OPTIMIZATION OF PHOTOEMISSION BLADE X-RAY BEAM POSITION MONITOR FOR WIDE RANGE OF UNDULATOR GAP OPERATION

Optimization of the photoemission blade type XBPM mostly performed to increase its resolution by increasing the readout signal current and by optimizing blades geometry. This requires tailoring of the XBPM for a particular undulator, making almost every XBPM unique at the Synchrotron Radiation facility. In many cases the calibration coefficient is gap dependent. To overcome those drawbacks an alternative optimization strategy is considered which will help to minimize gap dependence and could provide a unified XBPM design for all XBPM at Synchrotron Radiation (SR) facility.