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9 results on '"T. Stora"'

1. Be7(n,p)Li7 Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN

Author

Ralf Nolte, E. Griesmayer, L. A. Damone, T. Stora, G. Cortes, J. Lerendegui-Marco, G. Bellia, I. Duran, J. Balibrea-Correa, G. Tagliente, Alexandru Negret, A. Mengoni, I. F. Gonçalves, A. S. Brown, A. Kalamara, Juliana Schell, N. V. Sosnin, Annamaria Mazzone, A. Kimura, Srinivasan Ganesan, A. García-Rios, F. Gunsing, B. Fernández-Domínguez, F. Käppeler, P. J. Woods, Petar Žugec, Rene Reifarth, V. Bécares, S. Heinitz, Cristian Massimi, Ignacio Porras, N. Patronis, A. K. Saxena, Arnaud Ferrari, A. Casanovas, P. M. Milazzo, P. Vaz, Javier Praena, S. Lo Meo, F. Bečvář, Stefan Schmidt, E. Jericha, S. Valenta, M. Bacak, C. Wolf, E. Mendoza, Paolo Finocchiaro, Dorothea Schumann, C. Weiß, Marco Calviani, Cortés-Giraldo, J. M. Quesada, L. Tassan-Got, J. A. Ryan, Peter Schillebeeckx, R. Vlastou, D. Radeck, G. Vannini, A. G. Smith, T.D. Goodacre, M. Mirea, C. Rubbia, A. Stamatopoulos, D. Cano-Ott, A.P. Bernardes, Hideo Harada, M. Brugger, J. Billowes, E. Berthoumieux, M. Mastromarco, M. Diakaki, Sergio Cristallo, C. Seiffert, M. Ayranov, F. Cerutti, D. Bosnar, C. Beinrucker, Massimo Barbagallo, M. Caamaño, E. Leal-Cidoncha, F. Calviño, Simone Gilardoni, T. Glodariu, Roberto Losito, H. Leeb, Maurizio Busso, Anton Wallner, A. Oprea, J. Andrzejewski, A. Gawlik, T. J. Wright, S. Altstadt, R. Cardella, S. Warren, M. Piscopo, Thomas Rauscher, Ariel Tarifeño-Saldivia, S. J. Lonsdale, Y. Kadi, J. Perkowski, Emilio Andrea Maugeri, Rugard Dressler, V. Variale, J. Marganiec, M. Kokkoris, A. Musumarra, A. Dorsival, A. Pavlik, Tatsuya Katabuchi, A. Ventura, Kathrin Göbel, E. González-Romero, A. Masi, A. Tsinganis, Luciano Piersanti, Tanja Heftrich, C. Domingo-Pardo, D. G. Jenkins, A. Riego-Perez, Jan Heyse, Vasilis Vlachoudis, Pedro G. Ferreira, Mario Weigand, M. Sabaté-Gilarte, B. Marsh, L. Audouin, J.G. Martins Correia, P. C. Rout, F. Mingrone, S. Rothe, M. Dietz, L. Cosentino, A. J. M. Plompen, Claudia Lederer-Woods, W.I. Furman, Deniz Kurtulgil, P. V. Sedyshev, E. Dupont, M.J.G. Borge, D. M. Castelluccio, D. Macina, Carlos Guerrero, E. Chiaveri, P. F. Mastinu, K. Rajeev, N. Colonna, Francesca Matteucci, Y. H. Chen, Karl Johnston, M. Krtička, J. Ballof, T. Martinez, O. Aberle, J. L. Tain, U. Kohester, Niko Kivel, R. Catherall, and P. Kavrigin

Subjects
Physics, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, General Physics and Astronomy, chemistry.chemical_element, 01 natural sciences, Cosmology, Neutron temperature, Nuclear physics, chemistry, Nucleosynthesis, 0103 physical sciences, Neutron, Lithium, Nuclear Experiment, 010306 general physics, Energy (signal processing)
Abstract

