1：Experimental Design and Method Selection:

The Na2W2O7 single crystal was grown using the conventional Czochralski technique. The crystal structure was verified by powder X-ray diffraction (XRD) analysis. Luminescence and scintillation properties were evaluated at room temperature.

2：Sample Selection and Data Sources:

Highly pure Na2CO3 and WO3 powders were used as starting materials. The luminescence and scintillation properties were studied using X-ray and proton sources.

3：List of Experimental Equipment and Materials:

Philips XPRT-MED X-ray diffractometer, DRGEM Co. X-ray tube, QE65000 spectrometer, USB4000 spectrometer, V-650 Spectrometer, Carry Eclipse Fluorescence Spectrophotometer, HARSAA 4500 manual TLD Reader, photomultiplier tube (PMT, Hamamastu R6233), preamplifier (Canberra 2005), ORTEC571 spectroscopic shaping amplifier, 25 MS/s flash analogue-to-digital converter (FADC).

4：Experimental Procedures and Operational Workflow:

The crystal was grown, and its properties were measured using various spectroscopic and scintillation techniques.

5：Data Analysis Methods:

The data were analyzed using HighScore Plus software, WinREMS software, and a C++ language code based on the ROOT package.