Abstract
XENON10 is the first two-phase xenon time projection chamber (TPC) developed within the XENON dark matter search program. The TPC, with an active liquid xenon (LXe) mass of about 14 kg, was installed at the Gran Sasso Underground Laboratory (LNGS) in Italy, and operated for more than one year, with excellent stability and performance. Results from a dark matter search with XENON10 have been published elsewhere. In this paper, we summarize the design and performance of the detector and its subsystems, based on calibration data using sources of gamma-rays and neutrons as well as background and Monte Carlo simulation data. The results on the detector's energy threshold, position resolution, and overall efficiency show a performance that exceeds design specifications, in view of the very low energy threshold achieved (<10 keVr) and low background rate achieved.
Original language | English (US) |
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Pages (from-to) | 679-698 |
Number of pages | 20 |
Journal | Astroparticle Physics |
Volume | 34 |
Issue number | 9 |
DOIs | |
State | Published - Apr 2011 |
Funding
This work was supported by the National Science Foundation under Grants Nos. PHY-03-02646 and PHY-04-00596 , and by the Department of Energy under Contract No. DE-FG02-91ER40688, the CAREER Grant No. PHY-0542066, the Volkswagen Foundation (Germany) and the FCT Grant No. POCI/FIS/60534/2004 (Portugal). We thank the Director of the Gran Sasso National Laboratory, Prof. E. Coccia, and his staff for support throughout this effort. Special thanks go to the laboratory’s engineering team, led by P. Aprili, and to F. Redaelli of COMASUD for their contribution to the XENON10 installation. We are also thankful to Prof. Tom Haruyama for his contribution to the XENON10 cryogenics system and Dr. M. Laubenstein for the radioactivity screening of several XENON10 materials, especially the PMTs.
Keywords
- Dark matter
- Direct detection
- Liquid xenon
- Time projection chamber
ASJC Scopus subject areas
- Astronomy and Astrophysics