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  1. Article ; Online: New Constraint on the Local Relic Neutrino Background Overdensity with the First KATRIN Data Runs.

    Aker, M / Batzler, D / Beglarian, A / Behrens, J / Berlev, A / Besserer, U / Bieringer, B / Block, F / Bobien, S / Bornschein, B / Bornschein, L / Böttcher, M / Brunst, T / Caldwell, T S / Carney, R M D / Chilingaryan, S / Choi, W / Debowski, K / Descher, M /
    Díaz Barrero, D / Doe, P J / Dragoun, O / Drexlin, G / Edzards, F / Eitel, K / Ellinger, E / Engel, R / Enomoto, S / Felden, A / Formaggio, J A / Fränkle, F M / Franklin, G B / Friedel, F / Fulst, A / Gauda, K / Gavin, A S / Gil, W / Glück, F / Grössle, R / Gumbsheimer, R / Hannen, V / Haußmann, N / Helbing, K / Hickford, S / Hiller, R / Hillesheimer, D / Hinz, D / Höhn, T / Houdy, T / Huber, A / Jansen, A / Karl, C / Kellerer, F / Kellerer, J / Kleifges, M / Klein, M / Köhler, C / Köllenberger, L / Kopmann, A / Korzeczek, M / Kovalík, A / Krasch, B / Krause, H / La Cascio, L / Lasserre, T / Le, T L / Lebeda, O / Lehnert, B / Lokhov, A / Machatschek, M / Malcherek, E / Mark, M / Marsteller, A / Martin, E L / Melzer, C / Mertens, S / Mostafa, J / Müller, K / Neumann, H / Niemes, S / Oelpmann, P / Parno, D S / Poon, A W P / Poyato, J M L / Priester, F / Ráliš, J / Ramachandran, S / Robertson, R G H / Rodejohann, W / Rodenbeck, C / Röllig, M / Röttele, C / Ryšavý, M / Sack, R / Saenz, A / Salomon, R / Schäfer, P / Schimpf, L / Schlösser, M / Schlösser, K / Schlüter, L / Schneidewind, S / Schrank, M / Schwemmer, A / Šefčík, M / Sibille, V / Siegmann, D / Slezák, M / Spanier, F / Steidl, M / Sturm, M / Telle, H H / Thorne, L A / Thümmler, T / Titov, N / Tkachev, I / Urban, K / Valerius, K / Vénos, D / Vizcaya Hernández, A P / Weinheimer, C / Welte, S / Wendel, J / Wiesinger, C / Wilkerson, J F / Wolf, J / Wüstling, S / Wydra, J / Xu, W / Zadoroghny, S / Zeller, G

    Physical review letters

    2022  Volume 129, Issue 1, Page(s) 11806

    Abstract: We report on the direct search for cosmic relic neutrinos using data acquired during the first two science campaigns of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity molecular tritium gas source are analyzed by a high-resolution ... ...

    Abstract We report on the direct search for cosmic relic neutrinos using data acquired during the first two science campaigns of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity molecular tritium gas source are analyzed by a high-resolution MAC-E filter around the end point at 18.57 keV. The analysis is sensitive to a local relic neutrino overdensity ratio of η<9.7×10^{10}/α (1.1×10^{11}/α) at a 90% (95%) confidence level with α=1 (0.5) for Majorana (Dirac) neutrinos. A fit of the integrated electron spectrum over a narrow interval around the end point accounting for relic neutrino captures in the tritium source reveals no significant overdensity. This work improves the results obtained by the previous neutrino mass experiments at Los Alamos and Troitsk. We furthermore update the projected final sensitivity of the KATRIN experiment to η<1×10^{10}/α at 90% confidence level, by relying on updated operational conditions.
    Language English
    Publishing date 2022-07-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.129.011806
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Bound on 3+1 Active-Sterile Neutrino Mixing from the First Four-Week Science Run of KATRIN.

