Search

Your search keyword '"Lionel Quettier"' showing total 13 results
Start Over Author "Lionel Quettier"
13 results on '"Lionel Quettier"'

1. Erratum: Towards a muon collider

Author

Carlotta Accettura, Dean Adams, Rohit Agarwal, Claudia Ahdida, Chiara Aimè, Nicola Amapane, David Amorim, Paolo Andreetto, Fabio Anulli, Robert Appleby, Artur Apresyan, Aram Apyan, Sergey Arsenyev, Pouya Asadi, Mohammed Attia Mahmoud, Aleksandr Azatov, John Back, Lorenzo Balconi, Laura Bandiera, Roger Barlow, Nazar Bartosik, Emanuela Barzi, Fabian Batsch, Matteo Bauce, J. Scott Berg, Andrea Bersani, Alessandro Bertarelli, Alessandro Bertolin, Kevin Black, Fulvio Boattini, Alex Bogacz, Maurizio Bonesini, Bernardo Bordini, Salvatore Bottaro, Luca Bottura, Alessandro Braghieri, Marco Breschi, Natalie Bruhwiler, Xavier Buffat, Laura Buonincontri, Philip N. Burrows, Graeme Burt, Dario Buttazzo, Barbara Caiffi, Marco Calviani, Simone Calzaferri, Daniele Calzolari, Rodolfo Capdevilla, Christian Carli, Fausto Casaburo, Massimo Casarsa, Luca Castelli, Maria Gabriella Catanesi, Lorenzo Cavallucci, Gianluca Cavoto, Francesco Giovanni Celiberto, Luigi Celona, Alessandro Cerri, Gianmario Cesarini, Cari Cesarotti, Grigorios Chachamis, Antoine Chance, Siyu Chen, Yang-Ting Chien, Mauro Chiesa, Anna Colaleo, Francesco Collamati, Gianmaria Collazuol, Marco Costa, Nathaniel Craig, Camilla Curatolo, David Curtin, Giacomo Da Molin, Magnus Dam, Heiko Damerau, Sridhara Dasu, Jorge de Blas, Stefania De Curtis, Ernesto De Matteis, Stefania De Rosa, Jean-Pierre Delahaye, Dmitri Denisov, Haluk Denizli, Christopher Densham, Radovan Dermisek, Luca Di Luzio, Elisa Di Meco, Biagio Di Micco, Keith Dienes, Eleonora Diociaiuti, Tommaso Dorigo, Alexey Dudarev, Robert Edgecock, Filippo Errico, Marco Fabbrichesi, Stefania Farinon, Anna Ferrari, Jose Antonio Ferreira Somoza, Frank Filthaut, Davide Fiorina, Elena Fol, Matthew Forslund, Roberto Franceschini, Rui Franqueira Ximenes, Emidio Gabrielli, Michele Gallinaro, Francesco Garosi, Luca Giambastiani, Alessio Gianelle, Simone Gilardoni, Dario Augusto Giove, Carlo Giraldin, Alfredo Glioti, Mario Greco, Admir Greljo, Ramona Groeber, Christophe Grojean, Alexej Grudiev, Jiayin Gu, Chengcheng Han, Tao Han, John Hauptman, Brian Henning, Keith Hermanek, Matthew Herndon, Tova Ray Holmes, Samuel Homiller, Guoyuan Huang, Sudip Jana, Sergo Jindariani, Paul Bogdan Jurj, Yonatan Kahn, Ivan Karpov, David Kelliher, Wolfgang Kilian, Antti Kolehmainen, Kyoungchul Kong, Patrick Koppenburg, Nils Kreher, Georgios Krintiras, Karol Krizka, Gordan Krnjaic, Benjamin