Long Rotating Coil System Based on Stretched Tungsten Wires for Insertion Device Characterization

A very precise rotating coil was developed using stretched tungsten wires in a new geometric arrangement for the accurate magnetic characterization of insertion devices (IDs). Many sources of errors were analyzed, and a procedure to evaluate coil defects by means of a dipolar magnetic field is prese...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2008-10, Vol.57 (10), p.2339-2347
Main Authors: Tosin, G., Citadini, J.F., Conforti, E.
Format: Article
Language:English
Subjects:
Brazil
Coiling
Coils
Devices
Error analysis
Insertion
Insertion devices (IDs)
Intrusion detection
Magnetic analysis
magnetic characterization
Magnetic devices
Magnetic field measurement
Performance evaluation
Rotating
rotating coil
Synchrotrons
Testing
Tungsten
tungsten wires
wiggler
Wire
Wires
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Description
Summary:A very precise rotating coil was developed using stretched tungsten wires in a new geometric arrangement for the accurate magnetic characterization of insertion devices (IDs). Many sources of errors were analyzed, and a procedure to evaluate coil defects by means of a dipolar magnetic field is presented. Tests were performed in a 2-T planar wiggler, which is 2.8 m long, with 180 mm of period, of the Brazilian synchrotron light source (LNLS). The advantages of using the tungsten wires and the measurement repeatability and accuracy are also discussed.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2008.922093