Angular-acceptance scan for DARD parameters

[fiedl]

Background

DARD = Data Aquisition for a flasheR DOM

Idea: Turn on the flasher board LEDs in sequence. The LED which results in the strongest signal points in the direction of the hole-ice column as light is scattered back from the column. [1]

Image source: [1]

The data is compared to a detailed DOM simulation using Geant4.

Best values

Best fit value using a fixed hole-ice column radius of r=30cm in the simulation: geometric scattering length = 10cm Source: [2], slide 4

References

• [1] Rongen, Status and future of SpiceHD & DARD, Aug 2017
• [2] Rongen, DARD Update, Nov 2015

[fiedl]

Running an angular-acceptance simulation with these parameters:

[2018-08-08 01:07:29] fiedl@kepler16 /afs/ifh.de/group/amanda/scratch/fiedl/hole-ice-study/scripts/AngularAcceptance
▶ ./run.rb --cluster --hole-ice-scattering-length=0.10 --hole-ice-absorption-length=100.0 --hole-ice-radius=0.30 --distance=1.0 --number-of-photons=1e6 --plane-wave
▶ mv results/current ../../results/angular_acceptance_dard

[fiedl]

[2018-08-08 01:29:00] fiedl@fiedl-mbp ~/hole-ice-study/scripts/lib master ⚡
▶ ./convert_options_txt_to_json.rb ../../results/angular_acceptance_dard
▶ ./plot_angular_acceptance.py --dima-reference --h2-reference --hole-ice --plane-wave --direct-detection ../../results/angular_acceptance_dard