MIGHTION® F14845-11: high-speed hybrid detection for ToF mass spectrometry

In time-of-flight mass spectrometry (ToF MS), detector performance directly affects how clearly ions can be resolved, identified, and measured. Conventional microchannel plate (MCP) assemblies often use two MCPs in a chevron configuration to achieve high gain, but this architecture can become more susceptible to saturation, increase capacitance, and accelerated wear under charge loading increase. Hamamatsu Photonics’ MIGHTION F14845-11 addresses these challenges with a hybrid architecture that combines one MCP with an avalanche diode (AD).

A hybrid architecture built for demanding measurements

The MCP converts incoming ions into electrons and provides initial multiplication. The AD then supplies second-stage gain and high-speed readout, replacing the second MCP and conventional metal anode. This configuration provides a minimum gain of 1 × 10⁶ while reducing the charge burden on the MCP. An electron lens focuses the amplified electrons onto the compact AD, helping lower capacitance and support fast, stable signal capture.

Read the article for more details on MIGHTION’s role in mass spectrometry.

F14845-11 product highlights

• Fast response: typical pulse width of 550 ps FWHM for precise ToF timing.
• High gain: minimum gain of 1 × 10⁶ for sensitive ion detection.
• Useful detection area: Ø25 mm effective area with a single-anode readout.
• Hybrid MCP–AD design: combines one MCP with an avalanche diode to support broad dynamic range and extended lifetime.
• Operating flexibility: specified for 0 °C to 50 °C operation, with a maximum MCP supply voltage of 1.0 kV.