FAST DIGITAL METER OF THE PHASE DIFFERENCE BETWEEN THE ION BEAM AND ACCELERATING VOLTAGE SIGNALS
G. V. Karpov1, A. S. Styuf1,2
a:2:{s:4:"TEXT";s:240:"1Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 11, Novosibirsk, 630090, Russia
2Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090 Russia";s:4:"TYPE";s:4:"html";}
Keywords: digital signal processing, phase measurement, quadrature detection, synchronous detection
Subsection: AUTOMATION SYSTEMS IN SCIENTIFIC RESEARCH AND INDUSTRY
Abstract
A fast meter of the phase difference of two arbitrarily shaped signals at a frequency of 0.2 to 6 MHz is proposed. The device allows measuring the phase difference for the first harmonic with an error of not more than 1° within ~20 μs. The signal frequency and amplitude may vary at a speed of up to 20 MHz/s and 40 dB/sec, respectively. Basic signal processing and phase calculation are implemented digitally in a field programmable gate array. The electronics design features are presented, the signal processing methods are described, and the meter parameters and the results obtained on the physical facility are given.
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