A100-kV DC Stabilized Power Supply for Ion Acceleration of Two-Stage Double-Focusing Mass Spectroscope

概要

論文の詳細を見る
For ion acceleration of the two-stage double-focusing mass spectroscope, which adjustment works are going on at Osaka University, a 100-kV dc stabilized power supply has been designed and constructed. The specifications given the supply are as follows; 1) the continuous variation of the output voltage from30kV to 100kV, 2) the maximum output current of about2.5mA, 3) the tolerances on drift and ripple, respectively, remaining within one part in104over a period of ten minutes and within two parts in105, and4) the output stability of less than five parts in105for fluctuation of±5percent. The supply consists of two stages of regulation. The first stage regulator is of an oscillator-amplitude modulation type incorporating a Cockcroft-Walton type rectifier and stabilizes its output voltage to within one part per thousand less. The second stage regulator is of a conventional series tube type and accomplishes further improvement of two orders of magnitude on the stability. Thus, the final degree of stabilization is obtained to be of the order of one part in105. As a typical example, a steady long-term stability at the output voltage of100kV is well estimated to be3-5parts in105averaging over periods of an hour from the observation ranging over about eight hours.
日本質量分析学会の論文