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Characterisation of a PERCIVAL monolithic active pixel prototype using synchrotron radiation
- Source :
- Journal of Instrumentation 11(02), C02090 (2016). doi:10.1088/1748-0221/11/02/C02090, iWoRiD 2015, Hamburg, Germany, 2015-06-28-2015-07-02
- Publication Year :
- 2016
- Publisher :
- Deutsches Elektronen-Synchrotron, DESY, Hamburg, 2016.
-
Abstract
- iWoRiD 2015, Hamburg, Germany, 28 Jun 2015 - 2 Jul 2015; Journal of Instrumentation 11(02), C02090 (2016). doi:10.1088/1748-0221/11/02/C02090<br />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-side-illuminated (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.<br />Published by Inst. of Physics, London
- Subjects :
- 010302 applied physics
Physics
CMOS sensor
X-ray detectors
Instrumentation for FEL
Solid state detectors
Pixel
010308 nuclear & particles physics
business.industry
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
X-ray detector
Synchrotron radiation
DESY
01 natural sciences
CMOS
0103 physical sciences
Optoelectronics
ddc:610
business
Instrumentation
Mathematical Physics
Energy (signal processing)
Subjects
Details
- Language :
- English
- ISSN :
- 17480221
- Database :
- OpenAIRE
- Journal :
- Journal of Instrumentation 11(02), C02090 (2016). doi:10.1088/1748-0221/11/02/C02090, iWoRiD 2015, Hamburg, Germany, 2015-06-28-2015-07-02
- Accession number :
- edsair.doi.dedup.....76f2475f24e7c474cab3b71bf89ae7ab
- Full Text :
- https://doi.org/10.3204/pubdb-2016-05817