T. Kuchma, Nilanjana Kumar, Anton Lechner, Lawrence Lee, Qiang Li, Roberto Li Voti, Ronald Lipton, Zhen Liu, Shivani Lomte, Kenneth Long, Jose Lorenzo Gomez, Roberto Losito, Ian Low, Qianshu Lu, Donatella Lucchesi, Lianliang Ma, Yang Ma, Shinji Machida, Fabio Maltoni, Marco Mandurrino, Bruno Mansoulie, Luca Mantani, Claude Marchand, Samuele Mariotto, Stewart Martin-Haugh, David Marzocca, Paola Mastrapasqua, Giorgio Mauro, Andrea Mazzolari, Navin McGinnis, Patrick Meade, Barbara Mele, Federico Meloni, Matthias Mentink, Claudia Merlassino, Elias Metral, Rebecca Miceli, Natalia Milas, Nikolai Mokhov, Alessandro Montella, Tim Mulder, Riccardo Musenich, Marco Nardecchia, Federico Nardi, Niko Neufeld, David Neuffer, Daniel Novelli, Yasar Onel, Domizia Orestano, Daniele Paesani, Simone Pagan Griso, Mark Palmer, Paolo Panci, Giuliano Panico, Rocco Paparella, Paride Paradisi, Antonio Passeri, Nadia Pastrone, Antonello Pellecchia, Fulvio Piccinini, Alfredo Portone, Karolos Potamianos, Marco Prioli, Lionel Quettier, Emilio Radicioni, Raffaella Radogna, Riccardo Rattazzi, Diego Redigolo, Laura Reina, Elodie Resseguie, Jürgen Reuter, Pier Luigi Ribani, Cristina Riccardi, Lorenzo Ricci, Stefania Ricciardi, Luciano Ristori, Tania Natalie Robens, Werner Rodejohann, Chris Rogers, Marco Romagnoni, Kevin Ronald, Lucio Rossi, Richard Ruiz, Farinaldo S. Queiroz, Filippo Sala, Jakub Salko, Paola Salvini, Ennio Salvioni, Jose Santiago, Ivano Sarra, Francisco Javier Saura Esteban, Jochen Schieck, Daniel Schulte, Michele Selvaggi, Carmine Senatore, Abdulkadir Senol, Daniele Sertore, Lorenzo Sestini, Varun Sharma, Vladimir Shiltsev, Jing Shu, Federica Maria Simone, Rosa Simoniello, Kyriacos Skoufaris, Massimo Sorbi, Stefano Sorti, Anna Stamerra, Steinar Stapnes, Giordon Holtsberg Stark, Marco Statera, Bernd Stechauner, Daniel Stolarski, Diktys Stratakis, Shufang Su, Wei Su, Olcyr Sumensari, Xiaohu Sun, Raman Sundrum, Maximilian J. Swiatlowski, Alexei Sytov, Tim M. P. Tait, Jingyu Tang, Jian Tang, Andrea Tesi, Pietro Testoni, Brooks Thomas, Emily Anne Thompson, Riccardo Torre, Ludovico Tortora, Luca Tortora, Sokratis Trifinopoulos, Ilaria Vai, Marco Valente, Riccardo Umberto Valente, Alessandro Valenti, Nicolò Valle, Ursula van Rienen, Rosamaria Venditti, Arjan Verweij, Piet Verwilligen, Ludovico Vittorio, Paolo Vitulo, Liantao Wang, Hannsjorg Weber, Mariusz Wozniak, Richard Wu, Yongcheng Wu, Andrea Wulzer, Keping Xie, Akira Yamamoto, Yifeng Yang, Katsuya Yonehara, Sangsik Yoon, Angela Zaza, Xiaoran Zhao, Alexander Zlobin, Davide Zuliani, and Jose Zurita

