F. Nachtrab, M. Firsching, N. Uhlmann, C. Speier, P. Takman, T. Tuohimaa, C. Heinzl, J. Kastner, D. Larsson, A. Holmberg, G. Berti, M. Krumm, C. Sauerwein
KEYWORDS: Sensors, X-rays, Prototyping, X-ray optics, X-ray detectors, Inspection, Detector development, Time metrology, Calibration, Signal to noise ratio
The NanoXCT project aims at developing a laboratory nano-CT system for non-destructive testing applications in the
micro- and nano-technology sector. The system concept omits the use of X-ray optics, to be able to provide up to 1 mm
FOV (at 285 nm voxel size) and down to 50 nm voxel size (at 0.175 mm FOV) while preserving the flexibility of stateof-
the-art micro-CT systems. Within the project a suitable X-ray source, detector and manipulation system are being
developed. To cover the demand for elemental analysis, the project will additionally include X-ray spectroscopic
techniques. These will be reported elsewhere while this paper is focused on the imaging part of the project. We introduce
the system concept including design goals and constraints, and the individual components. We present the current state
of the prototype development including first results.
The present paper considers the use of X-Ray diffraction when applied for non destructive applications to surfaces with properties which are relevant for the qualification of the components of industrial plants or other related uses. The paper describes the most current worries related to calibration of diffractometers when they are used in laboratories; it introduces also a new approach to calculate the uncertainty of parameters related to the Bragg Equation. The approach implies to distinguish the Bragg angle from the effective angle occurring when settling a real experiment for x-ray diffraction measurements. Motivations are given for the introduction of such a new term. Moreover, based on recent networking experiences, a new conceptual approach to Round Robin test is given.
The paper starts from the fundamental of x-ray diffraction (i.e. the essential elements of the instruments, lattice and the measurement real conditions) to provide a consistent base of confidence on the achievable implementation of at distance controlled x-ray diffraction. Metrological approach to the calibration of x-ray diffraction measures and the use of uncertainty of the x-ray diffraction parameters is proposed here as an intermediate objective for real time sound interpretation of information and directive to impart from distance to the controlled diffractometers. The establishment of an extended network of diffractometers/laboratory (i.e the system acting as a reference for monitoring the calibration in several appropriate environment condition) is an other intermediate objective to engine the holistic learning of the whole system. Finally the basic hardware, the solution platform and the graphical user interface of the diffractometers is illustrated in detail to demonstrate that the at distance controlled diffractometers with robotic functioning features is a realistic achievable target.
Conference Committee Involvement (2)
Instruments, Methods, and Missions for Astrobiology IX
14 August 2006 | San Diego, California, United States
Instruments, Methods, and Missions for Astrobiology IX
31 July 2005 | San Diego, California, United States
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.