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21 results on '"Friman-Gayer U."'

1. Deviations from the Porter-Thomas distribution due to non-statistical $\gamma$ decay below the $^{150}$Nd neutron separation threshold

Author

Papst, O., Isaak, J., Werner, V., Savran, D., Pietralla, N., Battaglia, G., Beck, T., Beuschlein, M., Finch, S. W., Friman-Gayer, U., Ide, K. E., Janssens, R. V. F., Jones, M. D., Kleemann, J., Löher, B., Scheck, M., Spieker, M., Tornow, W., Zidarova, R., and Zilges, A.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

We introduce a new method for the study of fluctuations of partial transition widths based on nuclear resonance fluorescence experiments with quasimonochromatic linearly-polarized photon beams below particle separation thresholds. It is based on the average branching of decays of $J=1$ states of an even-even nucleus to the $2^+_1$ state in comparison to the ground state. Between 5 and 7 MeV, an almost constant average branching ratio of 0.490(16) is observed for the nuclide $^{150}$Nd. Assuming $\chi^2$-distributed partial transition widths, this average branching ratio is related to a degree of freedom of $\nu = 1.93(12)$, rejecting the validity of the Porter-Thomas distribution, requiring $\nu=1$. The observed deviation can be explained by non-statistical effects in the $\gamma$-decay behavior with contributions in the range of 9.4(10)% up to 94(10)%., Comment: 7 pages, 2 figures

Published
2025

2. Gamma decay of the $^{154}$Sm Isovector Giant Dipole Resonance: Smekal-Raman Scattering as a Novel Probe of Nuclear Ground-State Deformation

Author

Kleemann, J., Pietralla, N., Friman-Gayer, U., Isaak, J., Papst, O., Prifti, K., Werner, V., Ayangeakaa, A. D., Beck, T., Colò, G., Cortés, M. L., Finch, S. W., Fulghieri, M., Gribble, D., Ide, K. E., James, X. K. -H., Janssens, R. V. F., Johnson, S. R., Koseoglou, P., Krishichayan, Savran, D., and Tornow, W.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Gamma decays of the isovector giant dipole resonance (GDR) of the deformed nucleus $^{154}$Sm from $2^+_1$-Smekal-Raman and elastic scattering were measured using linearly polarized, quasimonochromatic photon beams. The two scattering processes were disentangled through their distinct angular distributions. Their branching ratio and cross sections were determined at six excitation energies covering the $^{154}$Sm GDR. Both agree with the predictions of the geometrical model for the GDR and establish $\gamma$ decay as an observable sensitive to the structure of the resonance. Consequently, the data place strong constraints on the nuclear shape, including the degree of triaxiality. The derived $^{154}$Sm shape parameters $\beta=0.2926(26)$ and $\gamma=5.0(14)$ agree well with other measurements and recent Monte Carlo Shell-Model calculations., Comment: 7 pages, 3 figures, 3 tables

Published
2024
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3. The HIBEAM program: search for neutron oscillations at the ESS

Author

Santoro, V., Milstead, D., Fierlinger, P., Snow, W. M., Barrow, J., Bartis, M., Bentley, P., Björk, L., Brooijmans, G., de la Cour, N., Di Julio, D. D., Dunne, K., Eriksson, H., Ferreira, M. J., Friman-Gayer, U., Holl, M., Kamyshkov, Y., Kemp, E., Kickulies, M., Kolevatov, R., Johansson, H. T., Jönsson, B., Lejon, W., Damian, J. I. Marquez, Meirose, B., Nepomuceno, A., Nilsson, T., Oskarsson, A., Pasechnik, R., Persson, L. B., Rataj, B., Rogers, J., Silverstein, S., Stadnik, Y. V., Wagner, R., Wolker, M., Yiu, S. C., and Zanini, L.

Subjects
Physics - Instrumentation and Detectors
Abstract

With the construction of the European Spallation Source, a remarkable opportunity has emerged to conduct high sensitivity searches for neutron oscillations, including a first search for thirty years for free neutrons converting to antineutrons. Furthermore, searches can be made for transitions of neutrons and antineutrons to sterile neutron states. Upgrades to the ESS infrastructure allow an improved HIBEAM design that would provide an increase in sensitivity by an order of magnitude compared to previous work. The HIBEAM program focuses on processes that violate baryon number by one or two units. The observation of a process satisfying one of the Sakharov conditions addresses the open question of the origin of the matter-antimatter asymmetry in the Universe. Sterile neutron states would belong to a `dark' sector of particles which may explain dark matter. As electrically neutral, meta-stable objects that can be copiously produced and studied, neutrons represent an attractive portal to a `dark' sector. The HIBEAM instrument can also be utilised for other purposes such as direct searches for ultralight axion dark matter. This paper describes the capability, design, infrastructure, and potential of the HIBEAM program. This includes a dedicated beamline, neutron optical system, magnetic shielding and control, and detectors for neutrons and antineutrons., Comment: 58 pages, 23 figures

Published
2023

4. HighNESS Conceptual Design Report: Volume I

Author

Santoro, V., Kheir, O. Abou El, Acharya, D., Akhyani, M., Andersen, K. H., Barrow, J., Bentley, P., Bernasconi, M., Bertelsen, M., Bessler, Y., Bianchi, A., Brooijmans, G., Broussard, L., Brys, T., Busi, M., Campi, D., Chambon, A., Chen, J., Czamler, V., Deen, P., DiJulio, D. D., Dian, E., Draskovits, L., Dunne, K., Barbari, M. El, Ferreira, M. J., Fierlinger, P., Fröst, V. T., Folsom, B. T., Friman-Gayer, U., Gaye, A., Gorini, G., Gustafsson, A., Gutberlet, T., Happe, C., Han, X., Hartl, M., Holl, M., Jackson, A., Kemp, E., Kamyshkov, Y., Kittelmann, T., Klinkby, E. B., Kolevatov, R., Laporte, S. I., Lauritzen, B., Lejon, W., Linander, R., Lindroos, M., Marko, M., Damián, J. I. Márquez, McClanahan, T. C., Meirose, B., Mezei, F., Michel, K., Milstead, D., Muhrer, G., Nepomuceno, A., Neshvizhevsky, V., Nilsson, T., Odén, U., Plivelic, T., Ramic, K., Rataj, B., Remec, I., Rizzi, N., Rogers, J., Rosenthal, E., Rosta, L., Rücker, U., Samothrakitis, S., Schreyer, A., Selknaes, J. R., Shuai, H., Silverstein, S., Snow, W. M., Strobl, M., Strothmann, M., Takibayev, A., Wagner, R., Willendrup, P., Xu, S., Yiu, S. C., Yngwe, L., Young, A. R., Wolke, M., Zakalek, P., Zavorka, L., Zanini, L., and Zimmer, O.

Subjects
Physics - Instrumentation and Detectors
Abstract

The European Spallation Source, currently under construction in Lund, Sweden, is a multidisciplinary international laboratory. Once completed to full specifications, it will operate the world's most powerful pulsed neutron source. Supported by a 3 million Euro Research and Innovation Action within the EU Horizon 2020 program, a design study (HighNESS) has been completed to develop a second neutron source located below the spallation target. Compared to the first source, designed for high cold and thermal brightness, the new source has been optimized to deliver higher intensity, and a shift to longer wavelengths in the spectral regions of cold (CN, 2--20\,\AA), very cold (VCN, 10--120\,\AA), and ultracold (UCN, ${>}\,{500}$\,\AA) neutrons. The second source comprises a large liquid deuterium moderator designed to produce CN and support secondary VCN and UCN sources. Various options have been explored in the proposed designs, aiming for world-leading performance in neutronics. These designs will enable the development of several new instrument concepts and facilitate the implementation of a high-sensitivity neutron-antineutron oscillation experiment (NNBAR). This document serves as the Conceptual Design Report for the HighNESS project, representing its final deliverable., Comment: 269 pages, 255 figures. Volume I of the final deliverable of the HighNESS Project (HORIZON 2020 grant agreement ID: 951782)

Published
2023
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5. Particle Physics at the European Spallation Source

