Region-of-interest micro-focus CT based on an all-optical inverse Compton scattering source

Yue Ma; Jianfei Hua; Dexiang Liu; Yunxiao He; Tianliang Zhang; Jiucheng Chen; Fan Yang; Xiaonan Ning; Zhongshan Yang; Jie Zhang; Chih-Hao Pai; Yuqiu Gu; Wei Lu

arXiv · 2003.12837

Region-of-interest micro-focus CT based on an all-optical inverse Compton scattering source

Yue Ma·Jianfei Hua·Dexiang Liu·Yunxiao He·Tianliang Zhang·Jiucheng Chen·Fan Yang·Xiaonan Ning·Zhongshan Yang·Jie Zhang·Chih-Hao Pai·Yuqiu Gu·Wei Lu

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Abstract

Micro-focus computed tomography (CT), enabling the reconstruction of hyperfine structure within objects, is a powerful nondestructive testing tool in many fields. Current X-ray sources for micro-focus CT are typically limited by their relatively low photon energy and low flux. An all-optical inverse Compton scattering source (AOCS) based on laser wakefield accelerator (LWFA) can generate intense quasi-monoenergetic X/gamma-ray pulses in the keV-MeV range with micron-level source size, and its potential application for micro-focus CT has become very attractive in recent years due to the fast pace progress made in LWFA. Here we report the first experimental demonstration of high-fidelity micro-focus CT using AOCS (~70 keV) by imaging and reconstructing a test object with complex inner structures. A region-of-interest (ROI) CT method is adopted to utilize the relatively small field-of-view (FOV) of AOCS to obtain high-resolution reconstruction. This demonstration of the ROI micro-focus CT based on AOCS is a key step for its application in the field of hyperfine nondestructive testing.

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Yue Ma, Jianfei Hua, Dexiang Liu, Yunxiao He, Tianliang Zhang, Jiucheng Chen, Fan Yang, Xiaonan Ning, Zhongshan Yang, Jie Zhang, Chih-Hao Pai, Yuqiu Gu, Wei Lu. 2020-03-28. Region-of-interest micro-focus CT based on an all-optical inverse Compton scattering source. https://arxiv.org/abs/2003.12837

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