Study of accelerator neutrino detection at a spallation source

Abstract

In this paper, we study the detection of accelerator neutrinos produced at the China Spallation Neutron Source (CSNS). Using the code FLUKA, we have simulated the production of neutrinos in the proton beam on the tungsten target and obtained the yield efficiency, numerical flux, and average energy of different flavors of neutrinos. Furthermore, detections of these accelerator neutrinos are investigated in two reaction channels, the neutrino-electron reactions and neutrino-carbon reactions. The event numbers of different flavors of neutrinos have also been calculated.

CE$ν$NS Experiment Proposal at CSNS

“…CSNS is running with a beam power of 140kW now. According to a simulation implemented by FLUKA, the neutrino production rate is about 0.17/proton/ f lavor in CSNS [7]. Our detector is to be placed on a platform 8.2m right above the target.…”

Detection of supernova neutrinos at spallation neutron sources

“…For CSNS [11], a medium scale detector would be placed just below the ground surface about 50-60 meters from the spallation target. A spherical 803 tons fiducial mass of mineral oil (CH 2 , density 0.845 g/cm 3 ) has a fiducial radius of 6.1 m, occupying a volume of 950 m 3 .…”

“…As the exclusive spallation neutron source in developing countries, CSNS will be among the top four of such facilities in the world until completion. By using the code FLUKA, the processes of accelerator neutrinos production during the proton beam hitting on the tungsten target at CSNS were simulated, and the energy spectra of accelerator neutrinos were gained [11], as shown in Fig. 1(a).…”

“…accelerator neutrinos at CSNS (from Ref. [11]); (b) SN neutrinos on Earth. N (I) corresponds to the normal (inverted) mass hierarchy, and x = µ, τ .…”

“…In previous work, using the code FLUKA, the processes of accelerator neutrino production from the proton beam hitting the tungsten target at CSNS were simulated, and the energy spectra of accelerator neutrinos were obtained [11], as shown in Fig. 1(a).…”