Details

Autor(en) / Beteiligte

• Reusch, Tobias
• Osterhoff, Markus
• Agricola, Johannes
• Salditt, Tim

Titel

Pulse-resolved multi-photon X-ray detection at 31 MHz based on a quadrant avalanche photodiode

Ist Teil von

• Journal of synchrotron radiation, 2014-07, Vol.21 (4), p.708-715

Ort / Verlag

5 Abbey Square, Chester, Cheshire CH1 2HU, England: International Union of Crystallography

Erscheinungsjahr

2014

Quelle

Wiley-Blackwell Full Collection

Beschreibungen/Notizen

• The technical realisation and the commissioning experiments of a high‐speed X‐ray detector based on a quadrant avalanche silicon photodiode and high‐speed digitizers are described. The development is driven by the need for X‐ray detectors dedicated to time‐resolved diffraction and imaging experiments, ideally requiring pulse‐resolved data processing at the synchrotron bunch repetition rate. By a novel multi‐photon detection scheme, the exact number of X‐ray photons within each X‐ray pulse can be recorded. Commissioning experiments at beamlines P08 and P10 of the storage ring PETRA III, at DESY, Hamburg, Germany, have been used to validate the pulse‐wise multi‐photon counting scheme at bunch frequencies ≥31 MHz, enabling pulse‐by‐pulse readout during the PETRA III 240‐bunch mode with single‐photon detection capability. An X‐ray flux of ≥3.7 × 109 photons s−1 can be detected while still resolving individual photons at low count rates.