An object of the present invention is to provide a photon beam position correction monitoring apparatus for synchrotron radiation beamline which monitors a measurement light source (i.e., a detected photon beam) when it passes through a detection screen in a focused state and corrects the position of the photon beam with high accuracy. According to an embodiment of the present invention, the photon beam position correction monitoring apparatus for synchrotron radiation beamline, comprises: a detection screen disposed on a line which is discharged from a radiation beamline that uses a photon beam and which proceeds to a sample for detecting the position of the photon beam; a beam splitter provided at one side of the detection screen for splitting the photon beam detected by the detection screen; a first camera for monitoring a first photon beam via the beam splitter; a second camera for monitoring a second photon beam that passes through the beam splitter; and a control unit for processing data based on monitoring by the first camera and the second camera and adjusting a horizontal focusing mirror (HFM) and a vertical focusing mirror (VFM) disposed in front of the detection screen.
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