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The Ninth International Conference on Synchrotron Radiation Instrumentation May 28 June 2, 2006, DAEGU, EXCO, KOREA...

Magnetic Field Measurement System...

Joe Kulesza , Eric Johnson, Aaron Lyndaker, Alex Deyhim, Dave Waterman, K. Ingvar Blomqvist, Jonathan Hunter Dunn ...

Advanced Design Consulting USA, 126 Ridge Road, P.O. Box 187, Lansing, NY 14882, USA MAX-lab, SE-221 00 Lund, Sweden...

Abstract. A magnetic field measurement system was designed, built and installed at MAX Lab, Sweden for the purpose of characterizing the magnetic field produced by Insertion Devices. The measurement system consists of a large granite beam roughly 2 feet square and 14 feet long that has been polished beyond laboratory grade for flatness and straightness. The granite precision coupled with the design of the carriage yielded minimum position deviations as measured at the probe tip. The Hall probe data collection and compensation technique allows exceptional resolution and range while taking data on the fly to programmable sample spacing. Additional flip coil provides field integral data....

Keywords Undulators, Insertion Devices, Magnets, Flip Coil, Granite PACS 07.07.-a, 07.85.Qe, 07.55.Ge....

INTRODUCTION...

A stand-alone, turn-key, magnetic field measurement bench for the characterization of the field produced by insertion devices is presented. This state-of-the-art magnetic field measurement system is vital for the shimming process of the magnets in both in-vacuum and in-air devices. Field data is acquired in 3 orthogonal axes. The device exceeds the precision typically achieved with a rail system mounted to the insertion device and would pay for itself through the elimination of only a few rails systems. The measurement system can also be used for characterization of devices after shipment, for on-site acceptance testing, periodic maintenance and upgrades, and actual shimming as necessary. Combined with an ADC flip coil the first and second order field integrals can be measured to provide complete device characterization....

MECHANICAL DESCRIPTION...

The magnetic field measurement system is based on a granite beam for accuracy and stability. Special mounts are provided with vibration dampening characteristics. Levelers provided on the mounts for 3 point leveling. The front edge of the granite beam is the precise surface on which the carriage is guided. This is the right hand side facing the laser mount end. The long axis is driven by a linear servo motor. The magnetic track for this mo...

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Publications 2 data max lab sweden mms spec

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