RFSoC-based front-end electronics for pulse detection

Radiation measurement relies on pulse detection, which can be performed using various configurations of high-speed analog-to-digital converters (ADCs) and field-programmable gate arrays (FPGAs). For optimal power consumption, design simplicity, system flexibility, and the availability of DSP slices,...

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Bibliographic Details
Published in:Journal of instrumentation 2024-03, Vol.19 (3), p.P03013
Main Authors: Axani, S.N., Futagi, S., Garcia, M., Grant, C., Hosokawa, K., Ieki, S., Inoue, K., Ishidoshiro, K., Kawada, N., Matsumoto, Y., Nakahata, T., Nakamura, K., Shouji, R., Song, H., Winslow, L.A.
Format: Article
Language:English
Subjects:
Configuration management
Crosstalk
Data acquisition circuits
Data transfer (computers)
Digital signal processing
Digital signal processing (DSP)
Electronics
Frequency response
Front-end electronics for detector readout
Neutrinos
Noise levels
Photomultiplier tubes
Power consumption
Radiation measurement
Scintillation counters
System on chip
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Summary:Radiation measurement relies on pulse detection, which can be performed using various configurations of high-speed analog-to-digital converters (ADCs) and field-programmable gate arrays (FPGAs). For optimal power consumption, design simplicity, system flexibility, and the availability of DSP slices, we consider the Radio Frequency System-on-Chip (RFSoC) to be a more suitable option than traditional setups. To this end, we have developed custom RFSoC-based electronics and verified its feasibility. The ADCs on RFSoC exhibit a flat frequency response of 1–125 MHz. The root-mean-square (RMS) noise level is 2.1 ADC without any digital signal processing. The digital signal processing improves the RMS noise level to 0.8 ADC (input equivalent 40 μV rms ). Baseline correction via digital signal processing can effectively prevent photomultiplier overshoot after a large pulse. Crosstalk between all channels is less than -55 dB. The measured data transfer speed can support up to 32 kHz trigger rates (corresponding to 750 Mbps). Overall, our RFSoC-based electronics are highly suitable for pulse detection, and after some modifications, they will be employed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND).
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/19/03/P03013