Arnold, R;
Augier, C;
Barabash, AS;
Basharina-Freshville, A;
Birdsall, E;
Blondel, S;
Bongrand, M;
... Žemlička, J; + view all
(2021)
Measurement of the distribution of ^207Bi depositions on calibration sources for SuperNEMO.
Journal of Instrumentation
, 16
(7)
, Article T07012. 10.1088/1748-0221/16/07/T07012.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Measurement of the distribution of ^207Bi depositions on calibration sources for SuperNEMO |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1748-0221/16/07/T07012 |
| Publisher version: | https://doi.org/10.1088/1748-0221/16/07/T07012 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10135270 |
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