522 



43 



2. NEAR-TERM FUSION PHYSICS AND TECHNOLOGY 



2.1 PHYSICS 



The physics of high temperature plasmas is still developing and there are 

 many open questions on stability, equilibrium, heating, etc. that need to be 

 addressed. In that regard, there are certain studies involving unique 

 experimental facilities that would benefit from appropriate collaboration. 

 Advanced diagnostics instrumentation and detectors should be designed and 

 shared whenever there is a cost effective advantage. Computer codes and 

 theoretical modelling studies of complex plasma phenomena should be 

 developed in such a way as to avoid duplication of effort and to speed up 

 the process of understanding. 



lEA Agreement on Textor (in force) : 



Within it, the realization of the advanced pump limiter ALT II is 

 recommended. 



I EA Agreement on Asdex and Asdex-Upgrade (in preparation) : 

 It is recommended to sign it as soon as possible. 



lEA Agreement on Cooperation between large Tokamaks (in preparation) : 

 It is recommended to sign it as soon as possible. It should include 

 provision for development of diagnostics for the active phase of 

 operation. 



Pellet injection : 



A workshop should be organized soon under US leadership to define the 



needs in this new field and to propose a collaborative strategy for relevant 



technical developments. 



Neutral beam heating ; 



A workshop should be organized soon under European leadership to define 

 the possible future needs in two fields: 



- energy recovery 



- negative ions 



and to propose a collaborative strategy for relevant developments at 

 MW level. 



Computer codes : 



A workshop should be organized soon under Japanese leadership to propose 



- splitting of voluminous codes in specialized packages to be designed 

 by various partners and used by all, 



- development of plasma modelling and comparison of code analysis, 



- possibly the establishment of international data links. 



