Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 51: Experimentelle Methoden der Astroteilchenphysik III

T 51.3: Talk

Tuesday, March 10, 2015, 17:15–17:30, I.13.70 (HS 27)

Progress on the WOM (Wavelength-shifting optical module) development for IceCube — •Dustin Hebecker — DESY Zeuthen

For ongoing studies for the extension of the IceCube neutrino observatory to low energies (PINGU) and high energies the noise rate of the optical modules should be decreased and the effective area increased in order to improve energy resolution and overall sensitivity. The WOM (Wavelength-shifting optical module) targets this points by expanding the capture area while decreasing the size of the PMT and thus decreasing the noise rate. Photons are first captured in an organic wavelength-shifting material (WLS) that is coated on light guiding material to guide the light to two smaller PMTs. This allows to achieve a very large collection area and reduces the noise to the order of 10 Hz in comparison to 600-800 Hz (IceCube DOM). The progress on the necessary WLS paint development and substrate selection will be presented. Also a brief status / outlook on the prototype assembly will be given.