A precise direct-current meter with a 1nA resolution, operating in the wide dynamic range of 1 nA - 100 µA (i.e. 100 dB, without a need to change ranges, not even automatically), optionally acting as an integrator. The device is powered and communicates over a USB connection with a computer to which measured data are sent in 1s intervals. The meter was primarily designed to monitor beam current of an accelerator, but is generally usable.
FIG. 1: Precise direct-current meter with a 1nA resolution.
The accelerator and the laboratory are operated and upgraded in frame of the research funding grant "VdG Research infrastructure" by the Ministry of Education, Youth and Sports of the Czech Republic (Contract No. LM2015077).
Last update: January 2022