0000000001299554
AUTHOR
C. Köhler
showing 12 related works from this author
First operation of the KATRIN experiment with tritium
2020
AbstractThe determination of the neutrino mass is one of the major challenges in astroparticle physics today. Direct neutrino mass experiments, based solely on the kinematics of $$\upbeta $$β-decay, provide a largely model-independent probe to the neutrino mass scale. The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to directly measure the effective electron antineutrino mass with a sensitivity of $$0.2\hbox { eV}$$0.2eV ($$90\%$$90% CL). In this work we report on the first operation of KATRIN with tritium which took place in 2018. During this commissioning phase of the tritium circulation system, excellent agreement of the theoretical prediction with the recorded spectra was …
Suppression of Penning discharges between the KATRIN spectrometers
2020
The KArlsruhe TRItium Neutrino experiment (KATRIN) aims to determine the effective electron (anti)neutrino mass with a sensitivity of $0.2\textrm{ eV/c}^2$ (90$\%$ C.L.) by precisely measuring the endpoint region of the tritium $\beta$-decay spectrum. It uses a tandem of electrostatic spectrometers working as MAC-E (magnetic adiabatic collimation combined with an electrostatic) filters. In the space between the pre-spectrometer and the main spectrometer, an unavoidable Penning trap is created when the superconducting magnet between the two spectrometers, biased at their respective nominal potentials, is energized. The electrons accumulated in this trap can lead to discharges, which create a…
40(th) EASD Annual Meeting of the European Association for the Study of Diabetes : Munich, Germany, 5-9 September 2004
2004
Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN
2019
We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are energy analyzed by a high-resolution MAC-E filter. A fit of the integrated electron spectrum over a narrow interval around the kinematic end point at 18.57 keV gives an effective neutrino mass square value of (−1.0−1.1+0.9) eV2. From this, we derive an upper limit of 1.1 eV (90% confidence level) on the absolute mass scale of neutrinos. This value coincides with the KATRIN sensitivity. It improves upon previous mass limits from kinematic measurements by almost a …
CCDC 1477304: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B
CCDC 1477300: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B
CCDC 1477307: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B
CCDC 1477301: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B
CCDC 1477306: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B
CCDC 1477302: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B
CCDC 1477303: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B
CCDC 1477305: Experimental Crystal Structure Determination
2016
Related Article: C. Köhler, E. Rentschler|2016|Dalton Trans.|45|12854|doi:10.1039/C6DT02023B