IPAC2014 - List of Authors (Medeiros-Romao, L.)

Paper	Title	Page
THPRO099	Toward a Virtual Accelerator Control System for the MYRRHA Linac	3122
	J.-P. Carneiro Fermilab, Batavia, Illinois, USA J.-L. Biarrotte IPN, Orsay, France F. Bouly LPSC, Grenoble Cedex, France L. Medeiros Romão, R. Salemme, D. Vandeplassche SCK•CEN, Mol, Belgium D. Uriot CEA/DSM/IRFU, France
	The MYRRHA project currently under development at Mol, Belgium, is an Accelerator Driven System expected to be operational in 2023 with the primary purpose to study the feasibility of efficiently transmuting nuclear waste products into isotopes with much shorter lifetimes. The reactor, which is expected to have a thermal power of ~70 MW, may be operated in subcritical mode when fed by spallation neutrons obtained from a 600 MeV superconducting proton linac hitting a Liquid Pb-Bi eutectic (LBE) target with an average current of 4 mA. The challenging aspect of the MYRRHA linac resides in its very high availability (close to 100%) with a Mean Time Between Failure expected to be higher than 250 hours. This paper presents the strategic approach taken during the design of the linac and its foreseen operation to fulfill this stringent requirement. In particular we will describe the concept of a beam dynamics based control system also called Virtual Accelerator which will be mandatory for the operation of such linac.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO099
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THPRO115	Control System Design Considerations for MYRRHA ADS	3162
	R. Modic, G. Pajor, K. Žagar Cosylab, Ljubljana, Slovenia L. Medeiros Romão, R. Salemme, D. Vandeplassche SCK•CEN, Mol, Belgium
	The accelerator (ACC) is the first step of the accelerator driven system (ADS). A high power continuous wave ACC is required for ADS applications. An essential aspect of ACC is beam availability. It must be an order of magnitude better than current best systems. High availability is achieved by fault tolerance and redundancy of the ACC. Three factors play a key role here: use of components in a high MTBF regime, parallel and serial redundancy of components, ability to repair failing elements. In terms of ACC controls system (CS) EPICS and Linux is chosen as proven technology. High availability will be achieved through making parts of the CS redundant. Subsystems shall be redundant by design. If failure of a subsystem is detected, pre-defined scenarios should kick-in. System model or "virtual accelerator" can be implemented to predict effects of parameter change, determine required configuration of set points for optimal performance or re-configuration in case of sub-system failure. Implementation of predictive diagnostics can harvest large amount of data created by archiving service. Prediction of failure allows for controlled shutdown as opposed to abrupt stop.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO115
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Toward a Virtual Accelerator Control System for the MYRRHA Linac

3122

J.-P. Carneiro
Fermilab, Batavia, Illinois, USA
J.-L. Biarrotte
IPN, Orsay, France
F. Bouly
LPSC, Grenoble Cedex, France
L. Medeiros Romão, R. Salemme, D. Vandeplassche
SCK•CEN, Mol, Belgium
D. Uriot
CEA/DSM/IRFU, France

The MYRRHA project currently under development at Mol, Belgium, is an Accelerator Driven System expected to be operational in 2023 with the primary purpose to study the feasibility of efficiently transmuting nuclear waste products into isotopes with much shorter lifetimes. The reactor, which is expected to have a thermal power of ~70 MW, may be operated in subcritical mode when fed by spallation neutrons obtained from a 600 MeV superconducting proton linac hitting a Liquid Pb-Bi eutectic (LBE) target with an average current of 4 mA. The challenging aspect of the MYRRHA linac resides in its very high availability (close to 100%) with a Mean Time Between Failure expected to be higher than 250 hours. This paper presents the strategic approach taken during the design of the linac and its foreseen operation to fulfill this stringent requirement. In particular we will describe the concept of a beam dynamics based control system also called Virtual Accelerator which will be mandatory for the operation of such linac.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO099

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPRO115

Control System Design Considerations for MYRRHA ADS

3162

R. Modic, G. Pajor, K. Žagar
Cosylab, Ljubljana, Slovenia
L. Medeiros Romão, R. Salemme, D. Vandeplassche
SCK•CEN, Mol, Belgium

The accelerator (ACC) is the first step of the accelerator driven system (ADS). A high power continuous wave ACC is required for ADS applications. An essential aspect of ACC is beam availability. It must be an order of magnitude better than current best systems. High availability is achieved by fault tolerance and redundancy of the ACC. Three factors play a key role here: use of components in a high MTBF regime, parallel and serial redundancy of components, ability to repair failing elements. In terms of ACC controls system (CS) EPICS and Linux is chosen as proven technology. High availability will be achieved through making parts of the CS redundant. Subsystems shall be redundant by design. If failure of a subsystem is detected, pre-defined scenarios should kick-in. System model or "virtual accelerator" can be implemented to predict effects of parameter change, determine required configuration of set points for optimal performance or re-configuration in case of sub-system failure. Implementation of predictive diagnostics can harvest large amount of data created by archiving service. Prediction of failure allows for controlled shutdown as opposed to abrupt stop.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO115

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)