We report on the measurement of the $^{7}$Be($n, p$)$^{7}$Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n\_TOF facility at CERN. This reaction plays a key role in the lithium yield of the Big Bang Nucleosynthesis (BBN) for standard cosmology. The only two previous time-of-flight measurements performed on this reaction did not cover the energy window of interest for BBN, and showed a large discrepancy between each other. The measurement was performed with a Si-telescope, and a high-purity sample produced by implantation of a $^{7}$Be ion beam at the ISOLDE facility at CERN. While a significantly higher cross section is found at low-energy, relative to current evaluations, in the region of BBN interest the present results are consistent with the values inferred from the time-reversal $^{7}$Li($p, n$)$^{7}$Be reaction, thus yielding only a relatively minor improvement on the so-called Cosmological Lithium Problem (CLiP). The relevance of these results on the near-threshold neutron production in the p+$^{7}$Li reaction is also discussed.

Published
2018

2. $^{7}$ Be(n,p)$^{7}$ Li Cross Section Measurement for the Cosmological Lithium Problem at the n $\_$ TOF Facility at CERN

Author

M.J.G. Borge, D. M. Castelluccio, Rene Reifarth, A. Kimura, Stefan Schmidt, Srinivasan Ganesan, D. Macina, Carlos Guerrero, Cortés-Giraldo, G. Bellia, J. M. Quesada, L. Tassan-Got, P. J. Woods, Ignacio Porras, Sergio Cristallo, I. Duran, A. Mengoni, V. Bcares, Alexandru Negret, Juliana Schell, A. Casanovas, K. Rajeev, A. K. Saxena, Tatsuya Katabuchi, A. Ventura, J. Lerendegui-Marco, Maurizio Busso, M. Piscopo, Ariel Tarifeño-Saldivia, S. J. Lonsdale, B. Fernández-Domínguez, S. Rothe, F. Käppeler, Francesca Matteucci, R. Catherall, I. F. Gonçalves, P. Kavrigin, L. Cosentino, D. Bosnar, Ralf Nolte, Javier Praena, S. Lo Meo, M. Brugger, E. Griesmayer, A. Stamatopoulos, L. A. Damone, C. Beinrucker, T. Stora, Claudia Lederer-Woods, E. Leal-Cidoncha, W.I. Furman, E. Chiaveri, A. Gawlik, Thomas Rauscher, P. F. Mastinu, D. Cano-Ott, A.P. Bernardes, Deniz Kurtulgil, P. V. Sedyshev, M. Diakaki, A. S. Brown, J. L. Tain, U. Kohester, J. Balibrea-Correa, E. González-Romero, Niko Kivel, O. Aberle, J. Billowes, N. Colonna, A. Oprea, J. Andrzejewski, A. Pavlik, Y. Kadi, C. Domingo-Pardo, Y. H. Chen, C. Rubbia, Kathrin Göbel, J. Marganiec, B. Marsh, P. M. Milazzo, S. Valenta, Karl Johnston, N. Patronis, G. Tagliente, F. Cerutti, R. Vlastou, Marco Calviani, A. G. Smith, D. Radeck, G. Corts, E. Berthoumieux, P. Vaz, A. Masi, Jan Heyse, D. G. Jenkins, T.D. Goodacre, C. Seiffert, M. Ayranov, Emilio Andrea Maugeri, M. Krtička, Simone Gilardoni, A. Musumarra, J. Ballof, E. Jericha, A. Dorsival, Paolo Finocchiaro, T. Martinez, Dorothea Schumann, M. Kokkoris, C. Weiß, S. Heinitz, J. A. Ryan, Tanja Heftrich, N. V. Sosnin, R. Cardella, A. Riego-Perez, Annamaria Mazzone, Petar Žugec, S. Altstadt, L. Audouin, S. Warren, G. Vannini, F. Bečvář, V. Variale, C. Wolf, E. Mendoza, M. Caamaño, Peter Schillebeeckx, P. C. Rout, A. Kalamara, F. Mingrone, T. J. Wright, E. Dupont, M. Mastromarco, A. J. M. Plompen, A. Garca-Rios, Massimo Barbagallo, M. Dietz, Anton Wallner, Hideo Harada, J.G. Martins Correia, M. Mirea, Rugard Dressler, F. Calviño, H. Leeb, M. Sabaté-Gilarte, A. Tsinganis, Luciano Piersanti, J. Perkowski, F. Gunsing, Vasilis Vlachoudis, Cristian Massimi, A. Ferrari, Pedro G. Ferreira, Mario Weigand, M. Bacak, T. Glodariu, Roberto Losito, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Laue-Langevin (ILL), n_TOF, ILL, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Damone, L. A., Barbagallo, M., Mastromarco, M., Mengoni, A., Colonna, N., Cosentino, L., Maugeri, E. A., Heinitz, S., Schumann, D., Dressler, R., Kappeler, F., Finocchiaro, P., Andrzejewski, J., Perkowski, J., Gawlik, A., Aberle, O., Altstadt, S., Ayranov, M., Audouin, L., Bacak, M., Balibrea-Correa, J., Ballof, J., Bcares, V., Becvar, F., Beinrucker, C., Bellia, G., Bernardes, A. P., Berthoumieux, E., Billowes, J., Borge, M. J. G., Bosnar, D., Brown, A., Brugger, M., Busso, M., Caamano, M., Calvino, F., Calviani, M., Cano-Ott, D., Cardella, R., Casanovas, A., Castelluccio, D. M., Catherall, R., Cerutti, F., Chen, Y. H., Chiaveri, E., Corts, G., Cortes-Giraldo, M. A., Cristallo, S., Diakaki, M., Dietz, M., Domingo-Pardo, C., Dorsival, A., Dupont, E., Duran, I., Fernandez-Dominguez, B., Ferrari, A., Ferreira, P., Furman, W., Ganesan, S., Garca-Rios, A., Gilardoni, S., Glodariu, T., Gobel, K., Goncalves, I. F., Gonzalez-Romero, E., Goodacre, T. D., Griesmayer, E., Guerrero, C., Gunsing, F., Harada, H., Heftrich, T., Heyse, J., Jenkins, D. G., Jericha, E., Johnston, K., Kadi, Y., Kalamara, A., Katabuchi, T., Kavrigin, P., Kimura, A., Kivel, N., Kohester, U., Kokkoris, M., Krticka, M., Kurtulgil, D., Leal-Cidoncha, E., Lederer-Woods, C., Leeb, H., Lerendegui-Marco, J., Lo Meo, S., Lonsdale, S. J., Losito, R., Macina, D., Marganiec, J., Marsh, B., Martinez, T., Martins Correia, J. G., Masi, A., Massimi, C., Mastinu, P., Matteucci, F., Mazzone, A., Mendoza, E., Milazzo, P. M., Mingrone, F., Mirea, M., Musumarra, A., Negret, A., Nolte, R., Oprea, A., Patronis, N., Pavlik, A., Piersanti, L., Piscopo, M., Plompen, A., Porras, I., Praena, J., Quesada, J. M., Radeck, D., Rajeev, K., Rauscher, T., Reifarth, R., Riego-Perez, A., Rothe, S., Rout, P., Rubbia, C., Ryan, J., Sabate-Gilarte, M., Saxena, A., Schell, J., Schillebeeckx, P., Schmidt, S., Sedyshev, P., Seiffert, C., Smith, A. G., Sosnin, N. V., Stamatopoulos, A., Stora, T., Tagliente, G., Tain, J. L., Tarifeno-Saldivia, A., Tassan-Got, L., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vlachoudis, V., Vlastou, R., Wallner, A., Warren, S., Weigand, M., Weiss, C., Wolf, C., Woods, P. J., Wright, T., Zugec, P., Formicola, Alba, Junker, Matthias, Gialanella, Lucio, Imbriani, Gianluca, Damone L.A., Barbagallo M., Mastromarco M., Mengoni A., Colonna N., Cosentino L., Maugeri E.A., Heinitz S., Schumann D., Dressler R., Kappeler F., Finocchiaro P., Andrzejewski J., Perkowski J., Gawlik A., Aberle O., Altstadt S., Ayranov M., Audouin L., Bacak M., Balibrea-Correa J., Ballof J., Bcares V., Becvar F., Beinrucker C., Bellia G., Bernardes A.P., Berthoumieux E., Billowes J., Borge M.J.G., Bosnar D., Brown A., Brugger M., Busso M., Caamano M., Calvino F., Calviani M., Cano-Ott D., Cardella R., Casanovas A., Castelluccio D.M., Catherall R., Cerutti F., Chen Y.H., Chiaveri E., Corts G., Cortes-Giraldo M.A., Cristallo S., Diakaki M., Dietz M., Domingo-Pardo C., Dorsival A., Dupont E., Duran I., Fernandez-Dominguez B., Ferrari A., Ferreira P., Furman W., Ganesan S., Garca-Rios A., Gilardoni S., Glodariu T., Gobel K., Goncalves I.F., Gonzalez-Romero E., Goodacre T.D., Griesmayer E., Guerrero C., Gunsing F., Harada H., Heftrich T., Heyse J., Jenkins D.G., Jericha E., Johnston K., Kadi Y., Kalamara A., Katabuchi T., Kavrigin P., Kimura A., Kivel N., Kohester U., Kokkoris M., Krticka M., Kurtulgil D., Leal-Cidoncha E., Lederer-Woods C., Leeb H., Lerendegui-Marco J., Lo Meo S., Lonsdale S.J., Losito R., Macina D., Marganiec J., Marsh B., Martinez T., Martins Correia J.G., Masi A., Massimi C., Mastinu P., Matteucci F., Mazzone A., Mendoza E., Milazzo P.M., Mingrone F., Mirea M., Musumarra A., Negret A., Nolte R., Oprea A., Patronis N., Pavlik A., Piersanti L., Piscopo M., Plompen A., Porras I., Praena J., Quesada J.M., Radeck D., Rajeev K., Rauscher T., Reifarth R., Riego-Perez A., Rothe S., Rout P., Rubbia C., Ryan J., Sabate-Gilarte M., Saxena A., Schell J., Schillebeeckx P., Schmidt S., Sedyshev P., Seiffert C., Smith A.G., Sosnin N.V., Stamatopoulos A., Stora T., Tagliente G., Tain J.L., Tarifeno-Saldivia A., Tassan-Got L., Tsinganis A., Valenta S., Vannini G., Variale V., Vaz P., Ventura A., Vlachoudis V., Vlastou R., Wallner A., Warren S., Weigand M., Weiss C., Wolf C., Woods P.J., Wright T., and Zugec P.

