A capacitively coupled segmented polyimide core anode for a microchannel plate timing detector.

Area of Science:

• Physics
• Materials Science
• Electrical Engineering

Background:

• Microchannel plate (MCP) detectors are crucial for applications requiring high sensitivity and fast timing.
• Traditional MCP signal readout methods can suffer from latency and noise, limiting performance.
• Ultrahigh vacuum compatibility is essential for most MCP detector applications.

Purpose of the Study:

• To introduce a novel readout method for MCP signals utilizing flexible polyimide timing anodes.
• To demonstrate the compatibility of this method with ultrahigh vacuum environments.
• To achieve enhanced timing resolution and reduced noise in MCP detectors.

Main Methods:

• Fabrication of timing anodes from flexible polyimide laminates using printed circuit board techniques.
• Integration of embedded capacitors and decoupling circuits for improved signal integrity.
• Characterization of MCP detector performance using an optical detector characterization method.

Main Results:

• The novel polyimide anodes are compatible with ultrahigh vacuum conditions.
• The readout method enables precise impedance matching to 50 Ω coaxial transmission lines.
• MCP signals exhibit a Gaussian profile with <1.5 ns FWHM.
• A timing resolution of 40 ps root-mean-square was achieved for 50 mm MCPs.

Conclusions:

• Flexible polyimide timing anodes provide a viable and effective readout method for MCP detectors.
• The integrated design reduces latency and noise, surpassing traditional methods.
• This advancement offers significant potential for high-performance MCP detector systems.