1. Measurement of the distribution of 207Bi depositions on calibration sources for SuperNEMO
- Author
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Arnold, R, Augier, C, Barabash, AS, Basharina-Freshville, A, Birdsall, E, Blondel, S, Bongrand, M, Boursette, D, Breier, R, Brudanin, V, Busto, J, Calvez, S, Cerna, C, Cesar, JP, Ceschia, M, Chapon, A, Chauveau, E, Chopra, A, Dawson, L, Capua, SD, Duchesneau, D, Durand, D, Eurin, G, Evans, JJ, Filosofov, D, Flack, R, Franchini, P, Girard-Carillo, C, Gómez, H, Guillon, B, Guzowski, P, Hoballah, M, Hodák, R, Hussain, MH, Jeremie, A, Jullian, S, Kaizer, J, Klimenko, A, Kochetov, O, Konovalov, SI, Kovalenko, V, Lalanne, D, Lang, K, Lemière, Y, Noblet, TL, Liptak, Z, Liu, XR, Loaiza, P, Macko, M, Macolino, C, Marquet, C, Mauger, F, Minotti, A, Mora, Y, Morgan, B, Mott, J, Nemchenok, I, Nomachi, M, Nova, F, Nowacki, F, Ohsumi, H, Oliviéro, G, Pahlka, RB, Palušová, V, Patrick, C, Perrot, F, Pin, A, Piquemal, F, Povinec, P, Proga, M, Quinn, WS, Ramachers, YA, Remoto, A, Reyss, JL, Saakyan, R, Salamatin, A, Salazar, R, Sarazin, X, Sedgbeer, J, Shitov, Y, Simard, L, Šimkovic, F, Smolnikov, A, Söldner-Rembold, S, Štekl, I, Suhonen, J, Sutton, CS, Szklarz, G, Tedjditi, H, Thomas, J, Timkin, V, Torre, S, Tretyak, VI, Umatov, VI, Vilela, C, Vorobel, V, Waters, D, Xie, F, and Žemlička, J
- Subjects
physics.ins-det - Abstract
The SuperNEMO experiment will search for neutrinoless double-beta decay ($0\nu\beta\beta$), and study the Standard-Model double-beta decay process ($2\nu\beta\beta$). The SuperNEMO technology can measure the energy of each of the electrons produced in a double-beta ($\beta\beta$) decay, and can reconstruct the topology of their individual tracks. The study of the double-beta decay spectrum requires very accurate energy calibration to be carried out periodically. The SuperNEMO Demonstrator Module will be calibrated using 42 calibration sources, each consisting of a droplet of $^{207}$Bi within a frame assembly. The quality of these sources, which depends upon the entire $^{207}$Bi droplet being contained within the frame, is key for correctly calibrating SuperNEMO's energy response. In this paper, we present a novel method for precisely measuring the exact geometry of the deposition of $^{207}$Bi droplets within the frames, using Timepix pixel detectors. We studied 49 different sources and selected 42 high-quality sources with the most central source positioning.
- Published
- 2021