1 Introduction
3
Fig. 1.2 Solid-moderated and -reflected core (A-core) (Ref. [1])
1.1.2 Solid-Moderated and Solid-Reflected Cores
Two solid-moderated cores (A-core; Fig. 1.2 and B-core) are installed at KUCA.
Squared-shaped coupon-type uranium fuel plates (93 wt% enriched) of 2
length, 2
breadth, and 1/16
thick covered with a thin plastic coating are used as the fuel material. Solid moderator materials, including polyethylene and graphite, are combined
with highly-enriched uranium (HEU), thorium, and natural uranium plates to form the
fuel elements. Polyethylene, graphite, beryllium, aluminum, iron, lead, and bismuth
are used as the reflector elements.
A wide variety of neutron spectra could be achieved by varying the composition
of the fuel and moderator plates in the fuel element, and also by varying the reflector
elements.
The A-core can be used in combination with the pulsed-neutron generator, and
also, it is used for carrying out studies on ADS and fission-fusion hybrid reactor
systems.
1.1.3 Light-Water-Moderated and Light-Water-Reflected
Core
A single light-water-moderated core (C-core; Fig. 1.3) is installed at KUCA. Platetype uranium fuel (93 wt% enriched) of 600 mm length, 62 mm width, and 1.5 mm
thick with an aluminum (Al) cladding of 0.5 mm thick are used in the C-core. In
addition, there are two types of curved fuel plates: one 93 wt%, and the other 45 wt%
3
Fig. 1.2 Solid-moderated and -reflected core (A-core) (Ref. [1])
1.1.2 Solid-Moderated and Solid-Reflected Cores
Two solid-moderated cores (A-core; Fig. 1.2 and B-core) are installed at KUCA.
Squared-shaped coupon-type uranium fuel plates (93 wt% enriched) of 2
length, 2
breadth, and 1/16
thick covered with a thin plastic coating are used as the fuel material. Solid moderator materials, including polyethylene and graphite, are combined
with highly-enriched uranium (HEU), thorium, and natural uranium plates to form the
fuel elements. Polyethylene, graphite, beryllium, aluminum, iron, lead, and bismuth
are used as the reflector elements.
A wide variety of neutron spectra could be achieved by varying the composition
of the fuel and moderator plates in the fuel element, and also by varying the reflector
elements.
The A-core can be used in combination with the pulsed-neutron generator, and
also, it is used for carrying out studies on ADS and fission-fusion hybrid reactor
systems.
1.1.3 Light-Water-Moderated and Light-Water-Reflected
Core
A single light-water-moderated core (C-core; Fig. 1.3) is installed at KUCA. Platetype uranium fuel (93 wt% enriched) of 600 mm length, 62 mm width, and 1.5 mm
thick with an aluminum (Al) cladding of 0.5 mm thick are used in the C-core. In
addition, there are two types of curved fuel plates: one 93 wt%, and the other 45 wt%