Speaker
Dr
Vitaly Kudryavtsev
(University of Sheffield)
Description
The LZ experiment, featuring a 7-tonne active liquid xenon target, is aimed at achieving unprecedented sensitivity to WIMPs where the background in the nuclear recoil band is expected to be dominated by neutrinos. To reach this goal, extensive simulations are carried out to accurately calculate the electron recoil and nuclear recoil rates in LZ. Both internal and external backgrounds are considered. A very efficient suppression of background rate is achieved with an outer liquid scintillator veto, water Cherenkov detector, xenon skin and fiducialisation. Based on the current measurements of radioactivity of different materials, it is shown that we are on track to reduce the background from radioactivity for a WIMP search down to < 1 event in 1000 days for 5.6 tonne fiducial mass.
Primary author
Dr
Vitaly Kudryavtsev
(University of Sheffield)
