Spatial resolution studies for the PERCIVAL sensor

Viti, M; Bayer, M.; Correa, J.; Göttlicher, P.; Lange, S.; Marras, A.; Shevyakov, I.; Smoljanin, S.; Tennert, M.; Wunderer, C. B.; Xia, Q.; Zimmer, M.; Das, D.; Guerrini, N.; Marsh, B.; Sedgwick, I.; Turchetta, R.; Cautero, Giuseppe; Gianoncelli, A.; Giuressi, Dario; Menk, Ralf Hendrik; Stebel, L.; Yousef, H.; Marchal, J.; Rees, N.; Tartoni, N.; Graafsma, H.

doi:10.1088/1748-0221/10/01/C01044

The PERCIVAL ("Pixelated Energy Resolving CMOS Imager, Versatile and Large") is a collaboration of DESY, RAL/STFC, ELETTRA, and DLS to develop a monolithic active pixel sensor (MAPS) to provide a suitable detector for photon science for the photon energy regime between 250 eV and 1 keV. An important performance parameter is the spatial resolution which can be inferred from the Modulation Transfer Function (MTF). The MTF measures in optical systems the relative contrast of a pattern in function of the spatial frequency. With a back-thinned and back-illuminated PERCIVAL prototype chip, dedicated MTF evaluation data were taken at Elettra's TwinMic Beamline in March 2014 at a photon energy of 535 eV. We will present our MTF derivation approaches together with MTF results for 3 pixel types of the irradiated test sensor

Spatial resolution studies for the PERCIVAL sensor / Viti, M., Bayer, M., Correa, J., Göttlicher, P., Lange, S., Marras, A., Shevyakov, I., Smoljanin, S., Tennert, M., Wunderer, C.B., Xia, Q., Zimmer, M., Das, D., Guerrini, N., Marsh, B., Sedgwick, I., Turchetta, R., Cautero, G., Gianoncelli, A., Giuressi, D., et al.. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - ELETTRONICO. - 10:1(2015), pp. C01044.--C01044.-. [10.1088/1748-0221/10/01/C01044]