A multi-stage image charge detector made from printed circuit boards.

Area of Science:

• Physics
• Electrical Engineering
• Materials Science

Background:

• Conventional charged particle detectors often use complex, machined metal tubing.
• Assembly, alignment, and wiring of traditional detectors can be labor-intensive and challenging.
• Existing methods may limit the ease of integration and scalability for particle detection systems.

Purpose of the Study:

• To introduce a novel image-charge detector fabricated using printed circuit boards (PCBs).
• To demonstrate the simplicity, assembly, and performance of PCB-based detectors compared to conventional designs.
• To evaluate the impact of multi-stage detectors on detection limits and particle analysis.

Main Methods:

• Patterning detection elements directly onto printed circuit boards.
• Utilizing electrospray-charged, micrometer-size polystyrene spheres for performance testing.
• Measuring both velocity and charge of individual particles using single-stage and 5-stage detectors.
• Comparing the performance of the PCB detector against a conventional tubular charge detector.

Main Results:

• The PCB-based image-charge detector is simpler to assemble, align, and wire than traditional detectors.
• No loss in sensitivity was observed with the PCB detector compared to conventional designs.
• Multi-stage PCB detectors enhance detection limits through an ensemble averaging effect.
• Performance of the PCB detector was found to be statistically equivalent to conventional tubular detectors.

Conclusions:

• Printed circuit boards offer a viable and simpler alternative for fabricating charged particle detectors.
• This technique facilitates easier construction, alignment, and electrical connection of detector components.
• PCB-based detectors provide equivalent performance to traditional methods, enabling efficient particle analysis and manipulation.