Conveners
Radio: Session 1
- Allan Hallgren (Uppsala Universitet)
Radio: Session 2
- Allan Hallgren (Uppsala Universitet)
Description
Zoom Info:
Web Link: https://wipac-science.zoom.us/j/94992271249?pwd=V0tXeVhnNEtVSHdCNTlJUWQxTFBrQT09
Meeting ID: 949 9227 1249
Passcode: 044854
I'll give a brief introduction for the workshop day on calibration of the IceCube Gen2 in-ice radio array for detection of neutrinos
In this talk, we will present the Chiba group’s effort to developing an in-ice radio antenna model and slim antenna design for the future detector. We present the overview of the results from in-air antenna measurement done at the anechoic chamber and in-situ calibration performed at the ARA detector to measure the angular gain pattern of the antenna. The response of antenna in both...
Current understanding of RF ice properties will be summarized, highlighting both anomalous experimental data and/or gaps in our current modeling.
We address radio array calibration options for IceCube Gen2, as well as RNO-G efforts that will inform the IC Gen2 dedicated pulser layout and design. We also discuss a calibration-tower+hole (CATH) proposal to redundantly measure ice properties over neutrino-like geometries, as well as provide signal averaging to elucidate weak RF ice features.
In this talk, I will introduce potential passive sources (i.e. ones that operate without any intervention from us) that might be useful for calibration of a radio array. Such sources include satellites, radiosondes as well as potentially airplanes and snowmobiles.
Calibration of the IceCube-Gen2 radio array requires calibrations of the RF channels of stations, and constraining effects from the ice surrounding the channels. Regarding RF channel calibration, experience with ARA and ARIANNA has demonstrated the utility of fixed heartbeat calibration pulse units that probe RF channel response from a fixed location over time. Heartbeat units are operated...
The radio array design of IceCube-Gen2 relies on an understanding of the propagation of Askaryan radiation from UHE neutrino signals through the South Pole firn. Classical ray-tracing techniques are implemented in our standard Monte Carlo package, NuRadioMC, to solve the problem of arrival angle and location of surface signals that have curved paths through a changing index of refraction. ...
This talk covers two topics related to "advanced" radio propagation (i.e. not raytracing). The first describes the use of finite-difference time-domain (FDTD) modeling to describe a radio dataset from Greenland and the second describes the potential application of parabolic equation (PE) modeling for in-ice studies. Unlike FDTD, PE is tractable over larger scales, but still leaves much to be...
I will discuss the process used to calibrate the antennas at ARA Station 5, as well as the relative uncertainties introduced in the process. I will also discuss my recommendations for calibrating future in-ice radio detectors using lessons learned from ARA Station 5.
High-precision neutrino energy reconstruction requires a real time monitoring of the firn properties (snow accumulation h and the index-of-refraction profile n(z)). In this talk, I will present a design for an in-situ calibration device applicable to an IceCube-Gen2 radio array, consisting of two shallow emitter antennas and a receiver at 15m depth. The optimal configuration of the emitters,...
In this short overview, we outline the primary challenges, remaining questions, and suggested recommendations for calibration activities associated with ice properties, antenna calibration, channel calibration, and system calibration. In addition to dedicated devices, some important calibration requirements can be met by external sources such as cosmic rays.
Description of the test and calibration procedure for the hardware of the radio neutrino detector RNO-G: the three types of amplifier boards, which will be used in the detector, were tested with a vector network analyzer and in a temperature chamber.
We give an overview of the current state of the simulation of radio signals from air showers measured by in-ice radio antennas. We start with a short summary about the propagation of in-air radio emission into ice, and then focus on the propagation of the particle shower itself through ice. The Corsika Monte Carlo code was used to simulate the in-air part of air showers, which was combined...
We will review calibration efforts as performed in radio air shower arrays (such as AERA and LOFAR) and will discuss what we can learn from this for Gen2.
In this short overview, we outline the primary challenges, remaining questions, and suggested recommendations for calibration activities associated with ice properties, antenna calibration, channel calibration, and system calibration. In addition to dedicated devices, some important calibration requirements can be met by external sources such as cosmic rays.
