Experimental possibilities for fusion material tests in TASKA

A test facility like TASKA can fulfill essential requirements for material research in the field of fusion technology, since: high neutron fluences and adequate concentration of helium- and other transmutation products will be achieved. Stress- and temperature cycling connected with the pulsed operation of Tokamak-reactors can possibly be simulated. First concept studies of a material test module (MTM) in TASKA show that a high number of irradiation capsules can be placed, which allows a broad test matrix with respect to temperature, neutron flux and neutron spectrum. In detail two irradiation capsules were scheduled for installation in the material test module: A capsule for irradiation of nonloaded specimens for post-irradiation examinations and a capsule which contains a creep experiment with an uniaxially loaded specimen. It could be shown that a special miniaturization of samples is presumably not necessary, e.g. design of capsules can be based upon irradiation rigs developed and tested under the Karlsruhe Breeder Program. (orig.)