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  1. Article ; Online: A Ramsey apparatus for proton spins in flowing water.

    Schulthess, Ivo / Fratangelo, Anastasio / Hautle, Patrick / Heil, Philipp / Markaj, Gjon / Persoz, Marc / Pistillo, Ciro / Thorne, Jacob / Piegsa, Florian M

    Journal of magnetic resonance (San Diego, Calif. : 1997)

    2023  Volume 353, Page(s) 107496

    Abstract: We present an apparatus that applies Ramsey's method of separated oscillatory fields to proton spins in water molecules. The setup consists of a water circuit, a spin polarizer, a magnetically shielded interaction region with various radio frequency ... ...

    Abstract We present an apparatus that applies Ramsey's method of separated oscillatory fields to proton spins in water molecules. The setup consists of a water circuit, a spin polarizer, a magnetically shielded interaction region with various radio frequency elements, and a nuclear magnetic resonance system to measure the spin polarization. We show that this apparatus can be used for Rabi resonance measurements and to investigate magnetic and pseudomagnetic field effects in Ramsey-type precision measurements with a sensitivity below 100 pT.
    Language English
    Publishing date 2023-06-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1469665-4
    ISSN 1096-0856 ; 1557-8968 ; 1090-7807 ; 0022-2364
    ISSN (online) 1096-0856 ; 1557-8968
    ISSN 1090-7807 ; 0022-2364
    DOI 10.1016/j.jmr.2023.107496
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: First demonstration of antimatter wave interferometry.

    Sala, S / Ariga, A / Ereditato, A / Ferragut, R / Giammarchi, M / Leone, M / Pistillo, C / Scampoli, P

    Science advances

    2019  Volume 5, Issue 5, Page(s) eaav7610

    Abstract: Interference of matter waves is at the heart of quantum physics and has been observed for a wide range of particles from electrons to complex molecules. Here, we demonstrate matter wave interference of single positrons using a period-magnifying Talbot- ... ...

    Abstract Interference of matter waves is at the heart of quantum physics and has been observed for a wide range of particles from electrons to complex molecules. Here, we demonstrate matter wave interference of single positrons using a period-magnifying Talbot-Lau interferometer based on material diffraction gratings. The system produced high-contrast periodic fringes, which were detected by means of nuclear emulsions capable of determining the impact point of each individual positron with submicrometric resolution. The measured energy dependence of fringe contrast in the range of 8 to 16 keV proves the quantum-mechanical origin of the periodic pattern and excludes classical projective effects, providing the first observation to date of antimatter wave interference. Future applications of this interferometric technique include the measurement of the gravitational acceleration of neutral antimatter systems exploiting the inertial sensing capabilities of Talbot-Lau interference.
    Language English
    Publishing date 2019-05-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.aav7610
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: New Limit on Axionlike Dark Matter Using Cold Neutrons.

    Schulthess, Ivo / Chanel, Estelle / Fratangelo, Anastasio / Gottstein, Alexander / Gsponer, Andreas / Hodge, Zachary / Pistillo, Ciro / Ries, Dieter / Soldner, Torsten / Thorne, Jacob / Piegsa, Florian M

    Physical review letters

    2022  Volume 129, Issue 19, Page(s) 191801

    Abstract: We report on a search for dark matter axionlike particles (ALPs) using a Ramsey-type apparatus for cold neutrons. A hypothetical ALP-gluon coupling would manifest in a neutron electric dipole moment signal oscillating in time. Twenty-four hours of data ... ...

    Abstract We report on a search for dark matter axionlike particles (ALPs) using a Ramsey-type apparatus for cold neutrons. A hypothetical ALP-gluon coupling would manifest in a neutron electric dipole moment signal oscillating in time. Twenty-four hours of data have been analyzed in a frequency range from 23  μHz to 1 kHz, and no significant oscillating signal has been found. The usage of present dark-matter models allows one to constrain the coupling of ALPs to gluons in the mass range from 10^{-19} to 4×10^{-12}  eV. The best limit of C_{G}/f_{a}m_{a}=2.7×10^{13}  GeV^{-2} (95% C.L.) is reached in the mass range from 2×10^{-17} to 2×10^{-14}  eV.
    Language English
    Publishing date 2022-11-17
    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.129.191801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Bedrock sculpting under an active alpine glacier revealed from cosmic-ray muon radiography.

