• T. Tajima, W.B. Haynes, F.L. Krawczyk, M.A. Madrid, R.J. Roybal, E.I. Simakov
  LANL, Los Alamos, New Mexico
• W.A. Clemens, K. Macha, R. Manus, R.A. Rimmer, L. Turlington
  JLAB, Newport News, Virginia

An update on the study of 805 MHz elliptical SRF cavities that have been optimized for high gradient will be presented. An optimized cell shape, which is still appropriate for easy high pressure water rinsing, has been designed with the ratios of peak magnetic and electric fields to accelerating gradient being 3.75 mT/(MV/m) and 1.82, respectively. A total of 3 single-cell cavities have been fabricated and tested with various conditions. In addition, a 6-cell cavity design has been completed including multipacting simulations.