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Quench analysis of a superconducting magnet with 98 coils connected in series

Wallén, Erik LU (2003) In IEEE Transactions on Applied Superconductivity 13(4). p.3845-3855
Abstract
A novel insertion device for electron storage rings called the MAX-Wiggler has been constructed at MAX-lab. The MAX-Wiggler is a cold bore superconducting wiggler magnet with 47 3.5-T poles and. a period length of 61 mm aimed for the production of X-rays at the 1.5-GeV electron storage ring MAX-II at MAX-lab. The MAX-Wiggler consists of 98 racetrack coils connected in series in the superconducting magnet and the total stored magnetic energy at the nominal maximum field strength of 3.5 T is 48 U. This paper describes the quench analysis of the magnet. Several protection schemes have,been evaluated, such as an external dump resistor and safety switch or subdivision of the series of coils into sections with shunt resistors or silicon diodes... (More)
A novel insertion device for electron storage rings called the MAX-Wiggler has been constructed at MAX-lab. The MAX-Wiggler is a cold bore superconducting wiggler magnet with 47 3.5-T poles and. a period length of 61 mm aimed for the production of X-rays at the 1.5-GeV electron storage ring MAX-II at MAX-lab. The MAX-Wiggler consists of 98 racetrack coils connected in series in the superconducting magnet and the total stored magnetic energy at the nominal maximum field strength of 3.5 T is 48 U. This paper describes the quench analysis of the magnet. Several protection schemes have,been evaluated, such as an external dump resistor and safety switch or subdivision of the series of coils into sections with shunt resistors or silicon diodes in parallel to each group of coils in a section. It has been found that the most suitable protection scheme, in order to prevent the superconducting coils from getting overheated, is subdivision with a shunt path containing silicon diodes operating at liquid helium temperatures. The MAX-Wiggler has been commissioned and it has survived the quenches occurring during the initial training of the superconducting coils. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
superconducting coils, quench protection, quench analysis, cold diodes, quench, superconducting magnets
in
IEEE Transactions on Applied Superconductivity
volume
13
issue
4
pages
3845 - 3855
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000187886100005
  • scopus:0346076765
ISSN
1051-8223
DOI
language
English
LU publication?
yes
id
d350b127-5412-4cbd-859a-87b0b61054d5 (old id 290094)
date added to LUP
2007-09-23 14:24:27
date last changed
2018-05-29 10:10:54
@article{d350b127-5412-4cbd-859a-87b0b61054d5,
  abstract     = {A novel insertion device for electron storage rings called the MAX-Wiggler has been constructed at MAX-lab. The MAX-Wiggler is a cold bore superconducting wiggler magnet with 47 3.5-T poles and. a period length of 61 mm aimed for the production of X-rays at the 1.5-GeV electron storage ring MAX-II at MAX-lab. The MAX-Wiggler consists of 98 racetrack coils connected in series in the superconducting magnet and the total stored magnetic energy at the nominal maximum field strength of 3.5 T is 48 U. This paper describes the quench analysis of the magnet. Several protection schemes have,been evaluated, such as an external dump resistor and safety switch or subdivision of the series of coils into sections with shunt resistors or silicon diodes in parallel to each group of coils in a section. It has been found that the most suitable protection scheme, in order to prevent the superconducting coils from getting overheated, is subdivision with a shunt path containing silicon diodes operating at liquid helium temperatures. The MAX-Wiggler has been commissioned and it has survived the quenches occurring during the initial training of the superconducting coils.},
  author       = {Wallén, Erik},
  issn         = {1051-8223},
  keyword      = {superconducting coils,quench protection,quench analysis,cold diodes,quench,superconducting magnets},
  language     = {eng},
  number       = {4},
  pages        = {3845--3855},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Applied Superconductivity},
  title        = {Quench analysis of a superconducting magnet with 98 coils connected in series},
  url          = {http://dx.doi.org/},
  volume       = {13},
  year         = {2003},
}