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The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of 116Cd
Joint Authors
Durst, Jürgen
Michel, Thilo
Gleixner, Thomas
Filipenko, Mykhaylo
Geißelsöder, Stefan
Source
Advances in High Energy Physics
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-17
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
We investigated the potential of the energy resolving hybrid pixel detector Timepix contacted to a CdTe sensor layer for the search for the neutrinoless double-beta decay of Cd.
We found that a CdTe sensor layer with 3 mm thickness and 165 μm pixel pitch is optimal with respect to the effective Majorana neutrino mass (mββ) sensitivity.
In simulations, we were able to demonstrate a possible reduction of the background level caused by single electrons by approximately 75% at a specific background rate of 10−3 counts/(kg×keV×yr) at a detection efficiency reduction of about 23% with track analysis employing random decision forests.
Exploitation of the imaging properties with track analysis leads to an improvement in sensitivity to mββ by about 22%.
After 5 years of measuring time, the sensitivity to mββ of a 420 kg CdTe experiment (90% Cd enrichment) would be 59 meV on a 90% confidence level for a specific single-electron background rate of 10−3 counts/(kg×keV×yr).
The α-particle background can be suppressed by at least about six orders of magnitude.
The benefit of the hybrid pixel detector technology might be increased significantly if drift-time difference measurements would allow reconstruction of tracks in three dimensions.
American Psychological Association (APA)
Michel, Thilo& Gleixner, Thomas& Durst, Jürgen& Filipenko, Mykhaylo& Geißelsöder, Stefan. 2013. The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of 116Cd. Advances in High Energy Physics،Vol. 2013, no. 2013, pp.1-20.
https://search.emarefa.net/detail/BIM-446761
Modern Language Association (MLA)
Michel, Thilo…[et al.]. The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of 116Cd. Advances in High Energy Physics No. 2013 (2013), pp.1-20.
https://search.emarefa.net/detail/BIM-446761
American Medical Association (AMA)
Michel, Thilo& Gleixner, Thomas& Durst, Jürgen& Filipenko, Mykhaylo& Geißelsöder, Stefan. The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of 116Cd. Advances in High Energy Physics. 2013. Vol. 2013, no. 2013, pp.1-20.
https://search.emarefa.net/detail/BIM-446761
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-446761