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Tooling Design, Coil Fabrication, and Prototype Coil Performance Verification for a 28 GHz Nb _{3} Sn ECR Ion Source Magnet
Philip Mallon;Tengming Shen;Ye Yang;Ray Hafalia;Lianrong Xu;Jose Ferradas Troitiño;Mariusz Juchno;Paolo Ferracin;Soren Prestemon;Yoonhyuck Choi;Junwei Guo;Xiaoji Du;David Greene;Danlu Zhang;Junseong Kim;Tomofumi Maruta;Guillaume Machicoane;Ting Xu;Jie Wei
IEEE Transactions on Applied Superconductivity
Year: 2025 | Early Access Article |
Worldwide several superconducting electron cyclotron resonance (ECR) ion sources have been developed and in operation for heavy ion accelerators using Nb-Ti magnets. To explore the use of high-field Nb $_{3}$ Sn to break the field limit of Nb-Ti for ECR magnets, state-of-the-art Nb $_{3}$ Sn coil fabrication techniques and tooling design must be used to address the challenging characteristics of N...Show More
Tooling Design, Coil Fabrication, and Prototype Coil Performance Verification for a 28 GHz Nb $_{3}$ Sn ECR Ion Source Magnet
Philip Mallon;Tengming Shen;Ye Yang;Ray Hafalia;Lianrong Xu;Jose Ferradas Troitiño;Mariusz Juchno;Paolo Ferracin;Soren Prestemon;Yoonhyuck Choi;Junwei Guo;Xiaoji Du;David Greene;Danlu Zhang;Junseong Kim;Tomofumi Maruta;Guillaume Machicoane;Ting Xu;Jie Wei
Year: 2025 | Early Access Article |
Fabrication of a Nb-Ti Superconducting Closed-Loop Coil for the Next-Generation 45 GHz ECR Ion Source MARS-D
Lianrong Xu;Janilee Benitez;Jaime Cruz Duran;Paolo Ferracin;Mariusz Juchno;Larry Phair;Damon Todd;Li Wang;Daniel Xie;Ye Yang
Electron Cyclotron Resonance Ion Sources (ECRISs) that utilize Nb-Ti superconducting coils for 28 GHz frequencies have been operating effectively for over twenty years. However, transitioning to higher frequencies demands stronger magnetic fields, and the conventional racetrack-and-solenoid ECRIS structures have reached their maximum capability with Nb-Ti. To address this, a Mixed Axial and Radial...Show More
Design Margin Comparison of a Sextupole-in-Solenoid and a Closed-Loop-Coil Type Nb-Ti Superconducting ECR Magnets
Ye Yang;Paolo Ferracin;Jose Ferradás Troitiño;Mariusz Juchno;Janilee Benitez;Damon Todd;Lianrong Xu;Jaime Cruz Duran;Diego Arbelaez;Tengming Shen;Daniel Xie
Third-generation electron cyclotron resonance ion sources (ECRISs) have relied on a combination of sextupole and solenoid fields from Nb-Ti superconductors to produce the magnetic fields required for 28 GHz operation. The VENUS ion source at Lawrence Berkeley National Laboratory (LBNL) was the first third-generation ion source optimized for 28 GHz operation, and since that time a similar design ha...Show More
Design and Development of a 28 GHz Nb$_{{\text{3}}}$Sn ECR Ion Source Superconducting Magnet
Tengming Shen;Ye Yang;R. Hafalia;Mariusz Juchno;Andy Lin;Jean-Francois Croteau;Hugh Higley;Mike Naus;Ian Pong;Jose Ferradas Troitino;Paolo Ferracin;Soren Prestemon;Yoonhyuck Choi;Junwei Guo;Xiaoji Du;Danlu Zhang;Tomofumi Maruta;Guillaume Machicoane;Ting Xu;Jie Wei;Jun Lu
Worldwide several electron cyclotron resonance (ECR) ion sources have been developed and in operation for heavy ion accelerators using Nb-Ti superconducting magnets. The Versatile ECR ion source for NUclear Science (VENUS) at the Lawrence Berkeley National Lab (LBNL) and the newly commissioned 28 GHz superconducting ECR ion source at the Facility for Rare Isotope Beams (FRIB) were developed by LBN...Show More
