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Title: A simulation environment for ITER PCS development

A simulation environment known as the Plasma Control System Simulation Platform (PCSSP), specifically designed to support development of the ITER Plasma Control System (PCS), is currently under construction by an international team encompassing a cross-section of expertise in simulation and exception handling for plasma control. The proposed design addresses the challenging requirements of supporting the PCS design. This work provides an overview of the PCSSP project and a discussion of some of the major features of its design. Plasma control for the ITER tokamak will be significantly more challenging than for existing fusion devices. An order of magnitude greater performance is needed for some types of control, which together with limited actuator authority, implies that optimized individual controllers and nonlinear saturation logic are required. At the same time, consequences of control failure are significantly more severe, which implies a conflicting requirement for robust control. It also implies a requirement for comprehensive and robust exception handling. Coordinated control of multiple competing objectives with significant interactions, together with many shared uses of actuators to control multiple variables, implies that highly integrated control logic and shared actuator management will be required. It remains a challenge for the integrated technologies to simultaneously address thesemore » multiple and often competing requirements to be demonstrated on existing fusion devices and adapted for ITER in time to support its operational schedule. We describe ways in which the PCSSP will help address these challenges to support design of both the ITER PCS itself and the algorithms that will be implemented therein. and at the same time greatly reduce the cost of that development. We summarize the current status of the PCSSP design task, including system requirements and preliminary design documents already delivered as well as features of the ongoing detailed architectural design. The methods being incorporated in the detailed design are based on prior experience with control simulation environments in fusion and on standard practices prevalent in development of control-intensive industrial product designs.« less
Authors:
 [1] ;  [2] ;  [2] ;  [1] ;  [3] ;  [4] ;  [4] ; ORCiD logo [4] ;  [5]
  1. General Atomics, San Diego, CA (United States)
  2. Univ. of Naples Federico II, Naples (Italy). Research Consortium for Energy (CREATE)
  3. Second Univ. of Naples, Naples (Italy)
  4. Max-Planck Inst. for Nuclear Physics, Garching (Germany). European Atomic Energy Community (EURATOM)
  5. ITER Organization, St. Paul Lez Durance (France)
Publication Date:
Grant/Contract Number:
FC02-04ER54698; ITER/CTS/6000000037
Type:
Accepted Manuscript
Journal Name:
Fusion Engineering and Design
Additional Journal Information:
Journal Volume: 89; Journal Issue: 5; Journal ID: ISSN 0920-3796
Publisher:
Elsevier
Research Org:
General Atomics, San Diego, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 43 PARTICLE ACCELERATORS; plasma control system; simulation; architecture
OSTI Identifier:
1463900

Walker, M. L., Ambrosino, G., De Tommasi, G., Humphreys, D. A., Mattei, M., Neu, G., Raupp, G., Treutterer, W., and Winter, A.. A simulation environment for ITER PCS development. United States: N. p., Web. doi:10.1016/j.fusengdes.2014.02.009.
Walker, M. L., Ambrosino, G., De Tommasi, G., Humphreys, D. A., Mattei, M., Neu, G., Raupp, G., Treutterer, W., & Winter, A.. A simulation environment for ITER PCS development. United States. doi:10.1016/j.fusengdes.2014.02.009.
Walker, M. L., Ambrosino, G., De Tommasi, G., Humphreys, D. A., Mattei, M., Neu, G., Raupp, G., Treutterer, W., and Winter, A.. 2014. "A simulation environment for ITER PCS development". United States. doi:10.1016/j.fusengdes.2014.02.009. https://www.osti.gov/servlets/purl/1463900.
@article{osti_1463900,
title = {A simulation environment for ITER PCS development},
author = {Walker, M. L. and Ambrosino, G. and De Tommasi, G. and Humphreys, D. A. and Mattei, M. and Neu, G. and Raupp, G. and Treutterer, W. and Winter, A.},
abstractNote = {A simulation environment known as the Plasma Control System Simulation Platform (PCSSP), specifically designed to support development of the ITER Plasma Control System (PCS), is currently under construction by an international team encompassing a cross-section of expertise in simulation and exception handling for plasma control. The proposed design addresses the challenging requirements of supporting the PCS design. This work provides an overview of the PCSSP project and a discussion of some of the major features of its design. Plasma control for the ITER tokamak will be significantly more challenging than for existing fusion devices. An order of magnitude greater performance is needed for some types of control, which together with limited actuator authority, implies that optimized individual controllers and nonlinear saturation logic are required. At the same time, consequences of control failure are significantly more severe, which implies a conflicting requirement for robust control. It also implies a requirement for comprehensive and robust exception handling. Coordinated control of multiple competing objectives with significant interactions, together with many shared uses of actuators to control multiple variables, implies that highly integrated control logic and shared actuator management will be required. It remains a challenge for the integrated technologies to simultaneously address these multiple and often competing requirements to be demonstrated on existing fusion devices and adapted for ITER in time to support its operational schedule. We describe ways in which the PCSSP will help address these challenges to support design of both the ITER PCS itself and the algorithms that will be implemented therein. and at the same time greatly reduce the cost of that development. We summarize the current status of the PCSSP design task, including system requirements and preliminary design documents already delivered as well as features of the ongoing detailed architectural design. The methods being incorporated in the detailed design are based on prior experience with control simulation environments in fusion and on standard practices prevalent in development of control-intensive industrial product designs.},
doi = {10.1016/j.fusengdes.2014.02.009},
journal = {Fusion Engineering and Design},
number = 5,
volume = 89,
place = {United States},
year = {2014},
month = {3}
}