October 1998

Conference Paper

Neutronics analysis of a spherical torus based volume neutron source

By:
Cerbone, R. J.; Peng, Yueng-Kay M
Page Number:
841
Volume:
2
Book Title:
17th IEEE/NPSS Symposium Fusion Engineering
Publication Date:
October 1998
Conference Name:
17th IEEE/NPSS Symposium on Fusion Engineering
Conference Location:
San Diego, California, United States of America

Abstract

A spherical torus based volumetric neutron source (ST-VNS) concept has been developed as a possible intermediate step to develop the necessary technology for reactor components of future fusion power plants. Such a VNS would complement ITER in testing, developing and qualifying nuclear technology components. Two recently designconcepts for a spherical torus based VNS have been investigated. The initial design operated at 39 MW fusion power with a 0.8 m major radius yielding an average neutron wall loading of 1 MW/ m '. A higher fusion power (326 MW) ST-VNS design was conceived by increasing the major radius to 1.07 m yielding an average neutron wall loading of 5 MW/ m '. In this paper, we report the results of the neutronics analyses of this high power design along with several design modifications including the effects of using ITER materials in the key components. The results of a feasibility study of using the ST-VNS with suitably designed blankets to provide an intense neutron source for neutron science applications is also reported.