Within the framework of the ITER EDA, the subject of remote exchange of the ITER divertor has almost entirely been dealt with by the EU and the development and supply of divertor remote handling (RH) equipment is expected to be a 100% EU contribution to ITER. Prior to July 1998 the EU’s commitment to the topic of divertor handling manifested itself in the construction of the Divertor Test Platform (DTP) at the ENEA Research Centre, Brasimone, Italy. This facility was designed to bring together and demonstrate the main RH activities required for divertor exchange in the ITER’98 machine and in many areas this was successfully achieved. In moving to the ITER 2001 design however, although the general concepts for divertor RH remained intact, the design of most of the divertor handling equipment has significantly changed. For instance, due to dramatic space reductions inside the machine, the simple “trolley-like” radial cassette carriers modeled at Brasimone are now obsolete. Instead, cassettes must be handled in a cantilevered manner using a “Cassette Multifunctional Mover (CMM)” fitted with a number of specialised end-effectors. In response to these significant design changes, it was decided to construct a new divertor RH test facility designated “DTP2” in order to test prototypes of the new ITER 2001 divertor handling devices.

Initially the DTP2 will be configured to demonstrate handling of second cassettes (those located immediately on either side of the access port) using a prototype CMM and Second Cassette End-Effector (SCEE), whose reference design has been developed by TUT (Tampere University of Technology) IHA. Therefore for Phase I operations, the DTP2 facility will comprise a partial vessel mock-up with radial and toroidal rail sections just sufficient to allow central and second cassette operations. The facility will be equipped with a CMM and SCEE prototype plus a cassette mockup accurately replicating the mass, Centre of Gravity, stiffness and the mechanical interfaces of the real ITER cassette.

Procurement contracts to industry for the supply of the above will be placed during 2005 with the aim of having an integrated system in place by the end of 2006.

During 2007 and 2008 a second phase of DTP2 development is planned whereby the facility will be extended in the toroidal direction to allow for testing of further prototypes, such as the “Cassette Toroidal Mover (CTM)”.

Based on the current ITER schedule, the design of the movers for ITER should be frozen during 2009 in order to properly specify the real ITER systems needed for first assembly of the Tokamak in 2013.

For more information on ITER Remote Handling see:


and follow the path:
>> What?
>> Design
>> Main Features
>> Remote Handling

For information on real Remote Handling operations inside the JET Tokamak see:


and follow the path:
>> JET
>> Remote Handling