ZE3RA: The ZEPLIN-III Reduction and Analysis Package
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 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.
Cite
@article{arxiv.1106.0808,
title = {ZE3RA: The ZEPLIN-III Reduction and Analysis Package},
author = {F. Neves and D. Yu. Akimov and H. M. Araújo and E. J. Barnes and V. A. Belov and A. A. Burenkov and V. Chepel and A. Currie and L. DeViveiros and B. Edwards and C. Ghag and A. Hollingsworth and M. Horn and G. E. Kalmus and A. S. Kobyakin and A. G. Kovalenko and V. N. Lebedenko and A. Lindote and M. I. Lopes and R. Lüscher and P. Majewski and A. St J. Murphy and S. M. Paling and J. Pinto da Cunha and R. Preece and J. J. Quenby and L. Reichhart and S. Rodrigues and P. R. Scovell and C. Silva and V. N. Solovov and N. J. T. Smith and P. F. Smith and V. N. Stekhanov and T. J. Sumner and C. Thorne and R. J. Walker},
journal= {arXiv preprint arXiv:1106.0808},
year = {2015}
}