Design and Development of a 28 GHz Nb$_{{\text{3}}}$Sn ECR Ion Source Superconducting Magnet
Tengming Shen;Ye Yang;R. Hafalia;Mariusz Juchno;Andy Lin;Jean-Francois Croteau;Hugh Higley;Mike Naus;Ian Pong;Jose Ferradas Troitino;Paolo Ferracin;Soren Prestemon;Yoonhyuck Choi;Junwei Guo;Xiaoji Du;Danlu Zhang;Tomofumi Maruta;Guillaume Machicoane;Ting Xu;Jie Wei;Jun Lu
Conceptual Design of 20 T Hybrid Accelerator Dipole Magnets
P. Ferracin;G. Ambrosio;M. Anerella;D. Arbelaez;L. Brouwer;E. Barzi;L. D. Cooley;J. Cozzolino;L. Garcia Fajardo;R. Gupta;M. Juchno;V. V. Kashikhin;F. Kurian;V. Marinozzi;I. Novitski;E. Rochepault;J. Stern;G. Vallone;B. Yahia;A.V. Zlobin
Hybrid magnets are currently under consideration as an economically viable option towards 20 T dipole magnets for next generation of particle accelerators. In these magnets, High Temperature Superconducting (HTS) materials are used in the high field part of the coil with so-called “insert coils”, and Low Temperature Superconductors (LTS) like Nb3Sn and Nb-Ti superconductors are used in the lower f...Show More
An Initial Look at the Magnetic Design of a 150 mm Aperture High-Temperature Superconducting Magnet With a Dipole Field of 8 to 10 T
X. Wang;D. Arbelaez;L. Brouwer;S. Caspi;P. Ferracin;L. Garcia Fajardo;S. Gourlay;H. Higley;M. Juchno;M. Marchevsky;I. Pong;S. Prestemon;J. L. Rudeiros Fernandez;G. Sabbi;T. Shen;R. Teyber;G. Vallone;D. van der Laan;J. Weiss
High-temperature superconducting REBa$_{2}$ Cu$_{3}$O$_{7-x}$ (rebco) conductors have the potential to generate a high magnetic field over a broad temperature range. The corresponding accelerator magnet technology, still in its infancy, can be attractive for future energy-frontier particle colliders such as a multi-TeV muon collider. To help develop the technology, we explore the requirements and ...Show More
An Initial Look at the Magnetic Design of a 150 mm Aperture High-Temperature Superconducting Magnet With a Dipole Field of 8 to 10 T
X. Wang;D. Arbelaez;L. Brouwer;S. Caspi;P. Ferracin;L. Garcia Fajardo;S. Gourlay;H. Higley;M. Juchno;M. Marchevsky;I. Pong;S. Prestemon;J. L. Rudeiros Fernandez;G. Sabbi;T. Shen;R. Teyber;G. Vallone;D. van der Laan;J. Weiss
Shell-Based Support Structure for the 45 GHz ECR Ion Source MARS-D
M. Juchno;J. Y. Benitez;J. Doyle;A. Hodgkinson;T. Leow;L. W. Phair;D. S. Todd;L. Wang;D. Z. Xie
Superconducting electron cyclotron resonance ion sources (ECRISs) using NbTi coils and optimized for 28 GHz resonant heating have been successfully operated for almost two decades. Moving to higher heating frequencies requires increased magnetic fields, but traditional racetrack-and-solenoid ECRIS structures are at their limit using NbTi. Rather than moving to a superconductor untested in this fie...Show More
Towards 20 T Hybrid Accelerator Dipole Magnets
P. Ferracin;G. Ambrosio;D. Arbelaez;L. Brouwer;E. Barzi;L. Cooley;L. Garcia Fajardo;R. Gupta;M. Juchno;V. Kashikhin;V. Marinozzi;I. Novitski;E. Rochepault;J. Stern;A. Zlobin;N. Zucchi
The most effective way to achieve very high collision energies in a circular particle accelerator is to maximize the field strength of the main bending dipoles. In dipole magnets using Nb-Ti superconductor the practical field limit is considered to be 8-9 T. When Nb3Sn superconductor material is utilized, a field level of 15-16 T can be achieved. To further push the magnetic field beyond the Nb3Sn...Show More
