A first approach to runaway electron control in FTU Articles uri icon

authors

  • BONCAGNI, L.
  • CARNEVALE, D.
  • CIANFARANI, C.
  • ESPOSITO ., B
  • GRANUCCI, G.
  • MADDALUNO, G
  • MAROCCO, D.
  • MARTIN SOLIS, JOSE RAMON
  • PUCELLA, G.
  • SOZZI, C
  • VARANO, G.
  • VITALE, V
  • ZACCARIAN, L.

publication date

  • October 2013

start page

  • 1109

end page

  • 1112

issue

  • 6-8

volume

  • 88

international standard serial number (ISSN)

  • 0920-3796

electronic international standard serial number (EISSN)

  • 1873-7196

abstract

  • The Plasma Control System (PCS) of the Frascati Tokamak Upgrade (FTU) is not equipped with any runaway electron (RE) beam control or suppression tool. In this paper we propose an upgraded PCS including an architecture for the control of disruption-generated REs that, making use of filtering techniques to estimate the onsets of the current quench (CQ) and of the RE beam current plateau, provides a controlled plasma current shut-down and a simultaneous RE position control. The control strategy is based on a nonlinear technique, called Input Allocation, that allows to re-configure the current in the poloidal field (PF) coils and improve the PCS responsiveness needed for RE position control. Preliminary results on the implementation of the Input Allocation and an experimental proposal to test the control scheme architecture are discussed.

keywords

  • tokamak