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Proceedings Paper

AGIPD: a multi megapixel, multi megahertz X-ray camera for the European XFEL
Author(s): Ulrich Trunk; A. Allahgholi; J. Becker; A. Delfs; R. Dinapoli; P. Göttlicher; H. Graafsma; D. Greiffenberg; H. Hirsemann; S. Jack; A. Klyuev; H. Krueger; S. Lange; T. Laurus; A. Marras; D. Mezza; A. Mozzanica; J. Poehlsen; S. Rah; B. Schmitt; J. Schwandt; I. Sheviakov; X. Shi; Q. Xia; J. Zhang; M. Zimmer
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Paper Abstract

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.

Paper Details

Date Published: 20 February 2017
PDF: 6 pages
Proc. SPIE 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics, 1032805 (20 February 2017); doi: 10.1117/12.2269153
Show Author Affiliations
Ulrich Trunk, Deutsches Elektronen-Synchrotron (Germany)
A. Allahgholi, Deutsches Elektronen-Synchrotron (Germany)
J. Becker, Deutsches Elektronen-Synchrotron (Germany)
A. Delfs, Deutsches Elektronen-Synchrotron (Germany)
R. Dinapoli, Paul Scherrer Institut (Switzerland)
P. Göttlicher, Deutsches Elektronen-Synchrotron (Germany)
H. Graafsma, Deutsches Elektronen-Synchrotron (Germany)
Mid Sweden Univ. (Sweden)
D. Greiffenberg, Paul Scherrer Institut (Switzerland)
H. Hirsemann, Deutsches Elektronen-Synchrotron (Germany)
S. Jack, Deutsches Elektronen-Synchrotron (Germany)
A. Klyuev, Deutsches Elektronen-Synchrotron (Germany)
H. Krueger, Univ. Bonn (Germany)
S. Lange, Deutsches Elektronen-Synchrotron (Germany)
T. Laurus, Deutsches Elektronen-Synchrotron (Germany)
A. Marras, Deutsches Elektronen-Synchrotron (Germany)
D. Mezza, Paul Scherrer Institut (Switzerland)
A. Mozzanica, Paul Scherrer Institut (Switzerland)
J. Poehlsen, Deutsches Elektronen-Synchrotron (Germany)
S. Rah, Pohang Accelerator Lab. (Korea, Republic of)
B. Schmitt, Paul Scherrer Institut (Switzerland)
J. Schwandt, Univ. Hamburg (Germany)
I. Sheviakov, Deutsches Elektronen-Synchrotron (Germany)
X. Shi, Paul Scherrer Institut (Switzerland)
Q. Xia, Deutsches Elektronen-Synchrotron (Germany)
J. Zhang, Paul Scherrer Institut (Switzerland)
M. Zimmer, Deutsches Elektronen-Synchrotron (Germany)


Published in SPIE Proceedings Vol. 10328:
Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics
T. Goji Etoh; Hiroyuki Shiraga, Editor(s)

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