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Variations in Magnetic Field Measurements for Different Magnet Configurations

This study presents findings from the Varian Magnet investigations conducted on three separate occasions from 2011 to 2013. Each test analyzed the magnetic performance of ferrous materials with varying air gap and pole configurations, including samarium-cobalt and neodymium magnets. Key metrics included estimated clamp force per unit, which was approximately 35 lb for samarium-cobalt and 80-90 lb for neodymium configurations. Additionally, leakage flux measurements were taken above and below the pole surfaces, revealing values below 0.005 T and 0.010 T, respectively, one inch away from the unit.

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Variations in Magnetic Field Measurements for Different Magnet Configurations

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  1. VARIAN MAGNET STUDY (11/04/11) FERROUS MATERIAL 0.030” AIR-GAP SAMARIUM COBALT POLE ALNICO ESTIMATED CLAMP FORCE PER UNIT ~35 LB. LEAKAGE FLUX < 0.005T (5 GAUSS) ABOVE POLE SURFACE AND < .015 (15 GAUSS) BELOW POLE SURFACE MEASURED 1” AWAY FROM UNIT

  2. VARIAN MAGNET STUDY (11/26/12) FERROUS MATERIAL 0.030” AIR-GAP Neodymium 42 SH POLE ALNICO ESTIMATED CLAMP FORCE PER UNIT ~35 LB. LEAKAGE FLUX < 0.005T (5 GAUSS) ABOVE POLE SURFACE AND < .010 (10 GAUSS) BELOW POLE SURFACE MEASURED 1” AWAY FROM UNIT

  3. VARIAN MAGNET STUDY (01/03/13) 0.020” AIR-GAP FERROUS MATERIAL 0.030” AIR-GAP Neodymium 42 SH POLE ALNICO ESTIMATED CLAMP FORCE PER UNIT ~ 80-90 LB. LEAKAGE FLUX < 0.005T (5 GAUSS) ABOVE POLE SURFACE AND < .010 (10 GAUSS) BELOW POLE SURFACE MEASURED 1” AWAY FROM UNIT

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