Sensitivity calibration of a Carestream HPX-1 image plate scanner

Technical Report · Sat Feb 01 04:00:00 EST 2025

DOI:https://doi.org/10.2172/2530803· OSTI ID:2530803

Maestas, Antoinette Andrea ^[1]; Dunham, Gregory Sham ^[1]

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1. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

There is a need to measure the sensitivity of the image plate scanners used to scan Z shot data. The Carestream HPX-1 image plate scanner was tested, and its performance was characterized to determine the system sensitivity in terms of signal per incident photon as a function of x-ray energy. A Manson source was used to simultaneously expose an Amptek x-ray multi-channel analyzer and image plates, allowing for a comparison of the counts as a function of energy to the signal recorded on the image plates. NIST-certified radioactive sources were used to assign an absolute sensitivity. Results indicate that the HPX-1 scanner response matches the shape of the modeled response, allowing for absolute scaling using NIST-certified radioisotope sources. The HPX-1 scanner shows a stable response with measurements taken over one week. In contrast, the sensitivity of the DITABIS scanner was characterized using the same approach, but it exhibits changes in its response that varied by more than 50% over the span of 4 days.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: NA0003525
• OSTI ID: 2530803
• Report Number(s): SAND--2025-02310
• Country of Publication: United States
• Language: English

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