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Lambda comes in different flavours.

The silicon LAMBDA system is specifically designed for synchrotron experiments requiring high spatial resolution, high sensitivity and extremely high speed. This makes it well-suited to applications such as XPCS, time-resolved measurements, ptychography, SAXS, Diamond anvil cells and imaging. LAMBDA is based on the Medipix3 readout chip, developed at CERN. By using single-photon-counting circuitry, this provides effectively noise-free operation, which is particularly critical for achieving a high image quality during fast measurements and discriminating against fluorescence. This photon-counting feature is combined with a small pixel size (55 µm) for high-resolution imaging, and flexible in-pixel circuitry.

Lambda Productfamily

Different operation modes

The LAMBDA system can be operated in a variety of modes:

  • High-speed readout mode at up to 2000 frames per second, with no dead time between images
  • 24-bit counter depth mode, with 1 ms readout time between images
  • Energy binning mode; photon hits are divided into two user-defined energy bins

This can be used, for example, to discriminate between the first beam harmonic and higher harmonics. The LAMBDA readout electronics, developed at DESY, make it possible to read out a large 750K module at 2000 frames per second rate using high-speed optical links.

60k250k350k750k2M
pixel256*256512*512512*768512*15361536*1536
sensor size14*14mm228*28mm228*42mm228*84mm284*84mm2
speed @12 bit2.000fps2.000fps2.000fps2.000fps2.000fps
speed@6bit4.000 fps4.000 fps4.000 fps4.000 fps4.000 fps
speed@1bit24.000 fps24.000 fps24.000 fps24.000 fps24.000 fps

All Lambda cameras share the following common features:

  • max. countrate: 2.5*108 counts/mm2/s
  • Software interface: open-source hardware library available

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