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    Wyświetlanie 1-9 z 9
    Tytuł:
    Novel high intensity gamma-source at CERN : the gamma factory initiative
    Autorzy:
    Płaczek, Wiesław
    Serafini, L.
    Zanetti, M.
    Curatolo, C.
    Krasny, M. W.
    Opis:
    Collisions of Partially Stripped Ions (PSI) with laser light to produce high intensity gamma-ray beams are the backbone of the Gamma Factory (GF) initiative. The source, if realised at LHC, could significantly push up the intensity limits of the presently operating ones, reaching the flux of the order of 10^17 photons/s, in the particularly interesting gamma-ray energy domain of 1 to 400 MeV. The unprecedented-intensity, energy-tuned gamma beams, together with the gamma-beams-driven secondary beams of polarized positrons, polarized muons, neutrinos, neutrons and radioactive ions would constitute the basic research tools of the proposed Gamma Factory. We discuss the GF concept and the preliminary estimates of the emitted gamma beams phase spaces given by two newly developed Monte Carlo codes which simulate the PSI-laser interactions.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    The CERN gamma factory initiative : an ultra-high intensity gamma source
    Autorzy:
    Stoehlker, T.
    Alikhanyan, A. I.
    Wu, Y. K.
    Goddard, B.
    Jowett, J. M.
    Lebedev, P. N.
    Budker, D.
    Castelli, F.
    Weber, G.
    Petrillo, V.
    Alemany Fernandez, R.
    Petrenko, A.
    Schaumann, M.
    Zomer, F.
    Chaikovska, I.
    Kroeger, F.
    Dzierżęga, Krzysztof
    Czodrowski, P.
    Bieroń, Jacek
    Antsiferov, P. S.
    Yin-Vallgren, C.
    Chehab, R.
    Cassou, K.
    Apyan, A.
    Bartosik, H.
    Hirlander, S.
    Pustelny, Szymon
    Kersevan, R.
    Shevelko, V. P.
    Dupraz, K.
    Curatolo, C.
    Krasny, M. W.
    Biancacci, N.
    Manglunki, D.
    Zolotorev, M. S.
    Bessonov, E. G.
    Lamont, M.
    Kowalska, M.
    Zimmermann, F.
    Płaczek, Wiesław
    Martens, A.
    Serafini, L.
    Wydawca:
    Joint Accelerator Conferences Website
    Opis:
    This contribution discusses the possibility of broadening the present CERN research programme making use of a novel concept of light source. The proposed, Partially Stripped Ion beam driven, light source is the backbone of the Gamma Factory (GF) initiative. It could be realized at CERN by using the infrastructure of the already existing accelerators. It could push the intensity limits of the presently operating light-sources by up to 7 orders of magnitude, reaching fluxes of 10¹⁷ photons/s in the interesting gamma-ray energy domain between 1 MeV and 400 MeV. The GF light-source cannot be replaced, in this energy domain, by a FEL source as long as the multi TeV electron beams are not available. Its intensity is beyond the reach of the Inverse Compton Scattering sources. The unprecedented-intensity, energy-tuned gamma beams, together with the gamma-beams-driven secondary beams of polarized leptons, neutrinos, neutrons and radioactive ions are the basic research tools of the proposed Gamma Factory. A broad spectrum of new opportunities, in a vast domain of uncharted fundamental and applied physics territories, could be opened by the Gamma Factory research programme.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Gamma factory at CERN : design of a proof-of-principle experiment
    Autorzy:
    Derevianko, A.
    Goddard, B.
    Bruce, R.
    Bogacz, A.
    Fedosseev, V. N.
    Schaumann, M.
    Apyan, A.
    Stoehlker, T.
    Martens, A.
    Manglunki, D.
    Pustelny, Szymon
    Krasny, M. W.
    Alden, S. E.
    Bessonov, E. G.
    Zomer, F.
    Biancacci, N.
    Cassou, K.
    Dupraz, K.
    Kowalska, M.
    Bieroń, Jacek
    Dutheil, Y.
    Bosco, A.
    Molson, J.
    Hirlaender, S.
    Chaikovska, I.
    Budker, D.
    Curatolo, C.
    Jowett, J. M.
    Nevay, L. J.
    Wu, Y. K.
    Serafini, L.
    Petrenko, A.
    Kersevan, R.
    Dzierżęga, Krzysztof
    Bartosik, H.
    Petrillo, V.
    Alemany-Fernandez, R.
    Płaczek, Wiesław
    Czodrowski, P.
    Zimmermann, F.
    Weber, G.
    Kroeger, F.
    Shevelko, V.
    Sapinski, M.
    Castelli, F.
    Gibson, S. M.
    Zolotorev, M.
