## 2 Materials and Methods
### Measurement Protocol  
The \"Pre-Bleached with Blue LED\" Protocol involves exposing the vitreous sample to blue LED light for a duration of 500 s, followed by evaluation of the accident dose and calibration dose signals. A significant adjustment was made to the incident dosimetry protocol for the sieved rocks extracted from the wall, where the incident dose was compared to the equivalent dose.  
The measurement procedure involved three dose irradiations of 5.5, 11 and 16.5 Gy, respectively. Signal integration was conducted within the 85-140 channel, corresponding to a temperature range of 150 \({}^{\circ}\)C to 250 \({}^{\circ}\)C. In addition, thermoluminescence measurements were performed up to 450 \({}^{\circ}\)C at a heating rate of 2 \({}^{\circ}\)C/s (Table 3).  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Sample**} & \multirow{2}{*}{**Water Content (\%)**} & \multirow{2}{*}{\begin{tabular}{c} **238**U** \\ **(ppm; \(\pm\)5\%)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **232**Th** \\ **(ppm; \(\pm\)5\%)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **40**K** \\ **(ppm; \(\pm\)3\%)** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **Internal Dose Rate** \\ **(mGy a\({}^{-1}\); \(\pm\)5\%)** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **External Dose Rate** \\ **(mGy a\({}^{-1}\); \(\pm\)5\%)** \\ \end{tabular} } \\ \hline SE9 & 7 & 0.37 & 20.75 & 1.21 & 1.52 & 0.62 \\ SE2 & 7 & 0.06 & 1.08 & 1.22 & 0.83 & 0.68 \\ SE6 & 7 & 0.09 & 1.03 & 1.22 & 0.83 & 0.62 \\ SE7 & 7 & 0.15 & 0.42 & 1.22 & 0.82 & 0.68 \\ SE12 & 7 & 0.26 & 1.29 & 1.22 & 0.87 & 0.68 \\ SE13 & 7 & 0.43 & 17.32 & 1.22 & 1.47 & 0.68 \\ SV 13P & 7 & 0.19 & 4.67 & 1.22 & 0.82 & 0.68 \\ SV 4C & 7 & 0.04 & 0.21 & 1.22 & 0.79 & 0.68 \\ SV5 & 7 & 0.14 & 1.95 & 1.22 & 0.87 & 0.68 \\ SV6 & 7 & 0.22 & 0.39 & 1.22 & 0.83 & 0.68 \\ SV 1A & 7 & 0.37 & 5.91 & 2.01 & 1.53 & 0.65 \\ SV 1B & 7 & 1.59 & 12.02 & 2.01 & 1.93 & 0.65 \\ SV 13V & 7 & 0.47 & 7.94 & 2.01 & 1.60 & 0.68 \\ SV 4V & 7 & 0.27 & 1.01 & 2.01 & 1.34 & 0.68 \\ \hline \hline \end{tabular}
\end{table}
Table 2: Dose rate measurements’ results.  
\begin{table}
\begin{tabular}{c c} \hline \hline \multicolumn{1}{c}{**Step**} & \multicolumn{1}{c}{**Treatment**} \\ \hline \hline \multicolumn{1}{c}{1} & 500 s blue LED bleaching \\ \hline \multicolumn{1}{c}{2} & \multicolumn{1}{c}{TL 450 \({}^{\circ}\)C, 2 \({}^{\circ}\)C/s} \\ \hline \hline \multicolumn{1}{c}{3} & \multicolumn{1}{c}{5.5 Gy (50 s g)} \\ \multicolumn{1}{c}{3} & \multicolumn{1}{c}{\({}^{\text{b}}\) 11 Gy (100 s g)} \\ \multicolumn{1}{c}{4} & \multicolumn{1}{c}{\({}^{\text{c}}\) 16.5 Gy (150 s g)} \\ \hline \multicolumn{1}{c}{4} & \multicolumn{1}{c}{500 s blue LED bleaching} \\ \hline \multicolumn{1}{c}{5} & \multicolumn{1}{c}{TL 450 \({}^{\circ}\)C, 2 \({}^{\circ}\)C/s} \\ \hline \hline \end{tabular}
\end{table}
Table 3: Pre-bleached with blue LED protocol, where a, b, c correspond to the 3 different doses given during treatment in the 3 different cycles.  
In order to evaluate the effectiveness of the applied blue LED, a \"classical\" thermoluminescence protocol was introduced for comparative analysis. This additional step ensures a comprehensive evaluation of the results obtained with \"Pre-bleached with Blue LED\" approach, providing a broader understanding of the thermoluminescent properties of glassy samples (Table 4). It is therefore to be considered as a qualitative and not a quantitative evaluation with a comparison of the obtained dates.