Measuring the Attenuation Length of Water in the CHIPS-M Water Cherenkov Detector

F. Amat (1) , P. Bizouard (1) , J. Bryant , T.J. Carroll , S. de Rijck , S. Germani , T. Joyce , B. Kriesten , M. Marshak , J. Meier , J.K. Nelson , A.J. Perch , M.M. Pfützner , R. Salazar , J. Thomas , J. Trokan-Tenorio , P. Vahle , R. Wade , C. Wendt , L. Whitehead , M. Whitney

1 AMU - Aix Marseille Université

The water at the proposed site of the CHIPS water Cherenkov detector has been studied to measure its attenuation length for Cherenkov light as a function of filtering time. A scaled model of the CHIPS detector filled with water from the Wentworth 2W pit, proposed site of the CHIPS deployment, in conjunction with a 3.2 m vertical column filled with this water, was used to study the transmission of 405 nm laser light. Results consistent with attenuation lengths of up to 100 m were observed for this wavelength with filtration and UV sterilization alone.

Mots clés: Water; Attenuation; Neutrino; Cherenkov; Detector; Filtration; Absorption; attenuation: length; Cherenkov counter: water; laser; radiation: Cherenkov; water: transparency

Domaines: Instrumentations et Détecteurs [physics.ins-det]

F. Amat, P. Bizouard, J. Bryant, T.J. Carroll, S. de Rijck, et al.. Measuring the Attenuation Length of Water in the CHIPS-M Water Cherenkov Detector. Nucl.Instrum.Meth.A, 2017, 844, pp.108-115. ⟨10.1016/j.nima.2016.11.032⟩. ⟨hal-01554391⟩