    Lamont, M.
    Wydawca:
    JACoW Publishing
    Opis:
    The Gamma Factory (GF) initiative proposes to create novel research tools at CERN by producing, accelerating and storing highly relativistic partially stripped ion beams in the LHC rings and by exciting their atomic degrees of freedom by lasers, to produce high-energy photon beams. Their intensity would be several orders of magnitude higher than those of the presently operating light sources in the particularly interesting gamma-ray energy domain reaching up to 400 MeV. In this energy domain, the high-intensity photon beams can be used to produce secondary beams of polarized electrons, polarized positrons, polarized muons, neutrinos, neutrons and radioactive ions. Over the years 2017-2018 we have demonstrated that these partially stripped ion beams can be successfully produced, accelerated and stored in the CERN accelerator complex, including the LHC. The next step of the project is to build a proof of principle experiment in the SPS to validate the principal GF concepts. This contribution will present the initial conceptual design of this experiment along with its main challenge - the demonstration of the fast cooling method of partially stripped ion beams.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Gamma Factory for CERN initiative : progress report
    Autorzy:
    Stoehlker, T.
    Velotti, F. M.
    Lefevre, T.
    Sapinski, M.
    Surzhykov, A.
    Dutheil, Y.
    Wu, Y. K.
    Goddard, B.
    Molson, J.
    Tolstikhina, I.
    Budker, D.
    Castelli, F.
    Weber, G.
    Nevay, L. J.
    Derevianko, A.
    Kuchler, D.
    Petrillo, V.
    Alemany Fernandez, R.
    Petrenko, A.
    Schaumann, M.
    Zomer, F.
    Chaikovska, I.
    Krasny, M.
    Abramov, A.
    Bogacz, A.
    Kroeger, F.
    Dzierżęga, Krzysztof
    Czodrowski, P.
    Naturelli, D.
    Bessonov, E.
    Bieroń, Jacek
    Gorzawski, A.
    Redaelli, S.
    Alden, S.
    Scrivens, R.
    Rochester, S.
    Bosco, A.
    Cassou, K.
    Gibson, S.
    Marsh, B.
    Peinaud, Y.
    Apyan, A.
    Antsiferov, P.
    Jowett, J.
    Bartosik, H.
    Hirlander, S.
    Pustelny, Szymon
    Yin Vallgren, C.
    Kersevan, R.
    Zanetti, M.
    Bruce, R.
    Zolotorev, M.
    Dupraz, K.
    Curatolo, C.
    Shevelko, V.
    Biancacci, N.
    Manglunki, D.
    Fedosseev, V.
    Lamont, M.
    Kowalska, M.
    Płaczek, Wiesław
    Zimmermann, F.
    Martens, A.
    Fuster Martinez, N.
    Serafini, L.
    Opis:
    The Gamma Factory (GF) initiative proposes to use partially stripped ion (PSI) beams as drivers of a new type of high-intensity and high-energy (0.1–400 MeV) photon source. As part of the ongoing Physics Beyond Collider studies, initial beam tests were carried out in 2017 and 2018 at the SPS and LHC with partially stripped xenon and lead beams. This contribution discusses the results of these tests and the preparations for the next GF R&D step: the proof-of-principle experiment at the SPS to study interaction of PSI beams with the laser light.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    The Gamma Factory Project at CERN : a new generation of research tools made of light
    Autorzy:
    Derevianko, A.
    Nutarelli, D.
    Antsiferov, P. S.
    Goddard, B.
    Lefevre, T.
    Tolstikhina, I.
    Bruce, R.
    Gorzawski, A.
    Zolotorev, M. S.
    Bogacz, A.
    Peinaud, Y.
    Martens, A.
    Schaumann, M.
    Apyan, A.
    Redaelli, S.
    Pustelny, Szymon
    Manglunki, D.
    Stoehlker, T.
    Krasny, M. W.
    Alden, S. E.
    Bessonov, E. G.
    Zomer, F.
    Biancacci, N.
    Cassou, K.
    Dupraz, K.
    Kowalska, M.
    Bieroń, Jacek
    Bosco, A.
    Dutheil, Y.
    Yin-Vallgren, C.
    Molson, J.
    Surzhykov, A.
    Chaikovska, I.
    Velotti, F.
    Zanetti, M.
    Budker, D.
    Curatolo, C.
    Fedosseev, V.
    Jowett, J. M.
    Nevay, L. J.
    Wu, Y. K.
    Marsh, B.
    Abramov, A.
    Serafini, L.
    Shevelko, V. P.
    Petrenko, A.
    Kuchler, D.
    Scrivens, R.
    Kersevan, R.
    Dzierżęga, Krzysztof
    Hirlander, S.
