Overview of Microchannel Plate Detector
For the detection of light modulated above 500 MHz, a Microchannel Plate Detector (MCP) photomultiplier tube is required. The ISS MCP housing is designed for easy installation on ISS fluorometers. The optical axis is 63.4 mm, and an M28-threaded adapter couples the MCP to the instrument. The compact housing contains the entire electronics for processing of frequency-domain signal, including the high voltage power supply, the power amplifier and the mixer. A -12 Volt input signal is required for operation. The housing is built for the Hamamatsu R2566U MCP although other MCPs are easily accommodated.
Product Specifications for Microchannel Plate Detector
MCP Model
- R7024U by Hamamatsu
MCP Construction
- 2 Stage MCP
Photocathode Diameter
- 10 mm
Photocathode Type
- Multialkali
Spectral Response
- 160–850 nm
Peak Wavelength at Maximum Response
- 430 nm
Photocathode Luminous Sensitivity (typical)
- 150 μA/lm
Photocathode Radiant Sensitivity at 400 nm (typical)
- 50 mA/W
Current Amplifications at -4500 V (typical)
- 2.0 x 105
Anode Dark Counts at -4500 V
- 200 cps
Average Anode Current
- 100 nA
Pulsed Peak Current
- 350 mA
Frequency Response (-3 dB)
- 3 GHz
Maximum Supply Voltage
- -5000 V
Working Temperature
- from -50 to +50°C
Supply Voltage
- from 0 to -5000 V
Blas-T Frequency Response (-3 dB)
- up to 12 GHz
Amplifier Frequency Response (-3 dB)
- from 0.01 to 10.0 GHz
Minimum Gain of RF Amplifier
- 38 dB
Maximum Gain Flatness
- ±1.5 dB
Mixer Frequency Response (-3 dB)
- up to 4 GHz
