@inproceedings{226f0b16c5434e19a1ae02f572f56b62,
title = "Ptychographic Nano-Analytical Microscope (PtyNAMi) at PETRA III: Signal-to-background optimization for imaging with high sensitivity",
abstract = "The X-ray scanning microscope PtyNAMi at beamline P06 of PETRA III at DESY in Hamburg, Germany, is designed for high-spatial-resolution 3D imaging with high sensitivity. Besides optimizing the coherent ux density on the sample and the precision mechanics of the scanner, special care has been taken to reduce background signals on the detector. The optical path behind the sample is evacuated up until the sensor of a four-megapixel detector that is placed into the vacuum. In this way, parasitic scattering from air and windows close to the detector is avoided. The instrument has been commissioned and is in user operation. The main commissioning results of the low-background detector system are presented. A signal-to-noise model for small object details is derived that includes incoherent background scattering.",
keywords = "Detection sensitivity, Ptychography, Signal-to-background ratio, Spatial resolution, Tomography, X-ray microscopy",
author = "Schroer, {Christian G.} and Martin Seyrich and Andreas Schropp and Ralph D{\"o}hrmann and Stephan Botta and Patrik Wiljes and Dennis Br{\"u}ckner and Maik Kahnt and Felix Wittwer and Lukas Grote and Dorota Koziej and Jan Garrevoet and Gerald Falkenberg",
year = "2019",
month = jan,
day = "1",
doi = "10.1117/12.2529096",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Barry Lai and Andrea Somogyi",
booktitle = "X-Ray Nanoimaging",
address = "United States",
note = "X-Ray Nanoimaging: Instruments and Methods IV 2019 ; Conference date: 11-08-2019 Through 12-08-2019",
}