TELEMATICS APPLICATIONS REMOT: Description of the intended plasma physics demonstrator

This document presents the intended plasma physics demonstator in the REMOT Project. Due to the complexity of the system the demonstrator should be kept as simple as possible without sacrificing flexibility. The demonstrator should be made in such a way that it can easily be modified and expanded. Especially in the early stages of the project updates and addition of new features will occur frequently. The demonstrator should use a distributed security setup. One central login manager keeps track of who is logged in and what devices they control. It might be necessary to facilitate more than one operator for a single diagnostic. Some diagnostics, however, will allow only one operator to be active at a time. The login manager takes care of the administration of such access rights. It distributes information about these access rights to the diagnostics. It is up to the software controlling the diagnostics to actually implement the access rights. (see Figure 8) The limited amount of time, available to construct the demonstrator, rules out the use of any existing application software that is not adapted to CORBA. A single client program should be able to perform all tasks mentioned above. Direct communication with user software that does not comply to CORBA would introduce unnecessary complications. This may seem like a limitation to the software that can be used for the system, but in fact it is not. It is possible to use a software library which implements an interface that is based on CORBA in a way that is transparent to the programmer. (He can include it in his own programs). This gives physicists the ability to gradually migrate to the use of CORBA as the basis for their software architecture.