Author

Abele, H., Alekou, A., Algora, A., Andersen, K., Baessler, S., Barron-Palos, L., Barrow, J., Baussan, E., Bentley, P., Berezhiani, Z., Bessler, Y., Bhattacharyya, A. K., Bianchi, A., Bijnens, J., Blanco, C., Kraljevic, N. Blaskovic, Blennow, M., Bodek, K., Bogomilov, M., Bohm, C., Bolling, B., Bouquerel, E., Brooijmans, G., Broussard, L. J., Buchan, O., Burgman, A., Calen, H., Carlile, C. J., Cederkall, J., Chanel, E., Christiansen, P., Cirigliano, V., Collar, J. I., Collins, M., Crawford, C. B., Morales, E. Cristaldo, Cupial, P., D'Alessi, L., Damian, J. I. M., Danared, H., Dancila, D., de Andre, J. P. A. M., Delahaye, J. P., Degenkolb, S., Di Julio, D. D., Dracos, M., Dunne, K., Efthymiopoulos, I., Ekelof, T., Eklund, L., Eshraqi, M., Esteban, I., Fanourakis, G., Farricker, A., Fernandez-Martinez, E., Ferreira, M. J., Fertl, M., Fierlinger, P., Folsom, B., Frank, A., Fratangelo, A., Friman-Gayer, U., Fukuda, T., Fynbo, H . O . U., Sosa, A. Garcia, Gazis, N., Galnander, B., Geralis, Th., Ghosh, M., Gokbulut, G., Gomez-Cadenas, J . J., Gonzalez-Alonso, M., Gonzalez, F., Halic, L., Happe, C., Heil, P., Heinz, A., Herde, H., Holl, M., Jenke, T., Jenssen, M., Jericha, E., Johansson, H. T., Johansson, R., Johansson, T., Kamyshkov, Y., Topaksu, A. Kayis, Kildetoft, B., Kirch, K., Klicek, B., Klinkby, E., Kolevatov, R., Konrad, G., Koziol, M., Krhac, K., Kupsc, A., Lacny, L., Larizgoitia, L., Lewis, C. M., Lindroos, M., Lychagin, E., Lytken, E., Maiano, C., Marciniewski, P., Markaj, G., Markisch, B., Marrelli, C., Martins, C., Meirose, B., Mezzetto, M., Milas, N., Milstead, D., Monrabal, F., Muhrer, G., Nepomuceno, A., Nesvizhevsky, V., Nilsson, T., Novella, P., Oglakci, M., Ohlsson, T., Olvegard, M., Oskarsson, A., Ota, T., Park, J., Patrzalek, D., Perrey, H., Persoz, M., Petkov, G., Piegsa, F. M., Pistillo, C., Poussot, P., Privitera, P., Rataj, B., Ries, D., Rizzi, N., Rosauro-Alcaraz, S., Rozpedzik, D., Saiang, D., Santoro, V., Schmidt, U., Schober, H., Schulthess, I., Silverstein, S., Simon, A., Sina, H., Snamina, J., Snow, W. M., Soldner, T., Stavropoulos, G., Stipcevic, M., Szybinski, B., Takibayev, A., Tang, Z., Tarkeshian, R., Theroine, C., Thorne, J., Terranova, F., Thomas, J., Tolba, T., Torres-Sanchez, P., Trachanas, E., Tsenov, R., Uggerhoj, U. I., Vankova-Kirilova, G., Vassilopoulos, N., Wagner, R., Wang, X., Wildner, E., Wolke, M., Wurtz, J., Yiu, S. C., Yoon, S. G., Young, A. R., Zanini, L., Zejma, J., Zerzion, D., Zimmer, O., Zormpa, O., and Zou, Y.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract

Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world's brightest neutron source. As such, it has the potential for a particle physics program with a unique reach and which is complementary to that available at other facilities. This paper describes proposed particle physics activities for the ESS. These encompass the exploitation of both the neutrons and neutrinos produced at the ESS for high precision (sensitivity) measurements (searches)., Comment: 121 pages, updated version after referee comments

Published
2022
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6. The Development of the NNBAR Experiment

Author

Backman, F., Barrow, J., Beßler, Y., Bianchi, A., Bohm, C., Brooijmans, G., Broussard, L. J., Calen, H., Cederkäll, J., Damian, J. I. M., Dian, E., Di Julio, D. D., Dunne, K., Eklund, L., Ferreira, M. J., Fierlinger, P., Friman-Gayer, U., Happe, C., Holl, M., Johansson, T., Kamyshkov, Y., Klinkby, E., Kolevatov, R., Kupsc, A., Meirose, B., Milstead, D., Nepomuceno, A., Nilsson, T., Oskarsson, A., Perrey, H., Ramic, K., Rataj, B., Rizzi, N., Santoro, V., Silverstein, S., Snow, W. M., Takibayev, A., Wagner, R., Wolke, M., Yiu, S. C., Young, A. R., Zanini, L., and Zimmer, O.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment
Abstract

The NNBAR experiment for the European Spallation Source will search for free neutrons converting to antineutrons with a sensitivity improvement of three orders of magnitude compared to the last such search. This paper describes progress towards a conceptual design report for NNBAR. The design of a moderator, neutron reflector, beamline, shielding and annihilation detector is reported. The simulations used form part of a model which will be used for optimisation of the experiment design and quantification of its sensitivity., Comment: 30 pages, 26 figures, accepted for publication in Journal of Instrumentation (JINST)

Published
2022
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7. Model-independent determination of the dipole response of $^{66}$Zn using quasi-monoenergetic and linearly-polarized photon beams

Author

Savran, D., Isaak, J., Schwengner, R., Massarczyk, R., Scheck, M., Tornow, W., Battaglia, G., Beck, T., Finch, S. W., Fransen, C., Friman-Gayer, U., Gonzalez, R., Hoemann, E., Janssens, R. V. F., Johnson, S. R., Jones, M. D., Kleemann, J., Krishichayan, Little, D. R., O'Donnell, D., Papst, O., Pietralla, N., Sinclair, J., Werner, V., Wieland, O., and Wilhelmy, J.

Subjects
Nuclear Experiment
Abstract

[Background] Photon strength functions are an important ingredient in calculations relevant for the nucleosynthesis of heavy elements. The relation to the photoabsorption cross section allows to experimentally constrain photon strength functions by investigating the photo-response of atomic nuclei. [Purpose] We determine the photoresponse of $^{66}$Zn in the energy region of 5.6 MeV to 9.9 MeV and analyze the contribution of the "elastic" decay channel back to the ground state. In addition, for the elastic channel electric and magnetic dipole transitions were separated. [Methods] Nuclear resonance fluorescence experiments were performed using a linearly-polarized quasi-monoenergetic photon beam at the High Intensity $\gamma$-ray Source. Photon beam energies from 5.6 to 9.9 MeV with an energy spread of about 3% were selected in steps of 200-300 keV. Two High Purity Germanium detectors were used for the subsequent $\gamma$-ray spectroscopy. [Results] Full photoabsorption cross sections are extracted from the data making use of the monoenergetic character of the photon beam. For the ground-state decay channel, the average contribution of electric and magnetic dipole strengths is disentangled. The average branching ratio back to the ground state is determined as well. [Conclusions] The new results indicate lower cross sections when compared to the values extracted from a former experiment using bremsstrahlung on $^{66}$Zn. In the latter, the average branching ratio to the ground state is estimated from statistical-model calculations in order to analyze the data. Corresponding estimates from statistical-model calculations underestimate this branching ratio compared to the values extracted from the present analysis, which would partly explain the high cross sections determined from the bremsstrahlung data.

Published
2022
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8. Investigation of $^{11}$B and $^{40}$Ca levels at 8-9 MeV by Nuclear Resonance Fluorescence

Author

Gribble, D., Iliadis, C., Janssens, R. V. F., Friman-Gayer, U., Krishichayan, and Finch, S.

Subjects
Nuclear Experiment
Abstract

We report on the measurement of $^{11}$B and $^{40}$Ca levels between excitation energies of 8 and 9 MeV using nuclear resonance fluorescence (NRF). The experiment was carried out with nearly-monoenergetic and linearly polarized photon beams provided by the High-Intensity $\gamma$-ray Source (HI$\gamma$S) facility at the Triangle Universities Nuclear Laboratory (TUNL). States in $^{11}$B are important for calibrations of NRF measurements, while the properties of $^{40}$Ca levels impact potassium nucleosynthesis in globular clusters. For $^{40}$Ca, we report on improved excitation energies and an unambiguous $2^-$ assignment for the state at 8425 keV. For $^{11}$B, we obtained improved values for $\gamma$-ray multipolarity mixing ratios and branching ratios of the 8920 keV level., Comment: 14 pages, 9 figures, to be published in Physical Review C

Published
2022
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9. Design of an optimized nested-mirror neutron reflector for a NNBAR experiment

Author

Wagner, R., Barrow, J., Bohm, C., Brooijmans, G., Calen, H., Cederkäll, J., Collin, J., Dunne, K., Eklund, L., Fierlinger, P., Friman-Gayer, U., Frost, M., Holl, M., Johansson, T., Kamyshkov, Y., Klinkby, E., Kupsc, A., Meirose, B., Milstead, D., Nepomuceno, A., Nilsson, T., Oskarsson, A., Perrey, H., Rataj, B., Rizzi, N., Santoro, V., Silverstein, S., Takibayev, A., Wolke, M., Yiu, S.C., Young, A.R., Zanini, L., and Zimmer, O.

