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T: Fachverband Teilchenphysik
T 77: Axion like particles II
T 77.4: Vortrag
Donnerstag, 2. April 2020, 17:20–17:35, H-HS XV
The TES Detector for ALPS II — •Rikhav Shah for the ALPS collaboration — JGU Mainz
The Any Light Particle Search II (ALPS II) is an experiment utilizing the concept of resonant enhancement to improve the sensitivity of traditional light shining through a wall style experiments. These experiments attempt to detect photons passing through an opaque wall via conversion to and from weakly interacting (relativistic) sub-eV particles, in the presence of a strong magnetic field. The detection of these photons requires a detector capable of observing the extremely small photon flux, of the order of 10−5 s−1. To realize this, the detector must have a low dark count rate and high efficiency. This can be achieved with a transition edge sensor (TES). This is a cryogenic calorimeter which exploits the drastic dependence of a material’s electrical resistance on the temperature, while at the superconducting edge. The current, updated setup of the TES at ALPS II will be presented. We discuss recent results from background studies of the TES, plans and challenges for the future as well as the current measurements from the detector in preparation for TES data taking starting in late 2021 or 2022.