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AGIPD: A multi megapixel, multi megahertz X-ray camera for the European XFEL
Deutsches Elektronen-Synchrotron, Germany.
Deutsches Elektronen-Synchrotron, Germany.
Deutsches Elektronen-Synchrotron, Germany.
Deutsches Elektronen-Synchrotron, Germany.
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2017 (English)In: Proceedings of SPIE - The International Society for Optical Engineering: SELECTED PAPERS FROM THE 31ST INTERNATIONAL CONGRESS ON HIGH-SPEED IMAGING AND PHOTONICS / [ed] Shiraga, H; Etoh, TG, SPIE - International Society for Optical Engineering, 2017, Vol. 10328, UNSP 1032805Conference paper, Published paper (Refereed)
Abstract [en]

AGIPD is a hybrid pixel detector developed by DESY, PSI, and the Universities of Bonn and Hamburg. It is targeted for use at the European XFEL, a source with unique properties: a train of up to 2700 pulses is repeated at 10 Hz rate. The pulses inside a train are ≤100fs long and separated by 220 ns, containing up to 1012 photons of 12.4 keV each. The readout ASICs with 64 x 64 pixels each have to cope with these properties: Single photon sensitivity and a dynamic range up to 104 photons/pixel in the same image as well as storage for as many as possible images of a pulse train for delayed readout, prior to the next train. The high impinging photon flux also requires a very radiation hard design of sensor and ASIC, which uses 130 nm CMOS technology and radiation tolerant techniques. The signal path inside a pixel of the ASIC consists of a charge sensitive preamplifier with 3 individual gains, adaptively selected by a subsequent discriminator. The preamp also feeds to a correlated double sampling stage, which writes to an analogue memory to record 352 frames. It is random-access, so it can be used most efficiently by overwriting bad or empty images. Encoded gain information is stored to a similar memory. Readout of these memories is via a common charge sensitive amplifier in each pixel, and multiplexers on four differential ports. Operation of the ASIC is controlled via a command interface, using 3 LVDS lines. It also serves to configure the chip's operational parameters and timings.

Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2017. Vol. 10328, UNSP 1032805
Series
Proceedings of SPIE, ISSN 0277-786X
Keyword [en]
AGIPD, Free Electron Laser, Hybrid Pixel Detector, Photon Science
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-30665DOI: 10.1117/12.2269153ISI: 000399339900004Scopus ID: 2-s2.0-85016405787Local ID: STCISBN: 9781510611009 (print)OAI: oai:DiVA.org:miun-30665DiVA: diva2:1091403
Conference
31st International Congress on High-Speed Imaging and Photonics, 6 November 2016 through 10 November 2016, Osaka; Japan
Available from: 2017-04-26 Created: 2017-04-26 Last updated: 2017-09-04Bibliographically approved

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