Lowering the low-energy threshold of xenon detectors

P. Sorensen, J. Angle, E. Aprile, Francesco Arneodo, L. Baudis, A. Bernstein, A. Bolozdynya, L. C.C. Coelho, C. E. Dahl, L. DeViveiros, A. D. Ferella, L. M.P. Fernandes, S. Fiorucci, R. J. Gaitskell, K. L. Giboni, R. Gomez, R. Hasty, L. Kastens, J. Kwong, J. A.M. LopesN. Madden, A. Manalaysay, A. Manzur, D. N. McKinsey, M. E. Monzani, K. Ni, U. Oberlack, J. Orboeck, G. Plante, R. Santorelli, J. M.F. Dos Santos, S. Schulte, P. Shagin, T. Shutt, C. Winant, M. Yamashita

Research output: Contribution to journalConference article

Abstract

We show that the energy threshold for nuclear recoils in the XENON10 dark matter search data can be lowered to ∼ 1 keV, by using only the ionization signal. In other words, we make no requirement that a valid event contain a primary scintillation signal. We therefore relinquish incident particle type discrimination, which is based on the ratio of ionization to scintillation in liquid xenon. This method compromises the detector's ability to precisely determine the z coordinate of a particle interaction. However, we show for the first time that it is possible to discriminate bulk events from surface events based solely on the ionization signal.

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - Dec 1 2010
Event8th International Workshop on Identification of Dark Matter, IDM 2010 - Montpellier, France
Duration: Jul 26 2010Jul 30 2010

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xenon
ionization
scintillation
thresholds
detectors
particle interactions
discrimination
energy
dark matter
requirements
liquids

ASJC Scopus subject areas

  • General

Cite this

Sorensen, P., Angle, J., Aprile, E., Arneodo, F., Baudis, L., Bernstein, A., ... Yamashita, M. (2010). Lowering the low-energy threshold of xenon detectors. Proceedings of Science.

Lowering the low-energy threshold of xenon detectors. / Sorensen, P.; Angle, J.; Aprile, E.; Arneodo, Francesco; Baudis, L.; Bernstein, A.; Bolozdynya, A.; Coelho, L. C.C.; Dahl, C. E.; DeViveiros, L.; Ferella, A. D.; Fernandes, L. M.P.; Fiorucci, S.; Gaitskell, R. J.; Giboni, K. L.; Gomez, R.; Hasty, R.; Kastens, L.; Kwong, J.; Lopes, J. A.M.; Madden, N.; Manalaysay, A.; Manzur, A.; McKinsey, D. N.; Monzani, M. E.; Ni, K.; Oberlack, U.; Orboeck, J.; Plante, G.; Santorelli, R.; Dos Santos, J. M.F.; Schulte, S.; Shagin, P.; Shutt, T.; Winant, C.; Yamashita, M.

In: Proceedings of Science, 01.12.2010.

Research output: Contribution to journalConference article

Sorensen, P, Angle, J, Aprile, E, Arneodo, F, Baudis, L, Bernstein, A, Bolozdynya, A, Coelho, LCC, Dahl, CE, DeViveiros, L, Ferella, AD, Fernandes, LMP, Fiorucci, S, Gaitskell, RJ, Giboni, KL, Gomez, R, Hasty, R, Kastens, L, Kwong, J, Lopes, JAM, Madden, N, Manalaysay, A, Manzur, A, McKinsey, DN, Monzani, ME, Ni, K, Oberlack, U, Orboeck, J, Plante, G, Santorelli, R, Dos Santos, JMF, Schulte, S, Shagin, P, Shutt, T, Winant, C & Yamashita, M 2010, 'Lowering the low-energy threshold of xenon detectors', Proceedings of Science.
Sorensen P, Angle J, Aprile E, Arneodo F, Baudis L, Bernstein A et al. Lowering the low-energy threshold of xenon detectors. Proceedings of Science. 2010 Dec 1.
Sorensen, P. ; Angle, J. ; Aprile, E. ; Arneodo, Francesco ; Baudis, L. ; Bernstein, A. ; Bolozdynya, A. ; Coelho, L. C.C. ; Dahl, C. E. ; DeViveiros, L. ; Ferella, A. D. ; Fernandes, L. M.P. ; Fiorucci, S. ; Gaitskell, R. J. ; Giboni, K. L. ; Gomez, R. ; Hasty, R. ; Kastens, L. ; Kwong, J. ; Lopes, J. A.M. ; Madden, N. ; Manalaysay, A. ; Manzur, A. ; McKinsey, D. N. ; Monzani, M. E. ; Ni, K. ; Oberlack, U. ; Orboeck, J. ; Plante, G. ; Santorelli, R. ; Dos Santos, J. M.F. ; Schulte, S. ; Shagin, P. ; Shutt, T. ; Winant, C. ; Yamashita, M. / Lowering the low-energy threshold of xenon detectors. In: Proceedings of Science. 2010.
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AU - Sorensen, P.

AU - Angle, J.

AU - Aprile, E.

AU - Arneodo, Francesco

AU - Baudis, L.

AU - Bernstein, A.

AU - Bolozdynya, A.

AU - Coelho, L. C.C.

AU - Dahl, C. E.

AU - DeViveiros, L.

AU - Ferella, A. D.

AU - Fernandes, L. M.P.

AU - Fiorucci, S.

AU - Gaitskell, R. J.

AU - Giboni, K. L.

AU - Gomez, R.

AU - Hasty, R.

AU - Kastens, L.

AU - Kwong, J.

AU - Lopes, J. A.M.

AU - Madden, N.

AU - Manalaysay, A.

AU - Manzur, A.

AU - McKinsey, D. N.

AU - Monzani, M. E.

AU - Ni, K.

AU - Oberlack, U.

AU - Orboeck, J.

AU - Plante, G.

AU - Santorelli, R.

AU - Dos Santos, J. M.F.

AU - Schulte, S.

AU - Shagin, P.

AU - Shutt, T.

AU - Winant, C.

AU - Yamashita, M.

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N2 - We show that the energy threshold for nuclear recoils in the XENON10 dark matter search data can be lowered to ∼ 1 keV, by using only the ionization signal. In other words, we make no requirement that a valid event contain a primary scintillation signal. We therefore relinquish incident particle type discrimination, which is based on the ratio of ionization to scintillation in liquid xenon. This method compromises the detector's ability to precisely determine the z coordinate of a particle interaction. However, we show for the first time that it is possible to discriminate bulk events from surface events based solely on the ionization signal.

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