Recent progress of phase-contrast imaging at Tsinghua Thomson-scattering X-ray source
| Autor: | Zhijun Chi, Chuanxiang Tang, Wenhui Huang, Yingchao Du, Zhen Zhang, Huaibi Chen, Lixin Yan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Nuclear and High Energy Physics Photon Thomson scattering business.industry Astrophysics::High Energy Astrophysical Phenomena Far-infrared laser Monte Carlo method X-ray Phase-contrast imaging 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Pulse (physics) Optics 0103 physical sciences 010306 general physics 0210 nano-technology business Instrumentation Jitter |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 402:364-369 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2017.02.062 |
| Popis: | Due to its small spot size, a Thomson-scattering X-ray source can produce high spatial coherent X-ray pulse, which is the prerequisite for phase-contrast imaging. In this paper, we will introduce the recent progress of phase-contrast imaging at Tsinghua Thomson-scattering X-ray source (TTX). Since the generation of first hard X-ray pulse at TTX in 2012, we have demonstrated the capacity of in-line phase contrast imaging using a refill of gel ink pen. And then, a Monte Carlo simulation tool for in-line phase-contrast imaging based on Thomson-scattering X-ray source has been developed. Taking advantage of this code, we calculate the typical requirement of photon numbers for in-line phase-contrast imaging based on this type of X-ray source. After the upgrade of infrared laser system and control program, the total photon yield of TTX has been increased to ∼2 × 10 7 photons/pulse at X-ray central energy of 25 keV and 50 keV with RMS jitter less than 6% and 4% respectively. A new run of experiments about in-line phase-contrast imaging and phase-contrast computed tomography (CT) have been carried out at TTX. |
| Databáze: | OpenAIRE |
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