发明名称 |
Linear beam raster magnet driver based on H-bridge technique |
摘要 |
An improved raster magnet driver for a linear particle beam is based on an H-bridge technique. Four branches of power HEXFETs form a two-by-two switch. Switching the HEXFETs in a predetermined order and at the right frequency produces a triangular current waveform. An H-bridge controller controls switching sequence and timing. The magnetic field of the coil follows the shape of the waveform and thus steers the beam using a triangular rather than a sinusoidal waveform. The system produces a raster pattern having a highly uniform raster density distribution, eliminates target heating from non-uniform raster density distributions, and produces higher levels of beam current.
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申请公布号 |
US7057390(B1) |
申请公布日期 |
2006.06.06 |
申请号 |
US20040945408 |
申请日期 |
2004.09.20 |
申请人 |
SOUTHEASTERN UNIV. RESEARCH ASSN. |
发明人 |
SINKINE NIKOLAI I.;YAN CHEN;APELDOORN CORNELIS;DAIL JEFFREY GLENN;WOJCIK RANDOLPH FRANK;GUNNING WILLIAM |
分类号 |
G01V3/00;H05B37/02 |
主分类号 |
G01V3/00 |
代理机构 |
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