Stripline-type beam-position-monitor system for single-bunch electron/positron beams

About 90 stripline-type beam-position monitors have been newly installed in the KEKB injector linac. These monitors easily reinforce the handling of beam orbits and measure the amount of beam charge for single-bunch electron and positron beams which are injected to the KEKB rings. The design value of the beam-position resolution is expected to be less than 0.1 mm. A new data-acquisition system based on VME/OS-9 computers has been developed in order to control the monitors in real time. A hardware and software system which includes 18 front-end computers was tuned for the linac commissioning. This report describes the hardware and software system, the monitor calibration, and the beam-test results in detail.