    Fuster Martinez, N.
    Bartosik, H.
    Płaczek, Wiesław
    Petrillo, V.
    Czodrowski, P.
    Zimmermann, F.
    Weber, G.
    Kroeger, F.
    Sapinski, M.
    Castelli, F.
    Gibson, S. M.
    Rochester, S.
    Lamont, M.
    Alemany Fernandez, R.
    Opis:
    The Gamma Factory project offers the possibility of creating novel research tools by producing relativistic beams of highly ionised atoms in CERN’s accelerator complex and exciting their atomic degrees of freedom by lasers to produce strongly collimated high-energy photon beams. Intensity of such beams would exceed by several orders of magnitude the ones offered by the presently operating light sources, in the particularly interesting energy domain from about 100 keV to above 400 MeV. In this energy regime, the high-intensity photon beams can be used to produce secondary beams of polarised electrons, polarised positrons, polarised muons, neutrinos, neutrons and radioactive ions. New research opportunities in many domains of physics, from particle physics through nuclear physics to atomic physics, can be opened by the Gamma Factory scientific programme based on the above primary and secondary beams. Except for basic research, it offers also a possibility for various application studies, e.g. in medical physics and nuclear power.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    First results on the search for lepton number violating neutrinoless double-$\beta$ decay with the LEGEND-200 experiment
    Autorzy:
    Deckert, R.
    Ianni, A.
    Rumyantseva, N.
    Solomon, J. A.
    Kidd, M. F.
    Kontul, I.
    Ramachers, Y. A.
    Vogl, C.
    Nemchenok, I.
    Mazumdar, A.
    Krause, P.
    Chernogorov, A.
    Junker, M.
    Romo-Luque, C.
    Radford, D. C.
    Love, A.
    Ruland, T. J.
    Martin, E. L.
    Sousa, A. C.
    Lindner, M.
    Ackermann, N.
    Slavíčková, M.
    Lehnert, B.
    Alexander, A.
    Kilgus, K.
    Bos, B.
    Hagemann, F.
    Rielage, K.
    Schwarz, M.
    Varriano, L. J.
    Lin, Y.-R.
    Pruckner, M.
    Ye, T.
    Canonica, L.
    Turqueti, M.
    Zinatulina, D.
    von Sturm, K.
    Bezrukov, L.
    Piseri, P.
    Sterr, T.
    Lay, N. N. P. N.
    Vasilyev, S.
    Giri, S.
    Calgaro, S.
    Gruszko, J.
    Simonaitis-Boyd, S.
    Chan, Y.-D.
    Dong, K.-M.
    McDowell, G.
    Howe, M. A.
    Smolnikov, A.
    Borghi, G.
    Van Nieuwenhuizen, E. E.
    Barton, C. J.
    Borra, F.
    Engelhardt, E.
    Gusev, K.
    Xu, W.
    Di Giacinto, A.
    Song, G.
    Tretyak, V.
    Busch, M.
    Comellato, T.
    Misiaszek, Marcin
    Razeto, A.
    Tagnani, D.
    Huber, M.
    Hinton, J.
    Schleich, S. J.
    Willers, M.
    Veresnikova, A.
    Zuber, K.
    Baudis, L.
    Morgan, B.
    Rozov, S.
    Lusardi, N.
    Schwingenheuer, B.
    Schütz, A.-K.
    Redchuk, M.
    Levashko, N.
    Hackett, B.
    Herrera, J.
    Mróz, Tomasz
    Hult, M.
    Duran, G.
    Bouabid, R.
    Lang, K.
    Yumatov, V.
    Nave, C. J.
    Brugnera, R.
    Martin, R. D.
    Acharya, H.
    Pertoldi, L.
    Serafini, A.
    Geraci, A.
    Guinn, I.
    Macolino, C.
    Schaper, D. C.
    Yakushev, E.
    Chiu, P.-J.
    Reine, A. L.
    Dixon, T.
    Clark, M. L.
    Burlac, N.
    Drobizhev, A.
    Kihm, T.
    Gurentsov, V.
    Wiesinger, C.
    Kormos, L. L.
    Kochanek, I.
    Li, L. Y.
    Barabash, A. S.
    Manzanillas, L.
    Fields, D. E.
    Salamanna, G.
    Stommel, M.
    Chapman, J. R.
    Di Marco, N.
    Febbraro, M. T.
    Piastra, F.
    Seibt, C.
    Wilkerson, J. F.
    Xu, D.
    Esch, E.
    Mirza, I.
    Gooch, C.
    Shevchik, E.
    Wiseman, C.
    León, E.
    Bauer, C.
    Massarczyk, R.
    Vignoli, C.
    Leonhardt, A.
