TES Detector for ALPS II
Rikhav Shah, Katharina-Sophie Isleif, Friederike Januschek, Axel, Lindner, Matthias Schott
TL;DR
This paper discusses the development and application of a TES detector with SQUID readout for ALPS II, a particle physics experiment searching for axion-like particles through photon detection.
Contribution
It introduces a cryogenic TES detector optimized for ultra-low background, high efficiency single photon detection in the context of ALPS II.
Findings
Achieved high detection efficiency for ~1 eV photons.
Demonstrated ultra-low background levels suitable for particle searches.
Ensured long-term stability of the detector setup.
Abstract
The application of cryogenic single photon detectors has found great use in high precision particle physics experiments such as ALPS (Any Light Particle Search) II, which implements it for fundamental studies to search for new particles. ALPS II is a light-shining-through-a-wall experiment searching for axion-like-particles, which couple to photons. The extremely low rate of photons generated by the conversion of such axion-like-particles necessitates a detector setup capable of low energy (~ 1 eV; as dictated by cavity optics) single photon detection with high efficiency and an ultra-low background level, with long-term stability. This can be realised by a Transition Edge Sensor (TES) setup with low-temperature SQUID readout.
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