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Title: Demagnetization of a complete superconducting radiofrequency cryomodule: Theory and practice

Here, a significant advance in magnetic field management in a fully assembled superconducting radiofrequency (SRF) cryomodule has been achieved and is reported here. Demagnetization of the entire cryomodule after assembly is a crucial step toward the goal of average magnetic flux density less than 0.5 μT at the location of the superconducting radio frequency cavities. An explanation of the physics of demagnetization and experimental results are presented.
Authors:
ORCiD logo [1] ;  [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Report Number(s):
arXiv:1606.05570; FERMILAB-PUB-16-569-TD
Journal ID: ISSN 1051-8223; 1471123
Grant/Contract Number:
AC02-07CH11359
Type:
Published Article
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Name: IEEE Transactions on Applied Superconductivity; Journal ID: ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; demagnetization; SRF; cryomodule; cavity resonators; remanence; magnetic flux density; magnetization; magnetic shielding
OSTI Identifier:
1338420
Alternate Identifier(s):
OSTI ID: 1335126; OSTI ID: 1335139; OSTI ID: 1338421