Bunch mode specific rate corrections for PILATUS3 detectors
| Autor: | B. A. Sobott, Donald A. Walko, D.J. Peake, Ch. Broennimann, C. Dejoie, M. Kobas, P. Pattison, V. Radicci, P. Trueb |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Nuclear and High Energy Physics
Photon count rate correction 030303 biophysics Monte Carlo method 010403 inorganic & nuclear chemistry 01 natural sciences law.invention 03 medical and health sciences Optics Data acquisition law Range (statistics) PILATUS detectors Photon counting Count rate correction Monte Carlo simulation Instrumentation photon counting Physics 0303 health sciences Radiation Pixel business.industry Detector Research Papers Synchrotron 0104 chemical sciences Physics::Accelerator Physics business |
| Zdroj: | 'Journal of Synchrotron Radiation ', vol: 22, pages: 701-707 (2015) Journal of Synchrotron Radiation Journal of Synchrotron Radiation, 22 (3) |
| ISSN: | 0909-0495 1600-5775 |
| Popis: | PILATUS X-ray detectors are in operation at many synchrotron beamlines around the world. This article reports on the characterization of the new PILATUS3 detector generation at high count rates. As for all counting detectors, the measured intensities have to be corrected for the dead-time of the counting mechanism at high photon fluxes. The large number of different bunch modes at these synchrotrons as well as the wide range of detector settings presents a challenge for providing accurate corrections. To avoid the intricate measurement of the count rate behaviour for every bunch mode, a Monte Carlo simulation of the counting mechanism has been implemented, which is able to predict the corrections for arbitrary bunch modes and a wide range of detector settings. This article compares the simulated results with experimental data acquired at different synchrotrons. It is found that the usage of bunch mode specific corrections based on this simulation improves the accuracy of the measured intensities by up to 40% for high photon rates and highly structured bunch modes. For less structured bunch modes, the instant retrigger technology of PILATUS3 detectors substantially reduces the dependency of the rate correction on the bunch mode. The acquired data also demonstrate that the instant retrigger technology allows for data acquisition up to 15 million photons per second per pixel. Journal of Synchrotron Radiation, 22 (3) ISSN:0909-0495 ISSN:1600-5775 |
| Databáze: | OpenAIRE |
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