English

Commissioning of a dual-phase xenon TPC at Nikhef

Instrumentation and Detectors 2016-11-23 v2 High Energy Physics - Experiment

Abstract

A dual-phase xenon time-projection chamber was built at Nikhef in Amsterdam as a direct dark matter detection R&D facility. In this paper, the setup is presented and the first results from a calibration with a 22^{22}Na gamma-ray source are presented. The results show an average light yield of (5.6 ±\pm 0.3) photoelectrons/keV (calculated to 122 keV and zero field) and an electron lifetime of (429 ±\pm 26) μ\mus. The best energy resolution σE/E\sigma_E/E is (5.8 ±\pm 0.2)% at an energy of 511 keV. This was achieved using a combination of the scintillation and the ionization signals. A photomultiplier tube gain calibration technique, based on the electroluminescence signals occurring from isolated electrons, is presented and its advantages and limitations are discussed.

Keywords

Cite

@article{arxiv.1602.01974,
  title  = {Commissioning of a dual-phase xenon TPC at Nikhef},
  author = {E. Hogenbirk and J. Aalbers and M. Bader and P. A. Breur and A. Brown and M. P. Decowski and C. Tunnell and R. Walet and A. P. Colijn},
  journal= {arXiv preprint arXiv:1602.01974},
  year   = {2016}
}

Comments

14 pages, 17 figures