Help for optimization of Voltage/Current measurement for a High-Voltage Generator

Hello everyone,

I would like to get external feedback on my work to ensure that my measurement setup is well-optimized. I am developing a high-voltage generator for cold plasma research, with a maximum voltage dimensioned at 30 kV, though the actual operating values will be lower. The system will not exceed 50 W of power, and the signal frequency will range between 10 and 30 kHz. To monitor the electrical parameters, I use a high-voltage probe with a 50 MHz bandwidth to step down the voltage to ±40V, followed by a resistive divider that further reduces it to ±4V before conversion by the EVAL-AD7606C16FMCZ ADC. For current measurement, I employ a shunt resistor in combination with the same ADC, expecting a maximum current of 20 mA. The ADC data is then transmitted via SPI to a Seeed Xiao RP2040 for further processing.

I am looking for advice on a few key points. First, I would like to confirm whether my setup is well-suited for accurately capturing voltage and current variations at frequencies between 10 and 30 kHz, and whether the AD7606C16 is appropriate for this application. Additionally, I am considering the best choice of shunt resistor to minimize voltage drop while ensuring precise current measurement. Finally, given the high-frequency and high-voltage nature of the system, I would appreciate recommendations on how to minimize noise in the measurements, whether through filtering, shielding, or isolation techniques.

Thank you in advance for your insights and suggestions!