Two colinear dipole magnets with orthogonally oriented magnetic fields are driven by the system to produce a rectangular field (40 x 40 cm max.) with a uniform dose (+-2.5%) to a target volume 6 meters away. Dwinell, R.Ī power supply system is currently being designed and constructed to sweep an 8.0 Tesla-meter relativistic heavy ion beam in a raster scanning mode for radiotherapy use. • The sensitivity of our system is proved to be higher than that of raster scanningĪ raster scanning power supply system for controlling relativistic heavy ion beams at the Bevalac Biomedical Facility • The Poisson shot noise in the measurement is analyzed. • A single point avalanche photodiode is used without raster scanning. Highlights: • We design a single photon imaging system with compressed sensing. From analysis of the signal-to-noise ratio in the measurement we find that our system has much higher sensitivity than conventional ones based on point-by-point raster scanning, while the measurement time is also reduced. With this system, we have successfully realized imaging at the single-photon level with a single-pixel avalanche photodiode without point-by-point raster scanning. Yu, Wen-Kai Liu, Xue-Feng Yao, Xu-Ri Wang, Chao Zhai, Guang-Jie Zhao, QingĪ single-photon imaging system based on compressed sensing has been developed to image objects under ultra-low illumination. Single-photon compressive imaging with some performance benefits over raster scanning This article will discuss original specifications, agreement with measured results and special device performance (i.e. The scanner system will provide tightly controlled beam uniformity and off-axis treatment profiles with large aspect ratios and unusual dimensions. Dwinell, R.Ī raster scanning power supply for controlling an 8.0 Tesla-meter relativistic heavy-ion beam at the Biomedical Facility has been recently completed and is undergoing electrical testing before on- line operation in 1989. International Nuclear Information System (INIS) Operational results for the raster scanning power supply system constructed at the Bevalac Biomedical Facility
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