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Published
2024
Full Text
View/download PDF

2. Towards a muon collider

Author

Carlotta Accettura, Dean Adams, Rohit Agarwal, Claudia Ahdida, Chiara Aimè, Nicola Amapane, David Amorim, Paolo Andreetto, Fabio Anulli, Robert Appleby, Artur Apresyan, Aram Apyan, Sergey Arsenyev, Pouya Asadi, Mohammed Attia Mahmoud, Aleksandr Azatov, John Back, Lorenzo Balconi, Laura Bandiera, Roger Barlow, Nazar Bartosik, Emanuela Barzi, Fabian Batsch, Matteo Bauce, J. Scott Berg, Andrea Bersani, Alessandro Bertarelli, Alessandro Bertolin, Kevin Black, Fulvio Boattini, Alex Bogacz, Maurizio Bonesini, Bernardo Bordini, Salvatore Bottaro, Luca Bottura, Alessandro Braghieri, Marco Breschi, Natalie Bruhwiler, Xavier Buffat, Laura Buonincontri, Philip N. Burrows, Graeme Burt, Dario Buttazzo, Barbara Caiffi, Marco Calviani, Simone Calzaferri, Daniele Calzolari, Rodolfo Capdevilla, Christian Carli, Fausto Casaburo, Massimo Casarsa, Luca Castelli, Maria Gabriella Catanesi, Lorenzo Cavallucci, Gianluca Cavoto, Francesco Giovanni Celiberto, Luigi Celona, Alessandro Cerri, Gianmario Cesarini, Cari Cesarotti, Grigorios Chachamis, Antoine Chance, Siyu Chen, Yang-Ting Chien, Mauro Chiesa, Anna Colaleo, Francesco Collamati, Gianmaria Collazuol, Marco Costa, Nathaniel Craig, Camilla Curatolo, David Curtin, Giacomo Da Molin, Magnus Dam, Heiko Damerau, Sridhara Dasu, Jorge de Blas, Stefania De Curtis, Ernesto De Matteis, Stefania De Rosa, Jean-Pierre Delahaye, Dmitri Denisov, Haluk Denizli, Christopher Densham, Radovan Dermisek, Luca Di Luzio, Elisa Di Meco, Biagio Di Micco, Keith Dienes, Eleonora Diociaiuti, Tommaso Dorigo, Alexey Dudarev, Robert Edgecock, Filippo Errico, Marco Fabbrichesi, Stefania Farinon, Anna Ferrari, Jose Antonio Ferreira Somoza, Frank Filthaut, Davide Fiorina, Elena Fol, Matthew Forslund, Roberto Franceschini, Rui Franqueira Ximenes, Emidio Gabrielli, Michele Gallinaro, Francesco Garosi, Luca Giambastiani, Alessio Gianelle, Simone Gilardoni, Dario Augusto Giove, Carlo Giraldin, Alfredo Glioti, Mario Greco, Admir Greljo, Ramona Groeber, Christophe Grojean, Alexej Grudiev, Jiayin Gu, Chengcheng Han, Tao Han, John Hauptman, Brian Henning, Keith Hermanek, Matthew Herndon, Tova Ray Holmes, Samuel Homiller, Guoyuan Huang, Sudip Jana, Sergo Jindariani, Paul Bogdan Jurj, Yonatan Kahn, Ivan Karpov, David Kelliher, Wolfgang Kilian, Antti Kolehmainen, Kyoungchul Kong, Patrick Koppenburg, Nils Kreher, Georgios Krintiras, Karol Krizka, Gordan Krnjaic, Benjamin T. Kuchma, Nilanjana Kumar, Anton Lechner, Lawrence Lee, Qiang Li, Roberto Li Voti, Ronald Lipton, Zhen Liu, Shivani Lomte, Kenneth Long, Jose Lorenzo Gomez, Roberto Losito, Ian Low, Qianshu Lu, Donatella Lucchesi, Lianliang Ma, Yang Ma, Shinji Machida, Fabio Maltoni, Marco Mandurrino, Bruno Mansoulie, Luca Mantani, Claude Marchand, Samuele Mariotto, Stewart Martin-Haugh, David Marzocca, Paola Mastrapasqua, Giorgio Mauro, Andrea Mazzolari, Navin McGinnis, Patrick Meade, Barbara Mele, Federico Meloni, Matthias Mentink, Claudia Merlassino, Elias Metral, Rebecca Miceli, Natalia Milas, Nikolai Mokhov, Alessandro Montella, Tim Mulder, Riccardo Musenich, Marco Nardecchia, Federico Nardi, Niko Neufeld, David Neuffer, Daniel Novelli, Yasar Onel, Domizia Orestano, Daniele Paesani, Simone Pagan Griso, Mark Palmer, Paolo Panci, Giuliano Panico, Rocco Paparella, Paride Paradisi, Antonio Passeri, Nadia Pastrone, Antonello Pellecchia, Fulvio Piccinini, Alfredo Portone, Karolos Potamianos, Marco Prioli, Lionel Quettier, Emilio Radicioni, Raffaella Radogna, Riccardo Rattazzi, Diego Redigolo, Laura Reina, Elodie Resseguie, Jürgen Reuter, Pier Luigi Ribani, Cristina Riccardi, Lorenzo Ricci, Stefania Ricciardi, Luciano Ristori, Tania Natalie Robens, Werner Rodejohann, Chris Rogers, Marco Romagnoni, Kevin Ronald, Lucio Rossi, Richard Ruiz, Farinaldo S. Queiroz, Filippo Sala, Jakub Salko, Paola Salvini, Ennio Salvioni, Jose Santiago, Ivano Sarra, Francisco Javier Saura Esteban, Jochen Schieck, Daniel Schulte, Michele Selvaggi, Carmine Senatore, Abdulkadir Senol, Daniele Sertore, Lorenzo Sestini, Varun Sharma, Vladimir Shiltsev, Jing Shu, Federica Maria Simone, Rosa Simoniello, Kyriacos Skoufaris, Massimo Sorbi, Stefano Sorti, Anna Stamerra, Steinar Stapnes, Giordon Holtsberg Stark, Marco Statera, Bernd Stechauner, Daniel Stolarski, Diktys Stratakis, Shufang Su, Wei Su, Olcyr Sumensari, Xiaohu Sun, Raman Sundrum, Maximilian J. Swiatlowski, Alexei Sytov, Tim M. P. Tait, Jingyu Tang, Jian Tang, Andrea Tesi, Pietro Testoni, Brooks Thomas, Emily Anne Thompson, Riccardo Torre, Ludovico Tortora, Luca Tortora, Sokratis Trifinopoulos, Ilaria Vai, Marco Valente, Riccardo Umberto Valente, Alessandro Valenti, Nicolò Valle, Ursula van Rienen, Rosamaria Venditti, Arjan Verweij, Piet Verwilligen, Ludovico Vittorio, Paolo Vitulo, Liantao Wang, Hannsjorg Weber, Mariusz Wozniak, Richard Wu, Yongcheng Wu, Andrea Wulzer, Keping Xie, Akira Yamamoto, Yifeng Yang, Katsuya Yonehara, Sangsik Yoon, Angela Zaza, Xiaoran Zhao, Alexander Zlobin, Davide Zuliani, and Jose Zurita

