Tof-detector assembled on a Printed Circuit Board with MCP 25-10A

The detector with a voltage divider on the printed circuit board is designed for the detection of charged particle fluxes as part of a mass spectrometer.

The board on which the MCP detector is mounted consists of a detector voltage divider, components of the power supply circuit and a coaxial connector for the signal readout. The assembly of the detector on the board allows to reduce the influence of spurious inductances, and as a result, the output pulse of the MCP detector acquires a classical waveform without “ripple” with improved timing characteristics. The compact design with 2 pins for the power supply and a coaxial connector for the signal acquisition is more appropriate to the application and provides easy installation and replacement of the detector when needed.


Basic parameters
Parameter, unit Value
min max
MCP active area diameter, mm 25  
Supply voltage at 1×107 gain, V     2400
Single electron pulse height resolution, %   135
Dark count rate density, count/sec×cm2   3
Average pulse width (FWHM), ns   1.6
Pulse leading edge rise time, ns   0.75
Product consumption current at supply voltage, μA       250
Typical output waveform
The detector electrical connection diagram

R1 = 10 MΩ;
R2 = R3 = 1 MΩ;
С1 = С2 = 470 pF;
Usupply = -2.4 kV, max

1 – control electrode;
2 – MCP unit;
3 – anode

General view, overall, setting and mounting dimensions of MCP detector with 25 mm active area diameter
Lead designation
1Supply voltage –2400 V, max
2. 3Package
SMASignal output