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1992•IEEE Transactions on MagneticsRequires access

A high field superconducting wiggler for MAX-lab at Lund, Sweden

Jarl-Thure Eriksson, Lauri Kettunen, R. Mikkonen, L. Söderlund

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Abstract

A three-pole superconducting wiggler magnet comprising six racetrack NbTi coils kept together by iron yokes has been built and is being tested. The magnet will be installed in a 1.5-GeV electron storage ring at the University of Lund (Sweden) in order to achieve X-rays in the 1-3-AA domain. After 11 quenches the central flux density is 4.4 T, which is about 60% of the design value. The helium evaporation is below 5 l/h. The magnet geometry is based on 3-D field calculation with a specified period length below 240 mm. An adjustment current of the side coils ensures a zero integral over the whole field range. Due to the short available straight section in the storage ring, the total system length, i.e., including the cryostat, is limited to 900 mm.>

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What this paper is about

A three-pole superconducting wiggler magnet comprising six racetrack NbTi coils kept together by iron yokes has been built and is being tested. The magnet will be installed in a 1.5-GeV electron storage ring at the University of Lund (Sweden) in order to achieve X-rays in the 1-3-AA domain. After 11 quenches the central flux density is 4.4 T, which is about 60% of the design value. The helium evaporation is below 5 l/h. The magnet geometry is based on 3-D field calculation with a specified period length below 240 mm. An adjustment current of the side coils ensures a zero integral over the whole field range. Due to the short available straight section in the storage ring, the total system length, i.e., including the cryostat, is limited to 900 mm.>

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Available abstract

A three-pole superconducting wiggler magnet comprising six racetrack NbTi coils kept together by iron yokes has been built and is being tested. The magnet will be installed in a 1.5-GeV electron storage ring at the University of Lund (Sweden) in order to achieve X-rays in the 1-3-AA domain. After 11 quenches the central flux density is 4.4 T, which is about 60% of the design value. The helium evaporation is below 5 l/h. The magnet geometry is based on 3-D field calculation with a specified period length below 240 mm. An adjustment current of the side coils ensures a zero integral over the whole field range. Due to the short available straight section in the storage ring, the total system length, i.e., including the cryostat, is limited to 900 mm.>

Key concepts: Wiggler, Cryostat, Magnet, Superconducting magnet, Storage ring, Physics, Nuclear physics, Electromagnetic coil

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