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Proceedings Paper

XRD-PhOBOS: software for optimization of the multi-blade MARS-XRD collimator; an update
Author(s): Carlo Pelliciari
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Paper Abstract

A multi-blade collimator is a structure with leaf of absorbing material mounted parallel each other or slightly tilted; the Soller slit is an example of such system. XRD-PhOBOS analyses automatically billion of configurations that differ each other for tilt and position of the blades. It selects only those configurations that generate a beam with a given section, then it compares the flux transmitted and it saves the system whit the highest performance. The software gives information about angular spread and spatial distribution of the photons on the target and also indicate the contribution of each couple of blades to the total flux. The algorithm is based on geometrical calculations and this gives a execution speed> x106 compared with Montecarlo ray-tracing code. XRD-PhOBOS is useful in those experiments where time and accuracy are important without using sophisticated instruments, in fact a multiblade system can be a robust and low cost system. It increases the efficiency almost twice compared to a classical system with blades manually configured and irradiates the sample with very high position accuracy. Present status and future plan of XRD-PhOBOS will be presented.

Paper Details

Date Published:
PDF: 10 pages
Proc. SPIE 8141, Advances in Computational Methods for X-Ray Optics II, 81410X; doi: 10.1117/12.892037
Show Author Affiliations
Carlo Pelliciari, International Research School of Planetary Sciences (Italy)

Published in SPIE Proceedings Vol. 8141:
Advances in Computational Methods for X-Ray Optics II
Manuel Sanchez del Rio; Oleg Chubar, Editor(s)

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