Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 89, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5035332
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Funding
- Italian Space Agency (ASI-LSPE contract)
- National Institute for Nuclear Physics (INFN-LSPE activity)
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We describe a simple and reliable clamp/release system for the rotor of large superconducting magnetic bearings. The system was developed for a cryogenic half-wave plate spinner for cosmic microwave background polarimetry but can have other applications. The main features of this system are its large rotor mass compliance (similar to 10 kg); zero power dissipation while holding the rotor and zero power dissipation when the rotor is released; fast (similar to 40 ms), balanced release and clamp actions, and lowpower dissipation (similar to 30 J) on the cold stage during each operation; low cost; and high reliability over a very large number of operation cycles. Published by AIP Publishing.
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