Author
Vadim Kashikhin
Bio: Vadim Kashikhin is an academic researcher from Fermilab. The author has contributed to research in topics: Magnet & Superconducting magnet. The author has an hindex of 8, co-authored 39 publications receiving 245 citations.
Papers
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TL;DR: In this paper, the authors summarized the activities and plans for the development of these magnets, in particular within the 16 T Magnet Technology Program, the WP5 of the EuroCirCol, and the U.S. Magnet Development Program.
Abstract: 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 summarizes the activities and plans for the development of these magnets, in particular within the 16 T Magnet Technology Program, the WP5 of the EuroCirCol, and the U.S. Magnet Development Program.
42 citations
TL;DR: Several development programs for these magnets, based on Nb3Sn technology, are being pursued in Europe and in the U.S. as mentioned in this paper summarizes and discusses the status, plans, and preliminary results of these programs.
Abstract: 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 canted–cos–theta magnets are explored; first model magnets are under manufacture; limits on conductor stress levels are studied; and a conductor with enhanced characteristics is developed. This paper summarizes and discusses the status, plans, and preliminary results of these programs.
37 citations
TL;DR: In this paper, the first magnet assembly was done with lower coil pre-load to achieve 14 T and minimize the risk of coil damage during assembly, and the results of its cold tests were reported.
Abstract: Fermilab in the framework of the U.S. Magnet Devel-opment Program (MDP) has developed a $Nb_3Sn$ dipole demonstrator for a post-LHC hadron collider. The magnet uses 60-mm aperture 4-layer shell-type graded coils. The cable in the two inner-most layers has 28 strands 1.0 mm in diameter and the cable in the two outermost layers has 40 strands 0.7 mm in diameter. An inno-vative mechanical structure based on aluminum I-clamps and a thick stainless steel skin is used to preload $Nb_3Sn$ coils and support large Lorentz forces. The maximum field for this magnet is limited by 15 T due to mechanical considerations. The first magnet assembly was done with lower coil pre-load to achieve 14 T and minimize the risk of coil damage during assembly. This paper describes the magnet design and the details of its assembly procedure, and re-ports the results of its cold tests.
24 citations
TL;DR: In this paper, several different shell type coils were made by using the wind-and-react technique, installed in a mirror magnet configuration and tested at Fermilab, and the results revealed that the previously suspect splice technique is adequate and is not responsible for the quench performance limitation.
Abstract: Several different shell type coils were made by using the 'wind-and-react' technique, installed in a mirror magnet configuration and tested at Fermilab. The results revealed that the previously suspect splice technique is adequate and is not responsible for the quench performance limitation. Cable instability is the preferred candidate, however this might be coupled with other effects since all of the experimental results cannot be explained exclusively with cable instability.
22 citations
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CERN1
TL;DR: In this article, the authors reviewed the last ten year of Nb3Sn accelerator magnet R&D and compared it to the needs of the upgrades and critically assessed the results of the Nb 3Sn and HTS technology and the planned R&DD programs also based on the inputs of first year of LHC operation.
Abstract: The Large Hadron Collider is working at about half its design value, limited by the defective splices of the magnet interconnections. While the full energy will be attained after the splice consolidation in 2014, CERN is preparing a plan for a Luminosity upgrade (High Luminosity LHC) around 2020 and has launched a pre-study for exploring an Energy upgrade (High Energy LHC) around 2030. Both upgrades strongly rely on advanced accelerator magnet technology, requiring dipoles and quadrupoles of accelerator quality and operating fields in the 11-13 T range for the luminosity upgrade and 16-20 T range for the energy upgrade. The paper will review the last ten year of Nb3Sn accelerator magnet R&D and compare it to the needs of the upgrades and will critically assess the results of the Nb3Sn and HTS technology and the planned R&D programs also based on the inputs of first year of LHC operation.
208 citations
132 citations
TL;DR: The Integrable Optics Test Accelerator (IOTA) as discussed by the authors is a storage ring for advanced beam physics research currently being built and commissioned at Fermilab, USA.
Abstract: The Integrable Optics Test Accelerator (IOTA) is a storage ring for advanced beam physics research currently being built and commissioned at Fermilab. It will operate with protons and electrons using injectors with momenta of 70 and 150 MeV/c, respectively. The research program includes the study of nonlinear focusing integrable optical beam lattices based on special magnets and electron lenses, beam dynamics of space-charge effects and their compensation, optical stochastic cooling, and several other experiments. In this article, we present the design and main parameters of the facility, outline progress to date and provide the timeline of the construction, commissioning and research. The physical principles, design, and hardware implementation plans for the major IOTA experiments are also discussed.
119 citations
TL;DR: In this article, the authors summarize the status of Nb 3 Sn development in the USA and discuss low magnetic field instability in magnets that re-emerged through the use of very high current density Nb3 Sn wires, and solutions that address these stability problems.
89 citations
TL;DR: The field of colliders remains extremely dynamic and continues to develop many innovative approaches as mentioned in this paper, and several novel concepts are currently being considered for designing and constructing even more powerful future colliders.
Abstract: Since the initial development of charged particle colliders in the middle of the 20th century, these advanced scientific instruments have been at the forefront of scientific discoveries in high energy physics over the past 60 years. Collider accelerator technology and beam physics have progressed immensely and modern facilities now operate at energies and luminosities many orders of magnitude greater than the pioneering colliders of the early 1960s. In addition, the field of colliders remains extremely dynamic and continues to develop many innovative approaches. Indeed, several novel concepts are currently being considered for designing and constructing even more powerful future colliders. In this paper, we first review the colliding beam method and the history of colliders, and then present, in detail, the major achievements of operational machines and the key features of near-term collider projects that are currently under development. We conclude with an analysis of numerous proposals and studies for far-future colliders. The evaluation of their respective potentials reveals tantalizing prospects for further significant breakthroughs in the collider field.
84 citations