[en] Intermagnetic supports transmit the pressure forces between magnets during operation. The special quality of the intermagnetic support described herewith is to transmit these forces at a low temperature level and to provide an element which can be demounted in the case of magnet replacement or repair operations. The intermagnetic support system can be used for all kinds of superconducting magnet arrangements because no parallel mounting position of magnets is required. Therefore, the demountable cold intermangetic support described here can be applied for tokomaks, mirrors, modular stellarator as well as magnet systems for special purposes whenever a demounting of mechanical supports is required. The mounting procedure is described in detail as well as the demounting of the support system. The thermal losses are estimated for steel and organic composite structures. Problem areas are discussed

[en] In-vessel components of fusion reactors must be remotely replaceable. The necessary handling will be performed from inside the torus by means of work units. A major problem is to carry the work units inside the torus. One concept to solve this problem is to use an in-vessel handling unit based on an articulated boom. It is supported outside the torus and enters the torus through an entry port. Additional supports are not available. Then the work unit (manipulator unit, diverter handling unit or antenna handling unit), attached to the end-frame of the boom, is able to reach any point inside the torus. Therefore the boom consists of eleven links connected by yaw joints. Its stretched (unfolded) length is about 25 m. Due to the scissor type of design, the boom can be folded such that the required area to store it is only 10.25 x 3.2 m. The cross-sections of the links (except those staying outside the torus) are 350 x 1350 mm. In order to allow easy repair and exchange, the drive mechanisms for the joints and the necessary cable are located above the links. The resulting overall dimensions are such that the boom may pass the entry port having an opening of 650 x 1900 mm. The maximum load at the tip of the boom is about 3900 kg. It consists of the maximum payload of 1000 kg (which is the load of a diverter plate plus gripper) and the load of the diverter handling unit of 29000 kg. The design of the boom such that the stresses and strains are within allowed limits turned out to be a difficult task. It led to a boom dead load of about 25000 kg which is 25-times the payload. In this paper the structural mechanics assessment to find an appropriate design is described