MAGNETIC ANALYZER APPARATUS AND METHOD FOR ION IMPLANTATION
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United States of America Patent
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Issued Date -
Oct 8, 2009
app pub date -
Jun 13, 2007
filing date -
Jun 13, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a magnetic analysis apparatus, high voltage insulation (86, 94) isolates the magnet excitation coil (40), power leads (90) and cooling fluid lines (92) from the ferromagnetic assembly (26, 28, 30, 32, 34) of a sector magnet, and the coil supply is disposed in a grounded housing (E). A sleeve (94), containing electric power leads and cooling fluid lines, forms an insulator through the magnet assembly to the coil (40) and the coil is surrounded by electrical insulation providing electrical isolation from the magnet assembly of least 20 KV. The excitation coil comprises alternating coil segments (80) and cooling plates (82) within an impervious cocoon (86) of insulating material of at least 6 mm thickness. Yoke and core members (20, 30, 32, 34) of the magnet assembly are disposed outside of the vacuum housing (20) while pole members (28) extend through and are sealed to walls of the vacuum housing. An ion decelerator (60, 61, 62) is in a housing extension at the same voltage potential as the mass analyzer housing.
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