Park, G.-T. Cha, H.J. Kim, H. Kim, W.K. Yao, Z.Y. JACoW Geneva, Switzerland 978-3-95450-178-6 10.18429/JACoW-SRF2015-TUPB072 English 747-749 TUPB072 cavity ion vacuum TRIUMF simulation Contribution to a conference proceedings 2015 2015-12 http://dx.doi.org/10.18429/JACoW-SRF2015-TUPB072 http://srf2015.vrws.de/papers/tupb072.pdf β=0.12, f=162.5 MHz half-wave resonator for Rare Isotope Science Project (RISP) was recently tested at TRIUMF. We briefly report the vertical test result: At 2K, the cavity achieved Q₀=2·10⁹ at E_{acc}=6.4 MV/m and the performance was limited at E_{acc}=7.8 MV/m by intense field emission. The surface processing was standard: 120 micron buffered chemical polishing followed by high pressure rinsing. After first cold test, 120C baking was done and the corresponding result was also obtained.