학술논문
Development of a Quality Assurance Process for the SoLid Experiment
Document Type
Working Paper
Author
Abreu, Y.; Amhis, Y.; Ban, G.; Beaumont, W.; Binet, S.; Bongrand, M.; Boursette, D.; Castle, B. C.; Chanal, H.; Clark, K.; Coupé, B.; Crochet, P.; Cussans, D.; De Roeck, A.; Durand, D.; Fallot, M.; Ghys, L.; Giot, L.; Graves, K.; Guillon, B.; Henaff, D.; Hosseini, B.; Ihantola, S.; Jenzer, S.; Kalcheva, S.; Kalousis, L. N.; Labare, M.; Lehaut, G.; Manley, S.; Manzanillas, L.; Mermans, J.; Michiels, I.; Monteil, S.; Moortgat, C.; Newbold, D.; Park, J.; Pestel, V.; Petridis, K.; Piñera, I.; Popescu, L.; Ryckbosch, D.; Ryder, N.; Saunders, D.; Schune, M. -H.; Settimo, M.; Simard, L.; Vacheret, A.; Vandierendonck, G.; Van Dyck, S.; Van Mulders, P.; van Remortel, N.; Vercaemer, S.; Verstraeten, M.; Viaud, B.; Weber, A.; Yermia, F.
Source
JINST 14 (2019) no.02, P02014
Subject
Language
Abstract
The SoLid experiment has been designed to search for an oscillation pattern induced by a light sterile neutrino state, utilising the BR2 reactor of SCK$\bullet$CEN, in Belgium. The detector leverages a new hybrid technology, utilising two distinct scintillators in a cubic array, creating a highly segmented detector volume. A combination of 5 cm cubic polyvinyltoluene cells, with $^6$LiF:ZnS(Ag) sheets on two faces of each cube, facilitate reconstruction of the neutrino signals. % The polyvinyltoluene scintillator is used as an $\overline{\nu}_e$ target for the inverse beta decay of ($\overline{\nu}_e + p \rightarrow e^{+}+n$), with the $^6$LiF:ZnS(Ag) sheets used for associated neutron detection. Scintillation signals are read out by a network of wavelength shifting fibres connected to multipixel photon counters. Whilst the high granularity provides a powerful toolset to discriminate backgrounds; by itself the segmentation also represents a challenge in terms of homogeneity and calibration, for a consistent detector response. The search for this light sterile neutrino implies a sensitivity to distortions of around $\mathcal{O}$(10)\% in the energy spectrum of reactor $\overline{\nu}_e$. Hence, a very good neutron detection efficiency, light yield and homogeneous detector response are critical for data validation. The minimal requirements for the SoLid physics program are a light yield and a neutron detection efficiency larger than 40 PA/MeV/cube and 50 \% respectively. In order to guarantee these minimal requirements, the collaboration developed a rigorous quality assurance process for all 12800 cubic cells of the detector. To carry out the quality assurance process, an automated calibration system called CALIPSO was designed and constructed.
Comment: Submitted to JINST
Comment: Submitted to JINST