APT Calibrator: A Multifunctional C# Software Application for Reconstruction Calibration in Atom Probe Tomography

Atom probe tomography provides compositional mapping of materials at the nanoscale, and in that sense accurate reconstruction of the atomic positions is crucial for precise and accurate analysis. Here, we introduce the "APT Calibrator," developed in C#, a software tool that aids in the calibration of atom probe tomography reconstructions. It integrates essential calibration methods proposed over the past two decades to derive the key hyperparameters, such as the image compression factor and field reduction factor, allows for dynamic reconstruction of the data using a newly introduced method based on the use of fiducial markers that we refer to as "golden seed," and facilitates atom probe crystallographic analysis of microstructural defects. The software features a straightforward interface, simplifying the calibration process and making it more accessible.