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Title: Design and Manufacture of the Conduction Cooled Torus Coils for the Jefferson Lab 12GeV Upgrade

The design of the 12-GeV torus required the construction of six superconducting coils with a unique geometry required for the experimental needs of Jefferson Laboratory Hall B. Each of these coils consists of 234 turns of copper-stabilized superconducting cable conduction cooled by 4.6 K helium gas. The finished coils are each roughly 2 × 4 × 0.05 m and supported in an aluminum coil case. Because of its geometry, new tooling and manufacturing methods had to be developed for each stage of construction. The tooling was designed and developed while producing a practice coil at Fermi National Laboratory. This paper describes the tooling and manufacturing techniques required to produce the six production coils and two spare coils required by the project. Project status and future plans are also presented.
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Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-ACE-14-1939; DOE/OR/23177-3157
DOE Contract Number:
Resource Type:
Resource Relation:
Journal Name: IEEE Trans.Appl.Supercond.; Journal Volume: 25; Conference: Applied Superconductivity Conference (ASC 2014), 10-15 Aug 2014. Charlotte, NC, USA
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
43 PARTICLE ACCELERATORS SSC cable, fabrication, coil, torus, Superconducting magnet, epoxy potting