Granato, Stefanie: The response of silicon PNCCD sensors with aluminum on-chip filter to visible light, UV- and X-ray radiationThe Die Antwortfunktion von Silizium-Detektoren mit Aluminium-Lichtfilter für sichtbares Licht, UV- und Röntgenstrahlung. 2012
Inhalt
- Abstract
- Zusammenfassung
- Contents
- Glossary
- Acronyms
- Introduction
- Interaction of radiation with matter
- Atomic model and band structure in solids
- Interaction of visible and VUV radiation
- Optical properties of thin films
- Interaction of EUV and X-ray radiation
- Atomic relaxation
- Secondary electron interactions
- Radiation detection with PNCCDs
- The pn junction
- PNCCD detector concept
- Readout electronics
- The detector entrance window
- The PNCCD spectrum
- Radiation sources
- Experimental methods
- CCD system setup
- Experimental facilities of BESSY II and MLS
- Measurement of optical attenuation using photodiodes
- PNCCD measurements in integrating mode
- QE measurements with a continuous synchrotron spectrum
- Measurement of the X-ray spectral redistribution function
- Data analysis methods
- The PNCCD Standard Analysis Procedure
- Event filtering and recombination
- Energy calibration and gain linearity
- Evaluation of monochromatic spectra
- Evaluation of the QE measurement with continuous spectrum
- Determining an integrated signal with PNCCDs
- Attenuation of visible light and UV radiation by the on-chip filter
- Measurement results
- The aluminum thin film structure
- An empiric description of the attenuation factor
- Analysis of X-ray quantum efficiency measurements
- Absorption edge fine structure
- The quantum efficiency between 200 eV and 10 keV
- Homogeneity of the quantum efficiency
- Monte-Carlo simulation of the X-ray spectral redistribution
- Motivation
- Simulation overview
- Photon and electron transport and interaction
- Detector specific model
- Analysis of the spectral redistribution function
- Spectral features
- Spectra at the K-shell absorption edges
- Comparison between measurement and simulation
- Energy resolution
- Formation of the flat shelf
- Conclusions for eROSITA
- Analytic description of the redistribution function
- The spectral response of eROSITA flight cameras
- Comparison of on-chip and external filter
- Summary
- Bibliography
- List of Figures
- List of Tables
- Absorption length in Al, Si, SiO_2 and Si_3N_4
- Measurement data
- Deriving the analytic expression for the peak shape
- Comments on the Geant4 simulation
- Acknowledgements