Design of CCT6: A Large Aperture, Nb$_3$Sn Dipole Magnet for HTS Insert Testing
We present the design of a four-layer, Canted Cosine Theta (CCT) Nb$_3$Sn dipole magnet as part of the general R&D program for high field superconducting magnets supported by the US Magnet Development Program (US-MDP). Future testing with High-Temperature Superconducting (HTS) inserts in a hybrid configuration motivates the design’s large clear aperture of 120 mm and target operating dipole field ...Show More
Conceptual Design of Superbend and Hardbend Magnets for Advance Light Source Upgrade Project
Mariusz Juchno;Jin Young Jung;Charles Swenson;Adrian Hodgkinson;Li Wang;Ian Pong;Roenna Nepomuceno;Ross Schlueter;Changchun Sun;Marco Venturini;Steve Virostek;Ken Chow;Christoph Steier;David Robin
ALS-U is an ongoing upgrade of the Advance Light Source (ALS) at Lawrence Berkeley National Laboratory (LBL). The upgraded ring of the ALS will use a multi-bend-archomat (MBA) lattice, which will allow increasing the brightness of soft x-ray sources 2-3 orders of magnitude with respect to current ALS ca-pabilities. One of the goals of the project is maintaining support for existing x-ray beamlines...Show More
The 16 T Dipole Development Program for FCC and HE-LHC
Daniel Schoerling;Diego Arbelaez;Bernhard Auchmann;Marta Bajko;Amalia Ballarino;Emanuela Barzi;Giovanni Bellomo;Michael Benedikt;Susana Izquierdo Bermudez;Bernardo Bordini;Luca Bottura;Lucas Brouwer;Pierluigi Bruzzone;Barbara Caiffi;Shlomo Caspi;Ananda Chakraborti;Eric Coatanea;Gijs de Rijk;Marc Dhalle;Maria Durante;Pasquale Fabbricatore;Stefania Farinon;Helene Felice;Alejandro Fernandez;Iñigo Sancho Fernandez;Peng Gao;Barbara Gold;Thodoris Gortsas;Steve Gourlay;Mariusz Juchno;Vadim Kashikhin;Charilaos Kokkinos;Sotiris Kokkinos;Kari Koskinen;Friedrich Lackner;Clement Lorin;Konstantinos Loukas;Alexandre Louzguiti;Kari Lyytikainen;Samuele Mariotto;Maxim Marchevsky;Giuseppe Montenero;Javier Munilla;Igor Novitski;Toru Ogitsu;A. Pampaloni;J. C. Perez;C. Pes;C. Petrone;D. Polyzos;S. Prestemon;M. Prioli;A. M. Ricci;J. M. Rifflet;E. Rochepault;S. Russenschuck;T. Salmi;I. A. Santillana;F. Savary;C. Scheuerlein;M. Segreti;C. Senatore;M. Sorbi;M. Statera;A. Stenvall;L. Tavian;T. Tervoort;D. Tommasini;F. Toral;R. Valente;G. Velev;A. P. Verweij;S. Wessel;F. Wolf;F. Zimmermann;A. V. Zlobin
A future circular collider (FCC) with a center-of-mass energy of 100 TeV and a circumference of around 100 km, or an energy upgrade of the LHC (HE-LHC) to 27 TeV require bending magnets providing 16 T in a 50-mm aperture. Several development programs for these magnets, based on Nb3Sn technology, are being pursued in Europe and in the U.S. In these programs, cos-theta, block-type, common-coil, and ...Show More
The 16 T Dipole Development Program for FCC and HE-LHC
Daniel Schoerling;Diego Arbelaez;Bernhard Auchmann;Marta Bajko;Amalia Ballarino;Emanuela Barzi;Giovanni Bellomo;Michael Benedikt;Susana Izquierdo Bermudez;Bernardo Bordini;Luca Bottura;Lucas Brouwer;Pierluigi Bruzzone;Barbara Caiffi;Shlomo Caspi;Ananda Chakraborti;Eric Coatanea;Gijs de Rijk;Marc Dhalle;Maria Durante;Pasquale Fabbricatore;Stefania Farinon;Helene Felice;Alejandro Fernandez;Iñigo Sancho Fernandez;Peng Gao;Barbara Gold;Thodoris Gortsas;Steve Gourlay;Mariusz Juchno;Vadim Kashikhin;Charilaos Kokkinos;Sotiris Kokkinos;Kari Koskinen;Friedrich Lackner;Clement Lorin;Konstantinos Loukas;Alexandre Louzguiti;Kari Lyytikainen;Samuele Mariotto;Maxim Marchevsky;Giuseppe Montenero;Javier Munilla;Igor Novitski;Toru Ogitsu;A. Pampaloni;J. C. Perez;C. Pes;C. Petrone;D. Polyzos;S. Prestemon;M. Prioli;A. M. Ricci;J. M. Rifflet;E. Rochepault;S. Russenschuck;T. Salmi;I. A. Santillana;F. Savary;C. Scheuerlein;M. Segreti;C. Senatore;M. Sorbi;M. Statera;A. Stenvall;L. Tavian;T. Tervoort;D. Tommasini;F. Toral;R. Valente;G. Velev;A. P. Verweij;S. Wessel;F. Wolf;F. Zimmermann;A. V. Zlobin
