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Measurement of ambient radon progeny decay rates and energy spectra in liquid argon using the MicroBooNE detector

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arxiv 2307.03102 v3 pith:EF6A6TOS submitted 2023-07-06 hep-ex physics.ins-det

Measurement of ambient radon progeny decay rates and energy spectra in liquid argon using the MicroBooNE detector

MicroBooNE collaboration: P. Abratenko , O. Alterkait , D. Andrade Aldana , L. Arellano , J. Asaadi , A. Ashkenazi , S. Balasubramanian , B. Baller
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G. Barr D. Barrow J. Barrow V. Basque O. Benevides Rodrigues S. Berkman A. Bhanderi A. Bhat M. Bhattacharya M. Bishai A. Blake B. Bogart T. Bolton J.Y. Book L. Camilleri Y. Cao D. Caratelli I. Caro Terrazas F. Cavanna G. Cerati Y. Chen J.M. Conrad M. Convery L. Cooper-Troendle J.I. Crespo-Anadon R. Cross M. Del Tutto S.R. Dennis P. Detje A. Devitt R. Diurba Z. Djurcic R. Dorrill K. Duffy S. Dytman B. Eberly P. Englezos A. Ereditato J.J. Evans R. Fine O.G. Finnerud B.T. Fleming N. Foppiani W. Foreman D. Franco A.P. Furmanski D. Garcia-Gamez S. Gardiner G. Ge S. Gollapinni O. Goodwin E. Gramellini P. Green H. Greenlee W. Gu R. Guenette P. Guzowski L. Hagaman O. Hen R. Hicks C. Hilgenberg G.A. Horton-Smith Z. Imani B. Irwin R. Itay C. James X. Ji L. Jiang J.H. Jo R.A. Johnson Y.J. Jwa D. Kalra N. Kamp G. Karagiorgi W. Ketchum M. Kirby T. Kobilarcik I. Kreslo M. B. Leibovitch I. Lepetic J.-Y. Li K. Li Y. Li K. Lin B.R. Littlejohn H. Liu W.C. Louis X. Luo C. Mariani D. Marsden J. Marshall N. Martinez D.A. Martinez Caicedo S. Martynenko A. Mastbaum N. McConkey V. Meddage J. Micallef K. Miller K. Mistry T. Mohayai A. Mogan M. Mooney A.F. Moor C.D. Moore L. Mora Lepin M. Moudgalya S. Mulleria Babu D. Naples A. Navrer-Agasson N. Nayak M. Nebot-Guinot J. Nowak N. Oza O. Palamara N. Pallat V. Paolone A. Papadopoulou V. Papavassiliou H. Parkinson S.F. Pate N. Patel Z. Pavlovic E. Piasetzky I. Ponce-Pinto I. Pophale X. Qian J.L. Raaf V. Radeka A. Rafique M. Reggiani-Guzzo L. Ren L. Rochester J. Rodriguez Rondon M. Rosenberg M. Ross-Lonergan C. Rudolph von Rohr I. Safa G. Scanavini D.W. Schmitz A. Schukraft W. Seligman M.H. Shaevitz R. Sharankova J. Shi E.L. Snider M. Soderberg S. Soldner-Rembold J. Spitz M. Stancari J. St. John T. Strauss A.M. Szelc W. Tang N. Taniuchi K. Terao C.Thorpe D. Torbunov D. Totani M. Toups Y.-T. Tsai J. Tyler M.A. Uchida T. Usher B. Viren M. Weber H. Wei A.J. White Z. Williams S. Wolbers T. Wongjirad M. Wospakrik K. Wresilo N. Wright W. Wu E. Yandel T. Yang L.E. Yates H.W. Yu G.P. Zeller J. Zennamo C. Zhang
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classification hep-ex physics.ins-det
keywords argonliquidradonbulkdetectorlimitmicrobooneactive
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report measurements of radon progeny in liquid argon within the MicroBooNE time projection chamber (LArTPC). The presence of specific radon daughters in MicroBooNE's 85 metric tons of active liquid argon bulk is probed with newly developed charge-based low-energy reconstruction tools and analysis techniques to detect correlated $^{214}$Bi-$^{214}$Po radioactive decays. Special datasets taken during periods of active radon doping enable new demonstrations of the calorimetric capabilities of single-phase neutrino LArTPCs for $\beta$ and $\alpha$ particles with electron-equivalent energies ranging from 0.1 to 3.0 MeV. By applying $^{214}$Bi-$^{214}$Po detection algorithms to data recorded over a 46-day period, no statistically significant presence of radioactive $^{214}$Bi is detected, and a limit on the activity is placed at $<0.35$ mBq/kg at the 95% confidence level. This bulk $^{214}$Bi radiopurity limit -- the first ever reported for a liquid argon detector incorporating liquid-phase purification -- is then further discussed in relation to the targeted upper limit of 1 mBq/kg on bulk $^{222}$Rn activity for the DUNE neutrino detector.

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Cited by 2 Pith papers

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  1. Neutron Reconstruction via Blips in Liquid Argon Time Projection Chambers

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    Simulation-based proof-of-concept demonstrates neutron identification and reconstruction of direction and energy using blips from inelastic scattering in LArTPCs.

  2. Neutron Reconstruction via Blips in Liquid Argon Time Projection Chambers

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    Simulation shows LArTPC blips from neutron inelastic scattering can identify neutrons and reconstruct final-state neutron direction and energy in sub-GeV neutrino interactions.