{"id":2631,"date":"2021-06-23T16:28:25","date_gmt":"2021-06-23T14:28:25","guid":{"rendered":"https:\/\/www.protostep-forward.com\/?page_id=2631"},"modified":"2024-08-19T15:39:17","modified_gmt":"2024-08-19T13:39:17","slug":"qui-sommes-nous-en","status":"publish","type":"page","link":"https:\/\/www.protostep-forward.com\/index.php\/en\/qui-sommes-nous-en\/","title":{"rendered":"Qui sommes-nous ? – EN"},"content":{"rendered":"\t\t
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ProtoSTEP <\/span><\/span><\/span>was founded in 2019 based on our observations gained during various experiences in academic research and industrial R&D with one question:<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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How do we reliably and cost effectively manage the physics limitations of a prototype while also reducing development time?<\/em><\/h3>
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To combat this recurring problem, we provide industrial and scientific expertise with the support of the most modern multi-physics modeling tools in order to support companies in their R&D projects.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\"Aur\u00e9lien\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Aur\u00e9lien Lejeune, PhD<\/b><\/h3>

Co-founder and President of ProtoSTEP<\/span><\/span><\/span>, Head of Science & Technology\u00a0<\/h4>

After completing a BS and MS at Orsay Paris-Sud XI in Fundamental and Applied Physics and a specialization in Plasma Physics, Aur\u00e9lien obtained his PhD at the PIIM laboratory at the University of Aix-Marseille in 2010. His thesis focused on the development of a non-intrusive optical diagnostic for the measurement of local micro-fluctuations of electric fields in plasmas. This work was part of the development of new measuring instruments for the study of fusion plasmas in Tokamaks.<\/p>

As part of a CNES post-doctorate carried out at the ICARE institute in Orl\u00e9ans, he then contributed to the study and design of a Hall effect thruster dedicated to the use of Krypton for space propulsion and attitude control of probes and satellites.<\/p>

In 2012 he joined a French subsidiary of the American group AMETEK as Physicist and R&D project manager where he worked on the development of a product line dedicated to the analysis of X-rays emission from an unknown element put under an electron beam. The improvement of this instrument now allows new applications, particularly in geology, metallurgy, semiconductors or biology.<\/p>

In 2019, he created ProtoSTEP <\/span><\/span><\/span>in order to bring his physics and industrial expertise to support companies in their R&D projects.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Publications & Conferences<\/h4>

[1]<\/strong>\u2003EFILE : Electric Field Induced Lyman-\u03b1 Emission of a hydrogen beam for electric field measurements<\/i><\/a>, Rev. Sci. Intrum. 86<\/b>, 063504 (2015)
[2]<\/strong>\u2003Innovative measurement of Debye shielding in plasmas by Lyman-\u03b1 radiation of a probing metastable hydrogen beam<\/i><\/a>, AIP Conf. Proc. 1582<\/strong>, 261 (2014)
[3]<\/strong>\u2003Lyman- \u03b1 radiation of a probe atomic beam to explore the electric field in plasma sheaths<\/i><\/a>, EPL 104<\/strong>, 35001 (2013)
[4]<\/strong>\u2003Kr II and Xe II axial velocity distribution functions in a cross-field ion source<\/i><\/a>, Phys. of Plasmas 19<\/strong>, 073501 (2012)
[5]<\/strong>\u2003Lyman- \u03b1 radiation of a metastable hydrogen beam to measure electric fields<\/i><\/a>, Appl. Phys. Lett. 99<\/strong>, 181502 (2011)
[6]<\/strong>\u2003Impact of the channel width on Hall thruster discharge properties and performances<\/i><\/a>, IEPC-2011-019<\/strong>, 32nd IEPC, Wiesbaden, Germany (2011)
[7]<\/strong>\u2003Ion velocity evolution with channel width, magnetic topology and propellant in a 200 W Hall thruster<\/i><\/a>, IEPC-2011-123<\/strong>, 32nd IEPC, Wiesbaden, Germany (2011)
[8]<\/strong>\u2003Use of a hydrogen ion beam to measure weak electric fields in a plasma<\/i>, O2.407<\/strong>, 37th EPS Conference on Plasma Physics, Dublin, Ireland (2010)
[9]<\/strong>\u2003Study of hydrogen ion species in a multicusp ion source<\/i><\/a>, P1.186<\/strong>, 35th EPS Conference on Plasma Physics, Hersonissos, Crete (2008)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\"Claude\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Claude Lejeune, Engineer<\/h3>\n

Co-founder and Managing Director of ProtoSTEP<\/span><\/span><\/span>, Head of Technology & Sales<\/h4>\n

Claude started his career in the 1970s where he contributed to the development of various railway projects (Parisian metro MF77, Parisian RER MI84, TGV Atlantique, international projects in Venezuela, Brazil, Spain, etc.). In 1988 he founded a company specializing in safety measurement systems for railway equipment.<\/p>\n

