Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 44: Gasgefüllte Detektoren

T 44.4: Vortrag

Dienstag, 26. März 2019, 16:50–17:05, ST 3

Commissioning of a new gas system for the Würzburg cosmic ray facility — •Thorben Swirski, Deb Sankar Bhattacharya, and Raimund Ströhmer — Universität Würzburg

The Würzburg cosmic ray facility is used to conduct research on the behavior of Micromegas detectors. A homogenious mixture of Argon and CO₂ can be prepared in desired ratios.

The behavior of the detector changes with any impurities in the gas. Of these impurities, water has been shown to be often present. In addition, oxygen can have a large effect due to its high electronegativity, while making up about 20.95% of the air, making entry in case of a leak likely. A systematic study on such changes of the detector behavior with a controlled infusion of impurities can give us an idea about the detector responses in large experiments like ATLAS, ALICE or ILC.

To be able to produce a gas containing only trace amounts of up to 1% each of oxygen and water, the cosmic ray facility had to be augmented with a new gas system. The system was built at the end of 2018.

This talk will give an overview over the new system and will show first measurements.