Subjects
Physics, Large Hadron Collider, 010308 nuclear & particles physics, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, BBN, neutron, Nuclear physics, Stars, Cross section (physics), chemistry, Big Bang nucleosynthesis, 7Be(n, p)7Li, Cosmological Lithium Problem, n_TOF, 0103 physical sciences, Nuclear astrophysics, Lithium, Halo, 010306 general physics, Beam (structure)
Abstract

International audience; One of the most puzzling problems in Nuclear Astrophysics is the “Cosmological Lithium Problem”, i.e the discrepancy between the primordial abundance of$^{7}$ Li observed in metal poor halo stars (Asplund et al. in Astrophys J 644:229–259, 2006, [1]), and the one predicted by Big Bang Nucleosynthesis (BBN). One of the reactions that could have an impact on the problem is$^{7}$ Be(n,p)$^{7}$ Li. Despite of the importance of this reaction in BBN, the cross-section has never been directly measured at the energies of interest for BBN. Taking advantage of the innovative features of the second experimental area at the n $\_$ TOF facility at CERN (Sabate-Gilarte et al. in Eur Phys J A 53:210, 2017, [2], Weiss et al. in NIMA 799:90, 2015, [3]), an accurate measurement of$^{7}$ Be(n,p) cross section has been recently performed at n $\_$ TOF, with a pure$^{7}$ Be target produced by implantation of a$^{7}$ Be beam at ISOLDE. The mesurement started in April 2016 and lasted for two months. The experimental procedure, the setup used in the measurement and the results obtained so far will be here presented.