Summary of the Mechanical Performances of the 1.5 m Long Models of the Nb$_{3}$Sn Low-$\beta$ Quadrupole MQXF
Giorgio Vallone;Giorgio Ambrosio;Eric C. Anderssen;Hugo Bajas;Nicolas Bourcey;Daniel W. Cheng;Guram Chlachidze;Paolo Ferracin;Philippe Grosclaude;Michael Guinchard;Susana Izquierdo Bermudez;Mariusz Juchno;Heng Pan;Juan Carlos Perez;Soren Prestemon;Thomas Strauss
The Nb3Sn quadrupole MQXF is being developed as a part of the large hadron collide (LHC) High Luminosity upgrade. The magnet design was tested on 1.5-m-long short models, sharing the same cross section with the full-length magnets. Various azimuthal and longitudinal preloads were applied, studying the impact on the magnet training and on its mechanical performances. The experiments demonstrated th...Show More
Summary of the Mechanical Performances of the 1.5 m Long Models of the Nb$_{3}$Sn Low-$\beta$ Quadrupole MQXF
Giorgio Vallone;Giorgio Ambrosio;Eric C. Anderssen;Hugo Bajas;Nicolas Bourcey;Daniel W. Cheng;Guram Chlachidze;Paolo Ferracin;Philippe Grosclaude;Michael Guinchard;Susana Izquierdo Bermudez;Mariusz Juchno;Heng Pan;Juan Carlos Perez;Soren Prestemon;Thomas Strauss
Mechanical Utility Structure for Testing High Field Superconducting Dipole Magnets
Mariusz Juchno;Lucas Brouwer;Shlomo Caspi;A. Hafalia;Igor Novitski;Soren Prestemon;Alexander Zlobin
The U.S. Magnet Development Program (MDP) collaboration is designing a utility mechanical structure for testing various high-field superconducting dipole coils. The design uses a shell-based structure concept, which allows applying preload in two steps: during a room temperature assembly and during a cool down to a cryogenic temperature. The structure is designed to accommodate various coil design...Show More
Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-$\beta$ Quadrupole for the High-Luminosity LHC Upgrade
Giorgio Vallone;Giorgio Ambrosio;Eric Anderssen;Nicolas Bourcey;Daniel W. Cheng;Paolo Ferracin;Philippe Grosclaude;Michael Guinchard;Susana Izquierdo Bermudez;Mariusz Juchno;Friedrich Lackner;Heng Pan;Juan Carlos Perez;Soren Prestemon;Michela Semeraro;Stephane Triquet
The Nb3Sn low-β quadrupole MQXF is being developed as a part of the High-Luminosity large hadron collider (LHC) upgrade project. The magnet will be produced in two different configurations, sharing the same cross section but with different lengths. A 7.2-m mechanical model of MQXFB was recently assembled at european organization for nuclear research (CERN) with one copper coil, two low-grade coils...Show More
Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-$\beta$ Quadrupole for the High-Luminosity LHC Upgrade
Giorgio Vallone;Giorgio Ambrosio;Eric Anderssen;Nicolas Bourcey;Daniel W. Cheng;Paolo Ferracin;Philippe Grosclaude;Michael Guinchard;Susana Izquierdo Bermudez;Mariusz Juchno;Friedrich Lackner;Heng Pan;Juan Carlos Perez;Soren Prestemon;Michela Semeraro;Stephane Triquet
