Laurent Marot
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Postdoc PhD in Physics office 3.01a tel +41 (0)61 267 3725 (office) |
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Research interest
Electron Spectroscopy for Chemical Analysis (ESCA)
Fusion: Plasma-wall interaction studies related to fusion reactor materials
In a fusion reactor, and especially in the International Thermonuclear Experimental Reactor (ITER),
knowledge of the plasma parameters is of highest interest to control and understand the
performances of such a device. In today's tokamaks, the plasma is viewed through optical windows
or fibre optics for many diagnostics. However, the high level of radiation expected in ITER will
render this conventional approach impossible.
Metallic mirrors will be used either as plasma-facing components or as light transmitter through a
labyrinth, and therefore the first mirror (FM) will be one of the most critical elements of ITER
diagnostics systems. It must survive in an extreme environment (intense UV and X-rays radiation
as well as particle fluxes due to charge exchange neutrals) and has to maintain a good optical
performance.
In Basel research is focused on the investigation of the erosion and deposition mechanisms
affecting the optical reflectivity of potential materials for first mirrors of ITER both by active
collaborations with groups from different Tokamak sites and by simulation in laboratory
experiments.
Another part is the preparation of metallic coated mirrors by magnetron sputtering or
evaporation, to obtain nanometric crystallites films, like rhodium or molybdenum, with
a high reflectivity.
The last topic is to study the interaction of the first wall (tungsten) of fusion reactor
with several plasma especially for DEMO (DEMOnstration Power Plant).
Publications
| M, Joanny, J.M. Travere, S. Salasca, L. Marot, E. Meyer, C.Thellier, C. Cammarata, G. Gallay, J.J Ferme Achievements on Engineering and Manufacturing of ITER First Mirrors mock-ups IEEE Transactions on Plasma Science, 40, (3), (2012), 692-696, pdf. |
| M. Wisse, B. Eren, L. Marot, R. Steiner, E. Meyer Spectroscopic reflectometry of mirror surfaces during plasma exposure Rev Sci Instrum., 83, (2012), 013509, pdf. |
| G.A. Naylor, R. Scannell, M. Beurskens, M.J. Walsh, I. Pastor, A.J.H. Donné, B. Snijders, W. Biel, B. Meszaros, L. Giudicotti, R. Pasqualotto and L. Marot The ITER Thomson scattering core LIDAR diagnostic Journal of Instrumentation, 7, (2012), C03043, pdf. |
| P. Rickhaus, M. Weiss, L. Marot, C. Schönenberger Quantum Hall Effect in Graphene with Superconducting Electrodes Nano Letters, 12, (2012), 1942, pdf. |
| M. Kisiel, E. Gnecco, U. Gysin, L. Marot, S. Rast, E. Meyer Suppression of electronic friction on Nb films in the superconducting state Nature Materials, 10, (1), (2011), pdf. |
| G. De Temmerman, J. J. Zielinski, S. van Diepen, L. Marot, M. Price ELM simulation experiments on Pilot-PSI using simultaneous high flux plasma and transient heat/particle source Nuclear Fusion, 51, (2011), 073008, pdf. |
| A. Litnovsky, V. Philipps, P. Wienhold, M. Matveeva, A. Pospieszczyk, G. Sergienko, O. Schmitz, U. Samm, H. Stoschus, C. Schulz, L. Marot, A. Romanyuk, G. De Temmerman, M. Laengner, U. Breuer, A. Stärk, TEXTOR Team Active control over carbon deposition on diagnostic components and in remote areas of ITER Journal of Nuclear Materials, 417, (2011), 830–833, pdf. |
| B. Eren, L. Marot, A. Litnovsky, M. Matveeva, R. Steiner, V. Emberger, M. Wisse, D. Mathys, G. Covarel, E. Meyer Reflective metallic coatings for first mirrors on ITER Fusion Engineering and Design, 86, (9-11), (2011), 2593-6, pdf. |
