Sensitivity of the IceCube Upgrade to Atmospheric Neutrino Oscillations
P. Eller, Kayla Leonard DeHolton, Jan Weldert, Rasmus Ørsøe, Rasha Abbasi, M. Ackermann, Jenni Adams, Sanjib Kumar Agarwalla, Juanan Aguilar, M. Ahlers, Jean-Marco Alameddine, Najia Moureen Binte Amin, K. Andeen, G. Anton, C. Argüelles, Yosuke Ashida, Sofia Athanasiadou, Spencer Axani, X. Bai, Aswathi Balagopal, Moreno Baricevic, S. W. Barwick, Vedant Basu, Ryan Bay, J. J. Beatty, J. Becker Tjus, Jakob Beise, Chiara Bellenghi, Charlotte Benning, S. BenZvi, D. Berley, E. Bernardini, D. Besson, E. Blaufuss, Summer Blot, Federico Bontempo, Julia Book, Caterina Boscolo Meneguolo, Sebastian BOSER, O. Botner, J. Böttcher, Etienne Bourbeau, Jim Braun, Bennett Brinson, Jannes Brostean-Kaiser, Ryan T. Burley, Raffaela Busse, Delaney Butterfield, Michael Campana, Kiara Carloni, Erin Carnie-Bronca, Sharmistha Chattopadhyay, Thien Nhan Chau, Chujie Chen, Zheyang Chen, D. Chirkin, Seowon Choi, Brian Clark, Lew Classen, Alan Coleman, Gabriel Collin, A. Connolly, J. M. Conrad, Paul Coppin, Pablo Correa, D. F. Cowen, Pranav Dave, C. De Clercq, James DeLaunay, Diyaselis Delgado Lopez, Shuyang Deng, Kunal Deoskar, Abhishek Desai, P. Desiati, K. D. de Vries, G. de Wasseige, T. DeYoung, A. Diaz, J. C. Díaz–Vélez, Markus Dittmer, Alba Domi, Hrvoje Dujmović, M. A. DuVernois, Thomas Ehrhardt, Enrico Ellinger, Sharif El Mentawi, Dominik Elsässer, Ralph Engel, Hannah Erpenbeck, John Evans, P. A. Evenson, Kwok Lung Fan, Ke Fang, Kareem Ramadan Farrag, A. R. Fazely, Anatoli Fedynitch, Nora Feigl, Sebastian Fiedlschuster, C. Finley, Leander Fischer
Abstract
IceCube DeepCore, the existing low-energy extension of the IceCube Neutrino Observatory, was designed to lower the neutrino detection energy threshold to the GeV range. A new extension, called the IceCube Upgrade, will consist of seven additional strings installed within the DeepCore fiducial volume. The new modules will have spacings of about 20 m horizontally and 3 m vertically, compared to about 40-70 m horizontally and 7 m vertically in DeepCore. It will be deployed in the polar season of 2025/26. This additional hardware features new types of optical modules with multi-PMT configurations, as well as calibration devices. This upgrade will more than triple the number of PMT channels with respect to current IceCube, and will significantly enhance its capabilities in the GeV energy range. However, the increased channel count also poses new computational challenges for the event simulation, selection, and reconstruction. In this contribution we present updated oscillation sensitivities based on the latest advancements in simulation, event selection, and reconstruction techniques.