Results from a Calibration of XENON100 Using a Source of Dissolved Radon-220
Abstract
A Rn-220 source is deployed on the XENON100 dark matter detector in order to address the challenges in calibration of tonne-scale liquid noble element detectors. We show that the Pb-212 beta emission can be used for low-energy electronic recoil calibration in searches for dark matter. The isotope spreads throughout the entire active region of the detector, and its activity naturally decays below background level within a week after the source is closed. We find no increase in the activity of the troublesome Rn-222 background after calibration. Alpha emitters are also distributed throughout the detector and facilitate calibration of its response to Rn-222. Using the delayed coincidence of Rn-220/Po-216, we map for the first time the convective motion of particles in the XENON100 detector. Additionally, we make a competitive measurement of the half-life of Po-212, t = 293.9+-(1.0)+-(0.6) ns.
Keywords
Cite
@article{arxiv.1611.03585,
title = {Results from a Calibration of XENON100 Using a Source of Dissolved Radon-220},
author = {The XENON Collaboration and E. Aprile and J. Aalbers and F. Agostini and M. Alfonsi and F. D. Amaro and M. Anthony and F. Arneodo and P. Barrow and L. Baudis and B. Bauermeister and M. L. Benabderrahmane and T. Berger and P. A. Breur and A. Brown and E. Brown and S. Bruenner and G. Bruno and R. Budnik and L. Butikofer and J. Calven and J. M. R. Cardoso and M. Cervantes and D. Cichon and D. Coderre and A. P. Colijn and J. Conrad and J. P. Cussonneau and M. P. Decowski and P. dePerio and P. DiGangi and A. DiGiovanni and S. Diglio and E. Duchovni and G. Eurin and J. Fei and A. D. Ferella and A. Fieguth and D. Franco and W. Fulgione and A. Gallo Rosso and M. Galloway and F. Gao and M. Garbini and C. Geis and L. W. Goetzke and L. Grandi and Z. Greene and C. Grignon and C. Hasterok and E. Hogenbirk and R. Itay and B. Kaminsky and G. Kessler and A. Kish and H. Landsman and R. F. Lang and D. Lellouch and L. Levinson and M. LeCalloch and Q. Lin and S. Lindemann and M. Lindner and J. A. M. Lopes and A. Manfredini and I. Maris and T. Marrodan Undagoitia and J. Masbou and F. V. Massoli and D. Masson and D. Mayani and Y. Meng and M. Messina and K. Micheneau and B. Miguez and A. Molinario and M. Murra and J. Naganoma and K. Ni and U. Oberlack and S. E. A. Orrigo and P. Pakarha and B. Pelssers and R. Persiani and F. Piastra and J. Pienaar and M. -C. Piro and G. P lante and N. Priel and L. Rauch and S. Reichard and C. Reuter and A. Rizzo and S. Rosendahl and N. Rupp and R. Saldanha and J. M. F. dosSantos and G. Sartorelli and M. Scheibelhut and S. Schindler and J. Schreiner and M. Schumann and L. Scotto Lavina and M. Selvi and P. Shagin and E. Shockley and M. Silva and H. Simgen and M. v. Sivers and A. Stein and D. Thers and A. Tiseni and G. Trinchero and C. Tunnell and N. Upole and H. Wang and Y. Wei and C. Weinheimer and J. Wulf and J. Ye and Y. Zhang},
journal= {arXiv preprint arXiv:1611.03585},
year = {2017}
}