Birch, Stewart, Kolasch & Birch, LLP
Beam current sensor
A beam current sensor is composed of a cylindrical super-conductive body having a bridge unit formed on the outer diameter side wherein a beam passes through the inner diameter side. The sensor improves efficiency of creating a magnetic field from a current and can measure a beam current as 1 nA. The bridge unit includes a first coil unit formed so as to have an eddy shape wound counterclockwise from the outer diameter side toward the inner diameter side; a second coil unit formed so as to have an eddy shape wound clockwise from the outer diameter side toward the inner diameter side; and a connection portion for connecting the center position of the inner diameter side of the first coil unit with the center position of the inner diameter side of the second coil.
Riken Panasonic Corporation
G
G01R
inventional
Shin-ichi Takeo Takeshi Hisataka Tamaki Yu-ichiro Tokihiro Bunji Masayuki
Watanabe Kawaguchi Katayama Kanada Watanabe Sasaki Ikeda Mizuno Kase