    Aker, M / Altenmüller, K / Beglarian, A / Behrens, J / Berlev, A / Besserer, U / Bieringer, B / Blaum, K / Block, F / Bornschein, B / Bornschein, L / Böttcher, M / Brunst, T / Caldwell, T S / La Cascio, L / Chilingaryan, S / Choi, W / Díaz Barrero, D / Debowski, K /
    Deffert, M / Descher, M / Doe, P J / Dragoun, O / Drexlin, G / Dyba, S / Edzards, F / Eitel, K / Ellinger, E / Engel, R / Enomoto, S / Fedkevych, M / Felden, A / Formaggio, J A / Fränkle, F M / Franklin, G B / Friedel, F / Fulst, A / Gauda, K / Gil, W / Glück, F / Grössle, R / Gumbsheimer, R / Höhn, T / Hannen, V / Haußmann, N / Helbing, K / Hickford, S / Hiller, R / Hillesheimer, D / Hinz, D / Houdy, T / Huber, A / Jansen, A / Köllenberger, L / Karl, C / Kellerer, J / Kippenbrock, L / Klein, M / Kopmann, A / Korzeczek, M / Kovalík, A / Krasch, B / Krause, H / Lasserre, T / Le, T L / Lebeda, O / Le Guennic, N / Lehnert, B / Lokhov, A / Lopez Poyato, J M / Müller, K / Machatschek, M / Malcherek, E / Mark, M / Marsteller, A / Martin, E L / Melzer, C / Mertens, S / Niemes, S / Oelpmann, P / Osipowicz, A / Parno, D S / Poon, A W P / Priester, F / Röllig, M / Röttele, C / Rest, O / Robertson, R G H / Rodenbeck, C / Ryšavý, M / Sack, R / Saenz, A / Schaller, A / Schäfer, P / Schimpf, L / Schlösser, M / Schlösser, K / Schlüter, L / Schrank, M / Schulz, B / Šefčík, M / Seitz-Moskaliuk, H / Sibille, V / Siegmann, D / Slezák, M / Spanier, F / Steidl, M / Sturm, M / Sun, M / Telle, H H / Thümmler, T / Thorne, L A / Titov, N / Tkachev, I / Trost, N / Vénos, D / Valerius, K / Vizcaya Hernández, A P / Wüstling, S / Weber, M / Weinheimer, C / Weiss, C / Welte, S / Wendel, J / Wilkerson, J F / Wolf, J / Xu, W / Yen, Y-R / Zadoroghny, S / Zeller, G

    Physical review letters

    2021  Volume 126, Issue 9, Page(s) 91803

    Abstract: We report on the light sterile neutrino search from the first four-week science run of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are analyzed by a high-resolution MAC-E filter down to 40 eV ... ...

    Abstract We report on the light sterile neutrino search from the first four-week science run of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are analyzed by a high-resolution MAC-E filter down to 40 eV below the endpoint at 18.57 keV. We consider the framework with three active neutrinos and one sterile neutrino. The analysis is sensitive to the mass, m_{4}, of the fourth mass state for m_{4}^{2}≲1000  eV^{2} and to active-to-sterile neutrino mixing down to |U_{e4}|^{2}≳2×10^{-2}. No significant spectral distortion is observed and exclusion bounds on the sterile mass and mixing are reported. These new limits supersede the Mainz results for m_{4}^{2}≲1000  eV^{2} and improve the Troitsk bound for m_{4}^{2}<30  eV^{2}. The reactor and gallium anomalies are constrained for 100<Δm_{41}^{2}<1000  eV^{2}.
    Language English
    Publishing date 2021-03-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.091803
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN.

