Alternative Concepts for Structurally Supporting the Cold Mass of a Superconducting Accelerator Magnet

Sondericker, J.; Wolf, Lawrence J.

doi:10.1007/978-1-4615-3746-5_16

Cited by 8 publications

(3 citation statements)

References 1 publication

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“…This architecture has been found in the magnet feeder system of ITER (International Thermonuclear Experimental Reactor) [38,39], the cryodipoles and SSS (Short Straight Section) of LHC [42,43], the cryomagnets of RHIC (Relativistic Heavy Ion Collider) [31], the cryomagnets of SSC (Superconducting Super Collider) [35], and the linac cryomodules of LCLS-II (Linac Coherent Light Source II) [37]. While, for the majority of the suspension systems, the posts are placed on the bottom side of the cold mass, in LCLS-II, these are placed on its upper side.…”

Section: The "Multi-post" Architecture and Geometrymentioning

confidence: 89%

Literature Review of Suspension Systems for Superconducting Elements

Piacentini,

Dassa,

Perini

et al. 2023

Machines

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When designing suspension systems for superconducting elements, the primary challenge is to strike a balance between limiting the heat load to the cold mass and ensuring the proper mechanical resistance and/or stiffness of the system. This trade-off often leads engineers to choose from a limited set of materials and supporting architectures. The aim of this study is to provide an overview of the different overall designs. Scientific articles were searched within the Google Scholar database using advanced search operators to combine a defined set of keywords. Among the architectures found, the “multi-post” solution and the “8-support” solution are the two most commonly chosen classes. Additionally, a recurrent pattern for the supporting system of superconducting cavities has been identified. The choice of architecture can be correlated with the characteristics of the superconducting element being supported, such as its mass, length, and stiffness. Furthermore, the review provides a conceptual analysis of the possibility of extending these designs to the unconventional environment of rotating machines.

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Section: The "Multi-post" Architecture and Geometrymentioning

confidence: 89%

Literature Review of Suspension Systems for Superconducting Elements

Piacentini,

Dassa,

Perini

et al. 2023

Machines

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“…The 6rat serious attempt to introduce a simplified cost reduced alternative to the reentrant poat wu presented durine the RHIC Magnet Design Review on February, 1990 at Brookhaven National Laboratory. 3 The preliminary results of the feasibility study (or an injection molded composite support post were very encouraging.…”

Section: Bmentioning

confidence: 95%

Alternate Design Concept for the SSC Dipole Magnet Cryogenic Support Post

1991

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New materials and developments in the field of advanced composites have created the opportunity to take a fresh look into the design of the cryogenic supports for SSC collider dipole cryostats. Although the present reentrant post design meets the structural and thermal requirements, its assembly requires precision and proficiency. The objective of the proposed alternate concept is to reduce the overall cost of the support post by means of simplifying and optimizing its component design and assembly process. The present shrink fitted tube assembly may potentially be replaced by injection molded parts. New resin systems with lower thermal conductivity and high strength properties enable the utilization of automated production techniques such as injection molding and filament winding. This paper will provide analysis and design information for the alternate support post concept and compare its test performance and cost to the present support post.

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“…The paper 84 by Sondericker and Wolf gives many of the engineering considerations, design tradeoffs, and test results for this noteworthy magnet part. The figure shows a dipole magnet with the support post outlined with darker lines.…”

Section: Superconductor Studies In the Labmentioning

confidence: 99%

Building Magnets at Brookhaven National Laboratory - An Account

Willen¹

2017

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Cover Illustration:The drawing shows the field in a RHIC dipole magnet when powered to operating current. The outer circle represents the 80 mm magnet coil diameter. The green central portion shows the "good" part of the 3.45 T field: where its strength is uniform to within ± two parts in 10 4 . The colored contours represent field changes of two parts in 10 4 of the central field. The white center circle shows an area encompassing 95% of the particles in a gold heavy ion beam traversing the magnet. Note that the beam is safely within the good field region of the magnet. This is a first-person account of some of the events in the development of high field superconducting magnets for the SSC and RHIC colliding beam machines in the 1980's and early 1990's at Brookhaven National Laboratory (BNL). 1 It is a history that is not well known and about which various people have expressed some curiosity. It is written in plain English (hopefully) instead of the jargon of the trade to make it more readable. In those years, after the demise of the BNL Isabelle/CBA program, the Magnet Division (MD) became heavily engaged in R&D for the SSC with a peak work force of some 175 physicists, engineers, designers, technicians, and support personnel. In addition to the SSC work, the Division in parallel developed the magnets for RHIC and transferred the drawings and technology for building those magnets to industry. It also undertook Work for Others that could be accomplished by the MD staff or facilities (please see the Topic, MD: Projects Beyond SSC & RHIC for a listing). Numerous innovative and significant magnet construction and design features were developed by the Division in those years (please see the section named New Designs & Techniques later in this account for a partial listing). Although the SSC dipole magnet was ready for industrial production well before 1993, the program was ended by Congress in that year and its magnets were never produced in quantity. The full complement (1740 plus spares) of RHIC magnets, however, was built: arc dipoles, quadrupoles, and sextupoles by industry, arc correctors and those fewer in number at BNL. The RHIC magnets have had a storied history---not a single dipole, quadrupole, or sextupole magnet has failed in the years that the machine has been operating beginning in 2000; one corrector coil has had to be replaced. Ramesh Gupta (shown in picture), Introduction, Magnetic Design and Analysis  Animesh Jain, Magnet Theory and Magnetic Measurements  Carl Goodzeit, Magnet Engineering Millicent (Penny) Ball and her colleagues developed and marketed, with DOE funding, a CD-ROM tutorial describing the design, engineering and building of superconducting magnets after the SSCL, where she had been working, was closed.A good description of the RHIC magnet system (and the other RHIC Collider systems) can be found in the comprehensive account published in the journal Nuclear Instruments and Methods in 2003. 5 This account is mostly about events that happened years ago. It is based on my recollect...

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Alternative Concepts for Structurally Supporting the Cold Mass of a Superconducting Accelerator Magnet

Cited by 8 publications

References 1 publication

Literature Review of Suspension Systems for Superconducting Elements

Literature Review of Suspension Systems for Superconducting Elements

Alternate Design Concept for the SSC Dipole Magnet Cryogenic Support Post

Building Magnets at Brookhaven National Laboratory - An Account

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