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon Collider Collaboration. This Review summarises the status and the recent advances on muon colliders design, physics and detector studies. The aim is to provide a global perspective of the field and to outline directions for future work.

Published
2023
Full Text
View/download PDF

3. Commissioning Completion of the Iseult Whole Body 11.7 T MRI System

Author

P. Bredy, Arnaud Roger, Lionel Quettier, Francois Nunio, Quentin Guihard, G. Gilgrass, V. Stepanov, Pierre Vedrine, H. Lannou, F.P. Juster, Guillaume Dilasser, G. Aubert, Christophe Berriaud, Thierry Schild, A. Sinanna, J Belorgey, Loris Scola, O. Dubois, Vincent Jannot, and F. Molinie

Subjects
Engineering, business.industry, Nuclear engineering, Magnet, Superconducting magnet, Neuroscience research, Electrical and Electronic Engineering, Condensed Matter Physics, Whole body, business, Electronic, Optical and Magnetic Materials
Abstract

The Iseult project is a French-German initiative focused on very high magnetic-field molecular imaging. The project includes a Whole Body 11.7 T MRI magnet installed at Neurospin, a neuroscience research center operating at CEA Saclay since November 2006. After 7 years of fabrication at Belfort by GE Power (Ex Alstom), the Iseult magnet was delivered to CEA in June 2017, its connection with the cryoplant and all the ancillary equipment was completed in October 2018. After 4 months of cooldown and another 4 months of tests, the Iseult magnet reached its nominal field of 11.72 T without any quench for the first time, on July 18th. This paper deals with the magnet connection at Neurospin with the cryoplant and with the electrical and control systems. Finally, the paper will present the magnet commissioning data, from the cooling phase to the step-by-step energization up to the nominal current.