Published
2023
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10. HighNESS conceptual design report: Volume II. the NNBAR experiment

Author

Santoro, V, Abou El Kheir, O, Acharya, D, Akhyani, M, Andersen, K, Barrow, J, Bentley, P, Bernasconi, M, Bertelsen, M, Beßler, Y, Bianchi, A, Brooijmans, G, Broussard, L, Brys, T, Busi, M, Campi, D, Chambon, A, Chen, J, Czamler, V, Deen, P, Dijulio, D, Dian, E, Draskovits, L, Dunne, K, El Barbari, M, Ferreira, M, Fierlinger, P, Fröst, V, Folsom, B, Friman-Gayer, U, Gaye, A, Gorini, G, Gustafsson, A, Gutberlet, T, Happe, C, Han, X, Hartl, M, Holl, M, Jackson, A, Kemp, E, Kamyshkov, Y, Kittelmann, T, Klinkby, E, Kolevatov, R, Laporte, S, Lauritzen, B, Lejon, W, Linander, R, Lindroos, M, Marko, M, Márquez Damián, J, Mcclanahan, T, Meirose, B, Mezei, F, Michel, K, Milstead, D, Muhrer, G, Nepomuceno, A, Neshvizhevsky, V, Nilsson, T, Odén, U, Plivelic, T, Ramic, K, Rataj, B, Remec, I, Rizzi, N, Rogers, J, Rosenthal, E, Rosta, L, Rücker, U, Samothrakitis, S, Schreyer, A, Selknaes, J, Shuai, H, Silverstein, S, Snow, W, Strobl, M, Strothmann, M, Takibayev, A, Wagner, R, Willendrup, P, Xu, S, Yiu, S, Yngwe, L, Young, A, Wolke, M, Zakalek, P, Zavorka, L, Zanini, L, Zimmer, O, Santoro V., Abou El Kheir O., Acharya D., Akhyani M., Andersen K. H., Barrow J., Bentley P., Bernasconi M., Bertelsen M., Beßler Y., Bianchi A., Brooijmans G., Broussard L., Brys T., Busi M., Campi D., Chambon A., Chen J., Czamler V., Deen P., Dijulio D. D., Dian E., Draskovits L., Dunne K., El Barbari M., Ferreira M. J., Fierlinger P., Fröst V. T., Folsom B. T., Friman-Gayer U., Gaye A., Gorini G., Gustafsson A., Gutberlet T., Happe C., Han X., Hartl M., Holl M., Jackson A., Kemp E., Kamyshkov Y., Kittelmann T., Klinkby E. B., Kolevatov R., Laporte S. I., Lauritzen B., Lejon W., Linander R., Lindroos M., Marko M., Márquez Damián J. I., McClanahan T. C., Meirose B., Mezei F., Michel K., Milstead D., Muhrer G., Nepomuceno A., Neshvizhevsky V., Nilsson T., Odén U., Plivelic T., Ramic K., Rataj B., Remec I., Rizzi N., Rogers J., Rosenthal E., Rosta L., Rücker U., Samothrakitis S., Schreyer A., Selknaes J. R., Shuai H., Silverstein S., Snow W. M., Strobl M., Strothmann M., Takibayev A., Wagner R., Willendrup P., Xu S., Yiu S. C., Yngwe L., Young A. R., Wolke M., Zakalek P., Zavorka L., Zanini L., Zimmer O., Santoro, V, Abou El Kheir, O, Acharya, D, Akhyani, M, Andersen, K, Barrow, J, Bentley, P, Bernasconi, M, Bertelsen, M, Beßler, Y, Bianchi, A, Brooijmans, G, Broussard, L, Brys, T, Busi, M, Campi, D, Chambon, A, Chen, J, Czamler, V, Deen, P, Dijulio, D, Dian, E, Draskovits, L, Dunne, K, El Barbari, M, Ferreira, M, Fierlinger, P, Fröst, V, Folsom, B, Friman-Gayer, U, Gaye, A, Gorini, G, Gustafsson, A, Gutberlet, T, Happe, C, Han, X, Hartl, M, Holl, M, Jackson, A, Kemp, E, Kamyshkov, Y, Kittelmann, T, Klinkby, E, Kolevatov, R, Laporte, S, Lauritzen, B, Lejon, W, Linander, R, Lindroos, M, Marko, M, Márquez Damián, J, Mcclanahan, T, Meirose, B, Mezei, F, Michel, K, Milstead, D, Muhrer, G, Nepomuceno, A, Neshvizhevsky, V, Nilsson, T, Odén, U, Plivelic, T, Ramic, K, Rataj, B, Remec, I, Rizzi, N, Rogers, J, Rosenthal, E, Rosta, L, Rücker, U, Samothrakitis, S, Schreyer, A, Selknaes, J, Shuai, H, Silverstein, S, Snow, W, Strobl, M, Strothmann, M, Takibayev, A, Wagner, R, Willendrup, P, Xu, S, Yiu, S, Yngwe, L, Young, A, Wolke, M, Zakalek, P, Zavorka, L, Zanini, L, Zimmer, O, Santoro V., Abou El Kheir O., Acharya D., Akhyani M., Andersen K. H., Barrow J., Bentley P., Bernasconi M., Bertelsen M., Beßler Y., Bianchi A., Brooijmans G., Broussard L., Brys T., Busi M., Campi D., Chambon A., Chen J., Czamler V., Deen P., Dijulio D. D., Dian E., Draskovits L., Dunne K., El Barbari M., Ferreira M. J., Fierlinger P., Fröst V. T., Folsom B. T., Friman-Gayer U., Gaye A., Gorini G., Gustafsson A., Gutberlet T., Happe C., Han X., Hartl M., Holl M., Jackson A., Kemp E., Kamyshkov Y., Kittelmann T., Klinkby E. B., Kolevatov R., Laporte S. I., Lauritzen B., Lejon W., Linander R., Lindroos M., Marko M., Márquez Damián J. I., McClanahan T. C., Meirose B., Mezei F., Michel K., Milstead D., Muhrer G., Nepomuceno A., Neshvizhevsky V., Nilsson T., Odén U., Plivelic T., Ramic K., Rataj B., Remec I., Rizzi N., Rogers J., Rosenthal E., Rosta L., Rücker U., Samothrakitis S., Schreyer A., Selknaes J. R., Shuai H., Silverstein S., Snow W. M., Strobl M., Strothmann M., Takibayev A., Wagner R., Willendrup P., Xu S., Yiu S. C., Yngwe L., Young A. R., Wolke M., Zakalek P., Zavorka L., Zanini L., and Zimmer O.

Abstract

A key aim of the HighNESS project for the European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report for the NNBAR experiment. NNBAR would exploit a new cold lower moderator to make the first search in over thirty years for free neutrons converting to anti-neutrons. The observation of such a baryon-number-violating signature would be of fundamental significance and tackle open questions in modern physics, including the origin of the matter-antimatter asymmetry. This report shows the design of the beamline, supermirror focusing system, magnetic and radiation shielding, and anti-neutron detector necessary for the experiment. A range of simulation programs are employed to quantify the performance of the experiment and show how background can be suppressed. For a search with full background suppression, a sensitivity improvement of three orders of magnitude is expected, as compared with the previous search. Civil engineering studies for the NNBAR beamline are also shown, as is a costing model for the experiment.

Published
2024

11. HighNESS conceptual design report: Volume II. The NNBAR experiment.

Author

Santoro, V., primary, Abou El Kheir, O., additional, Acharya, D., additional, Akhyani, M., additional, Andersen, K.H., additional, Barrow, J., additional, Bentley, P., additional, Bernasconi, M., additional, Bertelsen, M., additional, Beßler, Y., additional, Bianchi, A., additional, Brooijmans, G., additional, Broussard, L., additional, Brys, T., additional, Busi, M., additional, Campi, D., additional, Chambon, A., additional, Chen, J., additional, Czamler, V., additional, Deen, P., additional, DiJulio, D.D., additional, Dian, E., additional, Draskovits, L., additional, Dunne, K., additional, El Barbari, M., additional, Ferreira, M.J., additional, Fierlinger, P., additional, Fröst, V.T., additional, Folsom, B.T., additional, Friman-Gayer, U., additional, Gaye, A., additional, Gorini, G., additional, Gustafsson, A., additional, Gutberlet, T., additional, Happe, C., additional, Han, X., additional, Hartl, M., additional, Holl, M., additional, Jackson, A., additional, Kemp, E., additional, Kamyshkov, Y., additional, Kittelmann, T., additional, Klinkby, E.B., additional, Kolevatov, R., additional, Laporte, S.I., additional, Lauritzen, B., additional, Lejon, W., additional, Linander, R., additional, Lindroos, M., additional, Marko, M., additional, Márquez Damián, J.I., additional, McClanahan, T.C., additional, Meirose, B., additional, Mezei, F., additional, Michel, K., additional, Milstead, D., additional, Muhrer, G., additional, Nepomuceno, A., additional, Neshvizhevsky, V., additional, Nilsson, T., additional, Odén, U., additional, Plivelic, T., additional, Ramic, K., additional, Rataj, B., additional, Remec, I., additional, Rizzi, N., additional, Rogers, J., additional, Rosenthal, E., additional, Rosta, L., additional, Rücker, U., additional, Samothrakitis, S., additional, Schreyer, A., additional, Selknaes, J.R., additional, Shuai, H., additional, Silverstein, S., additional, Snow, W.M., additional, Strobl, M., additional, Strothmann, M., additional, Takibayev, A., additional, Wagner, R., additional, Willendrup, P., additional, Xu, S., additional, Yiu, S.C., additional, Yngwe, L., additional, Young, A.R., additional, Wolke, M., additional, Zakalek, P., additional, Zavorka, L., additional, Zanini, L., additional, and Zimmer, O., additional

Published
2024
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12. The HighNESS Project at the European Spallation Source : Current Status and Future Perspectives

