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Characterisation of a PERCIVAL monolithic active pixel prototype using synchrotron radiation

J. Correa, M. Bayer, P. Göttlicher, S. Lange, A. Marras, M. Niemann, S. Reza, I. Shevyakov, S. Smoljanin, M. Tennert, Q. Xia, M. Viti (+25 others)
2016 Journal of Instrumentation  

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A : PERCIVAL ("Pixelated Energy Resolving CMOS Imager, Versatile And Large") is a monolithic active pixel sensor (MAPS) based on CMOS technology. Is being developed by DESY, RAL/STFC, Elettra, DLS, and PAL to address the various requirements of detectors at synchrotron radiation sources and Free Electron Lasers (FELs) in the soft X-ray regime. These requirements include high frame rates and FELs base-rate compatibility, large dynamic range, single-photon counting capability with low probability
more » ... of false positives, high quantum efficiency (QE), and (multi-)megapixel arrangements with good spatial resolution. Small-scale back-sideilluminated (BSI) prototype systems are undergoing detailed testing with X-rays and optical photons, in preparation of submission of a larger sensor. A first BSI processed prototype was tested in 2014 and a preliminary result -first detection of 350eV photons with some pixel types of PERCIVAL -reported at this meeting a year ago. Subsequent more detailed analysis revealed a very low QE and pointed to contamination as a possible cause. In the past year, BSI-processed chips on two more wafers were tested and their 1Corresponding author. c 2016 IOP Publishing Ltd and Sissa Medialab srl doi:xxxxxxx proofs JINST_063P_0915 response to soft X-ray evaluated. We report here the improved charge collection efficiency (CCE) of different PERCIVAL pixel types for 400eV soft X-rays together with Airy patterns, response to a flat field, and noise performance for such a newly BSI-processed prototype sensor.
doi:10.1088/1748-0221/11/02/c02090 fatcat:libca65rqnfd3b2inz3bcyetwq
Citation

J. Correa, M. Bayer, P. Göttlicher, S. Lange, A. Marras, M. Niemann, S. Reza, I. Shevyakov, S. Smoljanin, M. Tennert, Q. Xia, M. Viti, C.B. Wunderer, M. Zimmer, D. Dipayan, N. Guerrini, B. Marsh, I. Sedgwick, R. Turchetta, G. Cautero, D. Giuressi, A. Khromova, G. Pinaroli, R. Menk, L. Stebel, R. Fan, J. Marchal, U. Pedersen, N. Rees, P. Steadman, M. Sussmuth, N. Tartoni, H. Yousef, H.J. Hyun, K. Kim, S. Rah, H. Graafsma. "Characterisation of a PERCIVAL monolithic active pixel prototype using synchrotron radiation." Journal of Instrumentation 11.02 (2016) C02090-C02090