Characterisation of the high dynamic range Large Pixel Detector (LPD) and its use at X-ray free electron laser sources

Journal Article · Sun Dec 03 23:00:00 EST 2017 · Journal of Instrumentation

DOI: https://doi.org/10.1088/1748-0221/12/12/P12003 · OSTI ID:1418008

Veale, M. C. ^[1]; Adkin, P. ^[1]; Booker, P. ^[1]; Coughlan, J. ^[1]; French, M. J. ^[1]; Hart, M. ^[1]; Nicholls, T. ^[1]; Schneider, A. ^[1]; Seller, P. ^[1]; Pape, I. ^[2]; Sawhney, K. ^[2]; Carini, G. A. ^[3]; Hart, P. A. ^[3]

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1. Rutherford Appleton Lab., Didcot (United Kingdom)
2. Diamond Light Source, Didcot (United Kingdom)
3. SLAC National Accelerator Lab., Menlo Park, CA (United States)

The STFC Rutherford Appleton Laboratory have delivered the Large Pixel Detector (LPD) for MHz frame rate imaging at the European XFEL. The detector system has an active area of 0.5 m × 0.5 m and consists of a million pixels on a 500 μm pitch. Sensors have been produced from 500 μm thick Hammamatsu silicon tiles that have been bump bonded to the readout ASIC using a silver epoxy and gold stud technique. Each pixel of the detector system is capable of measuring 10⁵ 12 keV photons per image readout at 4.5 MHz. In this paper results from the testing of these detectors at the Diamond Light Source and the Linac Coherent Light Source (LCLS) are presented. As a result, the performance of the detector in terms of linearity, spatial uniformity and the performance of the different ASIC gain stages is characterised.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1418008
• Journal Information: Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 12 Vol. 12; ISSN 1748-0221
• Publisher: Institute of Physics (IOP)Copyright Statement
• Country of Publication: United States
• Language: English