ICALEPCS2011 - List of Authors (Carvalho, P.J.)

Paper

Title

Page

Real-time Protection of the "ITER-like Wall at JET"

1096

M.B. Jouve, C. Balorin
Association EURATOM-CEA, St Paul Lez Durance, France
G. Arnoux, S. Devaux, D. Kinna, P.D. Thomas, K-D. Zastrow
CCFE, Abingdon, Oxon, United Kingdom
P.J. Carvalho
IPFN, Lisbon, Portugal
J. Veyret
Sundance France, Matignon, France

During the last JET tokamak shutdown a new ITER-Like Wall was installed using Tungsten and Beryllium materials. To ensure plasma facing component (PFC) integrity, the real-time protection of the wall has been upgraded through the project "Protection for the ITER-like Wall" (PIW). The choice has been made to work with 13 CCD robust analog cameras viewing the main areas of plasma wall interaction and to use regions of interest (ROI) for monitoring in real time the surface temperature of the PFCs. For each camera, ROIs will be set up pre-pulse and, during plasma operation, surface temperatures from these ROIs will be sent to the real time processing system for monitoring and eventually preventing damages on PFCs by modifying the plasma parameters. The video and the associated control system developed for this project is presented in this paper. The video is captured using PLEORA frame grabber and it is sent on GigE network to the real time processing system (RTPS) divided into a 'Real time processing unit' (RTPU), for surface temperature calculation, and the 'RTPU Host', for connection between RTPU and other systems. The RTPU design is based on commercial Xilinx Virtex5 FPGA boards with one board per camera and 2 boards per host. Programmed under Simulink using System generator blockset, the field programmable gate array (FPGA) can manage simultaneously up to 96 ROI defined pixel by pixel.

Poster WEPMU018 [2.450 MB]

THDAULT06

MARTe Framework: a Middleware for Real-time Applications Development

1277

A. Neto, D. Alves, B. Carvalho, P.J. Carvalho, H. Fernandes, D.F. Valcárcel
IPFN, Lisbon, Portugal
A. Barbalace, G. Manduchi
Consorzio RFX, Associazione Euratom-ENEA sulla Fusione, Padova, Italy
L. Boncagni
ENEA C.R. Frascati, Frascati (Roma), Italy
G. De Tommasi
CREATE, Napoli, Italy
P. McCullen, A.V. Stephen
CCFE, Culham, Abingdon, Oxon, United Kingdom
F. Sartori
F4E, Barcelona, Spain
R. Vitelli
Università di Roma II Tor Vergata, Roma, Italy
L. Zabeo
ITER Organization, St. Paul lez Durance, France

Funding: This work was supported by the European Communities under the contract of Association between EURATOM/IST and was carried out within the framework of the European Fusion Development Agreement
The Multi-threaded Application Real-Time executor (MARTe) is a C++ framework that provides a development environment for the design and deployment of real-time applications, e.g. control systems. The kernel of MARTe comprises a set of data-driven independent blocks, connected using a shared bus. This modular design enforces a clear boundary between algorithms, hardware interaction and system configuration. The architecture, being multi-platform, facilitates the test and commissioning of new systems, enabling the execution of plant models in offline environments and with the hardware-in-the-loop, whilst also providing a set of non-intrusive introspection and logging facilities. Furthermore, applications can be developed in non real-time environments and deployed in a real-time operating system, using exactly the same code and configuration data. The framework is already being used in several fusion experiments, with control cycles ranging from 50 microseconds to 10 milliseconds exhibiting jitters of less than 2%, using VxWorks, RTAI or Linux. Codes can also be developed and executed in Microsoft Windows, Solaris and Mac OS X. This paper discusses the main design concepts of MARTe, in particular the architectural choices which enabled the combination of real-time accuracy, performance and robustness with complex and modular data driven applications.

Slides THDAULT06 [1.535 MB]

Paper	Title	Page
WEPMU018	Real-time Protection of the "ITER-like Wall at JET"	1096
	M.B. Jouve, C. Balorin Association EURATOM-CEA, St Paul Lez Durance, France G. Arnoux, S. Devaux, D. Kinna, P.D. Thomas, K-D. Zastrow CCFE, Abingdon, Oxon, United Kingdom P.J. Carvalho IPFN, Lisbon, Portugal J. Veyret Sundance France, Matignon, France
	During the last JET tokamak shutdown a new ITER-Like Wall was installed using Tungsten and Beryllium materials. To ensure plasma facing component (PFC) integrity, the real-time protection of the wall has been upgraded through the project "Protection for the ITER-like Wall" (PIW). The choice has been made to work with 13 CCD robust analog cameras viewing the main areas of plasma wall interaction and to use regions of interest (ROI) for monitoring in real time the surface temperature of the PFCs. For each camera, ROIs will be set up pre-pulse and, during plasma operation, surface temperatures from these ROIs will be sent to the real time processing system for monitoring and eventually preventing damages on PFCs by modifying the plasma parameters. The video and the associated control system developed for this project is presented in this paper. The video is captured using PLEORA frame grabber and it is sent on GigE network to the real time processing system (RTPS) divided into a 'Real time processing unit' (RTPU), for surface temperature calculation, and the 'RTPU Host', for connection between RTPU and other systems. The RTPU design is based on commercial Xilinx Virtex5 FPGA boards with one board per camera and 2 boards per host. Programmed under Simulink using System generator blockset, the field programmable gate array (FPGA) can manage simultaneously up to 96 ROI defined pixel by pixel.
	Poster WEPMU018 [2.450 MB]

THDAULT06	MARTe Framework: a Middleware for Real-time Applications Development	1277
	A. Neto, D. Alves, B. Carvalho, P.J. Carvalho, H. Fernandes, D.F. Valcárcel IPFN, Lisbon, Portugal A. Barbalace, G. Manduchi Consorzio RFX, Associazione Euratom-ENEA sulla Fusione, Padova, Italy L. Boncagni ENEA C.R. Frascati, Frascati (Roma), Italy G. De Tommasi CREATE, Napoli, Italy P. McCullen, A.V. Stephen CCFE, Culham, Abingdon, Oxon, United Kingdom F. Sartori F4E, Barcelona, Spain R. Vitelli Università di Roma II Tor Vergata, Roma, Italy L. Zabeo ITER Organization, St. Paul lez Durance, France
	Funding: This work was supported by the European Communities under the contract of Association between EURATOM/IST and was carried out within the framework of the European Fusion Development Agreement The Multi-threaded Application Real-Time executor (MARTe) is a C++ framework that provides a development environment for the design and deployment of real-time applications, e.g. control systems. The kernel of MARTe comprises a set of data-driven independent blocks, connected using a shared bus. This modular design enforces a clear boundary between algorithms, hardware interaction and system configuration. The architecture, being multi-platform, facilitates the test and commissioning of new systems, enabling the execution of plant models in offline environments and with the hardware-in-the-loop, whilst also providing a set of non-intrusive introspection and logging facilities. Furthermore, applications can be developed in non real-time environments and deployed in a real-time operating system, using exactly the same code and configuration data. The framework is already being used in several fusion experiments, with control cycles ranging from 50 microseconds to 10 milliseconds exhibiting jitters of less than 2%, using VxWorks, RTAI or Linux. Codes can also be developed and executed in Microsoft Windows, Solaris and Mac OS X. This paper discusses the main design concepts of MARTe, in particular the architectural choices which enabled the combination of real-time accuracy, performance and robustness with complex and modular data driven applications.
	Slides THDAULT06 [1.535 MB]