He has also developed various current measurement systems, and filed patents on concepts such as measuring by shunt on a copper bar or a mobile armature with fictitious pivot axis (in order to eliminate parasitic torques from wear and friction and guarantee high precision of operating thresholds over time).<\/p>\n

In 2000, his company joined an international group working for the world’s largest railway manufacturers. Claude was responsible for the measurement relays and on-board electronic systems activity, thus continuing the development of new products covered by various patents.<\/p>\n

From 2007 to 2011, he was a representative and\u00a0 technical expert for the French committee to the European Commission for the drafting of the EN50463 standard concerning energy measurement on on-board railway systems.<\/p>\n

In 2019, he created ProtoSTEP<\/span><\/span><\/span> with Aur\u00e9lien.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Pattents<\/h4>

[1]<\/strong>\u2003Proc\u00e9d\u00e9 et dispositif de mesure du courant \u00e9lectrique fourni par une ligne haute tension \u00e0 un v\u00e9hicule ferroviaire<\/i><\/a>, EP2312327A1<\/strong> (2011)
[2]<\/strong>\u2003Dispositif de mesure de l’\u00e9nergie de \u00e9lectrique fournie \u00e0 un engin de traction ferroviaire<\/i><\/a>, EP1882954A1<\/strong> (2008)
[3]<\/strong>\u2003Capteur de courant, notamment pour mat\u00e9riel ferroviaire<\/i><\/a>, EP1855119A1<\/strong> (2007)
[4]<\/strong>\u2003R\u00e9alisation d’un inverseur pour relais \u00e9lectromagn\u00e9tique \u00e0 l’aide d’une armature mobile rotative de masse r\u00e9duite<\/i><\/a>, FR2680432A1<\/strong> (1993)
[5]<\/strong>\u2003R\u00e9alisation d\u2019un inverseur \u00e0 contacts \u00e9lectriques isol\u00e9s \u00e0 l\u2019aide d\u2019une armature mobile rotative \u00e9quilibr\u00e9e<\/i><\/a>, FR2683674A1<\/strong> (1993)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Mialy Rabenanahary, PhD\n<\/b><\/h3>\n

R&D and simulation engineer<\/h4>\n\n\n\n

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After graduating with a Master\u2019s degree in Fundamental Physics from Paris-Saclay University, Mialy decided to specialise in Fluid Dynamics and Energetics before obtaining a Ph.D. in Astronomy and Astrophysics at Observatoire de Paris in 2022.<\/p>\n

His thesis on numerical sciences focuses on the simulation of supersonic gas and dust ejection phenomena during star formation. This research project allowed him to simulate various multiphysics phenomena, such as shock waves, hydrogen chemistry, or cooling by collisional radiative emission. <\/span>In a global improvement context of space observation and numerical simulation techniques, the results of Mialy\u2019s work contribute to offering a new perspective on the understanding of stellar and planetary formation scenarios, as well as on the consequences of these phenomena at various space and time scales (final star mass, angular momentum evacuation, planetary systems and interstellar medium chemical composition, etc.).<\/p>\n

In 2023, Mialy joined ProtoSTEP as R&D and Multiphysics Simulations Engineer with an expertise in Fluid Mechanics.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Publications<\/h4>

[1] \u00a0\u00a0<\/strong>Wide-angle protostellar outflows driven by narrow jets in stratified cores<\/em><\/a>, A&A, 664<\/b> (2022)
<\/span>[2]<\/b><\/span> \u00a0\u00a0Protostellar outflows driven by a jet in a stratified core: revisiting a model in the ALMA era.<\/em><\/a> Universit\u00e9 Paris sciences et lettres, 2022.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tContact us for more information<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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ProtoSTEP was founded in 2019 based on our observations gained during various experiences in academic research and industrial R&D with one question: How do we reliably and cost effectively manage the physics limitations of a prototype while also reducing development time? To combat this recurring problem, we provide industrial and scientific expertise with the support […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"

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Cr\u00e9dits Images : COMSOL Multiphysics\u00ae<\/sup><\/em><\/font><\/p>","ocean_post_title_style":"background-image","ocean_post_title_background_color":"","ocean_post_title_background":3062,"ocean_post_title_bg_image_position":"center center","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"repeat-x","ocean_post_title_bg_image_size":"cover","ocean_post_title_height":200,"ocean_post_title_bg_overlay":0.7,"ocean_post_title_bg_overlay_color":"#efefff","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-2631","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nQui sommes-nous ? - EN - ProtoSTEP<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.protostep-forward.com\/index.php\/en\/qui-sommes-nous-en\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qui sommes-nous ? - EN - ProtoSTEP\" \/>\n<meta property=\"og:description\" content=\"ProtoSTEP was founded in 2019 based on our observations gained during various experiences in academic research and industrial R&D with one question: How do we reliably and cost effectively manage the physics limitations of a prototype while also reducing development time? 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