    Aker, M / Altenmüller, K / Arenz, M / Babutzka, M / Barrett, J / Bauer, S / Beck, M / Beglarian, A / Behrens, J / Bergmann, T / Besserer, U / Blaum, K / Block, F / Bobien, S / Bokeloh, K / Bonn, J / Bornschein, B / Bornschein, L / Bouquet, H /
    Brunst, T / Caldwell, T S / La Cascio, L / Chilingaryan, S / Choi, W / Corona, T J / Debowski, K / Deffert, M / Descher, M / Doe, P J / Dragoun, O / Drexlin, G / Dunmore, J A / Dyba, S / Edzards, F / Eisenblätter, L / Eitel, K / Ellinger, E / Engel, R / Enomoto, S / Erhard, M / Eversheim, D / Fedkevych, M / Felden, A / Fischer, S / Flatt, B / Formaggio, J A / Fränkle, F M / Franklin, G B / Frankrone, H / Friedel, F / Fuchs, D / Fulst, A / Furse, D / Gauda, K / Gemmeke, H / Gil, W / Glück, F / Görhardt, S / Groh, S / Grohmann, S / Grössle, R / Gumbsheimer, R / Ha Minh, M / Hackenjos, M / Hannen, V / Harms, F / Hartmann, J / Haußmann, N / Heizmann, F / Helbing, K / Hickford, S / Hilk, D / Hillen, B / Hillesheimer, D / Hinz, D / Höhn, T / Holzapfel, B / Holzmann, S / Houdy, T / Howe, M A / Huber, A / James, T M / Jansen, A / Kaboth, A / Karl, C / Kazachenko, O / Kellerer, J / Kernert, N / Kippenbrock, L / Kleesiek, M / Klein, M / Köhler, C / Köllenberger, L / Kopmann, A / Korzeczek, M / Kosmider, A / Kovalík, A / Krasch, B / Kraus, M / Krause, H / Kuckert, L / Kuffner, B / Kunka, N / Lasserre, T / Le, T L / Lebeda, O / Leber, M / Lehnert, B / Letnev, J / Leven, F / Lichter, S / Lobashev, V M / Lokhov, A / Machatschek, M / Malcherek, E / Müller, K / Mark, M / Marsteller, A / Martin, E L / Melzer, C / Menshikov, A / Mertens, S / Minter, L I / Mirz, S / Monreal, B / Morales Guzmán, P I / Naumann, U / Ndeke, W / Neumann, H / Niemes, S / Noe, M / Oblath, N S / Ortjohann, H-W / Osipowicz, A / Ostrick, B / Otten, E / Parno, D S / Phillips, D G / Plischke, P / Pollithy, A / Poon, A W P / Pouryamout, J / Prall, M / Priester, F / Röllig, M / Röttele, C / Ranitzsch, P C-O / Rest, O / Rinderspacher, R / Robertson, R G H / Rodenbeck, C / Rohr, P / Roll, Ch / Rupp, S / Ryšavý, M / Sack, R / Saenz, A / Schäfer, P / Schimpf, L / Schlösser, K / Schlösser, M / Schlüter, L / Schön, H / Schönung, K / Schrank, M / Schulz, B / Schwarz, J / Seitz-Moskaliuk, H / Seller, W / Sibille, V / Siegmann, D / Skasyrskaya, A / Slezák, M / Špalek, A / Spanier, F / Steidl, M / Steinbrink, N / Sturm, M / Suesser, M / Sun, M / Tcherniakhovski, D / Telle, H H / Thümmler, T / Thorne, L A / Titov, N / Tkachev, I / Trost, N / Urban, K / Vénos, D / Valerius, K / VanDevender, B A / Vianden, R / Vizcaya Hernández, A P / Wall, B L / Wüstling, S / Weber, M / Weinheimer, C / Weiss, C / Welte, S / Wendel, J / Wierman, K J / Wilkerson, J F / Wolf, J / Xu, W / Yen, Y-R / Zacher, M / Zadorozhny, S / Zbořil, M / Zeller, G

    Physical review letters

    2019  Volume 123, Issue 22, Page(s) 221802

    Abstract: 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 ... ...

    Abstract 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})  eV^{2}. 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 factor of 2 and provides model-independent input to cosmological studies of structure formation.
    Language English
    Publishing date 2019-12-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.123.221802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Quantitative Long-Term Monitoring of the Circulating Gases in the KATRIN Experiment Using Raman Spectroscopy.

