Page 59 - Fundamentals of Magnetic Thermonuclear Reactor Design

42 Fundamentals of Magnetic Thermonuclear Reactor Design

3.2 ITER REACTOR CONFIGURATION AND MAIN
CHARACTERISTICS

The ITER is a unique fusion scientific and technological research facility based
on a tokamak with a single-null poloidal divertor (Fig. 3.3; Tables 3.1 and 3.2).
Its toroidal field (TF) coils are D-shaped. The reactor uses vertically elongated
plasmas. The tokamak itself is 29 m in diameter and 30 m high.
The tokamak is at the heart of a separate aseismic building (Fig. 3.4), which
also houses the tritium contour and diagnostic equipment. The building’s walls
and roof of reinforced concrete have the additional functions as a radiation
shield and a safety barrier. The tokamak mid-plane is at the ground level; the
basement floor is approximately 11 m below the ground level. The building roof
is 57 m above the ground level.
The ITER assembly hall is adjacent to the tokamak building. It is equipped
with bridge cranes with a total capacity of 1500 t, which can move pre-assembled
components to the tokamak building using a system of rails designed to with-
stand seismic events.
The reactor includes a magnetic and vacuum pumping and tritium sys-
tems, the additional plasma heating equipment, communications, infrastructure
facilities and supporting mechanical structures. Assembling and remote han-
dling equipment is an important part of it.
The magnetic system includes the following:
l superconducting coils,
l special power supply systems,

FIGURE 3.3 Sectional view of the ITER reactor. (Copyright ITER Organization, 2017).