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Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN.
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-purityExpand
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COMET Phase-I Technical Design Report
The Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in theExpand
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The KATRIN superconducting magnets: Overview and first performance results
Author(s): Arenz, M; Baek, WJ; Beck, M; Beglarian, A; Behrens, J; Bergmann, T; Berlev, A; Besserer, U; Blaum, K; Bode, T; Bornschein, B; Bornschein, L; Brunst, T; Buzinsky, N; Chilingaryan, S; Choi,Expand
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First operation of the KATRIN experiment with tritium
The 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,Expand
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First transmission of electrons and ions through the KATRIN beamline.
Author(s): Arenz, M; Baek, WJ; Beck, M; Beglarian, A; Behrens, J; Bergmann, T; Berlev, A; Besserer, U; Blaum, K; Bode, T; Bornschein, B; Bornschein, L; Brunst, T; Buzinsky, N; Chilingaryan, S; Choi,Expand
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Tests of by-pass diodes at cryogenic temperatures for the KATRIN magnets
The Karlsruhe Tritium Neutrino experiment (KATRIN) requires a series of superconducting solenoid magnets for guiding beta-electrons from the source to the detector. By-pass diodes will operate atExpand
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Investigation of prolate-oblate shape-coexistence in 74Kr
Abstract: The atomic nucleus 74Kr has been investigated using combined conversion-electron (CE) and γ-ray spectroscopy. In order to confirm the existence of the expected low-lying isomeric 0+2 state,Expand
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Calibration of high voltages at the ppm level by the difference of $$^{83{\mathrm{m}}}$$83mKr conversion electron lines at the KATRIN experiment
The neutrino mass experiment KATRIN requires a stability of 3 ppm for the retarding potential at − 18.6 kV of the main spectrometer. To monitor the stability, two custom-made ultra-preciseExpand
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Muon-induced background in the KATRIN main spectrometer
The KATRIN experiment aims to measure the effective electron antineutrino mass $$m_{\overline{\nu }_e}$$ with a sensitivity of $${0.2}\,{\hbox {eV}/\hbox {c}^2}$$ using a gaseous tritium sourceExpand
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Commissioning of the vacuum system of the KATRIN main spectrometer
Author(s): Arenz, M; Babutzka, M; Bahr, M; Barrett, JP; Bauer, S; Beck, M; Beglarian, A; Behrens, J; Bergmann, T; Besserer, U; Blumer, J; Bodine, LI; Bokeloh, K; Bonn, J; Bornschein, B; Bornschein,Expand
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