Würzburg 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 71: Eingeladene Vorträge III

T 71.4: Semi-Invited Talk

Thursday, March 22, 2018, 15:12–15:36, Z6 - HS 0.001

SQUID readout for microcalorimeter based neutrino experiments — •Sebastian Kempf — Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany.

Neutrino physics has been always a strong driving force for the development of low-temperature microcalorimeters. The latter are presently used in a variety of experiments such as direct neutrino mass investigations or searches for the neutrinoless double beta decay. A famous example is the Electron capture in Ho-163 experiment ECHo which aims to investigate the electron neutrino mass by means of a calorimetric measurement of the ¹⁶³Ho electron capture spectrum using large metallic magnetic calorimeter arrays. Most of these microcalorimeter based experiments rely on the existence of ultra-low noise signal transducers converting the detector output signal into a voltage pulse. Superconducting quantum interference devices (SQUIDs) are often the devices of choice since they are intrinsically compatible with the microcalorimeter operation temperature, show a near quantum-limited noise performance and offer a very high system bandwidth.

This talk will give a short introduction into metallic magnetic calorimeter based neutrino physics experiments such as ECHo. It will then concentrate on the development of single-channel SQUIDs for experiments using only a small number of readout channels as well as frequency-domain multiplexed SQUID systems for next-generation large-scale experiments requiring tens or hundreds of thousands of individual detectors.