Dortmund DPG Conference 2021-03-15

https://www.dpg-verhandlungen.de/year/2021/conference/dortmund/part/t/session/22/contribution/2

Hole Ice, Cables, and Non-Spherical Detector Modules in Light-Propagation Simulations for the IceCube Experiment — •Sebastian Fiedlschuster for the IceCube collaboration — Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91054 Erlangen

IceCube is a neutrino observatory located at Earth’s South Pole that uses glacial ice as detector medium where particles from neutrino interactions produce Cherenkov light as they move through the ice. The light is then detected by an array of photo detectors deployed within the ice.

Aiming to improve detector calibration for the current IceCube detector as well as for the upcoming detector upgrade, a modified ray-tracing algorithm based on IceCube photon-propagation software is used to account for regions of different optical properties in light-propagation simulations. Of particular interest are the drill-hole regions (hole ice) of the detector medium, opaque cables of the detector instrumentation as well as light-sensitive detector modules of different shapes. This talk will outline the simulation method and present current and future applications.

Current project status, open software questions, Erlangen-Münster Call 2019-04-04

Goal

Bring the new hole-ice simulation into the icecube-simulation framework such that other icecubers can use it.

Overview

• Compile IceSim V06-01-01 with Python 3
• ⇒ Port hole-ice code to clsim of icecube-simulation V06-01-01
• Provide example scripts for Python 3
• Implement missing features
• Merge hole-ice code into clsim trunk

Key points and questions

• Reproducible install instructions: Vagrant, Travis-CI, Build-Bots
  • Q: Does anyone know about icecube’s build bots? Where are the build scripts? Why didn’t they indicate that V06-01-01 does not compile on macOS Sierra?
• After the next release, support for Python 2 will be dropped in the icecube framework.
  • If you find something that doesn’t work with Python 3 right now, please report the issue: In the #software slack channel https://icecube-spno.slack.com/messages/C02KQL9KN
    or in the bug tracker: https://code.icecube.wisc.edu/projects/icecube/newticket
• How to merge the hole-ice code into trunk? Git merge vs. SVN merge vs. Rebase.
  • Keep original commits D, E, because there are links pointing to those commits.
  • Can see in the graph whether those commits are in trunk or a specific release.

Aachen DPG Conference 2019-03-25

https://www.dpg-verhandlungen.de/year/2019/conference/aachen/part/t/session/11/contribution/10

Simulation of Light Propagation Through Hole Ice for the IceCube Experiment — •Sebastian Fiedlschuster for the IceCube collaboration — Friedrich-Alexander-Universität Erlangen-Nürnberg, ECAP, Erwin-Rommel-Str. 1, 91058 Erlangen

IceCube is a neutrino observatory at Earth’s South Pole that uses glacial ice as detector medium where particles from neutrino interactions produce Cherenkov light as they move through the ice, which then is detected by an array of photo detectors deployed within the ice. Hole ice is the refrozen water in the drill holes that were needed to deploy the detector modules.

Aiming to improve the detector calibration for the current IceCube detector as well as for the upcoming upgrade, a new method to simulate the propagation of light through the hole ice has been introduced. The new method allows a ray-tracing simulation of light through ice volumes of different optical properties, such as one or several hole-ice cylinders with specific positions, sizes, scattering lengths and absorption lengths. The effect of shadowing cables can be studied by modeling cables as opaque volumes. This talk will outline the simulation method and present current results.

Current project status, ECAP-IceCube Meeting 2019-03-14

Goal: Bring the new hole-ice simulation into the icecube-simulation framework such that other icecubers can use it.

• Compile IceSim V06-01-01 with Python 3
• ⇒ Port hole-ice code to clsim of icecube-simulation V06-01-01
• Provide example scripts for Python 3
• Implement missing features
• Merge hole-ice code into clsim trunk

Calibration-Call Talk 2018-11-09

• Direct hole-ice simulations with Upgrade-like geometry,
  fiedl/hole-ice-study#117, with more statistics and stronger hole ice.
• Next step: More realistic simulation scenario,
  fiedl/hole-ice-study#118

Updated Calibration-Call Talk 2018-10-19: More statistics and effective scattering length

Direct hole-ice simulations with Upgrade-like geometry

fiedl/hole-ice-study#117

These slides have plots with more statistics: 1e7 rather than 1e6 photons per angle. Also, these simulations use the effective rather than the geometric scattering length as input with the same numbers, making the hole-ice effects more prominent.

New video:
https://youtu.be/Wiu8CpVQn14

Calibration-Call Talk 2018-10-19

Direct hole-ice simulations with Upgrade-like geometry

fiedl/hole-ice-study#117

Summer Blot, DESY
Sebastian Fiedlschuster, ECAP

Stockholm Collaboration Meeting 2018-09-27 Systematics Session 2

v1.3

export pdf for Stockholm meeting systematics session

Stockholm Collaboration Meeting 2018-09-26: Calibration Session 1

v1.2

compile pdf: calibration-1 session stockholm

Calibration-Call Talk 2018-03-02

v1.0

Calibration-Call Talk 2018-03-02