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Record |
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Author  |
NEXT Collaboration (Perez Maneiro, M et al); Ayet, S.; Cid, M.; Cortes-Parra, C.; Kellerer, F.; Lopez-March, N.; Martin-Albo, J.; Martinez-Vara, M.; Novella, P.; Querol, M.; Renner, J.; Romo-Luque, C.; Saharia, P.; Simon, A.; Sorel, M.; Soto-Oton, J.; Teruel-Pardo, S.; Villamil, J.D. |
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Title |
Demonstration of sub-percent energy resolution in the NEXT-100 detector |
Type |
Journal Article |
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Year |
2026 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
86 |
Issue |
9 |
Pages |
1057 - 11pp |
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Abstract |
NEXT-100 is a high-pressure xenon time projection chamber with electroluminescent amplification, designed to operate with up to similar to 70.5 kg at 13.5 bar. It is the most recent detector developed by the NEXT collaboration to search for the neutrinoless double-beta decay (beta beta 0 nu) of Xe-136. The NEXT gas TPC technology offers the best energy resolution near the Q-value of the decay (Q(beta beta) = 2458 keV) among xenon detectors, which is set by design to be <1% FWHM. We report here the high-energy calibration of the detector using a Th-228 source, demonstrating excellent linear response and an energy resolution of (0.90 +/- 0.02)% FWHM at the Tl-208 photopeak (2615 keV). This performance extrapolates to a resolution at the double-beta decay end-point of R(Q(beta beta)) = (0.93 +/- 0.02)% FWHM, confirming the detector's capability for precision energy measurement in the search for beta beta 0 nu . |
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Address |
[Hauptman, J.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA, Email: samuele.torelli@dipc.org |
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Publisher |
Springer |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1434-6044 |
ISBN |
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Conference |
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Notes |
WOS:001872718800001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7443 |
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