The equipment control system of the extended x-ray absorption fine structure beamline at Taiwan photon source

One of the beamlines at Taiwan Photon Source (TPS), numbered as TPS 44A, is for Extended X-ray Absorption Fine Structure experiments. The main components include a collimation mirror, a focusing mirror, and a quick-scan double crystal monochromator. There are also various diagnosis and monitoring equipment. It uses four-blade slits to constrain the beam size and block unwanted part. Besides, current amplifiers are attached to the slits. At the locations in front or at rear of some mirrors which can change the direction of the x-ray beam, there are fluorescent screens and cameras to observe positions and strength of the beam. Most of them need electronic motors or high-pressure air to be movable and controllable from a remote control system. If there exists one integrated control system for all equipment, it will be easier for the scientists to operate the beamline, adjust the conditions of various parameters, do the commissioning, and concentrate on the experiments.