Chandrasekaran, S.K. Chouhan, V. Eremeev, G.V. Furuta, F. McGee, K.E. Murthy, A.A. Netepenko, A.V. Ozelis, J.P. Park, H. Posen, S. JACoW Publishing Geneva, Switzerland 2673-5504 978-3-95450-234-9 10.18429/JACoW-SRF2023-MOPMB030 English 158-161 cavity niobium radio-frequency SRF multipactoring Contribution to a conference proceedings 2023 2023-09 https://doi.org/10.18429/JACoW-SRF2023-MOPMB030 https://jacow.org/srf2023/papers/mopmb030.pdf Medium Temperature baking of low beta 650 MHz cavities was conducted in a UHV furnace. A systematic study of cavity surface resistance components, residual and BCS, was conducted, including analyzing surface resistance due to trapped magnetic flux. Cavities showed an average 4.5 nano-ohm surface resistance at 17 MV/m under 2 K, which meets PIP-II specifications with a 40% margin. The results provided helpful information for the PIP-II project to optimize the cavity processing recipe for cryomodule application. The results were compared to the 1.3 GHz cavity that received a similar furnace baking.