Experience with measuring magnetic moments of permanent magnet blocks at Lawrence Berkeley Laboratory
Since May 1985, The Magnetic Measurements Engineering Group at LBL has measured and sorted a total of 3834 permanent magnet blocks. These magnetic blocks have been used in the construction of various successful beam-line elements including dipoles, quadrupoles, and wigglers. We report on observed variations in magnetic moments among blocks supplied by five manufacturers, describe the operational capabilities (accuracy, precision, and resolution) of the LBL Magnetic-moment Measurement and Sorting System (MMSS), cite the results of comparative calibrations by permanent-magnet manufacturers and other National Laboratories, and suggest criteria for automating the MMSS for measuring the large number of permanent-magnet blocks required for the insertion devices for the projected LBL 1-2 GeV Synchrotron Radiation Source. 14 refs., 2 figs., 2 tabs.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- LBL-23103; CONF-870901-14
- DOE Contract Number:
- Resource Type:
- Resource Relation:
- Conference: 10. international conference on magnet technology (MT-10), Boston, MA, USA, 21 Sep 1987; Other Information: Portions of this document are illegible in microfiche products
- Research Org:
- Lawrence Berkeley Lab., CA (USA)
- Country of Publication:
- United States
- 42 ENGINEERING; PERMANENT MAGNETS; MAGNETIC MOMENTS; AUTOMATION; CALIBRATION; SORTING; TESTING; MAGNETS 420200* -- Engineering-- Facilities, Equipment, & Techniques
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