High Energy Physics Seminars

Estimating the sensitivity of IceCube Gen-2 towards Cosmic Ray composition

by Dr. Manisha Lohan (DHEP, TIFR)

Monday, April 17, 2023 from to (Asia/Kolkata)
at TIFR, Mumbai ( AG-66 )
Description
IceCube Gen-2 is a proposed extension to the existing IceCube neutrino observatory, instrumenting ten times the volume of the present detector and to be operated with a proportionally larger surface array. We have studied the sensitivity of this future detector to the mass composition of primary cosmic rays using Corsika Monte Carlo simulations of air showers initiated by H, He, O, and Fe. IceCube Gen-2 will have mainly three components: a surface array, a radio array, and an optical array. The surface array will be composed of 120 hybrid stations: radio antennas and scintillators, the radio array of 200 stations will be made up of deeper and shallow radio antennas, and the optical array will comprise 120 optical strings encasing the digital optical modules (DOMs). IceCube/IceCube Gen-2 detects cosmic rays indirectly via the observation of particle cascades in the earth’s atmosphere. Investigating a set of variables for both the surface and optical arrays that will have the highest mass discrimination power. Among the various variables studied till now: the slope of the lateral distribution function, the number of muons at the surface as well as in-ice muons, the charge of in-ice pulse, the number of DOM hits; the number of muons are having the highest discrimination power. The talk will provide a current status of our sensitivity study.