| B. Eren, L. Marot, M. Langer, R. Steiner, M. Wisse, D. Mathys, E. Meyer The effect of low temperature deuterium plasma on molybdenum reflectivity Nuclear Fusion, 51, (2011), 103025, pdf. |
| A. Litnovsky, M. Laengner, M. Matveeva, Ch. Schulz, L. Marot, V.S. Voitsenya, V. Philipps, W. Biel, U. Samm Development of in situ cleaning techniques for diagnostic mirrors in ITER Fusion Engineering and Design, 86, (2011), 1780-1783, pdf. |
| L. Marot, R. Steiner, M. Gantenbein, D. Mathys, E. Meyer Co-deposition of rhodium and tungsten films for the first-mirror on ITER Journal of Nuclear Materials, 415, (2011), S1203–S1205, pdf. |
| K. Bystrov, J. Westerhout, M. Matveeva, A. Litnovsky, L. Marot, E. Zoethout, G. De Temmerman Erosion yields of carbon under various plasma conditions in Pilot-PSI Journal of Nuclear Materials, 415, (2011), S149–S152, pdf. |
| M. Rubel, V. Philipps, L. Marot, P. Petersson, A. Pospieszczyk, B. Schweer Nitrogen and neon retention in plasma-facing materials Journal of Nuclear Materials, 415, (2011), S223–S226, pdf. |
| M. Rubel, D. Ivanova, J.P. Coad, G. De Temmerman, J. Likonen, L. Marot, A. Schmidt, A. Widdowson Overview of the Second Stage in the Comprehensive Mirrors test in Jet Physica Scripta, T145, (2011), 014070, pdf. |
| N. Gierse,, S Brezinsek, T. F. Giesen, A. Huber, M. Laengner, R. Leyte-Gonzales, L. Marot, E. Meyer, S. Möller, M. Naiim-Habib, V. Philipps, A. Pospieszczyk, B. Schweer, G. Sergienko, M. Zlobinski, U. Samm and the TEXTOR team Characterization of hydrocarbon and mixed layers in TEXTOR by laser induced ablation spectroscopy Phys. Scr., T145, (2011), 014026, pdf. |
| M. Joanny, J. M. Travère, S. Salasc, Y. Corre, L. Marot, C. Thellier, G. Gallay, C. Cammarata, B. Passier, J. J. Fermé Engineering and manufacturing of ITER first mirror mock-ups Review of Scientific Instruments, 81, (2010), 10E108 , pdf. |
| L. Marot , R. Schoch, R. Steiner, E. Meyer Rhodium and silicon system: I. Glassy metallic alloy formation Nanotechnology, 21, (2010), 365706 , pdf. |
| L. Marot, R. Schoch, R. Steiner, V. Thommen, D. Mathys, E. Meyer Rhodium and silicon system: II. Rhodium silicide formation Nanotechnology, 21, (2010), 365707, pdf. |
| L. Marot, R. Steiner, G. De Temmerman, P. Oelhafen Reactivity of rhodium during co-deposition of rhodium and carbon J. Nucl. Mater., 390-391, (2009), 1135, pdf. |
| P. Sundelin, C. Schulz, V. Philipps, M. Rubel, G. Sergienko, L. Marot Nitrogen-assisted removal of deuterated carbon layers J. Nucl. Mater., 390-391, (647), (2009), pdf. |
| G. De Temmerman, R. P. Doerner, P. John, S. Lisgo, A. Litnovsky, L. Marot, S. Porro, P. Petersson, M. Rubel, D. L. Rudakov, G. Van Rooij, J. Westerhout, J. I. B. Wilson Interactions of diamond surfaces with fusion relevant plasmas PHYSICA SCRIPTA, T138, (2009), 014013, pdf. |
| J. Rapp, G. J. van Rooij, A. Litnovsky, L. Marot, G. De Temmerman, J. Westerhout, E. Zoethout Temperature effect on hydrocarbon deposition on molybdenum mirrors under ITER-relevant long-term plasma operation PHYSICA SCRIPTA, T138, (2009), 014067, pdf. |
| D. L. Rudakov, C. Wong, A. Litnovsky, W. Wampler, J. A. Boedo, N. H. Brooks, M. E. Fenstermacher, M. Groth, E. M. Hollmann, W. Jacob, S. I. Krasheninnikov, K . Krieger, C. J. Lasnier, A.W. Leonard, A. G. McLean, L. Marot, R. A. Moyer, T.W. Petrie, V. Philipps, R .D. Smirnov, P. C. Stangeby, J. G. Watkins, W.P. West, J. H . Yu Overview of the recent DiMES and MiMES experiments in DIII-D PHYSICA SCRIPTA, T138 , (2009), 014007, pdf. |
