Authors:	Shah, Rikhav Isleif, Katharina-Sophie Januschek, Friederike Lindner, Axel Schott, Matthias
Title:	Characterising a single-photon detector for ALPS II
Online publication date:	16-Dec-2022
Year of first publication:	2022
Language:	english
Abstract:	Transition Edge Sensors (TESs) have found widespread application in fundamental studies due to their low background rate, high efficiency, and excellent energy resolution. This makes them suitable candidates for ALPS II, which investigates the existence of new particles (axions and axion-like-particles) which couple very weakly to photons. ALPS II anticipates an extremely low signal rate <10−5 cps (amounting to ∼1–2 photons a day). The detection of these low energy (∼1 eV, 1064 nm) photons with a high energy resolution is necessary for ALPS II. We show that with our TES setup, we can analyze the TES pulses with different methods such as pulse fitting and Principal Component Analysis (PCA). These achieve (using the standard deviation) an energy resolution (ΔE/E) down to ∼8%. The pulse analysis, with a chosen fitting approach, assists also in achieving a very low dark count rate O(10−6) cps for 1064 nm photon signal searches in the TES.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-8335
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	Journal of low temperature physics 209
Pages or article number:	355 362
Publisher:	Springer Science + Business Media B.V.
Publisher place:	Dordrecht
Issue date:	2022
ISSN:	1573-7357
Publisher DOI:	10.1007/s10909-022-02720-0
Appears in collections:	DFG-491381577-H