Evaluation of monthly variations in electrometer calibration coefficients using a charge generator for radiation therapy
Motohiro Kawashima,
Maria Varnava,
Shuichi Ozawa
et al.
Abstract:Electrometers are important devices that are part of the standard dosimetry system. Therefore, we evaluated the variation of electrometer calibration coefficients (kelec) over 1 year in this study. We investigated two types of electrometers: a rate mode and an integrate mode. Each electrometer was connected to a charge generator, a constant charge was applied, and kelec was determined by measuring the current. The current measurements were repeated once a month. For electrometers with multiple ranges, measurem… Show more
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