Power supply for fast-scanning magnet in proton therapy: Design and test

2022 ◽  
Vol 93 (1) ◽  
pp. 014702
Author(s):  
Jushigang Yuan ◽  
Shiqiang Pang ◽  
Taiyan Chen ◽  
Zijian Zhou ◽  
Jiabao Zou ◽  
...  
Keyword(s):  
Proton Therapy ◽  
Power Supply ◽  
Therapy Design ◽  
Scanning Magnet

scholarly journals A robotic C-arm cone beam CT system for image-guided proton therapy: design and performance

2017 ◽  
Vol 90 (1079) ◽  
pp. 20170266 ◽  
Author(s):  
Chiaho Hua ◽  
Weiguang Yao ◽  
Takao Kidani ◽  
Kazuo Tomida ◽  
Saori Ozawa ◽  
...  
Keyword(s):  
Proton Therapy ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Image Guided ◽  
Ct System ◽  
And Performance ◽  
Therapy Design

Manufacture of a Scanning Magnet Power Supply Used in Industrial Radiation Accelerator

2012 ◽  
Vol 516-517 ◽  
pp. 1382-1385
Author(s):  
Cheng Da Yu ◽  
Gang Li ◽  
Zhi Qiang Li ◽  
Yong Feng Wang
Keyword(s):  
Magnetic Field ◽  
Control System ◽  
Power Supply ◽  
Step Length ◽  
Single Chip ◽  
Peak Current ◽  
Industrial Radiation ◽  
Scanning Magnet

The design of a scanning magnet power-supply used in a 10MeV industrial radiation accelerator is presented in this paper. The consideration of linear magnetic field current and the principle of triangle wave modulator are included. In addition, the control system based on single chip and its anti-jamming scheme in industrial circumstance are also introduced. The scanning magnet power-supply can produce continuous triangle waveform current. The frequency can be adjusted by step length of 1Hz ranged from 20Hz to 50Hz, and the peak-to-peak current is 20A.

New replica method with plasma polymerized film by glow discharge

1988 ◽  
Vol 46 ◽  
pp. 414-415
Author(s):  
A. Tanaka ◽  
M. Yamaguchi ◽  
T. Hirano
Keyword(s):  
Power Supply ◽  
Plasma Polymerization ◽  
Vacuum Chamber ◽  
Complex Surface ◽  
Replica Method ◽  
Metal Extraction ◽  
High Voltage Power Supply ◽  
Negative Glow ◽  
Hydrocarbon Gas ◽  
Hydrocarbon Molecules

The plasma polymerization replica method and its apparatus have been devised by Tanaka (1-3). We have published several reports on its application: surface replicas of biological and inorganic specimens, replicas of freeze-fractured tissues and metal-extraction replicas with immunocytochemical markers.The apparatus for plasma polymerization consists of a high voltage power supply, a vacuum chamber containing a hydrocarbon gas (naphthalene, methane, ethylene), and electrodes of an anode disk and a cathode of the specimen base. The surface replication by plasma polymerization in negative glow phase on the cathode was carried out by gassing at 0.05-0.1 Torr and glow discharging at 1.5-3 kV D.C. Ionized hydrocarbon molecules diffused into complex surface configurations and deposited as a three-dimensionally polymerized film of 1050 nm in thickness.The resulting film on the complex surface had uniform thickness and showed no granular texture. Since the film was chemically inert, resistant to heat and mecanically strong, it could be treated with almost any organic or inorganic solvents.

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