ICALEPCS2013 - List of Authors (Schmidt, R.)

Paper	Title	Page
MOPPC058	Design, Development and Implementation of a Dependable Interlocking Prototype for the ITER Superconducting Magnet Powering System	230
	M. Zaera-Sanz GSI, Darmstadt, Germany J. Burdalo Gil, I. Romera, R. Schmidt, M. Zerlauth CERN, Geneva, Switzerland
	Based on the experience with an operational interlock system for the superconducting magnets of the LHC, CERN has developed a prototype for the ITER magnet central interlock system in collaboration with ITER. A total energy of more than 50 Giga Joules is stored in the magnet coils of the ITER Tokamak. Upon detection of a quench or other critical powering failures, the central interlock system must initiate the extraction of the energy to protect the superconducting magnets and, depending on the situation, request plasma disruption mitigations to protect against mechanical forces induced between the magnet coils and the plasma. To fulfil these tasks with the required high level of dependability the implemented interlock system is based on redundant PLC technology making use of hardwired interlock loops in 2-out-of-3 redundancy, providing the best balance between safety and availability. In order to allow for simple and unique connectivity of all client systems involved in the safety critical protection functions as well as for common remote diagnostics, a dedicated user interface box has been developed.

Paper

Title

Page

Design, Development and Implementation of a Dependable Interlocking Prototype for the ITER Superconducting Magnet Powering System

230

M. Zaera-Sanz
GSI, Darmstadt, Germany
J. Burdalo Gil, I. Romera, R. Schmidt, M. Zerlauth
CERN, Geneva, Switzerland

Based on the experience with an operational interlock system for the superconducting magnets of the LHC, CERN has developed a prototype for the ITER magnet central interlock system in collaboration with ITER. A total energy of more than 50 Giga Joules is stored in the magnet coils of the ITER Tokamak. Upon detection of a quench or other critical powering failures, the central interlock system must initiate the extraction of the energy to protect the superconducting magnets and, depending on the situation, request plasma disruption mitigations to protect against mechanical forces induced between the magnet coils and the plasma. To fulfil these tasks with the required high level of dependability the implemented interlock system is based on redundant PLC technology making use of hardwired interlock loops in 2-out-of-3 redundancy, providing the best balance between safety and availability. In order to allow for simple and unique connectivity of all client systems involved in the safety critical protection functions as well as for common remote diagnostics, a dedicated user interface box has been developed.