Speaker
Luca Zabeo
(ITER Organization)
Description
The ITER Plasma Control System (PCS) is now approaching the second phase of development, the Preliminary Design Review (PDR). The PDR, expected at the end of 2016, is now more deeply investigating possible solutions for the different control areas aimed at operations up to 15MA with low auxiliary heating in L-mode. The entire sequence of a plasma discharge from the break-down to the termination, including disruption, has been addressed by the ITER PCS team and a group of experts. The main challenges have been considered and the first proposal for controls has been delivered.
The control functions in the PCS are strictly linked to the performance of the ITER actuators and diagnostics. The capabilities of those systems need to be carefully validated against the control needs. System and performance requirements shall be consistent with the control schemas and where limitations or restrictions are identified, it is necessary to provide alternative solutions. To guarantee this consistency, a set of interface documents is being prepared. Those interfaces for each of the plant systems that can impact the PCS activities detail the requirements specifically needed for control and report also the functional relationship between the two systems. PCS has also to consider areas not actively part of plasma control that might affect or limit PCS operations (i.e. forces in the superconducting coils).
This paper reports the main outcome from the interfaces definition. The actuator boundaries and plant systems constraints impacting the PCS design will be presented. For the sensors the challenge is the derivation of real-time measurement requirements in relation to the separate diagnostic requirements and their respective interface with PCS. The complex organization of data integration with the PCS will be discussed.
The paper will present the status of the development in these areas and the planned path of the PCS development.
Co-authors
Antonio Vergara
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Axel Winter
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Christopher Watts
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Franco Gandini
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
George Vayakis
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Inho Song
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Joseph Alan Snipes
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Lennart Svensson
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Luca Zabeo
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Mark Henderson
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Michael Lehnen
(Japan Atomic Energy Agency, Obuchi, Rokkasho-mura, Aomori-ken 039-3212, Japan)
Neil Mitchell
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Peter Christiaan De Vries
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
So Maruyama
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Tao Jun
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Toshihiro Oikawa
(Japan Atomic Energy Agency, Obuchi, Rokkasho-mura, Aomori-ken 039-3212, Japan)
Yang Yu
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
Yuri Gribov
(ITER Organization, Route de Vinon sur Verdon, CS 90 046, 13067 St. Paul-lez-Durance Cedex, France)
