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Beam position monitor (BPM) can easily reinforce the handling of beam orbitsand measure the absolute beam position [1]. Its data can be used to optimizeand correct beam in both first turn and closed orbit mode. In order to set theabsolute center position of Button-type BPM, and formulate the offset betweenmechanic and electronic center precisely, we mounted BPM together with solenoidon a vertical rotated test-bench when its calibration takes out, and developedtransform software to calculate the offset. This paper describes the method andprocess of collaborate calibration: the assembly and alignment of BPM itself onthe designed work-bench; the mechanic calibration of bundle BPM-Solenoid, andthe alignment of mechanic to the wire center used by Laser Tracker and Portablecoordinate measurement machine (CMM) jointly; the connection of coaxial cableand read-out for electronics; the electronic calibration of bundleBPM-Solenoid. Form the above four steps, the author analyses the error sources,measures and subtracts the offset values, and formulate the positioncalculation formula of offset. At last, the residual offset is nearly 20um.Thetotal accuracy of calibration is 0.1mm.

The Collaborate Calibration and Alignment of Button-type BPM