EM – Cheetah

Cheetah 1800 installation.
ASI’s Cheetah is a hybrid pixel detector suitable for electron microscope applications. The sensitivity and speed of Cheetah offers unprecedented possibilities for electron diffraction, imaging and tomography. Scintillated detectors do not have the signal to noise ratio’s that can be obtained with the Cheetah. Other direct electron cameras lack the dynamic range the Cheetah has and are too beam sensitive to be used for diffraction experiments. The Cheetah’s high speed makes it ideal for looking at dynamic processes and catching fast fading signals.

Benefits of our detector

Asi offers three different versions which mainly differ in size and speed. The table right shows the comparisons between the three options. All cameras have the following properties:

•Single electron sensitivity
•Zero readout noise, high Signal to Noise
•High dynamic range
•Background noise suppression through thresholding
•Short readout times and high framerates
•Increased high energy performance with high-Z sensor material

Cheetah with Timepix and Medipix3 specificationsTable 1. Main specifications for Electron Microscope


Our versatile detector can be used for many different applications within the field of Electron microscopy:
•Pharmaceutical Crystallography

Protein Crystallography
•Catalysis (Zeolites and MOFs)
•Scanning Transmission Electron Microscope
•Electron Backscatter Diffraction
•Low Energy Electron Microscopy
•In-situ Electron Imaging