Author

Santoro, V., Andersen, K. H., Bentley, P., Bernasconi, M., Bertelsen, M., Bessler, Y., Bianchi, A., Brys, T., Campi, D., Chambon, A., Czamler, V., Di Julio, D. D., Dian, E., Dunne, Katherine, Ferreira, M. J., Fierlinger, P., Friman-Gayer, U., Folsom, B. T., Gaye, A., Gorini, G., Happe, C., Holl, M., Kamyshkov, Y., Kittelmann, T., Klinkby, E. B., Kolevatov, R., Laporte, S. I., Lauritzen, B., Damian, J. I. Marquez, Meirose, Bernhard, Mezei, F., Milstead, David A., Muhrer, G., Neshvizhevsky, V., Rataj, B., Rizzi, N., Rosta, L., Samothrakitis, S., Schober, H., Selknaes, J. R., Silverstein, Samuel B., Strobl, M., Strothmann, M., Takibayev, A., Wagner, R., Willendrup, P., Xu, S., Yiu, S. C., Zanini, L., Zimmer, O., Santoro, V., Andersen, K. H., Bentley, P., Bernasconi, M., Bertelsen, M., Bessler, Y., Bianchi, A., Brys, T., Campi, D., Chambon, A., Czamler, V., Di Julio, D. D., Dian, E., Dunne, Katherine, Ferreira, M. J., Fierlinger, P., Friman-Gayer, U., Folsom, B. T., Gaye, A., Gorini, G., Happe, C., Holl, M., Kamyshkov, Y., Kittelmann, T., Klinkby, E. B., Kolevatov, R., Laporte, S. I., Lauritzen, B., Damian, J. I. Marquez, Meirose, Bernhard, Mezei, F., Milstead, David A., Muhrer, G., Neshvizhevsky, V., Rataj, B., Rizzi, N., Rosta, L., Samothrakitis, S., Schober, H., Selknaes, J. R., Silverstein, Samuel B., Strobl, M., Strothmann, M., Takibayev, A., Wagner, R., Willendrup, P., Xu, S., Yiu, S. C., Zanini, L., and Zimmer, O.

Abstract

The European Spallation Source (ESS), presently under construction in Lund, Sweden, is a multidisciplinary international laboratory that, once completed at full specifications, will operate the world's most powerful pulsed neutron source. Supported by a 3 M Euro Research and Innovation Action within the European Union Horizon 2020 program, a design study (HighNESS) is now underway to develop a second neutron source located below the spallation target. Compared to the first source, which is located above the spallation target and designed for high cold and thermal brightness, the new source is being optimized to deliver higher intensity and a shift to longer wavelengths in the spectral regions of cold neutrons (CNs) (2 to 20 & Aring;), very cold neutrons (VCNs) (10 to 120 & Aring;), and ultracold neutrons (UCNs) (> 500 & Aring;). The second source consists of a large liquid deuterium moderator to deliver CNs and serve secondary VCN and UCN sources, for which different options are under study. These new sources will boost several areas of condensed matter research and will provide unique opportunities in fundamental physics. The HighNESS project is now entering its last year, and we are working toward the Conceptual Design Report of the ESS upgrade. In this paper, results obtained in the first 2 years, ongoing developments, and future perspectives are described.

Published
2024
Full Text
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13. HighNESS conceptual design report:Volume II. the NNBAR experiment.

Author

Santoro, V., Abou El Kheir, O., Acharya, D., Akhyani, M., Andersen, K. H., Barrow, J., Bentley, P., Bernasconi, M., Bertelsen, M., Beßler, Y., Bianchi, A., Brooijmans, G., Broussard, L., Brys, T., Busi, M., Campi, D., Chambon, A., Chen, J., Czamler, V., Deen, P., Dijulio, D. D., Dian, E., Draskovits, L., Dunne, K., El Barbari, M., Ferreira, M. J., Fierlinger, P., Fröst, V. T., Folsom, B. T., Friman-Gayer, U., Gaye, A., Gorini, G., Gustafsson, A., Gutberlet, T., Happe, C., Han, X., Hartl, M., Holl, M., Jackson, A., Kemp, E., Kamyshkov, Y., Kittelmann, T., Klinkby, E. B., Kolevatov, R., Laporte, S. I., Lauritzen, B., Lejon, W., Linander, R., Lindroos, M., Marko, M., Márquez Damián, J. I., McClanahan, T. C., Meirose, B., Mezei, F., Michel, K., Milstead, D., Muhrer, G., Nepomuceno, A., Neshvizhevsky, V., Nilsson, T., Odén, U., Plivelic, T., Ramic, K., Rataj, B., Remec, I., Rizzi, N., Rogers, J., Rosenthal, E., Rosta, L., Rücker, U., Samothrakitis, S., Schreyer, A., Selknaes, J. R., Shuai, H., Silverstein, S., Snow, W. M., Strobl, M., Strothmann, M., Takibayev, A., Wagner, R., Willendrup, P., Xu, S., Yiu, S. C., Yngwe, L., Young, A. R., Wolke, M., Zakalek, P., Zavorka, L., Zanini, L., Zimmer, O., Santoro, V., Abou El Kheir, O., Acharya, D., Akhyani, M., Andersen, K. H., Barrow, J., Bentley, P., Bernasconi, M., Bertelsen, M., Beßler, Y., Bianchi, A., Brooijmans, G., Broussard, L., Brys, T., Busi, M., Campi, D., Chambon, A., Chen, J., Czamler, V., Deen, P., Dijulio, D. D., Dian, E., Draskovits, L., Dunne, K., El Barbari, M., Ferreira, M. J., Fierlinger, P., Fröst, V. T., Folsom, B. T., Friman-Gayer, U., Gaye, A., Gorini, G., Gustafsson, A., Gutberlet, T., Happe, C., Han, X., Hartl, M., Holl, M., Jackson, A., Kemp, E., Kamyshkov, Y., Kittelmann, T., Klinkby, E. B., Kolevatov, R., Laporte, S. I., Lauritzen, B., Lejon, W., Linander, R., Lindroos, M., Marko, M., Márquez Damián, J. I., McClanahan, T. C., Meirose, B., Mezei, F., Michel, K., Milstead, D., Muhrer, G., Nepomuceno, A., Neshvizhevsky, V., Nilsson, T., Odén, U., Plivelic, T., Ramic, K., Rataj, B., Remec, I., Rizzi, N., Rogers, J., Rosenthal, E., Rosta, L., Rücker, U., Samothrakitis, S., Schreyer, A., Selknaes, J. R., Shuai, H., Silverstein, S., Snow, W. M., Strobl, M., Strothmann, M., Takibayev, A., Wagner, R., Willendrup, P., Xu, S., Yiu, S. C., Yngwe, L., Young, A. R., Wolke, M., Zakalek, P., Zavorka, L., Zanini, L., and Zimmer, O.

Abstract

A key aim of the HighNESS project for the European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report for the NNBAR experiment. NNBAR would exploit a new cold lower moderator to make the first search in over thirty years for free neutrons converting to anti-neutrons. The observation of such a baryon-number-violating signature would be of fundamental significance and tackle open questions in modern physics, including the origin of the matter-antimatter asymmetry. This report shows the design of the beamline, supermirror focusing system, magnetic and radiation shielding, and anti-neutron detector necessary for the experiment. A range of simulation programs are employed to quantify the performance of the experiment and show how background can be suppressed. For a search with full background suppression, a sensitivity improvement of three orders of magnitude is expected, as compared with the previous search. Civil engineering studies for the NNBAR beamline are also shown, as is a costing model for the experiment.

