An X-Ray BPM and Accompanying Electronics

Recent experiments at the Brazilian Synchrotron Ligth Source (LNLS) Ultra Violet and X-Ray beamlines are pushing on the Synchrotron Radiation (SR) beam position stability requirements. In the direction of having photon Beam Position Monitor integrated to the orbit closed loop control system, we developed a staggered blades XR BPM and a four-channel current measurement electronics. The BPM mechanical design was based on the SR masks previously developed and currently in use at the beamline front ends. By this design reuse, in addition to using a readily-available, well-tested and low cost construction technique, we expect to have a simple replacement of the SR masks by the XR BPMs in most of the beamlines, shortening the downtimes and the number of line parts to be replaced. We describe the design and the resulting performance of the XR BPM and the accompanying electronics.