Development of three-dimensional reactor analysis code system for accelerator-driven system, ADS3D

Sugawara, Takanori; Hirai, Yasushi*; Nishihara, Kenji; Iwamoto, Hiroki; Sambuu, O.*; Ushio, Tadashi*

JAEA-Data/Code 2014-024, 86 Pages, 2015/02

JAEA-Data-Code-2014-024.pdf:6.04MB

To investigate an Accelerator-Driven System (ADS) with sub-criticality control mechanism such as control rods or burnable poison, the ADS3D code has been developed on MARBLE which is a next generation reactor analysis code system developed by JAEA. In the past neutronics calculation for the ADS, JAEA employed RZ calculation models to realize efficient investigations. However, it was very difficult to model sub-criticality control mechanisms in RZ calculation models. The ADS3D code system is available to calculate the transportation of protons and neutrons, the burn-up calculation and the fuel exchange in three-dimensional calculation models. It means this code system can treat ADS concepts with sub-criticality control mechanism and makes it possible to investigate a new concept of ADS.

Rolling of the reactor physics road map (RM2017)

Ushio, Tadashi*; Aizawa, Naoto*; Fujita, Tatsuya; Gunji, Satoshi

no journal, , 

The reactor physics road map is and has to remain "the guide for reactor physics engineers/researchers in considering future directions of technology and research developments," thus the periodical rolling by reactor physics engineers/researchers is necessary. In consideration of the fact that five years have already passed since the current 2017 version (RM2017, October 2017) was developed, and the environment surrounding nuclear energy has significantly changed such as the developments of GX (Green Transformation) strategy and Carbon-Neutrality by 2050, a new 2024 version (RM2024) was developed by revising RM2017 through the review of current items and descriptions. In the planning lecture by the reactor physics division, the details of this rolling work are introduced, and the expectations for the road map, the requirements for ideal road map, the desirable items, etc. are discussed by an exchange of opinions with reactor physics engineers/researchers.