Can cable shadows be done?

[fiedl]

Can the new simulation code be used to simulate other objects like cables? A cable would be implemented as cylinder with an absorption length of 0, i.e. instant absorption.

Image source: https://gallery.icecube.wisc.edu/internal/v/GraphicRe/graphics/arraygraphics2011/sketchup/DOMCloseUp.jpg.html, Jamie Yang

Image source: https://arxiv.org/abs/1612.05093, The IceCube Neutrino Observatory: Instrumentation and Online Systems, 2017

[fiedl]

Cable shadow test.

[2018-02-28 13:06:22] fiedl@fiedl-mbp ~/hole-ice-study/scripts/FiringRange master ⚡
▶ rm tmp/gcd_with_hole_ice.i3
▶ ./run.rb --scattering-factor=1.0 --absorption-factor=0.0 --distance=1.0 \
    --number-of-photons=1e2 --angle=90 --plane-wave \
    --number-of-runs=1 --number-of-parallel-runs=1 \
    --save-photon-paths --cpu
▶ steamshovel tmp/propagated_photons.i3

[fiedl]

# scripts/FiringRange/run.rb
# ...

detector_geometry_options = {
  gcd_file: "$I3_TESTDATA/sim/GeoCalibDetectorStatus_IC86.55380_corrected.i3.gz",
  ice_model_file: "$I3_SRC/clsim/resources/ice/spice_mie",
  hole_ice_cylinder_positions: [
    # For the z-ranges, see: https://github.com/fiedl/hole-ice-study/issues/34
    [-256.02301025390625 + options[:cylinder_shift].to_f, -521.281982421875, 0],  # bubble column of the hole ice
    [-256.02301025390625 + dom_radius + 0.02, -521.281982421875, 500.0],          # cable
  ],
  hole_ice_cylinder_radii: [
    0.08,
    0.02
  ]
}

[fiedl]

After implementing a simplified z-range (#34), a first cable shadow test is possible:

Angular scan:

[2018-03-08 08:58:36] fiedl@wgs16 /afs/ifh.de/group/amanda/scratch/fiedl/hole-ice-study/scripts/AngularAcceptance master ⚡
▶ qsub -l gpu -l tmpdir_size=10G -l s_rt=2:30:00 -l h_rss=2G -m ae batch-job.sh --scattering-factor=1.0 --absorption-factor=0.0 --distance=1.0 --number-of-photons=1e5 --number-of-runs=2 --number-of-parallel-runs=2 --plane-wave --angles=0,10,20,30,40,50,60,70,90,120,140,150,160,170,190,200,210,220,240,260,270,290,300,310,320,330,340,350

[2018-03-08 10:28:47] fiedl@fiedl-mbp ~/hole-ice-study/scripts/AngularAcceptance master ⚡
▶ lib/plot.rb --nominal ~/zeuthen/hole-ice-study/scripts/AngularAcceptance/cluster-results

Visualization of photons being absorbed by the cable cylinder:

[fiedl]

How does the cable look like in real life?

Source: https://icecube.wisc.edu/gallery/view/153