Test Result of the Short Models MQXFS3 and MQXFS5 for the HL-LHC Upgrade
Hugues Bajas;Giorgio Ambrosio;A. Ballarino;Marta Bajko;B. Bordini;N. Bourcey;D. W. Cheng;M. Cabon;A. Chiuchiolo;G. Chlachidze;H. Felice;L. Fiscarelli;M. Juchno;Susana Izquierdo Bermudez;M. Guinchard;J. Kopal;F. Lackner;M. Marchevsky;F. Nobrega;H. Pan;J. C. Perez;H. Prin;E. Ravaioli;L. Rossi;G. Sabbi;S. Sequeira Tavares;J. Steckert;S. Stoynev;Ezio Todesco;G. Vallone;P. Wanderer;X. Wang;M. Yu
In the framework of the High-Luminosity Large Hadron Collider, the installation of a new generation of quadrupole magnets is foreseen on each side of ATLAS and CMS experiments. The new magnets are based on Nb3Sn technology and shall be able to reach an ultimate current of 17.9 kA with a peak field of 12.3 T in the coil. In 2016 and 2017, the first two short models, called MQXFS3 and MQXFS5, have b...Show More
Test Result of the Short Models MQXFS3 and MQXFS5 for the HL-LHC Upgrade
Hugues Bajas;Giorgio Ambrosio;A. Ballarino;Marta Bajko;B. Bordini;N. Bourcey;D. W. Cheng;M. Cabon;A. Chiuchiolo;G. Chlachidze;H. Felice;L. Fiscarelli;M. Juchno;Susana Izquierdo Bermudez;M. Guinchard;J. Kopal;F. Lackner;M. Marchevsky;F. Nobrega;H. Pan;J. C. Perez;H. Prin;E. Ravaioli;L. Rossi;G. Sabbi;S. Sequeira Tavares;J. Steckert;S. Stoynev;Ezio Todesco;G. Vallone;P. Wanderer;X. Wang;M. Yu
Quench Protection of a Nb$_3$Sn Superconducting Magnet System for a 45-GHz ECR Ion Source
E. Ravaioli;A. Ray Hafalia;M. Juchno;W. Lu;GL Sabbi;L. Sun;W. Wu;D. Xie;H. W. Zhao;S. J. Zheng
Lawrence Berkeley National Laboratory in collaboration with the Institute of Modern Physics has developed a Nb3Sn-based superconducting magnet system for a fourthgeneration electron cyclotron resonance source, with a goal of achieving the magnetic field required for operating at the microwave frequency of 45 GHz. The magnet system is composed of one sextupole magnet inside three solenoids of diffe...Show More
Mechanical Analysis of the Short Model Magnets for the Nb $_{3}$Sn Low-$\beta$ Quadrupole MQXF
G. Vallone;G. Ambrosio;H. Bajas;N. Bourcey;D. W. Cheng;G. Chlachidze;P. Ferracin;P. Grosclaude;M. Guinchard;S. Izquierdo Bermudez;M. Juchno;H. Pan;J. C. Perez;S. Prestemon;T. Strauss
During the development of MQXF, the new Nb3Sn quadrupole to be used in the large hadron collider (LHC) inner triplets for the High Luminosity upgrade, three short models were tested: MQXFS1, MQXFS3, and MQXFS5. These models differ in the use of thin or thick laminations for the iron components, in the coil design, and in the superconductive strands, rod restack process (RRP) or powder in tube (PIT...Show More
Mechanical Design Analysis of MQXFB, the 7.2-m-Long Low- $\beta$ Quadrupole for the High-Luminosity LHC Upgrade
Giorgio Vallone;Giorgio Ambrosio;Nicolas Bourcey;E. Anderssen;Daniel W. Cheng;Paolo Ferracin;Philippe Grosclaude;Michael Guinchard;Susana Izquierdo Bermudez;Mariusz Juchno;Friedrich Lackner;Heng Pan;Juan Carlos Perez;Soren Prestemon
As part of the High-Luminosity Large Hadron Collider (LHC) Project, a set of Nb3Sn quadrupoles are being developed, aiming to enhance the performance of the inner triplets. The new magnets, identified as MQXFA and MQXFB, will share the same cross section with two different lengths, 4.2 and 7.2 m, respectively. During the magnet development, three short models were tested, along with a number of me...Show More