    Nishiyama, R / Ariga, A / Ariga, T / Lechmann, A / Mair, D / Pistillo, C / Scampoli, P / Valla, P G / Vladymyrov, M / Ereditato, A / Schlunegger, F

    Scientific reports

    2019  Volume 9, Issue 1, Page(s) 6970

    Abstract: Mountain glaciers form landscapes with U-shaped valleys, roche moutonées and overdeepenings through bedrock erosion. However, little evidence for active glacial carving has been provided particularly for areas above the Equilibrium Line Altitude (ELA) ... ...

    Abstract Mountain glaciers form landscapes with U-shaped valleys, roche moutonées and overdeepenings through bedrock erosion. However, little evidence for active glacial carving has been provided particularly for areas above the Equilibrium Line Altitude (ELA) where glaciers originate. This is mainly due to our lack of information about the shape of the bedrock underneath active glaciers in highly elevated areas. In the past years, the bedrock morphology underneath active glaciers has been studied by geophysical methods in order to infer the subglacial mechanisms of bedrock erosion. However, these comprise surveys on the glaciers' surface, from where it has been difficult to investigate the lateral boundary between the ice and the bedrock with sufficient resolution. Here we perform a muon-radiographic inspection of the Eiger glacier (Switzerland, European Alps) with the aid of cosmic-ray muon attenuation. We find a reach (600 × 300 m) within the accumulation area where strong lateral glacial erosion has cut nearly vertically into the underlying bedrock. This suggests that the Eiger glacier has profoundly sculpted its bedrock in its accumulation area. This also reveals that the cosmic-ray muon radiography is an ideal technology to reconstruct the shape of the bedrock underneath an active glacier.
    Language English
    Publishing date 2019-05-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-019-43527-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book ; Online: SMAUG v1.0 – a user-friendly muon simulator for transmission tomography of geological objects in 3D

    Lechmann, Alessandro / Mair, David / Ariga, Akitaka / Ariga, Tomoko / Ereditato, Antonio / Nishiyama, Ryuichi / Pistillo, Ciro / Scampoli, Paola / Vladymyrov, Mykhailo / Schlunegger, Fritz

    eISSN: 1991-9603

    2021  

    Abstract: Knowledge about muon tomography has spread in recent years in the geoscientific community and several collaborations between geologists and physicists have been founded. As the data analysis is still mostly done by particle physicists, we address the ... ...

    Abstract Knowledge about muon tomography has spread in recent years in the geoscientific community and several collaborations between geologists and physicists have been founded. As the data analysis is still mostly done by particle physicists, we address the need of the geoscientific community to participate in the data analysis, while not having to worry too much about the particle physics equations in the background. The result hereof is SMAUG, a toolbox consisting of several modules that cover the various aspects of data analysis in a muon tomographic experiment. In this study we show how a comprehensive geophysical model can be built from basic physics equations. The emerging uncertainties are dealt with by a probabilistic formulation of the inverse problem, which is finally solved by a Monte Carlo Markov Chain algorithm. Finally, we benchmark the SMAUG results against those of a recent study, which however, have been established with an approach that is not easily accessible to the geoscientific community. We show that they reach identical results with the same level of accuracy and precision.
    Subject code 306
    Language English
    Publishing date 2021-11-02
    Publishing country de
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Book ; Online: The effect of rock composition on muon tomography measurements

    Lechmann, Alessandro / Mair, David / Ariga, Akitaka / Ariga, Tomoko / Ereditato, Antonio / Nishiyama, Ryuichi / Pistillo, Ciro / Scampoli, Paola / Schlunegger, Fritz / Vladymyrov, Mykhailo

    eISSN: 1869-9529

    2018  

    Abstract: In recent years, the use of radiographic inspection with cosmic-ray muons has spread into multiple research and industrial fields. This technique is based on the high-penetration power of cosmogenic muons. Specifically, it allows the resolution of ... ...

    Abstract In recent years, the use of radiographic inspection with cosmic-ray muons has spread into multiple research and industrial fields. This technique is based on the high-penetration power of cosmogenic muons. Specifically, it allows the resolution of internal density structures of large scale, geological objects through precise measurement of the muon absorption rate. So far in many previous works, this muon absorption rate has been considered to depend solely on the density of traversed material (under the assumption of a standard rock) but the variation in chemical composition has not been taken seriously into account. However, from our experience with muon tomography in Alpine environments we find that this assumption causes a substantial bias on the muon flux calculation, particularly where the target consists of high {Z 2 /A} (like basalts) or low {Z 2 /A} (e.g. dolomites) rocks and where the material thickness exceeds 300 m. In this paper we derive an energy loss equation for different minerals and we additionally derive a related equation for mineral assemblages that can be used for any rock type on which mineralogical data is available. Thus, for muon tomography experiments in which high/low {Z 2 /A} rock thicknesses can be expected, it is advisable to plan an accompanying geological field campaign to determine a realistic rock model.
    Subject code 333
    Language English
    Publishing date 2018-06-08
    Publishing country de
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Book ; Online: The effect of rock composition on muon tomography measurements