Published
2024

14. The HighNESS Project at the European Spallation Source: Current Status and Future Perspectives

Author

Santoro, V, Andersen, K, Bentley, P, Bernasconi, M, Bertelsen, M, Bessler, Y, Bianchi, A, Brys, T, Campi, D, Chambon, A, Czamler, V, Di Julio, D, Dian, E, Dunne, K, Ferreira, M, Fierlinger, P, Friman-Gayer, U, Folsom, B, Gaye, A, Gorini, G, Happe, C, Holl, M, Kamyshkov, Y, Kittelmann, T, Klinkby, E, Kolevatov, R, Laporte, S, Lauritzen, B, Marquez Damian, J, Meirose, B, Mezei, F, Milstead, D, Muhrer, G, Neshvizhevsky, V, Rataj, B, Rizzi, N, Rosta, L, Samothrakitis, S, Schober, H, Selknaes, J, Silverstein, S, Strobl, M, Strothmann, M, Takibayev, A, Wagner, R, Willendrup, P, Xu, S, Yiu, S, Zanini, L, Zimmer, O, Santoro V., Andersen K. H., Bentley P., Bernasconi M., Bertelsen M., Bessler Y., Bianchi A., Brys T., Campi D., Chambon A., Czamler V., Di Julio D. D., Dian E., Dunne K., Ferreira M. J., Fierlinger P., Friman-Gayer U., Folsom B. T., Gaye A., Gorini G., Happe C., Holl M., Kamyshkov Y., Kittelmann T., Klinkby E. B., Kolevatov R., Laporte S. I., Lauritzen B., Marquez Damian J. I., Meirose B., Mezei F., Milstead D., Muhrer G., Neshvizhevsky V., Rataj B., Rizzi N., Rosta L., Samothrakitis S., Schober H., Selknaes J. R., Silverstein S., Strobl M., Strothmann M., Takibayev A., Wagner R., Willendrup P., Xu S., Yiu S. C., Zanini L., Zimmer O., Santoro, V, Andersen, K, Bentley, P, Bernasconi, M, Bertelsen, M, Bessler, Y, Bianchi, A, Brys, T, Campi, D, Chambon, A, Czamler, V, Di Julio, D, Dian, E, Dunne, K, Ferreira, M, Fierlinger, P, Friman-Gayer, U, Folsom, B, Gaye, A, Gorini, G, Happe, C, Holl, M, Kamyshkov, Y, Kittelmann, T, Klinkby, E, Kolevatov, R, Laporte, S, Lauritzen, B, Marquez Damian, J, Meirose, B, Mezei, F, Milstead, D, Muhrer, G, Neshvizhevsky, V, Rataj, B, Rizzi, N, Rosta, L, Samothrakitis, S, Schober, H, Selknaes, J, Silverstein, S, Strobl, M, Strothmann, M, Takibayev, A, Wagner, R, Willendrup, P, Xu, S, Yiu, S, Zanini, L, Zimmer, O, Santoro V., Andersen K. H., Bentley P., Bernasconi M., Bertelsen M., Bessler Y., Bianchi A., Brys T., Campi D., Chambon A., Czamler V., Di Julio D. D., Dian E., Dunne K., Ferreira M. J., Fierlinger P., Friman-Gayer U., Folsom B. T., Gaye A., Gorini G., Happe C., Holl M., Kamyshkov Y., Kittelmann T., Klinkby E. B., Kolevatov R., Laporte S. I., Lauritzen B., Marquez Damian J. I., Meirose B., Mezei F., Milstead D., Muhrer G., Neshvizhevsky V., Rataj B., Rizzi N., Rosta L., Samothrakitis S., Schober H., Selknaes J. R., Silverstein S., Strobl M., Strothmann M., Takibayev A., Wagner R., Willendrup P., Xu S., Yiu S. C., Zanini L., and Zimmer O.

Abstract

The European Spallation Source (ESS), presently under construction in Lund, Sweden, is a multidisciplinary international laboratory that, once completed at full specifications, will operate the world’s most powerful pulsed neutron source. Supported by a 3 M Euro Research and Innovation Action within the European Union Horizon 2020 program, a design study (HighNESS) is now underway to develop a second neutron source located below the spallation target. Compared to the first source, which is located above the spallation target and designed for high cold and thermal brightness, the new source is being optimized to deliver higher intensity and a shift to longer wavelengths in the spectral regions of cold neutrons (CNs) (2 to 20 Å), very cold neutrons (VCNs) (10 to 120 Å), and ultracold neutrons (UCNs) ((Formula presented.) 500 Å). The second source consists of a large liquid deuterium moderator to deliver CNs and serve secondary VCN and UCN sources, for which different options are under study. These new sources will boost several areas of condensed matter research and will provide unique opportunities in fundamental physics. The HighNESS project is now entering its last year, and we are working toward the Conceptual Design Report of the ESS upgrade. In this paper, results obtained in the first 2 years, ongoing developments, and future perspectives are described.

