association euratom – medc romania
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Association EURATOM – MEdC Romania. Overview of ten years of participation of the Romanian Association to the EURATOM research in thermonuclear fusion. The context: The scientific and political commitment imposed by fusion. ”Europe’s fusion research has a solid foundation, - PowerPoint PPT PresentationTRANSCRIPT
Overviewof ten years of participation of the Romanian
Association to the EURATOM research in thermonuclear fusion
The context: The scientific and political commitment imposed by fusion
”Europe’s fusion research has a solid foundation, with firmly established networks of excellence. We must give ourselves the best chance to build ITER in Europe...“
Philippe Busquin, press release of Council of Ministers, 13 May 2003
“The president has made achieving commercial fusion power the highest long-term energy priority for our Nation”
USA DoE Office of Science Strategic Plan, February, 2004
“China wants to be the first nation to generate electricity from fusion”
Chinese minister, when China joined ITER, January 2003
Faster than computers
Source: Lopez Cardoso
Essentials of the history of ten years expansion
1999: Assessment of our expertise. What Romania can offer to the fusion community?
2005: 42 researchers, 1,053 million Euro, 9 Associations
2009: 28 Task Agreements (contracts with EFDA and EFDA-JET)Topical groups (transport, MHD, diagnostics, etc.)Plasma Wall InteractionIntegrated Tokamak ModelingMaterials
Baseline expenditure structure(Physics, JET Notifications, UnderliTechnology)
Expenditure structure evolution(Baseline, Technology Tasks, Art. 5.1b,
Art. 6.3
PUBLICATIONS 2002-2008: 194 articles (including 108 in ISI journals) 219 contributions at conferences
ISI papers / year Papers / main journals
ISI papers / activity type ISI papers / physics domain
Major research fields where MEdC Association has made contributions
Basic physics of fusion plasmaTransport, MHD, diagnostics, sheats
Physics Integration (ceramics, optical fibers)Magnet structure and integrationTritium inventory controlTritium Breeding and Materials
Materials DevelopmentIFMIF, Test FacilitiesIFMIF, Design Integration
Fuel CycleAtomic and Nuclear data basesPlasma Facing components (JET)ITER-like Wall Project (JET)
Physics of fusion plasmasPhysics of instabilities, turbulence and transport in tokamak plasmas
Statistical physics for anomalous transport in plasmasMathematical modeling of transport processesNumerical simulations of transport in stochastic fields
Results:
10 researchers, collaborations with CEA, ULB, ENEA, JET
The Decorrelation Trajectory Method: diffusion in turbulent plasma
Hamiltonian dynamicsand stochastic processes
Physics of fusion plasmasCoherent flows in plasmas
Rotation of plasmaas cuasi-coherent flows
(analytic and numeric)
Magnetic configurations and Resistive Wall Modes
Perturbed magnetic field and stream function U of the induced eddy currents given by an EKM.
Tritium technology
Tritium permeation into various materialsWater Detritiation System: endurance test catalyst - packing mixtureStandard parts catalogues in CATIA V5 for tritium-containing systemsDevelopment of 2-D and 3-D symbols for WDS components
Assesment of detritiation with Ar plasma torch
Installation for studies on Water Detritiation
ASSESSMENT OF DETRITIATION WITH A SMALL Ar PLASMA TORCH
Figure 7a. Image of the plasma torch during scanning procedure
0 10 20 30 40 50 60 70 80
0.23
0.24
0.25
0.26
m/t ~ 2.5 10-4 g/min
scanned surface = 170 mm2
density =2700 kg/m3
erosion rate: 0.5m/min
m [
g]
t [min]
Figure 7b. Mass variation of a CFC sample with the treatment time
Easy access to details of wall.
Collaboration with CEA.
Technology for fusion applicationsSuperconductors
Fabrication of YBCO high temperature superconducting coated conductorsNbAl multifilamentary strands for fabrication of Nb3 Al superconducting conductorsDeposition of thick YBCO films on metallic substrates (chemical)
SEM image of YBCO film grown on CeO2/YSZ/CeO2/Pd buffered Ni-W substrate at 8500C at two different magnifications (left 20.00 K X and right 135.66 K X ).
Technology for fusion applicationsIrradiated ceramics and optical fibers
Visible-UV response of optical fibres to gamma irradiation
Effects on semiconductor optical detectors of gamma-ray and electron beamRadiation
Ionizing and neutron-irradiation effects on optoelectroniccomponents (semiconductor lasers and embedded detector)
UV transmission for large diameter optical fibres
X-ray micro-tomography
Non-destructives analysis of fusion materials samples by microtomography (2003)
Implementation of suitable NDT inspection methods for the structural integrity assessment of instrumented capsules and rigs by micro-tomography (2004)
X-ray microtomography for HFTM capsules and rigs
Influence of the sample radioactivity on the tomographic reconstruction quality (2005)
Cross-sections of the 3D tomographic reconstruction of the HFTM irradiation capsule obtained for optimum combination of the irradiation parameters (High Voltage= 220 kV, X-ray tube current ~ 300 mA) with full object scanning geometry
IFMIF / EVEDA requests
Nuclear Data
Comparison of calculated and experimental [11] neutron total cross sections (left), and the corresponding collective inelastic scattering cross sections obtained by DWBA method for 55Mn nucleus
First Romanian contribution to ITER
Enhancement of gamma-ray diagnostics at JET
JET KN3 neutron/gamma diagnostics with neutron attenuators and their steering and control system (LUC: Local Unit Cubicle); HC-NA: Horizontal Camera Neutron Attenuator; VC-NA: Vertical Camera Neutron Attenuator
Vertical Camera Neutron Attenuator prototype
Optimization and Manufacturing of 10 m W-coatings for the CFC tiles to be installed in JET
W coated tiles during the HHF testCMSII coating equipment general view
ITER-like Wall at JET
Extension to JET divertor 2009
CMSII discharge with 6 magnetrons running
Tungsten markers deposited on various substrates by CMSII technology
To measure net errosion of W on divertor tiles
PRODUCTION OF BERYLLIUM COATINGS FOR INCONEL CLADDING AND BERYLLIUM TILE MARKERS FOR THE ITER-LIKE WALL PROJECT
Thermionic vacuum arc (TVA) method
Beryllium coatings on inconel: (a) “as produced”; (b) after HHF test of 20 MJ m-2.
Interest expressed by Fusion for Energy, for ITER applications (2009)
Photograph of the equipment used for Beryllium tile Markers coatings
Conclusions
Major achievements:physics: decorrelation trajectory methodW- and Be – coating on JET Wall micro-tomographydiagnostics
Missed opportunities High Performance Computer for Fusion Physics
PerspectivesITER participation with Tritium, Beryllium and Nuclear data
Still to solve:Do-we have a strategy for ITER?Are-we at the periphery or on the main stream?How to conserve the physics expertise
Suggested perspective: after ten years of challenging experience, we will certainly find the correct answer