    Lechmann, Alessandro / Mair, David / Ariga, Akitaka / Ariga, Tomoko / Ereditato, Antonio / Nishiyama, Ryuichi / Pistillo, Ciro / Scampoli, Paola / Schlunegger, Fritz / Vladymyrov, Mykhailo

    eISSN: 1869-9529

    2018  

    Abstract: In recent years, the use of radiographic inspection with cosmic-ray muons has spread into multiple research and industrial fields. This technique is based on the high-penetration power of cosmogenic muons. Specifically, it allows the resolution of ... ...

    Abstract In recent years, the use of radiographic inspection with cosmic-ray muons has spread into multiple research and industrial fields. This technique is based on the high-penetration power of cosmogenic muons. Specifically, it allows the resolution of internal density structures of large-scale geological objects through precise measurements of the muon absorption rate. So far, in many previous works, this muon absorption rate has been considered to depend solely on the density of traversed material (under the assumption of a standard rock) but the variation in chemical composition has not been taken seriously into account. However, from our experience with muon tomography in Alpine environments, we find that this assumption causes a substantial bias in the muon flux calculation, particularly where the target consists of high { Z 2 ∕ A } rocks (like basalts and limestones) and where the material thickness exceeds 300 m. In this paper, we derive an energy loss equation for different minerals and we additionally derive a related equation for mineral assemblages that can be used for any rock type on which mineralogical data are available. Thus, for muon tomography experiments in which high { Z 2 ∕ A } rock thicknesses can be expected, it is advisable to plan an accompanying geological field campaign to determine a realistic rock model.
    Subject code 333
    Language English
    Publishing date 2018-12-21
    Publishing country de
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Conference proceedings: Nuclear emulsion film detectors for proton radiography: design and test of the first prototype

    Braccini, S. / Ereditato, A. / Kreslo, I. / Moser, U. / Pistillo, C. / Scampoli, P. / Studer, S.

    2009  , Page(s) 09ptcog024

    Event/congress Meeting of the Particle Therapy Co-Operative Group; PTCOG 48; Heidelberg; Particle Therapy Co-Operative Group; 2009
    Keywords Medizin, Gesundheit
    Publishing date 2009-09-24
    Publisher German Medical Science GMS Publishing House; Düsseldorf
    Document type Conference proceedings
    DOI 10.3205/09ptcog024
    Database German Medical Science

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  9. Article: Measurements of neutrino oscillation parameters from the T2K experiment using