    Aker, Max / Altenmüller, Konrad / Beglarian, Armen / Behrens, Jan / Berlev, Anatoly / Besserer, Uwe / Bieringer, Benedikt / Blaum, Klaus / Block, Fabian / Bornschein, Beate / Bornschein, Lutz / Böttcher, Matthias / Brunst, Tim / Caldwell, Thomas C / Chilingaryan, Suren / Choi, Wonqook / Díaz Barrero, Deseada D / Debowski, Karol / Deffert, Marco /
    Descher, Martin / Doe, Peter J / Dragoun, Otokar / Drexlin, Guido / Dyba, Stephan / Edzards, Frank / Eitel, Klaus / Ellinger, Enrico / Engel, Ralph / Enomoto, Sanshiro / Fedkevych, Mariia / Felden, Arne / Formaggio, Joseph F / Fränkle, Florian / Franklin, Gregg B / Friedel, Fabian / Fulst, Alexander / Gauda, Kevin / Gil, Woosik / Glück, Ferenc / Größle, Robin / Gumbsheimer, Rainer / Hannen, Volker / Haußmann, Norman / Helbing, Klaus / Hickford, Stephanie / Hiller, Roman / Hillesheimer, David / Hinz, Dominic / Höhn, Thomas / Houdy, Thibaut / Huber, Anton / Jansen, Alexander / Karl, Christian / Kellerer, Jonas / Kippenbrock, Luke / Klein, Manuel / Köhler, Christoph / Köllenberger, Leonard / Kopmann, Andreas / Korzeczek, Marc / Kovalík, Alojz / Krasch, Bennet / Krause, Holger / La Cascio, Luisa / Lasserre, Thierry / Le, Thanh-Long / Lebeda, Ondřej / Lehnert, Bjoern / Lokhov, Alexey / Machatschek, Moritz / Malcherek, Emma / Marsteller, Alexander / Martin, Eric L / Meier, Matthias / Melzer, Christin / Mertens, Susanne / Müller, Klaus / Niemes, Simon / Oelpmann, Patrick / Osipowicz, Alexander / Parno, Diana S / Poon, Alan W P / Lopez Poyato, Jose M / Priester, Florian / Rest, Oliver / Röllig, Marco / Röttele, Carsten / Robertson, R G Hamish / Rodenbeck, Caroline / Ryšavỳ, Milos / Sack, Rudolf / Saenz, Alejandro / Schäfer, Peter / Schaller Née Pollithy, Anna / Schimpf, Lutz / Schlösser, Klaus / Schlösser, Magnus / Schlüter, Lisa / Schrank, Michael / Schulz, Bruno / Sefčík, Michal / Seitz-Moskaliuk, Hendrik / Sibille, Valérian / Siegmann, Daniel / Slezák, Martin / Spanier, Felix / Steidl, Markus / Sturm, Michael / Sun, Menglei / Telle, Helmut H / Thorne, Larisa A / Thümmler, Thomas / Titov, Nikita / Tkachev, Igor / Vénos, Drahoš / Valerius, Kathrin / Vizcaya Hernández, Ana P / Weber, Marc / Weinheimer, Christian / Weiss, Christiane / Welte, Stefan / Wendel, Jürgen / Wilkerson, John F / Wolf, Joachim / Wüstling, Sascha / Xu, Weiran / Yen, Yung-Ruey / Zadoroghny, Sergey / Zeller, Genrich

    Sensors (Basel, Switzerland)

    2020  Volume 20, Issue 17

    Abstract: The Karlsruhe Tritium Neutrino (KATRIN) experiment aims at measuring the effective electron neutrino mass with a sensitivity of 0.2 eV/ ... ...

    Abstract The Karlsruhe Tritium Neutrino (KATRIN) experiment aims at measuring the effective electron neutrino mass with a sensitivity of 0.2 eV/c
    Language English
    Publishing date 2020-08-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s20174827
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book ; Online: The Design, Construction, and Commissioning of the KATRIN Experiment

