Aachen 2019 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 34: Axionen I
T 34.3: Vortrag
Dienstag, 26. März 2019, 16:30–16:45, S09
Current status of the ALPS II detector — •Rikhav Shah for the ALPS collaboration — Johannes Gutenberg-Universität Mainz — DESY Deutsches Elektronen-Synchrotron
The Any Light Particle Search II (ALPS II) is an experiment that utilizes the concept of resonance enhancement to improve on the sensitivity of traditional light shining through a wall style experiments. These experiments attempt to detect photons passing through an opaque wall by converting to relativistic weakly interacting sub-eV particles and then reconverting back to photons. The detection of these photons requires a detector capable of observing the extremely small rates, of the order of 10−5 s−1. Thus the detector must have a low dark count rate as well as a high detection efficiency. This is achieved with a transition edge sensor (TES), i.e. a cryogenic calorimeter, which exploits the drastic dependence of a material’s electrical resistance on the temperature at the superconducting edge. One major experimental challenge is the suppression of background dominated by blackbody radiation to a sufficiently low level. The setup of the TES at ALPS II will be presented. We discuss the current status as well as the first measurements of the detector preparing for data taking starting in 2020.