SYSTEM FOR MEASURING IONIZATION CHAMBER CURRENTS IN EXPERIMENTS WITH SYNCHROTRON RADIATION
D. V. Dorokhov, E. A. Kuper
a:2:{s:4:"TEXT";s:139:"Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 11, Novosibirsk, 630090 Russia";s:4:"TYPE";s:4:"text";}
Keywords: low-current meter, sigma-delta ADC, ionization chamber
Subsection: AUTOMATION SYSTEMS IN SCIENTIFIC RESEARCH AND INDUSTRY
Abstract
A device for measuring ionization chamber currents in the range from 5·10–15 to 3·10–6 A is presented. The intrinsic noise is analyzed and it shown that its root-mean-square value does not exceed the estimated minimum of 5 fA. The device is designed for experiments with synchrotron radiation, but it can also be used in applications requiring low-current measurements.
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