    Harańczyk, Małgorzata
    Štekl, I.
    Kochetov, O.
    Leder, A.
    Skorokhvatov, M.
    Zuzel, Grzegorz
    Schlüter, L.
    Agostini, M.
    Simgen, H.
    Steinhart, L.
    Henning, R.
    Povinec, P. P.
    Henkes, F.
    Bernieri, E.
    Senatore, G.
    Biancacci, V.
    Morella, M.
    Yu, C.-H.
    Gessler, L.
    Li, A.
    Avignone, F. T.
    Shakhov, K.
    Shirchenko, M.
    Colon-Rivera, A. I.
    Waters, D.
    Borden, S. J.
    Galindo-Uribarri, A.
    Fuad, N.
    Lippi, I.
    Pichotta, M.
    Paudel, L. S.
    Fomina, M.
    Quinn, W. S.
    Watkins, S. L.
    Krishnamoorthy, H.
    Balata, M.
    Cesarano, R.
    Judson, D. S.
    Salamida, F.
    Lubashevskiy, A.
    Carney, R. M. D.
    Meireles, S. P.
    Selivanenko, O.
    Sullivan, S. A.
    Garfagnini, A.
    Bakalyarov, A. M.
    Capra, S.
    Grünauer, G.
    Hervas Aguilar, D.
    Jędrzejczak, Karol
    Cattadori, C.
    Jochum, J.
    Blalock, E.
    Runge, J.
    Gurov, Y.
    Kornoukhov, V. N.
    Pelczar, K.
    Pettus, W.
    Boston, A.
    Bothe, V.
    Ghiano, C.
    Mamedov, F.
    Muenstermann, D.
    Elliott, S. R.
    Schönert, S.
    Schulz, O.
    Papp, L.
    Green, M. P.
    Lubsandorzhiev, B.
    Tedeschi, D. J.
    Sailer, S.
    Warren, A.
    Fiorini, C.
    Hoffmann, H. F. R.
    Kaizer, J.
    Thorpe, T. N.
    Sreekala, A. R.
    Ferella, F.
    Saleh, G.
    O’Briant, N.
    Barbeau, P. S.
    Knöpfle, K. T.
    Neuberger, M.
    Savarese, C.
    Hodák, R.
    Carminati, M.
    Poon, A. W. P.
    Menzel, M.
    Gangapshev, A.
    Emmanuel, C. H. J.
    Kazalov, V.
    Babicz, M.
    Gala, R.
    Klimenko, A.
    Miller, E.
    Sumathi, R. R.
    Gieb, A.
    Laubenstein, M.
    Guiseppe, V. E.
    D’Andrea, V.
    Mertens, S.
    Christofferson, C. D.
    Taffarello, L.
    Jones, R. W. L.
    Šimkovic, F.
    Araujo, G. R.
    Kuzminov, V. V.
    Mei, D.-M.
    Paissan, F.
    Detwiler, J. A.
    Rossi, N.
    Szczepaniec, K.
    Shitov, Y.
    Gold, M.
    Efremenko, Yu.
    Majorovits, B.
    Bhimani, K. H.
    Gazzana, S.
    Saakyan, R.
    Bae, W.
    Marshall, G. G.
    Riboldi, S.
    Pullia, A.
    Andreoiu, C.
    Wójcik, Marcin
    Sandukovsky, V.
    Opis:
    The LEGEND Collaboration is searching for neutrinoless double-beta ($0\nu\beta\beta$) decay by operating high-purity germanium detectors enriched in $^{76}$Ge in a low-background liquid argon environment. Building on key technological innovations from the GERmanium Detector Array (GERDA) experiment and the MAJORANA DEMONSTRATOR experiment, LEGEND-200 has performed a first $0\nu\beta\beta$ decay search based on 61.0 kg yr of data. Over half of this exposure comes from our highest performing detectors, including newly developed inverted-coaxial detectors, and is characterized by an estimated background level of 0.5$^{+0.3}_{-0.2}$ cts/(keV ton yr) in the $0\nu\beta\beta$ decay signal region. A combined analysis of data from GERDA, the MAJORANA DEMONSTRATOR, and LEGEND-200, characterized by a 90% confidence level exclusion sensitivity of 2.8 $\times$ 10$^{26}$ yr on the half-life of $0\nu\beta\beta$ decay, reveals no evidence for a signal and sets a new observed lower limit at $T^{0\nu}_{1/2}$ > 1.0 $\times$ 10$^{26}$ yr (90% confidence level). Assuming the decay is mediated by Majorana neutrinos, this corresponds to an upper limit on the effective Majorana mass in the range $m_{\beta\beta}$ < 75-200 meV, depending on the adopted nuclear matrix element.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-9 z 9

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