Page 251 - Fundamentals of Magnetic Thermonuclear Reactor Design

232 Fundamentals of Magnetic Thermonuclear Reactor Design

casting devices producing W–Cu bimetallic tiles, and diffusion bonding
(HIP technology) device for CuCrZr–SS steel joints.
l Special machines for electroerosion cutting of tungsten, laser beam welding
and high-speed milling.
l Test benches for metallography and mechanical testing.
l Measuring and testing equipment (for 3D geometry, ultrasonic and X-ray
control, as well as vacuum and hydraulic tests).
The TSEFEY-M facility is intended for thermal engineering and material re-
search, as well as design and process optimisation and testing of in-chamber com-
ponent mockups. The TSEFEY-M experimental programme includes the following:

l Simulation and study of extreme quasi-stationary heat loads and their poten-
tial damaging effects on armour materials (e.g. evaporation, melting, local
erosion and cracking).
l Search for ways to intensify the heat-exchange processes in water- and gas-
cooled systems using one-sided surface heating.
l Multilayer structure evaluation in terms of strength and durability under
thermal cycling loading at large temperature gradients.
l Optimisation of high-temperature vacuum-technology processes used at
the ITER construction stage, including those involving fast temperature in-
crease and/or decrease (e.g. degassing, thermal processing, casting, coating
deposition and fast brazing).
l Experimental optimisation treatment and simulation testing of structures ex-
posed to plasma-induced heat loads.
The facility includes (Fig. 7.7):

l a vacuum chamber with built-in energy receiving target
l movable targets
l an electron gun with controllable beam
l vacuum equipment
l two stand-alone water-cooling circuits and a water-recirculation system
l closed-loop circuit for helium cooling of mockups
l diagnostic equipment and information gathering/processing system
l communications and auxiliary equipment

An electron gun (Table 7.4) mounted on the chamber upper lid along its axis
provides a controllable heat load on mockups and materials.
3
A cylindrical working chamber of around 4 m has ports measuring 50–
2
400 mm in diameter and a 700 × 800 mm door flange allowing to place a
mockup inside the facility for testing, connect pumping equipment and make
2
diagnostic equipment available. Mockups measuring up to 200 × 300 mm and
weighing up to 10 kg are positioned using a movable water-cooled manipulator
and are entered in through a locked chamber. Sizeable mockups, measuring
2
500 × 700 mm and weighing up to 200 kg are mounted on a rail-track target