TY  - THES
AU  - Dreyling-Eschweiler, Jan
TI  - A superconducting microcalorimeter for low-flux detection of near-infrared single photons
IS  - DESY-THESIS-2014-016
PB  - University of Hamburg
VL  - Dissertation
CY  - Hamburg
M1  - DESY-2014-03157
M1  - DESY-THESIS-2014-016
SP  - 221
PY  - 2014
N1  - Dissertation, University of Hamburg, 2014
AB  - This thesis covers the development and the characterization of a single photon detector based on a superconducting microcalorimeter. The detector development is motivated by the Any Light Particle Search II (ALPS II) experiment at DESY in Hamburg, which searches for weakly interacting sub-eV particles (WISPs). Therefore, a detection of low-fluxes of 1064 nm light is required. The work is divided in three analyses: the characterization of a milli-kelvin (mK) cryostat, the characterization of superconducting sensors for single photon detection, and the determination of dark count rates concerning 1064 nm signals.Firstly, an adiabatic demagnetization refrigerator (ADR) is characterized, which allows to reach mK-temperatures. During commissioning, the ADR cryostat is optimized and prepared to stably cool superconducting sensors at 80 mK ± 25 μK. It is found that sensors can be continuously operated for ∼20 h before recharging the system in <2 h. Furthermore, the adiabatic system reaches a chance of success of ∼80 
KW  - Dissertation (GND)
LB  - PUB:(DE-HGF)11
DO  - DOI:10.3204/DESY-THESIS-2014-016
UR  - https://bib-pubdb1.desy.de/record/171082
ER  -