Development of beam energy and position monitor system at RIBF

It is important to measure the beam energy of heavy-ion beams for production of radioisotopes for application studies such as nuclear chemistry and nuclear medicine. For the purpose of real-time measurement of the beam energy, electrostatic pickups were designed, fabricated, and installed in the beam transport line in the AVF cyclotron. Furthermore, aiming to measure the beam energy and the beam position simultaneously, we have developed beam diagnostic devices of high sensitivity and low noise. It is the purpose of the present paper to describe details concerning the beam energy and position monitor (BEPM) system, the results of experimental measurements using heavy-ion beams, an investigation of the sensitivities of the BEPM from the point of view the S/N ratio. (author)