Consulting SERVICE & CUSTOM DEVELOPMENT
You don't find a solution that fits your need? We can make it.
Here are some examples of custom developments we made.
Very High Power Voltage-Current Probe (2, 27.12 and 40.68MHz)
The Institute of Plasma Physics (ASIPP) in China contacted us to help them reduce the reflected power at the input of a very high power (50kW) impedance matching network (at 2, 27.12 and 40.68MHz) used to power two heating antennas of the EAST tokamak.
We designed and built a custom voltage-current probe to be installed into a 3-1/8" EIA rigid coaxial line at the matching network output. The maximum voltage and current amplitudes to be measured at 27.12 and 40.68MHz are 10kV RMS and 100A RMS.
A 3D drawing of the designed probe is shown on the left. After validation by the customer we have built, calibrated and shipped the probe.
A photography of the probe integrated in the customer's system is shown below.
In addition to the design and manufacturing of the probe we provided 10 days of consulting service to help the customer interpret the RF measurements and optimize its matching network.
The customer was able to measure the load impedance and modify the design of the matching network to achieve a good impedance matching.
Source: Yang et al. IEEE Transactions on Plasma Science (Volume: 50, Issue: 4, April 2022) https://doi.org/10.1109/TPS.2022.3154397
Atmospheric Pressure 13.56MHz Micro-plasma Jet Generation System
A researcher in Chile contacted us because he wanted to process agricultural seeds with an atmospheric micro-plasma jet excited at 13.56MHz. The goal is to increase the germination rate as reported in some recent scientific articles.
A micro-plasma jet is a radio-frequency capacitively coupled plasma (CCP) generated in a gas flow chanelled between two linear electrodes.
That researcher had a limited budget. Despite that constraint we were able to design and manufacture a full generation system integrated into a small 19-inch rack frame. This turn-key system consists of:
- RF signal generator (adjustable excitation frequency);
- solid-state RF switch (to pulse/modulate the power up to 1kHz);
- RF power amplifier (30W);
- wattmeter (to measure the power delivered by the amplifier);
- manual impedance matching network;
- 50 Ohms dummy load (for testing purpose);
- coaxial cable terminated by the micro-plasma source.
We designed the system to be modular and easily repairable by the customer due to the remoteness of Chile.
The micro-plasma jet shown on the right was generated within a Neon gas flow at 25W.
