Design and Fabrication of the Superconducting Horizontal Bend Magnet for the Super High Momentum Spectrometer at Jefferson Lab

Conference · Mon Jun 01 00:00:00 EDT 2015 · IEEE Trans.Appl.Supercond.

DOI:https://doi.org/10.1109/TASC.2014.2380353· OSTI ID:1183206

Chouhan, Shailendra S. ^[1]; DeKamp, Jon ^[1]; Burkhart, E. E, ^[1]; Bierwagen, J. ^[1]; Song, H. ^[1]; Zeller, Albert F. ^[1]; Brindza, Paul D. ^[2]; Lassiter, Steven R. ^[2]; Fowler, Michael J. ^[2]; Sun, Qiuli (Eric) ^[2]

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1. Michigan State University
2. JLAB

A collaboration exists between NSCL and JLab to design and build JLab's Super High Momentum Spectrometer (SHMS) horizontal bend magnet that allows the bending of the 12 GeV/c particles horizontally by 3° to allow SHMS to reach angles as low as 5.5°. Two full size coils have been wound and are cold tested for both magnetic and structural properties. Each coil is built from 90 layers of single-turn SSC outer conductor cable. An initial test coil with one third the turns was fabricated to demonstrate that the unique saddle shape with fully contoured ends could be wound with Rutherford superconducting cable. Learned lessons during the trial winding were integrated into the two complete full-scale coils that are now installed in the helium vessel. The fabrication of the iron yoke, cold mass, and thermal shield is complete, and assembly of the vacuum vessel is in progress. This paper presents the process and progress along with the modified magnet design to reduce the fringe field in the primary beam region and also includes the impact of the changes on coil forces and coil restraint system.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1183206
• Report Number(s): JLAB-PHY-14-1965; DOE/OR/23177-3360
• Journal Information: IEEE Trans.Appl.Supercond., Vol. 25, Issue 3; Conference: ASC 2014 (Applied Superconductivity Conference) 10-15 Aug 2014. Charlotte, NC, USA
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS