Fabrication of thin planar radiopure foils with 82Se for the SuperNEMO Demonstrator
Instrumentation and Detectors
2025-09-12 v1 High Energy Physics - Experiment
Abstract
The SuperNEMO Demonstrator, designed to search for double beta decay using enriched 82Se, has been assembled in the Modane Underground Laboratory under the French Alps. Thin foils with radio - purified and enriched 82Se are installed centrally in the detector. A novel foil fabrication method has been developed, improving the radiopurity achieved in the previous generation experiment. It consists of wrapping standalone selenium pads in raw Mylar, combined with selenium purified by a new reverse-chromatography method. This paper describes the features of these foils, their fabrication process, the characterization results, and the integration of the foils into the SuperNEMO Demonstrator.
Keywords
Cite
@article{arxiv.2509.08931,
title = {Fabrication of thin planar radiopure foils with 82Se for the SuperNEMO Demonstrator},
author = {X. Aguerre and A. Barabash and A. Basharina-Freshville and M. Bongrand and Ch. Bourgeois and D. Breton and R. Breier and J. Busto and C. Cerna and J. Cesar and M. Ceschia and E. Chauveau and S. De Capua and D. Duchesneau and J. J. Evans and D. V. Filosofov and M. Granjon and M. Hoballah and R. Hodák and J. Horkley and A. Jeremie and S. Jullian and J. Kaizer and A. A. Klimenko and O. Kochetov and F. Koňařík and S. Konovalov and T. Křižák and A. Lahaie and K. Lang and Y. Lemière and T. Le Noblet and P. Li and P. Loaiza and J. Maalmi and M. Macko and F. Mamedov and C. Marquet and F. Mauger and A. Mendl and B. Morgan and I. Nemchenok and V. Palušová and C. Patrick and F. Perrot and M. Petro and F. Piquemal and P. Povinec and S. Pratt and M. Proga and W. S. Quinn and A. V. Rakhimov and Y. R amachers and A. Remoto and N. I. Rukhadze and R. Saakyan and R. Salazar and J. Sedgbeer and Y. Shitov and L. Simard and F. Šimkovic and A. A. Smolnikov and S. Söldner-Rembold and I. Štekl and J. Suhonen and H. Tedjditi and J. Thomas and V. Timkin and V. Tretyak and V. I. Tretyak and G. Turnbull and Y. Vereshchaka and G. Warot and D. Waters and V. Yumatov},
journal= {arXiv preprint arXiv:2509.08931},
year = {2025}
}
Comments
20 pages, 11 figures, 7 tables