期刊
JOURNAL OF INSTRUMENTATION
卷 6, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1748-0221/6/11/P11004
关键词
Data processing methods; Analysis and statistical methods; Data reduction methods
资金
- Science & Technology Facilities Council (STFC)
- Russian Foundation of Basic Research [08-02-91851 KO a]
- Royal Society
- Fundacao para a Ciencia e Tecnologia (FCT) [CERN/FP/109320/2009, CERN/FP/116374/2010, SFRH/BPD/27054/2006, SFRH/BPD/47320/2008, SFRH/BPD/63096/2009]
- SC Rosatom [H.4e.45.90.11.1059]
- Science and Technology Facilities Council [ST/I006161/1, PP/E006841/1, ST/I006137/1] Funding Source: researchfish
- STFC [ST/I006161/1, PP/E006841/1, ST/I006137/1] Funding Source: UKRI
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/63096/2009, SFRH/BPD/47320/2008, SFRH/BPD/27054/2006, CERN/FP/116374/2010, CERN/FP/109320/2009] Funding Source: FCT
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.
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