Conceptual design finalisation of the ITER In-Vessel Viewing and Metrology System (IVVS)

Review of the ITER diagnostics suite for erosion, deposition, dust and tritium measurements

“…The measurements of intensity and phase delay are respectively used for viewing and metrology of the surface [19]. It will be installed in 6 lower ports and will consist of a mechanical deployer and a scanning head (see Fig.…”

Design and experimental tests of an active cooling system for a kind of in-vessel inspection manipulator

“…First, most robotic components, such as the joint motors, servo drives and position sensors, were high temperature hardened to work normally at the required high temperature conditions; second, a low temperature nitrogen airflow was introduced through a specialized pipeline to provide a cooling effect for some arm components, such as the inspection camera at the arm end position. The in-vessel viewing system (IVVS) for the international thermonuclear experimental reactor (ITER) program was another example of the in-vessel inspection systems (Dubus et al , 2013) (Dubus et al , 2014). The IVVS had six special probe structures that can be deployed directly into the vacuum vessel by a simple linear deployment mechanism, in which the movement was transmitted only through mechanical structures and all the actuation components are located outside of the vacuum vessel.…”

IVVS probe mechanical concept design

“…storage plugs located into long and narrow dedicated port extensions into the vacuum vessel. The system is conceived to be used in between the discharges and normally will be operated in ITER once a week with the toroidal magnetic field turned on, providing high resolution images and metrology measurements [1].…”

“…The probe design has been then revised in order to be compatible with ITER environmental conditions such as high vacuum, gamma radiation lifetime dose http://dx.doi.org/10.1016/j.fusengdes.2015.05.008 0920-3796/© 2015 Elsevier B.V. All rights reserved. up to 5 MGy, cumulative neutron fluence of about 2.3 × 10 17 n/cm 2 , operative temperature of 120 • C and magnetic field of 8 T [1].…”