Abstract
About 90 stripline-type beam position monitors (BPMs) have been newly installed in the KEKB injector linac. These monitors easily reinforce handling beam orbits and measuring the charge of single-bunch electrons and positrons 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 (DAQ) system has been developed in order to control these monitors in real time. The hardware and software of 18 front-end computers were tuned for the linac commissioning. This report describes the hardware and software system, the monitor calibration, and preliminary beam test results.
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