Mechanical Design Analysis of MQXFB, the 7.2-m-Long Low- $\beta$ Quadrupole for the High-Luminosity LHC Upgrade
Giorgio Vallone;Giorgio Ambrosio;Nicolas Bourcey;E. Anderssen;Daniel W. Cheng;Paolo Ferracin;Philippe Grosclaude;Michael Guinchard;Susana Izquierdo Bermudez;Mariusz Juchno;Friedrich Lackner;Heng Pan;Juan Carlos Perez;Soren Prestemon
Status of the 16 T Dipole Development Program for a Future Hadron Collider
Davide Tommasini;Diego Arbelaez;Bernhard Auchmann;Hugues Bajas;Marta Bajko;Amalia Ballarino;Emanuela Barzi;Giovanni Bellomo;Michael Benedikt;Susana Izquierdo Bermudez;Bernardo Bordini;Luca Bottura;Lucas Brower;Marco Buzio;Barbara Caiffi;Shlomo Caspi;Marc Dhalle;Maria Durante;Gijs deRijk;Pasquale Fabbricatore;Stefania Farinon;Paolo Ferracin;Peng Gao;Steve Gourlay;Mariusz Juchno;Vadim Kashikhin;Friedrich Lackner;Clement Lorin;Maxim Marchevsky;Vittorio Marinozzi;Teresa Martinez;Javier Munilla;Igor Novitski;Toru Ogitsu;Rafal Ortwein;Juan Carlos Perez;Carlo Petrone;Soren Prestemon;Marco Prioli;Jean-Michel Rifflet;Etienne Rochepault;Stephan Russenschuck;Tiina Salmi;Frederic Savary;Daniel Schoerling;Michel Segreti;Carmine Senatore;Massimo Sorbi;Antti Stenvall;Ezio Todesco;Fernando Toral;Arjan P. Verweij;Sander Wessel;Felix Wolf;Alexander V. Zlobin
A next step of energy increase of hadron colliders beyond the LHC requires high-field superconducting magnets capable of providing a dipolar field in the range of 16 T in a 50-mm aperture with accelerator quality. These characteristics could meet the requirements for an upgrade of the LHC to twice the present beam energy or for a 100-TeV center of mass energy future circular collider. This paper s...Show More
Status of the 16 T Dipole Development Program for a Future Hadron Collider
Davide Tommasini;Diego Arbelaez;Bernhard Auchmann;Hugues Bajas;Marta Bajko;Amalia Ballarino;Emanuela Barzi;Giovanni Bellomo;Michael Benedikt;Susana Izquierdo Bermudez;Bernardo Bordini;Luca Bottura;Lucas Brower;Marco Buzio;Barbara Caiffi;Shlomo Caspi;Marc Dhalle;Maria Durante;Gijs deRijk;Pasquale Fabbricatore;Stefania Farinon;Paolo Ferracin;Peng Gao;Steve Gourlay;Mariusz Juchno;Vadim Kashikhin;Friedrich Lackner;Clement Lorin;Maxim Marchevsky;Vittorio Marinozzi;Teresa Martinez;Javier Munilla;Igor Novitski;Toru Ogitsu;Rafal Ortwein;Juan Carlos Perez;Carlo Petrone;Soren Prestemon;Marco Prioli;Jean-Michel Rifflet;Etienne Rochepault;Stephan Russenschuck;Tiina Salmi;Frederic Savary;Daniel Schoerling;Michel Segreti;Carmine Senatore;Massimo Sorbi;Antti Stenvall;Ezio Todesco;Fernando Toral;Arjan P. Verweij;Sander Wessel;Felix Wolf;Alexander V. Zlobin
Mechanical Design of a Nb3Sn Superconducting Magnet System for a 45 GHz ECR Ion Source
Mariusz Juchno;Aurelio Hafalia;Wang Lu;Emmanuele Ravaioli;Gian Luca Sabbi;Liangting Sun;Wei Wu;Daniel Xie;Hongwei Zhao;Li Zhu
Lawrence Berkeley National Laboratory in collaboration with the Institute of Modern Physics, Lanzhou, China, has developed a Nb3Sn superconducting magnet system for a fourth-generation electron cyclotron resonance (ECR) ion source operating at the microwave frequency of 45 GHz. This paper presents a mechanical design capable of supporting the magnet up to the required operational level, resulting ...Show More
Mechanical Performance of Short Models for MQXF, the Nb3Sn Low-β Quadrupole for the Hi-Lumi LHC
Giorgio Vallone;Giorgio Ambrosio;Eric Anderssen;Nicolas Bourcey;Daniel W. Cheng;Helene Felice;Paolo Ferracin;Claudio Fichera;Philippe Grosclaude;Michael Guinchard;Mariusz Juchno;Heng Pan;Juan Carlos Perez;Soren Prestemon
