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

Hiromitsu NAKABUSHI; Tadatetsu HATTORI; Koreichi OGATA

doi:10.5702/massspec1953.22.1

Hiromitsu NAKABUSHI, Tadatetsu HATTORI, Koreichi OGATA

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1974 Volume 22 Issue 1 Pages 1-14

DOI https://doi.org/10.5702/massspec1953.22.1

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Published: March 31, 1974 Received: March 10, 1974 Available on J-STAGE: June 28, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: June 28, 2010 Reason for correction: - Correction: AFFILIATION Details: Wrong :
1) Department of Physics, Faculty of Science, Osaka University.(Osaka560, Japan)
2) Naka Works, Hitachi, Ltd(Ibaraki312, Japan)

Right :
1) Department of Physics, Faculty of Science, Osaka University.
2) Naka Works, Hitachi, Ltd

Date of correction: June 28, 2010 Reason for correction: - Correction: CITATION Details: Wrong : E
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Right : J.L.Benson,Ph.D.Thesis,University of Minnesota,1965,unpublished.
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I. Katakuse, Ph. D. Thesis, Osaka University, 1972, unpublished.

Date of correction: June 28, 2010 Reason for correction: - Correction: PDF FILE Details: -

Abstract

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.

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