Linear beam raster magnet driver based on H-bridge technique
Patent
·
OSTI ID:1175781
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.
- Research Organization:
- Southeastern Universities Research Association, Inc.,Newport News, VA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-84ER40150
- Assignee:
- Southeastern Universities Research Association, Inc.
- Patent Number(s):
- 7,057,390
- Application Number:
- 10/945,408
- OSTI ID:
- 1175781
- Country of Publication:
- United States
- Language:
- English
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