Published
2023

15. Particle physics at the European Spallation Source

Author

Abele, H, Alekou, A, Algora, A, Andersen, K, Baessler, S, Barron-Palos, L, Barrow, J, Baussan, E, Bentley, P, Berezhiani, Z, Bessler, Y, Bhattacharyya, A, Bianchi, A, Bijnens, J, Blanco, C, Kraljevic, N, Blennow, M, Bodek, K, Bogomilov, M, Bohm, C, Bolling, B, Bouquerel, E, Brooijmans, G, Broussard, L, Buchan, O, Burgman, A, Calen, H, Carlile, C, Cederkall, J, Chanel, E, Christiansen, P, Cirigliano, V, Collar, J, Collins, M, Crawford, C, Morales, E, Cupial, P, D'Alessi, L, Damian, J, Danared, H, Dancila, D, de Andre, J, Delahaye, J, Degenkolb, S, Di Julio, D, Dracos, M, Dunne, K, Efthymiopoulos, I, Ekelof, T, Eklund, L, Eshraqi, M, Esteban, I, Fanourakis, G, Farricker, A, Fernandez-Martinez, E, Ferreira, M, Fertl, M, Fierlinger, P, Folsom, B, Frank, A, Fratangelo, A, Friman-Gayer, U, Fukuda, T, Fynbo, H, Sosa, A, Gazis, N, Galnander, B, Geralis, T, Ghosh, M, Gokbulut, G, Gomez-Cadenas, J, Gonzalez-Alonso, M, Gonzalez, F, Halic, L, Happe, C, Heil, P, Heinz, A, Herde, H, Holl, M, Jenke, T, Jenssen, M, Jericha, E, Johansson, H, Johansson, R, Johansson, T, Kamyshkov, Y, Topaksu, A, Kildetoft, B, Kirch, K, Klicek, B, Klinkby, E, Kolevatov, R, Konrad, G, Koziol, M, Krhac, K, Kupsc, A, Lacny, L, Larizgoitia, L, Lewis, C, Lindroos, M, Lychagin, E, Lytken, E, Maiano, C, Marciniewski, P, Markaj, G, Markisch, B, Marrelli, C, Martins, C, Meirose, B, Mezzetto, M, Milas, N, Milstead, D, Monrabal, F, Muhrer, G, Nepomuceno, A, Nesvizhevsky, V, Nilsson, T, Novella, P, Oglakci, M, Ohlsson, T, Olvegard, M, Oskarsson, A, Ota, T, Park, J, Patrzalek, D, Perrey, H, Persoz, M, Petkov, G, Piegsa, F, Pistillo, C, Poussot, P, Privitera, P, Rataj, B, Ries, D, Rizzi, N, Rosauro-Alcaraz, S, Rozpedzik, D, Saiang, D, Santoro, V, Schmidt, U, Schober, H, Schulthess, I, Silverstein, S, Simon, A, Sina, H, Snamina, J, Snow, W, Soldner, T, Stavropoulos, G, Stipcevic, M, Szybinski, B, Takibayev, A, Tang, Z, Tarkeshian, R, Theroine, C, Thorne, J, Terranova, F, Thomas, J, Tolba, T, Torres-Sanchez, P, Trachanas, E, Tsenov, R, Uggerhoj, U, Vankova-Kirilova, G, Vassilopoulos, N, Wagner, R, Wang, X, Wildner, E, Wolke, M, Wurtz, J, Yiu, S, Yoon, S, Young, A, Zanini, L, Zejma, J, Zerzion, D, Zimmer, O, Zormpa, O, Zou, Y, Abele H., Alekou A., Algora A., Andersen K., Baessler S., Barron-Palos L., Barrow J., Baussan E., Bentley P., Berezhiani Z., Bessler Y., Bhattacharyya A. K., Bianchi A., Bijnens J., Blanco C., Kraljevic N. B., Blennow M., Bodek K., Bogomilov M., Bohm C., Bolling B., Bouquerel E., Brooijmans G., Broussard L. J., Buchan O., Burgman A., Calen H., Carlile C. J., Cederkall J., Chanel E., Christiansen P., Cirigliano V., Collar J. I., Collins M., Crawford C. B., Morales E. C., Cupial P., D'Alessi L., Damian J. I. M., Danared H., Dancila D., de Andre J. P. A. M., Delahaye J. P., Degenkolb S., Di Julio D. D., Dracos M., Dunne K., Efthymiopoulos I., Ekelof T., Eklund L., Eshraqi M., Esteban I., Fanourakis G., Farricker A., Fernandez-Martinez E., Ferreira M. J., Fertl M., Fierlinger P., Folsom B., Frank A., Fratangelo A., Friman-Gayer U., Fukuda T., Fynbo H. O. U., Sosa A. G., Gazis N., Galnander B., Geralis T., Ghosh M., Gokbulut G., Gomez-Cadenas J. J., Gonzalez-Alonso M., Gonzalez F., Halic L., Happe C., Heil P., Heinz A., Herde H., Holl M., Jenke T., Jenssen M., Jericha E., Johansson H. T., Johansson R., Johansson T., Kamyshkov Y., Topaksu A. K., Kildetoft B., Kirch K., Klicek B., Klinkby E., Kolevatov R., Konrad G., Koziol M., Krhac K., Kupsc A., Lacny L., Larizgoitia L., Lewis C. M., Lindroos M., Lychagin E., Lytken E., Maiano C., Marciniewski P., Markaj G., Markisch B., Marrelli C., Martins C., Meirose B., Mezzetto M., Milas N., Milstead D., Monrabal F., Muhrer G., Nepomuceno A., Nesvizhevsky V., Nilsson T., Novella P., Oglakci M., Ohlsson T., Olvegard M., Oskarsson A., Ota T., Park J., Patrzalek D., Perrey H., Persoz M., Petkov G., Piegsa F. M., Pistillo C., Poussot P., Privitera P., Rataj B., Ries D., Rizzi N., Rosauro-Alcaraz S., Rozpedzik D., Saiang D., Santoro V., Schmidt U., Schober H., Schulthess I., Silverstein S., Simon A., Sina H., Snamina J., Snow W. M., Soldner T., Stavropoulos G., Stipcevic M., Szybinski B., Takibayev A., Tang Z., Tarkeshian R., Theroine C., Thorne J., Terranova F., Thomas J., Tolba T., Torres-Sanchez P., Trachanas E., Tsenov R., Uggerhoj U. I., Vankova-Kirilova G., Vassilopoulos N., Wagner R., Wang X., Wildner E., Wolke M., Wurtz J., Yiu S. C., Yoon S. G., Young A. R., Zanini L., Zejma J., Zerzion D., Zimmer O., Zormpa O., Zou Y., Abele, H, Alekou, A, Algora, A, Andersen, K, Baessler, S, Barron-Palos, L, Barrow, J, Baussan, E, Bentley, P, Berezhiani, Z, Bessler, Y, Bhattacharyya, A, Bianchi, A, Bijnens, J, Blanco, C, Kraljevic, N, Blennow, M, Bodek, K, Bogomilov, M, Bohm, C, Bolling, B, Bouquerel, E, Brooijmans, G, Broussard, L, Buchan, O, Burgman, A, Calen, H, Carlile, C, Cederkall, J, Chanel, E, Christiansen, P, Cirigliano, V, Collar, J, Collins, M, Crawford, C, Morales, E, Cupial, P, D'Alessi, L, Damian, J, Danared, H, Dancila, D, de Andre, J, Delahaye, J, Degenkolb, S, Di Julio, D, Dracos, M, Dunne, K, Efthymiopoulos, I, Ekelof, T, Eklund, L, Eshraqi, M, Esteban, I, Fanourakis, G, Farricker, A, Fernandez-Martinez, E, Ferreira, M, Fertl, M, Fierlinger, P, Folsom, B, Frank, A, Fratangelo, A, Friman-Gayer, U, Fukuda, T, Fynbo, H, Sosa, A, Gazis, N, Galnander, B, Geralis, T, Ghosh, M, Gokbulut, G, Gomez-Cadenas, J, Gonzalez-Alonso, M, Gonzalez, F, Halic, L, Happe, C, Heil, P, Heinz, A, Herde, H, Holl, M, Jenke, T, Jenssen, M, Jericha, E, Johansson, H, Johansson, R, Johansson, T, Kamyshkov, Y, Topaksu, A, Kildetoft, B, Kirch, K, Klicek, B, Klinkby, E, Kolevatov, R, Konrad, G, Koziol, M, Krhac, K, Kupsc, A, Lacny, L, Larizgoitia, L, Lewis, C, Lindroos, M, Lychagin, E, Lytken, E, Maiano, C, Marciniewski, P, Markaj, G, Markisch, B, Marrelli, C, Martins, C, Meirose, B, Mezzetto, M, Milas, N, Milstead, D, Monrabal, F, Muhrer, G, Nepomuceno, A, Nesvizhevsky, V, Nilsson, T, Novella, P, Oglakci, M, Ohlsson, T, Olvegard, M, Oskarsson, A, Ota, T, Park, J, Patrzalek, D, Perrey, H, Persoz, M, Petkov, G, Piegsa, F, Pistillo, C, Poussot, P, Privitera, P, Rataj, B, Ries, D, Rizzi, N, Rosauro-Alcaraz, S, Rozpedzik, D, Saiang, D, Santoro, V, Schmidt, U, Schober, H, Schulthess, I, Silverstein, S, Simon, A, Sina, H, Snamina, J, Snow, W, Soldner, T, Stavropoulos, G, Stipcevic, M, Szybinski, B, Takibayev, A, Tang, Z, Tarkeshian, R, Theroine, C, Thorne, J, Terranova, F, Thomas, J, Tolba, T, Torres-Sanchez, P, Trachanas, E, Tsenov, R, Uggerhoj, U, Vankova-Kirilova, G, Vassilopoulos, N, Wagner, R, Wang, X, Wildner, E, Wolke, M, Wurtz, J, Yiu, S, Yoon, S, Young, A, Zanini, L, Zejma, J, Zerzion, D, Zimmer, O, Zormpa, O, Zou, Y, Abele H., Alekou A., Algora A., Andersen K., Baessler S., Barron-Palos L., Barrow J., Baussan E., Bentley P., Berezhiani Z., Bessler Y., Bhattacharyya A. K., Bianchi A., Bijnens J., Blanco C., Kraljevic N. B., Blennow M., Bodek K., Bogomilov M., Bohm C., Bolling B., Bouquerel E., Brooijmans G., Broussard L. J., Buchan O., Burgman A., Calen H., Carlile C. J., Cederkall J., Chanel E., Christiansen P., Cirigliano V., Collar J. I., Collins M., Crawford C. B., Morales E. C., Cupial P., D'Alessi L., Damian J. I. M., Danared H., Dancila D., de Andre J. P. A. M., Delahaye J. P., Degenkolb S., Di Julio D. D., Dracos M., Dunne K., Efthymiopoulos I., Ekelof T., Eklund L., Eshraqi M., Esteban I., Fanourakis G., Farricker A., Fernandez-Martinez E., Ferreira M. J., Fertl M., Fierlinger P., Folsom B., Frank A., Fratangelo A., Friman-Gayer U., Fukuda T., Fynbo H. O. U., Sosa A. G., Gazis N., Galnander B., Geralis T., Ghosh M., Gokbulut G., Gomez-Cadenas J. J., Gonzalez-Alonso M., Gonzalez F., Halic L., Happe C., Heil P., Heinz A., Herde H., Holl M., Jenke T., Jenssen M., Jericha E., Johansson H. T., Johansson R., Johansson T., Kamyshkov Y., Topaksu A. K., Kildetoft B., Kirch K., Klicek B., Klinkby E., Kolevatov R., Konrad G., Koziol M., Krhac K., Kupsc A., Lacny L., Larizgoitia L., Lewis C. M., Lindroos M., Lychagin E., Lytken E., Maiano C., Marciniewski P., Markaj G., Markisch B., Marrelli C., Martins C., Meirose B., Mezzetto M., Milas N., Milstead D., Monrabal F., Muhrer G., Nepomuceno A., Nesvizhevsky V., Nilsson T., Novella P., Oglakci M., Ohlsson T., Olvegard M., Oskarsson A., Ota T., Park J., Patrzalek D., Perrey H., Persoz M., Petkov G., Piegsa F. M., Pistillo C., Poussot P., Privitera P., Rataj B., Ries D., Rizzi N., Rosauro-Alcaraz S., Rozpedzik D., Saiang D., Santoro V., Schmidt U., Schober H., Schulthess I., Silverstein S., Simon A., Sina H., Snamina J., Snow W. M., Soldner T., Stavropoulos G., Stipcevic M., Szybinski B., Takibayev A., Tang Z., Tarkeshian R., Theroine C., Thorne J., Terranova F., Thomas J., Tolba T., Torres-Sanchez P., Trachanas E., Tsenov R., Uggerhoj U. I., Vankova-Kirilova G., Vassilopoulos N., Wagner R., Wang X., Wildner E., Wolke M., Wurtz J., Yiu S. C., Yoon S. G., Young A. R., Zanini L., Zejma J., Zerzion D., Zimmer O., Zormpa O., and Zou Y.

Abstract

Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world's brightest neutron source. As such, it has the potential for a particle physics program with a unique reach and which is complementary to that available at other facilities. This paper describes proposed particle physics activities for the ESS. These encompass the exploitation of both the neutrons and neutrinos produced at the ESS for high precision (sensitivity) measurements (searches).

Published
2023

16. The HighNESS Project at the European Spallation Source: Current Status and Future Perspectives

Author

Santoro, V., primary, Andersen, K. H., additional, Bentley, P., additional, Bernasconi, M., additional, Bertelsen, M., additional, Beßler, Y., additional, Bianchi, A., additional, Brys, T., additional, Campi, D., additional, Chambon, A., additional, Czamler, V., additional, Di Julio, D. D., additional, Dian, E., additional, Dunne, K., additional, Ferreira, M. J., additional, Fierlinger, P., additional, Friman-Gayer, U., additional, Folsom, B. T., additional, Gaye, A., additional, Gorini, G., additional, Happe, C., additional, Holl, M., additional, Kamyshkov, Y., additional, Kittelmann, T., additional, Klinkby, E. B., additional, Kolevatov, R., additional, Laporte, S. I., additional, Lauritzen, B., additional, Marquez Damian, J. I., additional, Meirose, B., additional, Mezei, F., additional, Milstead, D., additional, Muhrer, G., additional, Neshvizhevsky, V., additional, Rataj, B., additional, Rizzi, N., additional, Rosta, L., additional, Samothrakitis, S., additional, Schober, H., additional, Selknaes, J. R., additional, Silverstein, S., additional, Strobl, M., additional, Strothmann, M., additional, Takibayev, A., additional, Wagner, R., additional, Willendrup, P., additional, Xu, S., additional, Yiu, S. C., additional, Zanini, L., additional, and Zimmer, O., additional