| L. Marot, D. Mathys, G. De Temmerman and P. Oelhafen Characterization of sub-stoichiometric rhodium oxide deposited by magnetron sputtering Surf. Sci. 602 (2008) 3375., 602, (2008), 3375, pdf. |
| K.-D. Zastrow, S. R. Keatings, L. Marot, M. G. OMullane, G. de Temmerman and JET-EFDA Contributors Modeling the effect of reflection from metallic walls on spectroscopic measurements Rev. Sci. Instrum., 79, (2008), 10F527, pdf. |
| A. Romanyuk, R. Steiner, L. Marot, V. Spassov and P. Oelhafen nc-VO2/Al2O3 nanocomposite films prepared by dual target magnetron sputtering Thin Solids Films, 516, (2008), 8513, pdf. |
| L. Marot, G. Covarel, M.-H. Tuilier, R. Steiner, and P. Oelhafen Adhesion of rhodium films on metallic substrates Thin Solids Films, 516, (2008), 7604, pdf. |
| L. Marot, G. De Temmerman, V. Thommen, D. Mathys and P. Oelhafen Characterization of magnetron sputtered rhodium films for reflective coatings Surf. Coat. Tech., 202, (2008), 2837, pdf. |
| A. Romanyuk, R. Steiner, L. Marot and P. Oelhafen Temperature-induced metal-semiconductor transition in W-doped VO2 films studied by photoelectron spectroscopy Solar Energy Materials and Solar Cells, 91/19, (2007), 1831, pdf. |
| L. Marot, G. De Temmerman, G. Covarel, A. Litnovsky, P. Oelhafen Rhodium-coated mirrors deposited by magnetron sputtering for fusion applications Rev Sci Instrum. , 78, (2007), 103507, pdf. |
| G. De Temmerman, M. J. Baldwin, R. P. Doerner, D. Nishijima, R. Seraydarian, K. Schmid, F. Kost, Ch. Linsmeier, and L. Marot Beryllium deposition on International Thermonuclear Experimental Reactor first mirrors: Layer morphology and influence on mirror reflectivity J. Appl. Phys., 102, (2007), 083302 , pdf. |
| G. De Temmerman, R.A. Pitts, V.S. Voitsenya, L. Marot, G. Veres, M. Maurer, and P. Oelhafen First mirror tests for ITER: influence of material choice on the erosion/deposition mechanisms affecting optical reflectivity J. Nucl. Mater. , 363-365, (2007), 259, pdf. |
| A. Romanyuk, L. Marot, R. Steiner, P. Oelhafen, D. Mathys Thermal coloration of tungsten oxide films: effect of crystallinity SVC 50th Annual Technical Conference Proceedings, 1, (2007), 576-8, pdf. |
| L. Marot, F. Munnik and S. Mikhaïlov Direct writing of microtunnels using proton beam micromachining Applied Surface Science, 252, (2006), 7343-7346, pdf. |
| C. Meunier, P. Alers, L. Marot, J. Stauffer, N. Randall, S. Mikhailov Friction properties of ta-C and a-C:H coatings under high vacuum Surf. Coat. Tech., 200, (2005), 1976-1981, pdf. |
| L. Marot, M. Drouet, F.Berneau, A. Straboni High Temperature Plasma Based Ion Implantation of Titanium Alloys and Silicon Surf. Coating Technol, 156, (2002), 155-158, pdf. |
| L. Marot, E. Le Bourhis, A. Straboni Improved nitridation efficiency and mechanical behaviour of stainless steel surface after N2-H2 nitridation at low temperature Materials Letters, 56, (2002), 76-79, pdf. |
| L. Marot, H. Buscail, A. Straboni, F. Riffard, E. Caudron, R. Cueff X-ray diffraction analysis of the plasma nitridation of 304L steel - Influence of oxidation at 1000°C Journal de Physique IV, 12, (2002), 247-254, pdf. |
| L. Marot, M. Drouet, A. Straboni A new thermally Assisted Plasma based Ionic Implantation system of treatment and deposition Surf. Coating Technol, 142-144 , (2001), 384-387, pdf. |
| L. Marot, L. Pichon, M. Drouet, A. Straboni Improved Nitrogen Transport in Fe-C alloys during NH3 Plasma Nitridation Materials Letters , 44, (2000), 35-38, pdf. |