Enhancement of applicability of high-efficiency random sampling method using control variates method and sensitivity coefficients

The CV-S method is a high-efficiency random sampling to estimate statistical moments of variables, and it uses an approximated target parameter which are linearly dependent on input as mockup parameter. In order enhance the applicability method, we propose use different from but similar whose sensitivity coefficients available. present work, nuclear fuel burnup problems concerned, standard deviation k∞ nuclide number densities at certain estimated by method. Through numerical tests, clearly demonstrated that even if non burnup-related parameters in simple system like pin-cell used mockup, has potential efficiently complicated assembly.