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- W4362693586 abstract "<p>Ultrasonic measurements at high magnetic field and low temperature necessitate ultra-fast excitations, ultra-high dynamic range of duty-cycle adjustments, as well as real-time, precise and automatic analysis. This paper proposes a dual-mode ultrasonic measurement system, which means the capability of carrying out acoustic measurements in both pulsed and static high magnetic field with low temperature. Based on the “counter-delay-chain” series structure and adaptive jitter compensation in the field-programmable-gate-array(FPGA), the timing control accuracy of 5 nanoseconds and the timing jitter below 160 picoseconds are realized for high-resolution excitation generation and precise sampling window adjustment. The duty cycle adjustment achieves a high dynamic range from 0.23 ppb to 10 % to realize both pulsed field mode and static field mode (denoted as PF-mode and SF-mode) ultrasonic measurements. The independent sampling window adjustment reduces the data size by more than 80%, extends the maximum testing duration and reduces the analysis consuming. Combined with the automatic cross-correlation analysis method, this system can automatically carry out PF-mode tests with a repetition rate above 100 kHz and SF-mode tests for hours with sound velocity accuracy of 2%. Experiments have proved the reliability and feasibility of the system and revealed its application prospect in condensed matter physics experiments. </p>" @default.
- W4362693586 created "2023-04-09" @default.
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- W4362693586 date "2023-04-07" @default.
- W4362693586 modified "2023-10-01" @default.
- W4362693586 title "An Integrated Dual-mode Pulse-echo Ultrasonic Measurement System Under Pulsed/Static Magnetic Field" @default.
- W4362693586 doi "https://doi.org/10.36227/techrxiv.22493386.v1" @default.
- W4362693586 hasPublicationYear "2023" @default.
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