Published
2020
Full Text
View/download PDF

4. Iseult-NeuroSpin 1500 A Currents Leads: Conceptual and Experimental Results

Author

P. Bredy, Francois Paul Juster, Thierry Schild, V. Stepanov, Lionel Quettier, H. Lannou, Denis Bouziat, and Christophe Berriaud

Subjects
Materials science, Nuclear engineering, chemistry.chemical_element, Cryogenics, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Brass, Design studies, chemistry, Magnet, visual_art, 0103 physical sciences, Active cooling, visual_art.visual_art_medium, Electrical and Electronic Engineering, Current (fluid), 010306 general physics, Helium
Abstract

In the framework of the French-German project Iseult, we chose to design the 4.5 K vapor cooled current leads of the 11.75 T MRI magnet using a burn-proof approach, i.e., they are able to withstand a 3-h current slow dump without any active cooling. This constraint led us to select brass instead of pure copper, resulting in higher mass and thus in higher thermal stability. The drawback is a slightly higher cryogenic consumption. We present here the design studies of those current leads and compare their theoretical characteristics with the experimental results obtained during the test campaigns at CEA-Saclay.

Published
2018
Full Text
View/download PDF

5. Manufacturing Completion of the Iseult Whole Body 11.7 T MRI System

Author

O. Dubois, P. Bredy, M. Schweitzer, Loris Scola, Thierry Schild, Lionel Quettier, A. Sinanna, J Belorgey, F. Molinie, A. Bourquard, G. Gilgrass, A. Payn, Gerard Billotte, Francois Nunio, M. Nusbaum, F.P. Juster, H. Lannou, Pierre Vedrine, Christophe Berriaud, Quentin Guihard, V. Stepanov, Vincent Jannot, and G. Aubert

Subjects
010302 applied physics, Engineering, Magnetic noise, business.industry, Condensed Matter Physics, 01 natural sciences, Manufacturing engineering, Electronic, Optical and Magnetic Materials, 0103 physical sciences, Neuroscience research, Electrical and Electronic Engineering, 010306 general physics, business, Whole body, Overall status
Abstract

The Iseult/Inumac project is a French–German initiative focused on very high magnetic-field molecular imaging. That project includes a Whole Body 11.7 T MRI magnet that will equip Neurospin, a neuroscience research center operating at CEA Saclay since November 2006. After seven years of activities, the fabrication has been successfully completed in Belfort by GE Power. The Iseult magnet was delivered to CEA in May 2017 and the final commissioning has started. This paper deals with the last manufacturing steps and the final factory tests. An overall status of the commissioning and tests of the ancillary equipment at the site is also presented, as well as a brief summary of the next steps to reach the nominal field of 11.75 T.

Published
2018
Full Text
View/download PDF

6. Superferric Dipoles for the Super-FRS of the FAIR-Project

Author

Martin Winkler, Chhon Pes, Jorge Enrique Muñoz Garcia, Lionel Quettier, Eun Jung Cho, Arnaud Madur, Hans Mueller, and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
Cryostat, superferric dipoles, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], super-FRS, superconducting fragment separator, Superconducting magnet, deflection radius, Facility for Antiproton and Ion Research Project (FAIR), 7. Clean energy, 01 natural sciences, bending ion beams, Magnetic separation, integral field homogeneity, Nuclear physics, Rigidity (electromagnetism), Particle separators, Germany, Superconducting magnets, 0103 physical sciences, field homogeneity, super ferric H-type dipole magnets, Electrical and Electronic Engineering, Nuclear Experiment, 010306 general physics, Ions, Physics, superferric dipole, liquid helium, international accelerator facility, FAIR-Project, Darmstadt, Condensed Matter Physics, trapezoidal structure, Superconducting coils, Electronic, Optical and Magnetic Materials, Magnetic field, Dipole, Facility for Antiproton and Ion Research, Antiproton, Nb-Ti coils, Magnet, Physics::Accelerator Physics, cryostat, removable chamfered-pole, magnetic field calculation, chamfered-pole
Abstract

International audience; The Super conducting FRagment Separator (Super-FRS) is a part of Facility for Antiproton and Ion Research, a new international accelerator facility for the research with antiprotons and ions to be built in Darmstadt, Germany. The Super-FRS includes 24 super ferric H-type dipole magnets with trapezoidal structure and large aperture, deflection radius of 12.5 m, magnetic field of up to 1.6 T, and effective length of more than 2 m for bending ion beams (with a rigidity from 2 to 20 Tm). Two Nb-Ti coils will be located inside the cryostat in order to be cooled with liquid He, but the yoke will remain at room temperature (RT). A chamfered-pole was designed to meet the required field homogeneity. This paper reports on the status of such a dipole.