Published
2023
Full Text
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17. Particle physics at the European Spallation Source

Author

Abele, H., primary, Alekou, A., additional, Algora, A., additional, Andersen, K., additional, Baeßler, S., additional, Barron-Pálos, L., additional, Barrow, J., additional, Baussan, E., additional, Bentley, P., additional, Berezhiani, Z., additional, Beßler, Y., additional, Bhattacharyya, A.K., additional, Bianchi, A., additional, Bijnens, J., additional, Blanco, C., additional, Kraljevic, N. Blaskovic, additional, Blennow, M., additional, Bodek, K., additional, Bogomilov, M., additional, Bohm, C., additional, Bolling, B., additional, Bouquerel, E., additional, Brooijmans, G., additional, Broussard, L.J., additional, Buchan, O., additional, Burgman, A., additional, Calén, H., additional, Carlile, C.J., additional, Cederkall, J., additional, Chanel, E., additional, Christiansen, P., additional, Cirigliano, V., additional, Collar, J.I., additional, Collins, M., additional, Crawford, C.B., additional, Morales, E. Cristaldo, additional, Cupiał, P., additional, D’Alessi, L., additional, Damian, J.I. M., additional, Danared, H., additional, Dancila, D., additional, de André, J.P.A.M., additional, Delahaye, J.P., additional, Degenkolb, S., additional, Di Julio, D.D., additional, Dracos, M., additional, Dunne, K., additional, Efthymiopoulos, I., additional, Ekelöf, T., additional, Eklund, L., additional, Eshraqi, M., additional, Esteban, I., additional, Fanourakis, G., additional, Farricker, A., additional, Fernandez-Martinez, E., additional, Ferreira, M.J., additional, Fertl, M., additional, Fierlinger, P., additional, Folsom, B., additional, Frank, A., additional, Fratangelo, A., additional, Friman-Gayer, U., additional, Fukuda, T., additional, Fynbo, H.O.U., additional, Sosa, A. Garcia, additional, Gazis, N., additional, Gålnander, B., additional, Geralis, Th., additional, Ghosh, M., additional, Gokbulut, G., additional, Gomez-Cadenas, J.J., additional, Gonzalez-Alonso, M., additional, Gonzalez, F., additional, Halić, L., additional, Happe, C., additional, Heil, P., additional, Heinz, A., additional, Herde, H., additional, Holl, M., additional, Jenke, T., additional, Jenssen, M., additional, Jericha, E., additional, Johansson, H.T., additional, Johansson, R., additional, Johansson, T., additional, Kamyshkov, Y., additional, Topaksu, A. Kayis, additional, Kildetoft, B., additional, Kirch, K., additional, Kliček, B., additional, Klinkby, E., additional, Kolevatov, R., additional, Konrad, G., additional, Kozioł, M., additional, Krhač, K., additional, Kupść, A., additional, Łacny, Ł., additional, Larizgoitia, L., additional, Lewis, C.M., additional, Lindroos, M., additional, Lychagin, E., additional, Lytken, E., additional, Maiano, C., additional, Marciniewski, P., additional, Markaj, G., additional, Märkisch, B., additional, Marrelli, C., additional, Martins, C., additional, Meirose, B., additional, Mezzetto, M., additional, Milas, N., additional, Milstead, D., additional, Monrabal, F., additional, Muhrer, G., additional, Nepomuceno, A., additional, Nesvizhevsky, V., additional, Nilsson, T., additional, Novella, P., additional, Oglakci, M., additional, Ohlsson, T., additional, Olvegård, M., additional, Oskarsson, A., additional, Ota, T., additional, Park, J., additional, Patrzalek, D., additional, Perrey, H., additional, Persoz, M., additional, Petkov, G., additional, Piegsa, F.M., additional, Pistillo, C., additional, Poussot, P., additional, Privitera, P., additional, Rataj, B., additional, Ries, D., additional, Rizzi, N., additional, Rosauro-Alcaraz, S., additional, Rozpedzik, D., additional, Saiang, D., additional, Santoro, V., additional, Schmidt, U., additional, Schober, H., additional, Schulthess, I., additional, Silverstein, S., additional, Simón, A., additional, Sina, H., additional, Snamina, J., additional, Snow, W.M., additional, Soldner, T., additional, Stavropoulos, G., additional, Stipčević, M., additional, Szybiński, B., additional, Takibayev, A., additional, Tang, Z., additional, Tarkeshian, R., additional, Theroine, C., additional, Thorne, J., additional, Terranova, F., additional, Thomas, J., additional, Tolba, T., additional, Torres-Sánchez, P., additional, Trachanas, E., additional, Tsenov, R., additional, Uggerhøj, U.I., additional, Vankova-Kirilova, G., additional, Vassilopoulos, N., additional, Wagner, R., additional, Wang, X., additional, Wildner, E., additional, Wolke, M., additional, Wurtz, J., additional, Yiu, S.C., additional, Yoon, S.G., additional, Young, A.R., additional, Zanini, L., additional, Zejma, J., additional, Zerzion, D., additional, Zimmer, O., additional, Zormpa, O., additional, and Zou, Y., additional

Published
2023
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18. Particle physics at the European Spallation Source

Author

Abele, H., Alekou, A., Algora, A., Andersen, K., Baessler, S., Barron-Palos, L., Barrow, J., Baussan, E., Bentley, P., Berezhiani, Z., Bessler, Y., Bhattacharyya, A. K., Bianchi, A., Bijnens, J., Blanco, C., Kraljevic, N. Blaskovic, Blennow, M., Bodek, K., Bogomilov, M., Bohm, C., Bolling, B., Bouquerel, E., Brooijmans, G., Broussard, L. J., Buchan, O., Burgman, A., Calén, Hans, Carlile, Colin J., Cederkall, J., Chanel, E., Christiansen, P., Cirigliano, V., Collar, J. I., Collins, M., Crawford, C. B., Morales, E. Cristaldo, Cupial, P., D'Alessi, L., Damian, J. I. M., Danared, H., Dancila, Dragos, de Andre, J. P. A. M., Delahaye, J. P., Degenkolb, S., Di Julio, D. D., Dracos, M., Dunne, K., Efthymiopoulos, I., Ekelöf, Tord, Eklund, Lars, Eshraqi, M., Esteban, I., Fanourakis, G., Farricker, A., Fernandez-Martinez, E., Ferreira, J., Fertl, M., Fierlinger, P., Folsom, B., Frank, A., Fratangelo, A., Friman-Gayer, U., Fukuda, T., Fynbo, H. O. U., Sosa, A. Garcia, Gazis, N., Galnander, B., Geralis, Th., Ghosh, M., Gokbulut, G., Gomez-Cadenas, J. J., Gonzalez-Alonso, M., Gonzalez, F., Halic, L., Happe, C., Heil, P., Heinz, A., Herde, H., Holl, M., Jenke, T., Jenssen, M., Jericha, E., Johansson, H. T., Johansson, R., Johansson, Tord, Kamyshkov, Y., Topaksu, A. Kayis, Kildetoft, B., Kirch, K., Klicek, B., Klinkby, E., Kolevatov, R., Konrad, G., Koziol, M., Krhac, K., Kupść, Andrzej, Lacny, L., Larizgoitia, L., Lewis, C. M., Lindroos, M., Lychagin, E., Lytken, E., Maiano, C., Marciniewski, Pawel, Markaj, G., Markisch, B., Marrelli, C., Martins, C., Meirose, B., Mezzetto, M., Milas, N., Milstead, D., Monrabal, F., Muhrer, G., Nepomuceno, A., Nesvizhevsky, V., Nilsson, T., Novella, P., Oglakci, M., Ohlsson, T., Olvegård, Maja, Oskarsson, A., Ota, T., Park, J., Patrzalek, D., Perrey, H., Persoz, M., Petkov, G., Piegsa, F. M., Pistillo, C., Poussot, P., Privitera, P., Rataj, B., Ries, D., Rizzi, N., Rosauro-Alcaraz, S., Rozpedzik, D., Saiang, D., Santoro, V., Schmidt, U., Schober, H., Schulthess, I., Silverstein, S., Simon, A., Sina, H., Snamina, J., Snow, W. M., Soldner, T., Stavropoulos, G., Stipcevic, M., Szybinski, B., Takibayev, A., Tang, Z., Tarkeshian, R., Theroine, C., Thorne, J., Terranova, F., Thomas, J., Tolba, T., Torres-Sanchez, P., Trachanas, E., Tsenov, R., Uggerhoj, U. I., Vankova-Kirilova, G., Vassilopoulos, N., Wagner, R., Wang, X., Wildner, E., Wolke, Magnus, Wurtz, J., Yiu, S. C., Yoon, S. G., Young, A. R., Zanini, L., Zejma, J., Zerzion, D., Zimmer, O., Zormpa, O., Zou, Ye, Abele, H., Alekou, A., Algora, A., Andersen, K., Baessler, S., Barron-Palos, L., Barrow, J., Baussan, E., Bentley, P., Berezhiani, Z., Bessler, Y., Bhattacharyya, A. K., Bianchi, A., Bijnens, J., Blanco, C., Kraljevic, N. Blaskovic, Blennow, M., Bodek, K., Bogomilov, M., Bohm, C., Bolling, B., Bouquerel, E., Brooijmans, G., Broussard, L. J., Buchan, O., Burgman, A., Calén, Hans, Carlile, Colin J., Cederkall, J., Chanel, E., Christiansen, P., Cirigliano, V., Collar, J. I., Collins, M., Crawford, C. B., Morales, E. Cristaldo, Cupial, P., D'Alessi, L., Damian, J. I. M., Danared, H., Dancila, Dragos, de Andre, J. P. A. M., Delahaye, J. P., Degenkolb, S., Di Julio, D. D., Dracos, M., Dunne, K., Efthymiopoulos, I., Ekelöf, Tord, Eklund, Lars, Eshraqi, M., Esteban, I., Fanourakis, G., Farricker, A., Fernandez-Martinez, E., Ferreira, J., Fertl, M., Fierlinger, P., Folsom, B., Frank, A., Fratangelo, A., Friman-Gayer, U., Fukuda, T., Fynbo, H. O. U., Sosa, A. Garcia, Gazis, N., Galnander, B., Geralis, Th., Ghosh, M., Gokbulut, G., Gomez-Cadenas, J. J., Gonzalez-Alonso, M., Gonzalez, F., Halic, L., Happe, C., Heil, P., Heinz, A., Herde, H., Holl, M., Jenke, T., Jenssen, M., Jericha, E., Johansson, H. T., Johansson, R., Johansson, Tord, Kamyshkov, Y., Topaksu, A. Kayis, Kildetoft, B., Kirch, K., Klicek, B., Klinkby, E., Kolevatov, R., Konrad, G., Koziol, M., Krhac, K., Kupść, Andrzej, Lacny, L., Larizgoitia, L., Lewis, C. M., Lindroos, M., Lychagin, E., Lytken, E., Maiano, C., Marciniewski, Pawel, Markaj, G., Markisch, B., Marrelli, C., Martins, C., Meirose, B., Mezzetto, M., Milas, N., Milstead, D., Monrabal, F., Muhrer, G., Nepomuceno, A., Nesvizhevsky, V., Nilsson, T., Novella, P., Oglakci, M., Ohlsson, T., Olvegård, Maja, Oskarsson, A., Ota, T., Park, J., Patrzalek, D., Perrey, H., Persoz, M., Petkov, G., Piegsa, F. M., Pistillo, C., Poussot, P., Privitera, P., Rataj, B., Ries, D., Rizzi, N., Rosauro-Alcaraz, S., Rozpedzik, D., Saiang, D., Santoro, V., Schmidt, U., Schober, H., Schulthess, I., Silverstein, S., Simon, A., Sina, H., Snamina, J., Snow, W. M., Soldner, T., Stavropoulos, G., Stipcevic, M., Szybinski, B., Takibayev, A., Tang, Z., Tarkeshian, R., Theroine, C., Thorne, J., Terranova, F., Thomas, J., Tolba, T., Torres-Sanchez, P., Trachanas, E., Tsenov, R., Uggerhoj, U. I., Vankova-Kirilova, G., Vassilopoulos, N., Wagner, R., Wang, X., Wildner, E., Wolke, Magnus, Wurtz, J., Yiu, S. C., Yoon, S. G., Young, A. R., Zanini, L., Zejma, J., Zerzion, D., Zimmer, O., Zormpa, O., and Zou, Ye

