98 citations · 307 across the 22 of their papers we have counts for
17 papers · 1 filter
Comparison of the detector response and calibration function of metallic microcalorimeters for X-ray photons and external electrons
Neven Kovac, Fabienne Adam, Sebastian Kempf +6
Metallic microcalorimeters (MMCs) are cryogenic single-particle detectors that rely on a calorimetric detection principle. Due to their excellent energy resolution, close-to-ideal…
Magnetic microcalorimeters for primary activity standardization within the EMPIR project PrimA-LTD
Michael Müller, Matias Rodrigues, Jörn Beyer +2
The precision of existing decay data of radionuclides for activity determination is often a limitation for actual applications in science, society, and industry. For this reason, t…
Simultaneous MMC readout using a tailored μMUX based readout system
Daniel Richter, Mathias Wegner, Felix Ahrens +7
Magnetic microcalorimeters (MMCs) are cryogenic, energy-dispersive single-particle detectors providing excellent energy resolution, intrinsically fast signal rise time, quantum eff…
Suitability of Magnetic Microbolometers based on Paramagnetic Temperature Sensors for CMB Polarization Measurements
Juan Manuel Geria, Matias Rolf Hampel, Sebastian Kempf +10
High resolution maps of polarization anisotropies of the Cosmic Microwave Background (CMB) are in high demand, since the discovery of primordial B-Modes in the polarization pattern…
Simulation framework for microwave SQUID multiplexer optimization
Constantin Schuster, Mathias Wegner, Sebastian Kempf
So far, performance prediction and optimization of microwave SQUID multiplexers has largely been based on simple approximate analytical models and experimental results. This is cau…
Flux ramp modulation based hybrid microwave SQUID multiplexer
Constantin Schuster, Mathias Wegner, Christian Enss +1
We present a hybrid microwave SQUID multiplexer that combines two frequency-division multiplexing techniques to allow multiplexing a given number of cryogenic detectors with only a…
Analytical model of the readout power and SQUID hysteresis parameter dependence of the resonator characteristics of microwave SQUID multiplexers
Mathias Wegner, Christian Enss, Sebastian Kempf
We report on the development of an analytical model describing the readout power and SQUID hysteresis parameter dependence of the resonator characteristics used for frequency encod…
Metallic magnetic calorimeter arrays for the first phase of the ECHo experiment
F. Mantegazzini, A. Barth, H. Dorrer +12
The ECHo experiment has been designed for the determination of the effective electron neutrino mass by means of the analysis of the end-point region of the Ho-163 electron capture…
Flux ramp modulation based MHz frequency-division dc-SQUID multiplexer
Daniel Richter, Ludwig Hoibl, Thomas Wolber +6
We present a MHz frequency-division dc-SQUID multiplexer that is based on flux ramp modulation and a series array of identical current-sensing dc-SQUIDs with tightly coupled in…
High-resolution for IAXO: MMC-based X-ray Detectors
D. Unger, A. Abeln, C. Enss +4
Axion helioscopes like the planned International Axion Observatory (IAXO) search for evidence of axions and axion-like particles (ALPs) from the Sun. A strong magnetic field is use…
Development of a novel calorimetry setup based on metallic paramagnetic temperature sensors
Andreas Reifenberger, Andreas Reiser, Sebastian Kempf +2
We have developed a new micro-fabricated platform for the measurement of the specific heat of low heat capacity mg-sized metallic samples, such as superconductors, down to temperat…
Software-defined Radio Readout System for the ECHo Experiment
Oliver Sander, Nick Karcher, Oliver Krömer +4
Metallic magnetic calorimeters (MMCs) are cryogenic detectors that offer an excellent energy resolution, a signal rise time of <100 ns, a high dynamic range and almost optimal line…
First Calorimetric Measurement of OI-line in the Electron Capture Spectrum of Ho
P. C. -O. Ranitzsch, C. Hassel, M. Wegner +6
The isotope Ho undergoes an electron capture process with a recommended value for the energy available to the decay, , of about 2.5 keV. According to the presen…
The Electron Capture Ho Experiment ECHo: an overview
L. Gastaldo, K. Blaum, A. Doerr +15
The determination of the absolute scale of the neutrino masses is one of the most challenging present questions in particle physics. The most stringent limit, $m(\barν_{\mathrm{e}}…
Multiplexed readout of MMC detector arrays using non-hysteretic rf-SQUIDs
S. Kempf, M. Wegner, L. Gastaldo +2
Metallic magnetic calorimeters (MMCs) are widely used for various experiments in fields ranging from atomic and nuclear physics to x-ray spectroscopy, laboratory astrophysics or ma…
The Electron Capture Ho Experiment ECHo
K. Blaum, A. Doerr, C. E. Duellmann +15
The determination of the absolute scale of the neutrino masses is one of the most challenging questions in particle physics. Different approaches are followed to achieve a sensitiv…
Characterization of low temperature metallic magnetic calorimeters having gold absorbers with implanted Ho ions
L. Gastaldo, P. Ranitzsch, F. von Seggern +9
For the first time we have investigated the behavior of fully micro-fabricated low temperature metallic magnetic calorimeters (MMCs) after undergoing an ion-implantation process. T…