Published
2018

3. Production of negatively charged radioactive ion beams

Author

T Stora, D W Stracener, and Y Liu

Subjects
Physics, Radioactive ion beams, Large Hadron Collider, Ion beam, 010308 nuclear & particles physics, General Physics and Astronomy, Oak Ridge National Laboratory, Tandem accelerator, 01 natural sciences, Accelerators and Storage Rings, Experimental research, Ion, Nuclear physics, 0103 physical sciences, Physics::Accelerator Physics, Laser beam quality, 010306 general physics, Nuclear Experiment
Abstract

Beams of short-lived radioactive nuclei are needed for frontier experimental research in nuclear structure, reactions, and astrophysics. Negatively charged radioactive ion beams have unique advantages and allow for the use of a tandem accelerator for post-acceleration, which can provide the highest beam quality and continuously variable energies. Negative ion beams can be obtained with high intensity and some unique beam purification techniques based on differences in electronegativity and chemical reactivity can be used to provide beams with high purity. This article describes the production of negative radioactive ion beams at the former holifield radioactive ion beam facility at Oak Ridge National Laboratory and at the CERN ISOLDE facility with emphasis on the development of the negative ion sources employed at these two facilities.

Published
2017

4. Publisher’s Note: High intensity neutrino oscillation facilities in Europe [Phys. Rev. Accel. Beams16, 021002 (2013)]

Author

C. Bobeth, Maurizio Bonesini, M. Marie-Jeanne, M. Apollonio, C. Waaijer, Th. Delbar, Kenneth Long, Ilias Efthymiopoulos, T.K. Ghosh, François Debray, M. Hass, F. Gramegna, D. Wilcox, Jacques Wurtz, Sanjib Kumar Agarwalla, M. Buizza-Avanzini, Morteza Aslaninejad, Thomas Thuillier, C. Bontoiu, T. Lamy, A. Kurup, R. Matev, Silvia Pascoli, G. Collazuol, B. Szybinski, Patrick Huber, S. Machida, A. Bogacz, O. Mena, L. Agostino, G. Gaudiot, G. de Angelis, Marcos Dracos, J. Giraud, M. C. Gonzalez Garcia, E. Fernandez Martinez, L. Tortora, C. Rogers, F. Terranova, J. Bielski, Tommaso Marchi, Jordi Burguet-Castell, Emanuele Vardaci, Paul Soler, M. Marafini, R. Garoby, Erk Jensen, D. Duchesneau, P. Coloma, Walter Winter, M. Zito, M. Loiselet, M. Martini, He Zhang, L. Lacny, J. W. G. Thomason, Camilla Juul Hansen, A. Longhin, M. Cinausero, J. Payet, E. Benedetto, M. Cordwell, Michele Maltoni, C. Fourel, Simone Gilardoni, Shrikant Pattalwar, A. Chancé, Andrew Moss, M. Schaumann, Holger Witte, T. Stora, A. Stahl, Jordi Salvado, M. Kozien, David Neuffer, Eric Baussan, T. R. Edgecock, R. Moro, C. Trophine, Evgeny Kh. Akhmedov, P. F. Harrison, J. Tang, Elena Wildner, L. Mosca, Th. Keutgen, V. Zeter, K. B. Beard, G. La Rana, S. Mitrofanov, G. Prete, Andrea Donini, David