The FMB Oxford APD detector is an ultra-fast detector system using an avalanche photodiode, for X-ray scattering experiments up to 20keV.
It offers the ultimate in speed, resolution, efficiency and noise levels whilst maintaining a robust and easy to use architecture; making it ideal for experiments with a large dynamic range, time resolved measurements and fast photon counting.
The system requires an APD detector head, signal processing electronics and a signal cable. This section details the APD detector head and the two processing modules offered by FMB Oxford.
The FMB Oxford APD Detector Head comes in three standard formats, 5×5 rectangular body, 5×5 cylindrical body and a 10×10 transmissive version all with integrated preamplifier, in the housing.
[/vc_column_text]APD0010 | APD0011 | |
---|---|---|
![]() | ![]() |
|
5mm x 5mm | 5mm x 5mm | |
110μm | 110μm | |
60mm x 30mm x 16mm body - in-air | 60mm x 30mm x 16mm body - DN25KF vacuum compatible head | |
Be window | Be window |
Maximum count rate | 100MHz * |
Diode area | 5mm x 5mm |
Window | 70μm Kapton |
Housing dimensions | 26mm x 20.85mm x 55mm (L) |
Photon efficiency | 50% that of NaI up to 10keV * |
Noise | below 1Hz * |
Diode gain | 200x at 370V bias |
Preamplifier gain | 60dB per stage at 100MHz |
Rise time 10%-90% | <2ns * |
FWHM | <4ns * |
*indicative performance figures obtained at the National Synchrotron Light Source, Brookhaven National Laboratory |