Measurement of the distribution of ^207Bi depositions on calibration sources for SuperNEMO

The SuperNEMO experiment will search for neutrinoless double-beta decay (0νββ), and study the Standard-Model double-beta decay process (2νββ). The SuperNEMO technology can measure the energy of each of the electrons produced in a double-beta (ββ) decay, and can reconstruct the topology of their indi...

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Veröffentlicht in:	JINST 2021-07, Vol.16 (7), p.T07012
Hauptverfasser:	Arnold, R., Augier, C., Barabash, A.S., Basharina-Freshville, A., Birdsall, E., Blondel, S., Bongrand, M., Boursette, D., Breier, R., Brudanin, V., Busto, J., Calvez, S., Cerna, C., Cesar, J.P., Ceschia, M., Chapon, A., Chauveau, E., Chopra, A., Dawson, L., De Capua, S., Duchesneau, D., Durand, D., Eurin, G., Evans, J.J., Filosofov, D., Flack, R., Franchini, P., Girard-Carillo, C., Gómez, H., Guillon, B., Guzowski, P., Hoballah, M., Hodák, R., Hussain, M.H., Jeremie, A., Jullian, S., Kaizer, J., Klimenko, A., Kochetov, O., Konovalov, S.I., Kovalenko, V., Lalanne, D., Lang, K., Lemière, Y., Le Noblet, T., Liptak, Z., Liu, X.R., 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, R.B., Palušová, V., Patrick, C., Perrot, F., Pin, A., Piquemal, F., Povinec, P., Proga, M., Quinn, W.S., Ramachers, Y.A., Remoto, A., Reyss, J.L., Saakyan, R., Salamatin, A., Salazar, R., Sarazin, X., Sedgbeer, J., Shitov, Yu, Simard, L., Šimkovic, F., Smolnikov, A., Söldner-Rembold, S., Štekl, I., Suhonen, J., Sutton, C.S., Szklarz, G., Tedjditi, H., Thomas, J., Timkin, V., Torre, S., Tretyak, Vl.I., Tretyak, V.I., Umatov, V.I., Vilela, C., Vorobel, V., Waters, D., Xie, F., Žemlička, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Beta decay Bismuth isotopes Calibration Detector alignment and calibration methods (lasers, sources, particle-beams) Double-beta decay detectors Droplets Instrumentation and Detectors Physics Topology
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Beschreibung
Zusammenfassung:	The SuperNEMO experiment will search for neutrinoless double-beta decay (0νββ), and study the Standard-Model double-beta decay process (2νββ). The SuperNEMO technology can measure the energy of each of the electrons produced in a double-beta (ββ) 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 207Bi within a frame assembly. The quality of these sources, which depends upon the entire ^207Bi 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 207Bi 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.
ISSN:	1748-0221 1748-0221
DOI:	10.1088/1748-0221/16/07/T07012