Published
2017
Full Text
View/download PDF

7. Effect of Eddy Currents Induced in the Thermal Shield During the Quench of the Superconducting Coils for the Super-FRS of the FAIR Project

Author

Arnaud Madur, Chhon Pes, Lionel Quettier, C. Mayri, Jorge Enrique Muñoz Garcia, J. Patrick Graffin, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
thermal shield, eddy current calculations, two-stage separator, finite element analysis, Magnetic shielding, 7. Clean energy, 01 natural sciences, Magnetic noise, law.invention, Super-FRS, 0302 clinical medicine, law, titanium alloys, Superconducting magnets, Eddy current, very short lived nuclei, NbTiCuSc, Nuclear Experiment, isotope separation, warm iron yoke, Liquid helium, Lorentz forces, Eddy currents, superferric magnet, scandium alloys, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, FAIR project, stress analysis, rare isotope beams, cryostat, Cryostat, Thermal force, Materials science, Iron, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], superconducting fragment separator, Superconducting magnet, Stress, dipole magnets, Nuclear physics, 03 medical and health sciences, Shield, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, copper alloys, mass measurement, liquid helium, superconducting coils, shielding, superferric type, particle separators, cryostats, Dipole, particle beam extraction, Electromagnetic coil, Magnet, Facility for Anti-Proton and Ion Research, niobium alloys, Superconductor, 030217 neurology & neurosurgery, magnetic iron
Abstract

International audience; The Superconducting FRagment Separator (Super-FRS) is a two-stage separator to be built next to the site of GSI, Darmstadt, Germany, as part of Facility for Anti-Proton and Ion Research. Its purpose is to create and separate rare isotope beams and to enable the mass measurement also for very short lived nuclei. Overall, the Super-FRS consists of 24 dipole magnets of so-called superferric type, with superconducting coils but the field shaped by magnetic iron. The coil is trapezoidal-shaped configuration, which is wound with NbTi wires of high Cu/Sc ratio and located inside a cryostat equipped with a thermal shield and cooled with liquid helium; but the dipole will have a warm iron yoke with a wide air trim slot. This paper presents the results of the eddy current calculations in the thermal shield induced during the quench of the magnet. The mechanical behavior of the thermal shield under the Lorentz forces generated by the eddy currents will also be presented.

Published
2016
Full Text
View/download PDF

8. Losses Measurement in HTc Bi2212 Ribbons and Round Wires

Author

H. Cloez, Lionel Quettier, L. Zani, S. Girard, J.L. Duchateau, Jean-Michel Rey, J. L. Marechal, and A. Allais

Subjects
High energy, Materials science, Condensed matter physics, Magnet, Mechanical engineering, Critical current, High field, Superconducting magnet, Superconducting magnetic energy storage, Electrical and Electronic Engineering, Condensed Matter Physics, Energy storage, Electronic, Optical and Magnetic Materials
Abstract

Recent progresses in Bi2212 wires have proved its suitability for round wire developments and high field magnet development. High energy storage magnets can be foreseen leading to cable developments. In order to prepare such work CEA Saclay has developed in collaboration with the Nexans company a Bi 2212 wire having 18 sub-elements. The round wire has been twisted to study losses and twisting degradation. The results are presented here and compared to losses measurements made on already existing ribbons.

Published
2009
Full Text
View/download PDF

9. Manufacturing and Test of a Short $\hbox{Nb}_{3}\hbox{Sn}$ Quadrupole Magnet Model at CEA/Saclay

Author

D. Leboeuf, M. Segreti, Lionel Quettier, Maria Durante, Y. Le Noa, and F. Simon

Subjects
Large Hadron Collider, Materials science, Electromagnet, Mechanical engineering, Superconducting magnet, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, law.invention, Nuclear physics, Electromagnetic coil, law, Electrical equipment, Magnet, Electrical and Electronic Engineering, Quadrupole magnet, Yoke
Abstract

IRFU/SACM at CEA/Saclay has undertaken an R&D program on Nb3Sn aimed at designing, building and testing a 1-m-long, 56-mm-single-aperture quadrupole magnet model. Model design is based on the design of LHC arc quadrupole magnets, without iron yoke. It is expected to reach a nominal field gradient of 211 T/m at 11,870 A. The main goal of the program is to learn about Nb3Sn technology and evaluate fabrication techniques relative to the use of this superconductor. Coils are manufactured by the so called ldquowind, react and impregnaterdquo technique. Laminated, austenitic steel collars are locked around the coil assembly by means of keys in order to restrain Lorentz forces. Coil manufacturing and magnet assembly have been achieved in 2007. Cold mass assembly is under work. Warm field measurements are carried out at each step of magnet and cold mass assembly. After a brief recall of the conceptual design, the paper reviews the manufacturing of the coils and of the magnet assembly and presents the results of warm magnetic field measurements.

