Photon beam position monitor

Abstract
A highly sensitive beam position monitor has been designed for use with synchrotron radiation sources. This beam position monitor consists of two gas‐flow ionization chambers having three parallel plate conductors. The incident beam is divided by a central plate. Therefore, a displacement of the beam position is detected with the two outside ionization chambers. The position monitor was tested at the BL6Cl beamline of the Photon Factory (PF). The results show a good performance.

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