Performance results of novel photoemission mask X-ray beam position monitor for ‘white’ undulator radiation

A prototype of a novel Photoemission Mask type X-ray Beam Position Monitor (PheM XBPM) for the ‘white’ undulator radiation which concept was proposed in Ref. [1] has been built and tested. The prototype was designed and manufactured at MAX IV. Two PheM XBPMs were installed at MAX IV 3 GeV storage ring at SoftiMAX and CoSAXS beamline frontends. Signal modelling, optimization and performance results of the PheM XBPM are discussed. [1]. https://accelconf.web.cern.ch/ibic2022/papers/mop44.pdf