Published
2009
Full Text
View/download PDF

10. Critical Current Measurement in HTS Bi2212 Ribbons and Round Wires

Author

Daniel Tordera, Lionel Quettier, J. M. Gheller, O. Louchard, Philippe Fazilleau, Jean-Michel Rey, R. Le Bouter, J.-L. Duchateau, and A. Allais

Subjects
Insert (composites), Materials science, Condensed matter physics, Magnet, Mechanical engineering, High field, Critical current, Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Abstract

Recent progresses in Bi2212 wires have proved its suitability for round wire developments and high field magnet insert manufacturing. In order to prepare cabling developments the Commissariat a l'Energie Atomique at Saclay has developed in collaboration with the Nexans Company a Bi2212 wire having 18 sub-elements. The results of the critical current measurement are presented here and compared with already existing ribbons. The round wire has also been twisted to study twisting degradation.

Published
2009
Full Text
View/download PDF

11. Design of a superconducting insert to obtain a high and quasi-uniform magnetic force field

Author

Denis Netter, Lionel Quettier, Alain Mailfert, and Jean Lévêque

Subjects
Superconductivity, Ring (mathematics), Materials science, Metals and Alloys, Solenoid, Mechanics, Superconducting magnetic energy storage, Condensed Matter Physics, Magnetic field, Nuclear magnetic resonance, Electromagnetic coil, Electrical equipment, Materials Chemistry, Ceramics and Composites, Electrical and Electronic Engineering, Electric current
Abstract

In this paper, we study the magnetic force generated by the combination of a solenoid and a superconducting ring insert. We have focused our study on the uniformity of the magnetic force. We use a genetic algorithm to determine the optimal shape of the superconducting ring. We are able to obtain uniformity of 0.5% variance. We also study the influence of several factors on uniformity, such as the critical current of the coil, the ring, and the size of the working area.

Published
2005
Full Text
View/download PDF

12. 2-D Inverse Problem: Ideal Current Distribution Generating a Magnetic Force Field with Given Constraints on Homogeneity

Author

Lionel Quettier and Alain Mailfert

Subjects
Plane symmetry, Mathematical analysis, Homogeneity (physics), Inverse, Diamagnetism, Magnetic potential, Inverse problem, Magnetic levitation, Mathematics, Magnetic field
Abstract

Generation of uniform field of magnetic forces in a given domain is a problem with various applications. The main idea is to compensate the gravity by means of a magnetic force acting on a small diamagnetic volume. This paper deals with a way of identifying ideal current distributions able to generate a quasi- uniform force field. Based on one particular expression of the complex magnetic potential, an inverse methodology, which is valid for structures with plane symmetry (2-D field), has been worked out. Currents are modeled by purely surface (or thin shell) current distributions.

Published
2003
Full Text
View/download PDF

13. Bi2212 double pancakes for HTS critical current measurement

Author

Jean-Michel Rey, Daniel Tordera, Olivier Louchard, J. M. Gheller, Philippe Fazilleau, and Lionel Quettier

Subjects
Superconductivity, History, Resistive touchscreen, Engineering, business.industry, Nuclear engineering, Sample (material), Electrical engineering, Computer Science Applications, Education, Mandrel, Magnet, Ribbon, Electric current, business, Type-II superconductor
Abstract

Recent progresses in Bi2212 wires have proved its suitability for high field magnet development. Using the volume of the VAMAS sample CEA Saclay has developed a small double pancake sample for Bi2212 ribbon testing. This sample allows testing up to 6 meters of superconducting ribbon using a react and wind technique, the reaction being done on a provisional reaction mandrel. The manufacturing technique of this sample is presented as well as the results of the critical current measurement. These results are compared with results measured on conventional VAMAS samples and with resistive transition laws previously published.

Published
2010
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results