    Abe, K / Akhlaq, N / Akutsu, R / Ali, A / Alonso Monsalve, S / Alt, C / Andreopoulos, C / Antonova, M / Aoki, S / Arihara, T / Asada, Y / Ashida, Y / Atkin, E T / Barbi, M / Barker, G J / Barr, G / Barrow, D / Batkiewicz-Kwasniak, M / Bench, F /
    Berardi, V / Berns, L / Bhadra, S / Blanchet, A / Blondel, A / Bolognesi, S / Bonus, T / Bordoni, S / Boyd, S B / Bravar, A / Bronner, C / Bron, S / Bubak, A / Buizza Avanzini, M / Caballero, J A / Calabria, N F / Cao, S / Carabadjac, D / Carter, A J / Cartwright, S L / Catanesi, M G / Cervera, A / Chakrani, J / Cherdack, D / Chong, P S / Christodoulou, G / Chvirova, A / Cicerchia, M / Coleman, J / Collazuol, G / Cook, L / Cudd, A / Dalmazzone, C / Daret, T / Davydov, Yu I / De Roeck, A / De Rosa, G / Dealtry, T / Delogu, C C / Densham, C / Dergacheva, A / Di Lodovico, F / Dolan, S / Douqa, D / Doyle, T A / Drapier, O / Dumarchez, J / Dunne, P / Dygnarowicz, K / Eguchi, A / Emery-Schrenk, S / Erofeev, G / Ershova, A / Eurin, G / Fedorova, D / Fedotov, S / Feltre, M / Finch, A J / Fiorentini Aguirre, G A / Fiorillo, G / Fitton, M D / Franco Patiño, J M / Friend, M / Fujii, Y / Fukuda, Y / Fusshoeller, K / Giannessi, L / Giganti, C / Glagolev, V / Gonin, M / González Rosa, J / Goodman, E A G / Gorin, A / Grassi, M / Guigue, M / Hadley, D R / Haigh, J T / Hamacher-Baumann, P / Harris, D A / Hartz, M / Hasegawa, T / Hassani, S / Hastings, N C / Hayato, Y / Henaff, D / Hiramoto, A / Hogan, M / Holeczek, J / Holin, A / Holvey, T / Hong Van, N T / Honjo, T / Iacob, F / Ichikawa, A K / Ikeda, M / Ishida, T / Ishitsuka, M / Israel, H T / Iwamoto, K / Izmaylov, A / Izumi, N / Jakkapu, M / Jamieson, B / Jenkins, S J / Jesús-Valls, C / Jiang, J J / Jonsson, P / Joshi, S / Jung, C K / Jurj, P B / Kabirnezhad, M / Kaboth, A C / Kajita, T / Kakuno, H / Kameda, J / Kasetti, S P / Kataoka, Y / Katayama, Y / Katori, T / Kawaue, M / Kearns, E / Khabibullin, M / Khotjantsev, A / Kikawa, T / Kikutani, H / King, S / Kiseeva, V / Kisiel, J / Kobata, T / Kobayashi, H / Kobayashi, T / Koch, L / Kodama, S / Konaka, A / Kormos, L L / Koshio, Y / Kostin, A / Koto, T / Kowalik, K / Kudenko, Y / Kudo, Y / Kuribayashi, S / Kurjata, R / Kutter, T / Kuze, M / La Commara, M / Labarga, L / Lachner, K / Lagoda, J / Lakshmi, S M / Lamers James, M / Lamoureux, M / Langella, A / Laporte, J-F / Last, D / Latham, N / Laveder, M / Lavitola, L / Lawe, M / Lee, Y / Lin, C / Lin, S-K / Litchfield, R P / Liu, S L / Li, W / Longhin, A / Long, K R / Lopez Moreno, A / Ludovici, L / Lu, X / Lux, T / Machado, L N / Magaletti, L / Mahn, K / Malek, M / Mandal, M / Manly, S / Marino, A D / Marti-Magro, L / Martin, D G R / Martini, M / Martin, J F / Maruyama, T / Matsubara, T / Matveev, V / Mauger, C / Mavrokoridis, K / Mazzucato, E / McCauley, N / McElwee, J / McFarland, K S / McGrew, C / McKean, J / Mefodiev, A / Megias, G D / Mehta, P / Mellet, L / Metelko, C / Mezzetto, M / Miller, E / Minamino, A / Mineev, O / Mine, S / Miura, M / Molina Bueno, L / Moriyama, S / Morrison, P / Mueller, Th A / Munford, D / Munteanu, L / Nagai, K / Nagai, Y / Nakadaira, T / Nakagiri, K / Nakahata, M / Nakajima, Y / Nakamura, A / Nakamura, H / Nakamura, K / Nakamura, K D / Nakano, Y / Nakayama, S / Nakaya, T / Nakayoshi, K / Naseby, C E R / Ngoc, T V / Nguyen, V Q / Niewczas, K / Nishimori, S / Nishimura, Y / Nishizaki, K / Nosek, T / Nova, F / Novella, P / Nugent, J C / O'Keeffe, H M / O'Sullivan, L / Odagawa, T / Ogawa, T / Okada, R / Okinaga, W / Okumura, K / Okusawa, T / Ospina, N / Owen, R A / Oyama, Y / Palladino, V / Paolone, V / Pari, M / Parlone, J / Parsa, S / Pasternak, J / Pavin, M / Payne, D / Penn, G C / Pershey, D / Pickering, L / Pidcott, C / Pintaudi, G / Pistillo, C / Popov, B / Porwit, K / Posiadala-Zezula, M / Prabhu, Y S / Pupilli, F / Quilain, B / Radermacher, T / Radicioni, E / Radics, B / Ramírez, M A / Ratoff, P N / Reh, M / Riccio, C / Rondio, E / Roth, S / Roy, N / Rubbia, A / Ruggeri, A C / Ruggles, C A / Rychter, A / Sakashita, K / Sánchez, F / Santucci, G / Schloesser, C M / Scholberg, K / Scott, M / Seiya, Y / Sekiguchi, T / Sekiya, H / Sgalaberna, D / Shaikhiev, A / Shaker, F / Shaykina, A / Shiozawa, M / Shorrock, W / Shvartsman, A / Skrobova, N / Skwarczynski, K / Smyczek, D / Smy, M / Sobczyk, J T / Sobel, H / Soler, F J P / Sonoda, Y / Speers, A J / Spina, R / Suslov, I A / Suvorov, S / Suzuki, A / Suzuki, S Y / Suzuki, Y / Sztuc, A A / Tada, M / Tairafune, S / Takayasu, S / Takeda, A / Takeuchi, Y / Takifuji, K / Tanaka, H K / Tanihara, Y / Tani, M / Teklu, A / Tereshchenko, V V / Teshima, N / Thamm, N / Thompson, L F / Toki, W / Touramanis, C / Towstego, T / Tsui, K M / Tsukamoto, T / Tzanov, M / Uchida, Y / Vagins, M / Vargas, D / Varghese, M / Vasseur, G / Vilela, C / Villa, E / Vinning, W G S / Virginet, U / Vladisavljevic, T / Wachala, T / Walsh, J G / Wang, Y / Wan, L / Wark, D / Wascko, M O / Weber, A / Wendell, R / Wilking, M J / Wilkinson, C / Wilson, J R / Wood, K / Wret, C / Xia, J / Xu, Y-H / Yamamoto, K / Yamamoto, T / Yanagisawa, C / Yang, G / Yano, T / Yasutome, K / Yershov, N / Yevarouskaya, U / Yokoyama, M / Yoshimoto, Y / Yoshimura, N / Yu, M / Zaki, R / Zalewska, A / Zalipska, J / Zaremba, K / Zarnecki, G / Zhao, X / Zhu, T / Ziembicki, M / Zimmerman, E D / Zito, M / Zsoldos, S

