Low energy calibration in DUNE far detector prototypes
Fuente:
arXiv
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866918032178151424 |
|---|---|
| author | Lavaut, Emile |
| author_facet | Lavaut, Emile |
| contents | The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino experiment. In addition to GeV-scale oscillation measurements ($δ_{CP}$, $θ_{23}$ octant, mass ordering), DUNE features a low-energy (MeV-scale) program targeting solar, supernova burst (SNB), and Diffuse Supernova Background (DSNB) neutrinos. Accurate reconstruction and background understanding are critical. $^{39}$Ar $β$-decays, naturally present in LAr, provide a uniform background and can be used for calibration. This proceeding presents an analysis of isolated MeV-scale energy deposits in the ProtoDUNE-HD (PDHD) prototype. Using cosmic + beam data (run 28086), we analyze energy spectra and spatial distributions of $^{39}$Ar, $^{232}$Th, and $^{207}$Bi. A calibration factor $c_A = (3.9 \pm 0.3)\times 10^{-2}~\text{MeV}/\text{ADC} \times \text{tick}$ and recombination factor $R = 0.60 \pm 0.05$ are extracted, consistent with expectations. The $^{207}$Bi source is spatially resolved with cm-level precision, and $^{232}$Th hot spots align with the field cage structure, offering further calibration potential. These results demonstrate PDHD capability for MeV-scale reconstruction, supporting DUNE low-energy physics goals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_18073 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low energy calibration in DUNE far detector prototypes Lavaut, Emile High Energy Physics - Experiment Instrumentation and Detectors The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino experiment. In addition to GeV-scale oscillation measurements ($δ_{CP}$, $θ_{23}$ octant, mass ordering), DUNE features a low-energy (MeV-scale) program targeting solar, supernova burst (SNB), and Diffuse Supernova Background (DSNB) neutrinos. Accurate reconstruction and background understanding are critical. $^{39}$Ar $β$-decays, naturally present in LAr, provide a uniform background and can be used for calibration. This proceeding presents an analysis of isolated MeV-scale energy deposits in the ProtoDUNE-HD (PDHD) prototype. Using cosmic + beam data (run 28086), we analyze energy spectra and spatial distributions of $^{39}$Ar, $^{232}$Th, and $^{207}$Bi. A calibration factor $c_A = (3.9 \pm 0.3)\times 10^{-2}~\text{MeV}/\text{ADC} \times \text{tick}$ and recombination factor $R = 0.60 \pm 0.05$ are extracted, consistent with expectations. The $^{207}$Bi source is spatially resolved with cm-level precision, and $^{232}$Th hot spots align with the field cage structure, offering further calibration potential. These results demonstrate PDHD capability for MeV-scale reconstruction, supporting DUNE low-energy physics goals. |
| title | Low energy calibration in DUNE far detector prototypes |
| topic | High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2505.18073 |