Abstract

Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world’s brightest neutron source. As such, it has the potential for a particle physics program with a unique reach and which is complementary to that available at other facilities. This paper describes proposed particle physics activities for the ESS. These encompass the exploitation of both the neutrons and neutrinos produced at the ESS for high precision (sensitivity) measurements (searches).

Published
2023
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19. The HighNESS Project at the European Spallation Source: Current Status and Future Perspectives

Author

Santoro, V., Andersen, K. H., Bentley, P., Bernasconi, M., Bertelsen, M., Beßler, Y., Bianchi, A., Brys, T., Campi, D., Chambon, A., Czamler, V., Di Julio, D. D., Dian, E., Dunne, K., Ferreira, M. J., Fierlinger, P., Friman-Gayer, U., Folsom, B. T., Gaye, A., Gorini, G., Happe, C., Holl, M., Kamyshkov, Y., Kittelmann, T., Klinkby, E. B., Kolevatov, R., Laporte, S. I., Lauritzen, B., Marquez Damian, J. I., Meirose, B., Mezei, F., Milstead, D., Muhrer, G., Neshvizhevsky, V., Rataj, B., Rizzi, N., Rosta, L., Samothrakitis, S., Schober, H., Selknaes, J. R., Silverstein, S., Strobl, M., Strothmann, M., Takibayev, A., Wagner, R., Willendrup, P., Xu, S., Yiu, S. C., Zanini, L., Zimmer, O., Santoro, V., Andersen, K. H., Bentley, P., Bernasconi, M., Bertelsen, M., Beßler, Y., Bianchi, A., Brys, T., Campi, D., Chambon, A., Czamler, V., Di Julio, D. D., Dian, E., Dunne, K., Ferreira, M. J., Fierlinger, P., Friman-Gayer, U., Folsom, B. T., Gaye, A., Gorini, G., Happe, C., Holl, M., Kamyshkov, Y., Kittelmann, T., Klinkby, E. B., Kolevatov, R., Laporte, S. I., Lauritzen, B., Marquez Damian, J. I., Meirose, B., Mezei, F., Milstead, D., Muhrer, G., Neshvizhevsky, V., Rataj, B., Rizzi, N., Rosta, L., Samothrakitis, S., Schober, H., Selknaes, J. R., Silverstein, S., Strobl, M., Strothmann, M., Takibayev, A., Wagner, R., Willendrup, P., Xu, S., Yiu, S. C., Zanini, L., and Zimmer, O.

Abstract

The European Spallation Source (ESS), presently under construction in Lund, Sweden, is a multidisciplinary international laboratory that, once completed at full specifications, will operate the world’s most powerful pulsed neutron source. Supported by a 3 M Euro Research and Innovation Action within the European Union Horizon 2020 program, a design study (HighNESS) is now underway to develop a second neutron source located below the spallation target. Compared to the first source, which is located above the spallation target and designed for high cold and thermal brightness, the new source is being optimized to deliver higher intensity and a shift to longer wavelengths in the spectral regions of cold neutrons (CNs) (2 to 20 Å), very cold neutrons (VCNs) (10 to 120 Å), and ultracold neutrons (UCNs) (>500 Å). The second source consists of a large liquid deuterium moderator to deliver CNs and serve secondary VCN and UCN sources, for which different options are under study. These new sources will boost several areas of condensed matter research and will provide unique opportunities in fundamental physics. The HighNESS project is now entering its last year, and we are working toward the Conceptual Design Report of the ESS upgrade. In this paper, results obtained in the first 2 years, ongoing developments, and future perspectives are described.

Published
2023

20. The development of the NNBAR experiment

Author

Backman, F., primary, Barrow, J., additional, Beßler, Y., additional, Bianchi, A., additional, Bohm, C., additional, Brooijmans, G., additional, Calen, H., additional, Cederkäll, J., additional, Damian, J.I.M., additional, Dian, E., additional, Di Julio, D.D., additional, Dunne, K., additional, Eklund, L., additional, Ferreira, M.J., additional, Fierlinger, P., additional, Friman-Gayer, U., additional, Happe, C., additional, Holl, M., additional, Johansson, T., additional, Kamyshkov, Y., additional, Klinkby, E., additional, Kolevatov, R., additional, Kupsc, A., additional, Meirose, B., additional, Milstead, D., additional, Nepomuceno, A., additional, Nilsson, T., additional, Oskarsson, A., additional, Perrey, H., additional, Ramic, K., additional, Rataj, B., additional, Rizzi, N., additional, Santoro, V., additional, Silverstein, S., additional, Snow, W.M., additional, Takibayev, A., additional, Wagner, R., additional, Wolke, M., additional, Yiu, S.C., additional, Young, A.R., additional, Zanini, L., additional, and Zimmer, O., additional

Published
2022
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21. Isotope-selective radiography and material assay using high-brilliance, quasi-monochromatic, high-energy photons.

Author

Jentschel M, Albert F, Buslaps T, Friman-Gayer U, Honkimaki V, Mertes L, Pollitt AJ, Mutti P, Pietralla N, and Barty CPJ

Abstract

We demonstrate the possibility to directly detect microgram amounts of the isotope 7 L i using a quasi-monochromatic high-energy photon beam. The isotope selective detection is based on a witness scatterer absorbing and re-emitting photons via nuclear resonance fluorescence. This enables the detection of isotopes with microgram accuracy at long distances from the actual sample. Further, we demonstrate that the technique can deliver quantitative information without specific knowledge of the photon flux and no spectral capabilities or knowledge of the resonance fluorescence cross section. Detection of low-atomic-weight isotopes screened by heavy shielding is also shown. The techniques described are applicable to all next-generation, ultrahigh brilliance, laser-Compton light sources currently under construction.

Published
2022
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