Utilisation and Reliability of High Power Proton Accelerators

Workshop Proceedings, Daejeon, Republic of Korea, 16-19 May 2004

image of Utilisation and Reliability of High Power Proton Accelerators

Accelerator-driven systems (ADS) are being considered for their potential use in the transmutation of radioactive waste. The performance of such hybrid nuclear systems depends to a large extent on the specification and reliability of high power accelerators, as well as the integration of the accelerator with spallation targets and sub-critical systems. At present, much R&D work is still required in order to demonstrate the desired capability of the system as a whole.

Accelerator scientists and reactor physicists from around the world gathered at an NEA workshop to discuss issues of common interest and to present the most recent achievements in their research. Discussions focused on accelerator reliability; target, window and coolant technology; sub-critical system design and ADS simulations; safety and control of ADS; and ADS experiments and test facilities. These proceedings contain the technical papers presented at the workshop as well as summaries of the working group discussions held. They will be of particular interest to scientists working on ADS development as well as on radioactive waste management issues in general.



Estimation of Some Characteristics of the Cascade Subcritical Molten Salt Reactor CSMSR

Nuclear Energy Agency

Characteristics of an ADS burner of minor actinides (MA) were estimated, taking into account the following initial assumptions: 10 MW proton accelerator-driver  1 GeV, 10 mA), two-zone cascade subcritical reactor with Äkeff = 0.05, central zone of neutron multiplication and transmutation zone on the basis of NaF-ZrF4 molten salt. Such a scheme reduced by three times the power of the accelerator-driver at the same blanket power. Reactor power was obtained equal to 800 MWth; its burning effectiveness was ~50 kg MA per year or the MA production of five thermal rectors of equal power. The main neutron physics characteristics of the reactor were calculated, including power distribution, reactivity effects, actinides burn-up, thermo-hydraulics of zones, etc.


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