The Wavelength-shifting Optical Module (WOM) for the IceCube Upgrade. (arXiv:2107.10194v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Rack_Helleis_J/0/1/0/all/0/1">John Rack-Helleis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pollmann_A/0/1/0/all/0/1">Anna Pollmann</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rongen_M/0/1/0/all/0/1">Martin Rongen</a> (for the IceCube Collaboration)

The Wavelength-shifting Optical Module (WOM) is a novel optical sensor that
uses wavelength shifting and light guiding to substantially enhance the
photosensitive area of UV optical modules. It has been designed for the IceCube
Upgrade, a seven-string extension of the IceCube detector planned for the
2022/2023 South Pole deployment season. The WOM consists of a hollow quartz
cylinder coated in wavelength shifting paint which serves as detection area and
has two photomultipliers (PMTs) attached to the end faces. The light-collecting
tube increases the effective photocathode area of the PMTs without producing
additional dark current, making it suitable for low-signal, low-noise
applications. We report on the design and performance of the WOM with a focus
on the 12 modules in production for deployment in the IceCube Upgrade. While
the WOM will be deployed in IceCube, its design is applicable to any
large-volume particle detector based on the detection of Cherenkov light.

The Wavelength-shifting Optical Module (WOM) is a novel optical sensor that
uses wavelength shifting and light guiding to substantially enhance the
photosensitive area of UV optical modules. It has been designed for the IceCube
Upgrade, a seven-string extension of the IceCube detector planned for the
2022/2023 South Pole deployment season. The WOM consists of a hollow quartz
cylinder coated in wavelength shifting paint which serves as detection area and
has two photomultipliers (PMTs) attached to the end faces. The light-collecting
tube increases the effective photocathode area of the PMTs without producing
additional dark current, making it suitable for low-signal, low-noise
applications. We report on the design and performance of the WOM with a focus
on the 12 modules in production for deployment in the IceCube Upgrade. While
the WOM will be deployed in IceCube, its design is applicable to any
large-volume particle detector based on the detection of Cherenkov light.

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