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  1. Article ; Online: An online beam profiler for laser-accelerated protons.

    Schwind, K M / Aktan, E / Prasad, R / Cerchez, M / Eversheim, D / Willi, O / Aurand, B

    The Review of scientific instruments

    2019  Volume 90, Issue 5, Page(s) 53307

    Abstract: The design and operation of an online energy and spatially resolving detector based on three different scintillators for laser-driven protons are described. The device can be used for a multi-Hertz recording rate. The spatial resolution is <0.5 mm, ... ...

    Abstract The design and operation of an online energy and spatially resolving detector based on three different scintillators for laser-driven protons are described. The device can be used for a multi-Hertz recording rate. The spatial resolution is <0.5 mm, allowing to retrieve details of the proton beam which is of interest, e.g., for radiographic applications. At the same time, the particle energy is divided into three energy bands between 1 MeV and 5 MeV to retrieve the proton energy spectrum. The absolute response of the detector was calibrated at a conventional proton accelerator.
    Language English
    Publishing date 2019-06-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.5086248
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Achieving 99.9% proton spin-flip efficiency at higher energy with a small RF dipole.

    Leonova, M A / Krisch, A D / Morozov, V S / Raymond, R S / Wong, V K / Gebel, R / Lehrach, A / Lorentz, B / Maier, R / Prasuhn, D / Schnase, A / Stockhorst, H / Eversheim, D / Hinterberger, F / Ulbrich, K

    Physical review letters

    2004  Volume 93, Issue 22, Page(s) 224801

    Abstract: We recently used a new ferrite rf dipole to study spin flipping of a 2.1 GeV/c vertically polarized proton beam stored in the COSY Cooler Synchrotron in Jülich, Germany. We swept the rf dipole's frequency through an rf-induced spin resonance to flip the ... ...

    Abstract We recently used a new ferrite rf dipole to study spin flipping of a 2.1 GeV/c vertically polarized proton beam stored in the COSY Cooler Synchrotron in Jülich, Germany. We swept the rf dipole's frequency through an rf-induced spin resonance to flip the beam's polarization direction. After determining the resonance's frequency, we varied the frequency range, frequency ramp time, and number of flips. At the rf dipole's maximum strength and optimum frequency range and ramp time, we measured a spin-flip efficiency of 99.92+/-0.04%. This result, along with a similar 0.49 GeV/c IUCF result, indicates that, due to the Lorentz invariance of an rf dipole's transverse integralBdl and the weak energy dependence of its spin-resonance strength, an only 35% stronger rf dipole should allow efficient spin flipping in the 100 GeV BNL RHIC Collider or even the 7 TeV CERN Large Hadron Collider.
    Language English
    Publishing date 2004-11-26
    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.93.224801
    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. 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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