CERN Accelerating science

Article
Title Experimental setup for Weak Interaction Studies with Radioactive ion-beams WISArD
Author(s) Atanasov, D (CERN) ; Cresto, F (LPC, Caen) ; Nies, L (CERN) ; Pomorski, M (LP2I, Bordeaux) ; Versteegen, M (LP2I, Bordeaux) ; Alfaurt, P (LP2I, Bordeaux) ; Araujo-Escalona, V (Leuven U.) ; Ascher, P (LP2I, Bordeaux) ; Blank, B (LP2I, Bordeaux) ; Daudin, L (LP2I, Bordeaux) Pokaż wszystkich 30 autorów
Publication 2023
Number of pages 11
In: Nucl. Instrum. Methods Phys. Res., A 1050 (2023) 168159
DOI 10.1016/j.nima.2023.168159 (publication)
Subject category Detectors and Experimental Techniques
Abstract The article describes the commissioning and technical development of the Weak Interaction Studies with 32Ar Decay (WISArD) experiment, installed at the radioactive ion-beam facility ISOLDE/CERN. The experiment aims to extend the present limits on scalar and tensor currents in the weak interaction and hence search for physics beyond the Standard Model. The evaluation of these limits relies on measuring the proton energy in beta-delayed proton emission, sensitive to both the beta-neutrino angular correlation coefficient aβν and the Fierz interference term b. The method tries to improve previous studies by considering the positron-proton coincidences when determining the kinematic shift in the energy of the emitted protons. Using this coincidence technique, the aβν and b coefficients will be measured at the per mil level. Simulations were employed to optimize the ion beam transport efficiency and validate proof-of-principle results obtained in November 2018 (Nov2018). Upgrades are ongoing, and we are looking into improvements to the overall performance of the setup.
Copyright/License publication: © 2023-2024 The Author(s) (License: CC-BY-4.0)

Corresponding record in: Inspire


 Rekord stworzony 2023-03-25, ostatnia modyfikacja 2023-03-28


Pełny tekst:
Pobierz pełny tekst
PDF

  • Send to ScienceWise.info