Measurement of radon-induced backgrounds in the NEXT double beta decay experiment
© 2018, The Author(s). The measurement of the internal 222Rn activity in the NEXT-White detector during the so-called Run-II period with 136Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT. The activity is measured through the alpha production rate induced in the fiducial volume by 222Rn and its alpha-emitting progeny. The specific activity is measured to be (38.1 ± 2.2 (stat.) ± 5.9 (syst.)) mBq/m3. Radon-induced electrons have also been characterized from the decay of the 214Bi daughter ions plating out on the cathode of the time projection chamber. From our studies, we conclude that radon-induced backgrounds are sufficiently low to enable a successful NEXT-100 physics program, as the projected rate contribution should not exceed 0.1 counts/yr in the neutrinoless double beta decay sample.[Figure not available: see fulltext.]
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); European Research Council (ERC); USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- The NEXT collaboration
- Grant/Contract Number:
- AC02-06CH11357; AC02-07CH11359; FG02-13ER42020; SC0017721; 339787-NEXT; 674896; 690575; 740055; FIS2014-53371-C04; PROMETEO/2016/120; SEJI/2017/011; TEAM/2016-2/17; AC02-05CH11231
- OSTI ID:
- 1437298
- Alternate ID(s):
- OSTI ID: 1483993; OSTI ID: 1550818
- Report Number(s):
- arXiv:1804.00471; FERMILAB-PUB-18-093-CD-ND; 1665520; TRN: US1900297
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2018, Issue 10; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
High Pressure Gas Xenon TPCs for Double Beta Decay Searches | preprint | January 2019 |
High Pressure Gas Xenon TPCs for Double Beta Decay Searches
|
journal | April 2019 |
Barium Chemosensors with Dry-Phase Fluorescence for Neutrinoless Double Beta Decay | preprint | January 2019 |
Barium Chemosensors with Dry-Phase Fluorescence for Neutrinoless Double Beta Decay
|
journal | October 2019 |
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