    The European physical journal. C, Particles and fields

    2023  Volume 83, Issue 9, Page(s) 782

    Abstract: The T2K experiment presents new measurements of neutrino oscillation parameters ... ...

    Abstract The T2K experiment presents new measurements of neutrino oscillation parameters using
    Language English
    Publishing date 2023-09-05
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-023-11819-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: A moiré deflectometer for antimatter.

    Aghion, S / Ahlén, O / Amsler, C / Ariga, A / Ariga, T / Belov, A S / Berggren, K / Bonomi, G / Bräunig, P / Bremer, J / Brusa, R S / Cabaret, L / Canali, C / Caravita, R / Castelli, F / Cerchiari, G / Cialdi, S / Comparat, D / Consolati, G /
    Derking, H / Di Domizio, S / Di Noto, L / Doser, M / Dudarev, A / Ereditato, A / Ferragut, R / Fontana, A / Genova, P / Giammarchi, M / Gligorova, A / Gninenko, S N / Haider, S / Huse, T / Jordan, E / Jørgensen, L V / Kaltenbacher, T / Kawada, J / Kellerbauer, A / Kimura, M / Knecht, A / Krasnický, D / Lagomarsino, V / Lehner, S / Magnani, A / Malbrunot, C / Mariazzi, S / Matveev, V A / Moia, F / Nebbia, G / Nédélec, P / Oberthaler, M K / Pacifico, N / Petràček, V / Pistillo, C / Prelz, F / Prevedelli, M / Regenfus, C / Riccardi, C / Røhne, O / Rotondi, A / Sandaker, H / Scampoli, P / Storey, J / Vasquez, M A Subieta / Špaček, M / Testera, G / Vaccarone, R / Widmann, E / Zavatarelli, S / Zmeskal, J

    Nature communications

    2014  Volume 5, Page(s) 4538

    Abstract: The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially revealing new forces that ... ...

    Abstract The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially revealing new forces that violate the weak equivalence principle. Here we report on a successful extension of a tool from atom optics--the moiré deflectometer--for a measurement of the acceleration of slow antiprotons. The setup consists of two identical transmission gratings and a spatially resolving emulsion detector for antiproton annihilations. Absolute referencing of the observed antimatter pattern with a photon pattern experiencing no deflection allows the direct inference of forces present. The concept is also straightforwardly applicable to antihydrogen measurements as pursued by the AEgIS collaboration. The combination of these very different techniques from high energy and atomic physics opens a very promising route to the direct detection of the gravitational acceleration of neutral antimatter.
    Language English
    Publishing date 2014-07-28
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/ncomms5538
    Database MEDical Literature Analysis and Retrieval System OnLINE

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