In the framework of the Hi-Lumi LHC Project, CERN and U.S. LARP are jointly developing MQXF, a 150-mm aperture high-field Nb3Sn quadrupole for the upgrade of the inner triplet of the low-beta interaction regions. The magnet is supported by a shell-based structure, providing the preload by means of bladder-key technology and differential thermal contraction of the various components. Two short mode...Show More
Mechanical Performance of Short Models for MQXF, the Nb3Sn Low-β Quadrupole for the Hi-Lumi LHC
Giorgio Vallone;Giorgio Ambrosio;Eric Anderssen;Nicolas Bourcey;Daniel W. Cheng;Helene Felice;Paolo Ferracin;Claudio Fichera;Philippe Grosclaude;Michael Guinchard;Mariusz Juchno;Heng Pan;Juan Carlos Perez;Soren Prestemon
Mechanical Design Studies of the MQXF Long Model Quadrupole for the HiLumi LHC
Heng Pan;Eric Anderssen;Giorgio Ambrosio;Daniel W. Cheng;Mariusz Juchno;Paolo Ferracin;Helene Felice;Juan Carlos Perez;Soren O. Prestemon;Giorgio Vallone
The Large Hadron Collider Luminosity upgrade (HiLumi) program requires new low-β triplet quadrupole magnets, called MQXF, in the interaction region to increase the LHC peak and integrated luminosity. The MQXF magnets, designed and fabricated in collaboration between CERN and the U.S. LARP, will all have the same cross section. The MQXF long model, referred as MQXFA, is a quadrupole using the Nb3Sn...Show More
The Magnetic Model of the LHC at 6.5 TeV
E. Todesco;L. Bottura;M. Giovannozzi;P. Hagen;M. Juchno;M. Lamont;E. Maclean;R. Tomas Garcia;M. Schaumann;F. Schmidt;M. Solfaroli Camillocci;J. Wenninger
After two years of shutdown, the Large Hadron Collider (LHC) operated in 2015 at an energy of 6.5 TeV. In this paper, we give the first outlook of the behavior of the LHC magnets operating at this field level, corresponding to 8-T peak field in the main dipoles. The main magnetic features are reconstructed through the beam measurements, mainly the tune (quadrupolar components) and the chromaticity...Show More
16 T Nb3Sn Racetrack Model Coil Test Result
J. C. Perez;H. Bajas;M. Bajko;L. Bottura;B. Bordini;A. Chiuchiolo;G. De Rijk;P. Ferracin;J. Feuvrier;P. Grosclaude;M. Juchno;E. Rochepault;J. Rysti;X. Sarasola
In the framework of the European project EuCARD, the High Field Magnet project, led by a CERN-CEA collaboration, implied the development of a large aperture Nb3Sn dipole magnet called FRESCA2. The magnet uses four double-pancake block-type coils, each about 1.5 m long. In order to characterize strand and cable properties, as well as to qualify the coil fabrication process, CERN started in 2012 the...Show More
Mechanical Qualification of the Support Structure for MQXF, the Nb3Sn Low- $\beta$ Quadrupole for the High Luminosity LHC
M. Juchno;G. Ambrosio;M. Anerella;H. Bajas;M. Bajko;N. Bourcey;D. W. Cheng;H. Felice;P. Ferracin;P. Grosclaude;M. Guinchard;J. C. Perez;H. Prin;J. Schmalzle
Within the scope of the High-Luminosity LHC project, the collaboration between CERN and U.S. LARP is developing new low- $\beta$ quadrupoles using the Nb3Sn superconducting technology for the upgrade of the LHC interaction regions. The magnet support structure of the first short model was designed, and two units were fabricated and tested at CERN and at LBNL. The structure provides the preload to...Show More
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