    Aker, M. / Altenmüller, K. / Amsbaugh, J. F. / Arenz, M. / Babutzka, M. / Bast, J. / Bauer, S. / Bechtler, H. / Beck, M. / Beglarian, A. / Behrens, J. / Bender, B. / Berendes, R. / Berlev, A. / Besserer, U. / Bettin, C. / Bieringer, B. / Blaum, K. / Block, F. /
    Bobien, S. / Bohn, J. / Bokeloh, K. / Bolz, H. / Bornschein, B. / Bornschein, L. / Böttcher, M. / Bouquet, H. / Boyd, N. M. / Brunst, T. / Burritt, T. H. / Caldwell, T. S. / Chaoui, Z. / Chilingaryan, S. / Choi, W. / Corona, T. J. / Cox, G. A. / Debowski, K. / Deffert, M. / Descher, M. / Barrero, D. Díaz / Doe, P. J. / Dragoun, O. / Drexlin, G. / Dunmore, J. A. / Dyba, S. / Edzards, F. / Eichelhardt, F. / Eitel, K. / Ellinger, E. / Engel, R. / Enomoto, S. / Erhard, M. / Eversheim, D. / Fedkevych, M. / Felden, A. / Fischer, S. / Formaggio, J. A. / Fränkle, F. M. / Franklin, G. B. / Frenzel, H. / Friedel, F. / Fulst, A. / Gauda, K. / Gehring, R. / Gil, W. / Glück, F. / Görhardt, S. / Grimm, J. / Grohmann, S. / Groh, S. / Grössle, R. / Gumbsheimer, R. / Hackenjos, M. / Häßler, D. / Hannen, V. / Harms, F. / Harper, G. C. / Hartmann, J. / Haußmann, N. / Heizmann, F. / Helbing, K. / Held, M. / Hickford, S. / Hilk, D. / Hillen, B. / Hiller, R. / Hillesheimer, D. / Hinz, D. / Höhn, T. / Holzmann, S. / Horn, S. / Hötzel, M. / Houdy, T. / Howe, M. A. / Huber, A. / James, T. / Jansen, A. / Kaiser, M. / Karl, C. / Kazachenko, O. / Kellerer, J. / Kippenbrock, L. / Kleesiek, M. / Kleifges, M. / Kleinfeller, J. / Klein, M. / Köllenberger, L. / Kopmann, A. / Korzeczek, M. / Kosmider, A. / Kovalík, A. / Krasch, B. / Krause, H. / Kraus, M. / Kuckert, L. / Kumb, A. / Kunka, N. / Lasserre, T. / La Cascio, L. / Lebeda, O. / Leber, M. L. / Lehnert, B. / Leiber, B. / Letnev, J. / Lewis, R. J. / Le, T. L. / Lichter, S. / Lokhov, A. / Poyato, J. M. Lopez / Machatschek, M. / Malcherek, E. / Mark, M. / Marsteller, A. / Martin, E. L. / Mehret, K. / Meloni, M. / Melzer, C. / Menshikov, A. / Mertens, S. / Minter, L. I. / Monreal, B. / Mostafa, J. / Müller, K. / Myers, A. W. / Naumann, U. / Neumann, H. / Niemes, S. / Oelpmann, P. / Off, A. / Ortjohann, H. -W. / Osipowicz, A. / Ostrick, B. / Parno, D. S. / Peterson, D. A. / Plischke, P. / Poon, A. W. P. / Prall, M. / Priester, F. / Ranitzsch, P. C. -O. / Reich, J. / Renschler, P. / Rest, O. / Rinderspacher, R. / Robertson, R. G. H. / Rodejohann, W. / Rodenbeck, C. / Rohr, P. / Röllig, M. / Röttele, C. / Rupp, S. / Ryšavý, M. / Sack, R. / Saenz, A. / Sagawe, M. / Schäfer, P. / Schaller, A. / Schimpf, L. / Schlösser, K. / Schlösser, M. / Schlüter, L. / Schneidewind, S. / Schön, H. / Schönung, K. / Schrank, M. / Schulz, B. / Schwarz, J. / Šefčík, M. / Seitz-Moskaliuk, H. / Seller, W. / Sibille, V. / Siegmann, D. / Slezák, M. / Spanier, F. / Steidl, M. / Sturm, M. / Sun, M. / Tcherniakhovski, D. / Telle, H. H. / Thorne, L. A. / Thümmler, T. / Titov, N. / Tkachev, I. / Trost, N. / Valerius, K. / VanDevender, B. A. / Van Wechel, T. D. / Vénos, D. / Verbeek, A. / Vianden, R. / Hernández, A. P. Vizcaya / Vogt, K. / Wall, B. L. / Wandkowsky, N. / Weber, M. / Weingardt, H. / Weinheimer, C. / Weiss, C. / Welte, S. / Wendel, J. / Wierman, K. J. / Wilkerson, J. F. / Wolf, J. / Wüstling, S. / Xu, W. / Yen, Y. -R. / Zacher, M. / Zadoroghny, S. / Zboril, M. / Zeller, G.

    2021  

    Abstract: The KArlsruhe TRItium Neutrino (KATRIN) experiment, which aims to make a direct and model-independent determination of the absolute neutrino mass scale, is a complex experiment with many components. More than 15 years ago, we published a technical design ...

    Abstract The KArlsruhe TRItium Neutrino (KATRIN) experiment, which aims to make a direct and model-independent determination of the absolute neutrino mass scale, is a complex experiment with many components. More than 15 years ago, we published a technical design report (TDR) [https://publikationen.bibliothek.kit.edu/270060419] to describe the hardware design and requirements to achieve our sensitivity goal of 0.2 eV at 90% C.L. on the neutrino mass. Since then there has been considerable progress, culminating in the publication of first neutrino mass results with the entire beamline operating [arXiv:1909.06048]. In this paper, we document the current state of all completed beamline components (as of the first neutrino mass measurement campaign), demonstrate our ability to reliably and stably control them over long times, and present details on their respective commissioning campaigns.

    Comment: Added missing acknowledgement, corrected performance statement in chapter 4.2.5, updated author list and references
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2021-03-05
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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