Position Reconstruction in a Dual Phase Xenon Scintillation Detector
Abstract
We studied the application of statistical reconstruction algorithms, namely maximum likelihood and least squares methods, to the problem of event reconstruction in a dual phase liquid xenon detector. An iterative method was developed for in-situ reconstruction of the PMT light response functions from calibration data taken with an uncollimated gamma-ray source. Using the techniques described, the performance of the ZEPLIN-III dark matter detector was studied for 122 keV gamma-rays. For the inner part of the detector (R<100 mm), spatial resolutions of 13 mm and 1.6 mm FWHM were measured in the horizontal plane for primary and secondary scintillation, respectively. An energy resolution of 8.1% FWHM was achieved at that energy. The possibility of using this technique for improving performance and reducing cost of scintillation cameras for medical applications is currently under study.
Keywords
Cite
@article{arxiv.1112.1481,
title = {Position Reconstruction in a Dual Phase Xenon Scintillation Detector},
author = {V. N. Solovov and V. A. Belov and D. Yu. Akimov and H. M. Araújo and E. J. Barnes 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 F. Neves and S. M. Paling and J. Pinto da Cunha and R. Preece and J. J. Quenby and L. Reichhart and P. R. Scovell and C. Silva 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:1112.1481},
year = {2015}
}
Comments
8 pages, 7 figures, in the Conference Record of IEEE NSS 2011, accepted for publication in IEEE Trans. on Nuc. Sci