Lowering the low-energy threshold of xenon detectors

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Sorensen, P (Author) Other; Angle, J (Author) Other; Aprile, E (Author) Other; Arneodo, F (Author) Other; Baudis, L (Author) Other; Bernstein, A (Author) Other; Bolozdynya, A (Author) Other; Coelho, LCC (Author) FCUP; Dahl, CE (Author) Other; DeViveiros, L (Author) Other; Ferella, AD (Author) Other; Fernandes, LMP (Author) Other; Fiorucci, S (Author) Other; Gaitskell, RJ (Author) Other; Giboni, KL (Author) Other; Gomez, R (Author) Other; Hasty, R (Author) Other; Kastens, L (Author) Other; Kwong, J (Author) Other; Lopes, JAM (Author) Other; Madden, N (Author) Other; Manalaysay, A (Author) Other; Manzur, A (Author) Other; McKinsey, DN (Author) Other; Monzani, ME (Author) Other; Ni, K (Author) Other; Oberlack, U (Author) Other; Orboeck, J (Author) Other; Plante, G (Author) Other; Santorelli, R (Author) Other; Dos Santos, JMF (Author) Other; Schulte, S (Author) Other; Shagin, P (Author) Other; Shutt, T (Author) Other; Winant, C (Author) Other; Yamashita, M (Author) Other

Conference proceedings International

Title: Proceedings of Science

8th International Workshop on Identification of Dark Matter, IDM 2010

Montpellier, 26 July 2010 through 30 July 2010

Indexing

Scopus - 3 Citations

Other information

Authenticus ID: P-008-AJ4

Abstract (EN): 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. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7