The PERCIVAL soft X-ray imager

Wunderer, C.; Marras, A.; Bayer, M.; Glaser, Leif; Göttlicher, P.; Lange, S.; Pithan, Florian; Scholz, Frank; Seltmann, Jörn; Shevyakov, I.; Smoljanin, S.; Viefhaus, Jens; Viti, M.; Xia, Q.; Zimmer, M.; Klumpp, S.; Gasiorek, P.; Guerrini, N.; Marsh, B.; Sedgwick, I.; Turchetta, R.; Cautero, G.; Farina, Serena; Giuressi, D.; Menk, R.H.; Stebel, L.; Yousef, Hazem; Marchal, J.; Nicholls, T.; Tartoni, N.; Graafsma, H.

doi:10.1088/1748-0221/9/03/c03056

Cited by 32 publications

(32 citation statements)

References 5 publications

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“…However, PERCIVAL is expected to be usable under high fluxes down to 100 eV and lower, in order to fully cover the FLASH operational energies. 2 At these relatively low energies, the attenuation lengths for both Si and SiO 2 are on the order of 100 nm, as shown in figure 1. The uppermost layer of a CMOS sensor, containing SiO 2 and the metal lines of the circuitry, is in general several µm thick.…”

Section: The Conceptmentioning

confidence: 90%

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Characterisation of a PERCIVAL monolithic active pixel prototype using synchrotron radiation

et al. 2016

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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 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 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.

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Section: The Conceptmentioning

confidence: 90%

“…Images of these Airy patterns were measured with the old chip in the TwinMic beamline at Elettra Light source, as explained in [2] and [8]. A clear difference between the response from the different pixel types was visible.…”

Section: Sensitivitymentioning

confidence: 99%

Characterisation of a PERCIVAL monolithic active pixel prototype using synchrotron radiation

et al. 2016

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“…PERCIVAL [60][61][62][63][64], a large-area CMOS sensor for low-energy x-rays, has a seven-row readout architecture. PERCIVAL [60][61][62][63][64], a large-area CMOS sensor for low-energy x-rays, has a seven-row readout architecture.…”

Section: Row Addressingmentioning

confidence: 99%

Technology Needs for Modular Pixel Detectors

Guerrini¹

2017

Analog Electronics for Radiation Detection

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“…The Pixellated Energy Resolving CMOS Imager, Versatile and Large (Percival) [11] is a monolithic pixel sensor. The design is based on a quadruple well 180 nm CMOS process, providing a 12 µm thick high resistivity epitaxial layer, which represents the sensitive volume of the detector.…”

Section: The Percival Projectmentioning

confidence: 99%

New detectors for light sources

Ratti¹

2017

Proceedings of INFN Workshop on Future Detectors — PoS(IFD2015)

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In the next few years, X-ray free electron laser (FEL) facilities are expected to proliferate all around the world. These 4 th generation light sources, based on linear accelerator technology, can provide coherent X-ray beams, femtosecond pulses and a brilliance ten orders of magnitude larger than storage ring based sources. New detectors will be needed to to take advantage of their features and let them fully deploy their probing power. This paper shall review the state of the art in the field of 2D X-ray imaging instrumentation, focusing on a selection of the large set of detector technologies and architectural solutions proposed for experiments at FELs. This will include some recent outcomes from the PixFEL project, an R&D INFN-funded program aiming at the development of advanced X-ray imagers for applications at FEL sources.

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The PERCIVAL soft X-ray imager

Cited by 32 publications

References 5 publications

Characterisation of a PERCIVAL monolithic active pixel prototype using synchrotron radiation

Characterisation of a PERCIVAL monolithic active pixel prototype using synchrotron radiation

Technology Needs for Modular Pixel Detectors

New detectors for light sources

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