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Title: Commissioning Validation of CLAS-12 Torus Magnet Protection and Cryogenic Safety System

This paper provides an overview of the CLAS12 Torus magnet electromagnetic loss and energy balance in the magnet system and impact on the cryogenics system during an event of a fast dump and quench, as part of the commissioning activities within Hall B for the 12 GeV Accelerator Upgrade project at Jefferson Lab in November 2016. Test carried out validates the design of torus magnet protection and cryogenic safety system. This magnet is unique in that it comprises 6 superconducting coils which are individually conduction-cooled by helium, thereby providing an element of thermal and mechanical decoupling between the coils. Lastly, as such its behavior under a fast dump condition (and even a quench) is markedly different from that of more conventional bath-cooled superconducting magnets.
Authors:
ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [2]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. ITER Organization, St. Paul Lez Durance (France)
Publication Date:
Report Number(s):
JLAB-PHY-18-2654; DOE/OR/-23177-4371
Journal ID: ISSN 1051-8223
Grant/Contract Number:
AC05-06OR23177
Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 28; Journal Issue: 6; Journal ID: ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
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
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Coils; Superconducting magnets; Helium; Magnetic noise; Magnetic shielding; Toroidal magnetic fields; Cooling; Conduction cooling; energy balance; fast discharge; magnet; quench; safety valve; torus
OSTI Identifier:
1458458