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ZE3RA: the ZEPLIN-III Reduction and Analysis package
File(s)
1106.0808v1.pdf (642.81 KB)
Accepted version
OA Location
Author(s)
Neves, F
Akimov, DY
Araujo, HM
Barnes, EJ
Belov, VA
Type
Journal Article
Abstract
ZE3RA is the software package responsible for processing the raw data from the ZEPLIN-III dark matter experiment and its reduction into a set of parameters used in all subsequent analyses. The detector is a liquid xenon time projection chamber with scintillation and electroluminescence signals read out by an array of 31 photomultipliers. The dual range 62-channel data stream is optimised for the detection of scintillation pulses down to a single photoelectron and of ionisation signals as small as those produced by single electrons. We discuss in particular several strategies related to data filtering, pulse finding and pulse clustering which are tuned using calibration data to recover the best electron/nuclear recoil discrimination near the detection threshold, where most dark matter elastic scattering signatures are expected. The software was designed assuming only minimal knowledge of the physics underlying the detection principle, allowing an unbiased analysis of the experimental results and easy extension to other detectors with similar requirements.
Date Issued
2011-11-10
Date Acceptance
2011-10-29
Citation
Journal of Instrumentation, 2011, 6
URI
DOI
ISSN
1748-0221
Publisher
IOP Publishing
Journal / Book Title
Journal of Instrumentation
Volume
6
Copyright Statement
© 2011 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Journal of Instrumentation. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at http://dx.doi.org/10.1088/1748-0221/6/11/P11004.
Sponsor
Particle Physics and Astronomy Research Council (PPARC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Grant Number
PP/E006841/1
ST/I006137/1
ST/K001604/1
Subjects
Science & Technology
Technology
Instruments & Instrumentation
INSTRUMENTS & INSTRUMENTATION
Data processing methods
Analysis and statistical methods
Data reduction methods
DARK-MATTER DETECTOR
DESIGN
Nuclear & Particles Physics
Publication Status
Published
Article Number
P11004