Damped superconducting coil system having a multiturn, planar geometry superconducting coil and shunt resistors electrically connecting successive coil turns

US6169397A · kind A · utility

Assignees

• The Regents of the University of Technology Office of Technology Transfer · US
• National Institute of Standards and Technology · US

Inventors

• Andrew Steinbach · San Jose, US
• Martin Huber · Uttenreuth, DE
• Ronald Hajime Ono · Boulder, US

Key dates

• Filing date: Aug 13, 1998
• Grant date: Jan 2, 2001
• Expiry date: Aug 13, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/846
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The operation of a planar geometry superconducting coil used in conjunction with a ground plane is improved by intracoil damping. This damping reduces coil resonances. The improvement consists of an intracoil shunt, which damps the resonances of the coil by connecting each turn, or loop, of the multiturn/multiloop coil with resistors. One example of a planar geometry superconducting coil which is effectively damped according to the present invention is the input coil to a superconducting quantum interference device (SQUID). The intracoil shunt may be added to the SQUID at the same time in the SQUID fabrication as the junction shunts.