DAQ for electrostatic probes

PF-DAQ6P20i

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Description

Data Acquisition system for electrostatic probes designed for plasma diagnostics in nuclear fusion and advanced research environments, developed for RFX in Padua.

Each crate manages up to 16 probes, with simultaneous voltage and current acquisition for a total of 32 synchronized channels. 16-bit ADCs provide sampling rates up to 20 MS/s per channel, enabling high-speed analysis of dynamic plasma phenomena.

The system integrates a programmable bias power supply for I-V measurements and automatic characteristic sweeps, with dynamic probe reconfiguration. An architecture featuring per-channel galvanic isolation, dedicated protections, and FPGA real-time control with PTP time synchronization ensures precise timing, safe operation, and seamless integration into experimental infrastructures.

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Applications

Langmuir and electrostatic probe diagnostics
Floating Potential and Ion Saturation measurements
Single Probe and Double Probe configurations
Plasma I-V characteristic analysis with automated sweeps
Tokamak, stellarator, and plasma test facilities
High-speed monitoring of transient plasma events
Integration into synchronized control systems via PTP

Technical specifications

Parameter	Value
Number of probes	16 per crate
Acquired channels	32 synchronized channels (V + I)
ADC resolution	16-bit
Sampling rate	Up to 20 MS/s per channel
Measurement modes	Floating Potential, Ion Saturation, Single/Double Probe, I-V sweep
Bias supply	Integrated programmable, dynamic reconfiguration
Isolation	Per-channel galvanic isolation with protections