Calibration LEDs in the IceCube Upgrade D-Egg Modules
Aya Ishihara, Ayumi Kiriki (for the IceCube Collaboration)

TL;DR
This paper discusses the calibration of optical sensors in IceCube Upgrade modules, focusing on measuring the optical properties of refrozen ice using LED calibration systems to improve neutrino detection accuracy.
Contribution
It introduces a simulation method for calibrating the hole ice properties in IceCube modules using LED systems, enhancing neutrino reconstruction accuracy.
Findings
Calibration method accurately recovers hole ice properties
Simulation results match Monte Carlo truth
Improves understanding of ice optical properties
Abstract
The IceCube Upgrade, planned for deployment in the 2022/2023 South Pole Summer, will involve deployment of a greater density of optical modules (vertically spaced ~3 m). Improvements in the calibration of optical sensors and an enhanced understanding of the optical properties of the deep glacial ice, due to the more closely-spaced modules, are projected to have a large impact on neutrino reconstruction. A new optical sensor module called the "Dual optical sensors in an Ellipsoid glass for Gen2" (D-Egg), is planned for installation in both the IceCube Upgrade and IceCube-Gen2, and has both an upward and downward facing 8" high quantum efficiency PMT. The D-Egg modules will make use of a downward-facing LED calibration system to measure the optical properties of the refrozen drill holes ("hole ice"). An inner section of the hole ice contains some impurities, which modify the optical…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Neutrino Physics Research