Kelliher, Stéphane Veys, Tommy Ohlsson, A. Di Nitto, D. Meloni, J. J. Back, N. Vassilopoulos, Joachim Kopp, P. Poussot, A. Tonazzo, Carlo Giunti, Javier Fernandez Menendez, T. Y. Hirsh, D. Berkovits, Christopher Prior, Błażej Skoczeń, Y. Karadzhov, Manfred Lindner, V. Vlachoudis, Cécile Daversin, Amos Dexter, J. Lopez Pavon, A. Cervera Villanueva, Pavel Snopok, Mattias Blennow, Diktys Stratakis, Porfidio Hernández, M. Rooney, M. Mazzocco, P. Migliozzi, V. Palladino, J. Martín-Albo, M. Mezzetto, Christopher Orme, M. Bogomilov, A.K. Wróblewski, T. Davenne, J. S. Berg, N. Bliss, Thomas Schwetz, R. Bayes, A. Alekou, Jeson Jacob, M. Fitton, Jakob Wehner, Graeme Burt, Piotr Cupiał, T. Patzak, Nicla Gelli, T. Li, Jaroslaw Pasternak, Pascal Sortais, Marco Laveder, A. Bross, Jürgen Pozimski, C. Densam, O. Caretta, A. Laing, P. Loveridge, C. Signorini, T. Melo Mendonca, Ivan Izotov, J. J. Gomez Y Cadenas, B. Lepers, R. Tsenov, P. Balint, A. Kosmicki, A. Brondi, V. L. Kravchuk, L. J. Jenner, J. Osborne, Elian Bouquerel, A. Ustrzycka, L. Scotto-Lavina, F. Osswald, V. G. Zorin, L. Latrasse, G. Prior, R. Wands, Vadim Skalyga, Edgecock, T. . r., Caretta, O., Davenne, T., Densam, C., Fitton, M., Kelliher, D., Loveridge, P., Machida, S., Prior, C., Rogers, C., Rooney, M., Thomason, J., Wilcox, D., Wildner, E., Efthymiopoulos, I., Garoby, R., Gilardoni, S., Hansen, C., Benedetto, E., Jensen, E., Kosmicki, A., Martini, M., Osborne, J., Prior, G., Stora, T., Melo Mendonca, T., Vlachoudis, V., Waaijer, C., Cupial, P., Chance, A., Longhin, A., Payet, J., Zito, M., Baussan, E., Bobeth, C., Bouquerel, E., Dracos, M., Gaudiot, G., Lepers, B., Osswald, F., Poussot, P., Vassilopoulos, N., Wurtz, J., Zeter, V., Bielski, J., Kozien, M., Lacny, L., Skoczen, B., Szybinski, B., Ustrzycka, A., Wroblewski, A., Marie Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, T. h., Delbar, T. h., Debray, F., Trophine, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Burt, G., Dexter, A. . c., Kravchuk, V. . l., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Laveder, M., Mazzocco, M., Mezzetto, M., Signorini, C., Vardaci, Emanuele, DI NITTO, Antonio, Brondi, Augusto, LA RANA, Giovanni, Migliozzi, P., Moro, RENATA EMILIA MARIA, Palladino, Vittorio, Gelli, N., Berkovits, D., Hass, M., Hirsh, T. . y., Schaumann, M., Stahl, A., Wehner, J., Bross, A., Kopp, J., Neuffer, D., Wands, R., Bayes, R., Laing, A., Soler, P., Agarwalla, S. . k., Cervera Villanueva, A., Donini, A., Ghosh, T., Gomez Cadenas, J. . j., Hernandez, P., Martin Albo, J., Mena, O., Burguet Castell, J., Agostino, L., Buizza Avanzini, M., Marafini, M., Patzak, T., Tonazzo, A., Duchesneau, D., Mosca, L., Bogomilov, M., Karadzhov, Y., Matev, R., Tsenov, R., Akhmedov, E., Blennow, M., Lindner, M., Schwetz, T., Fernandez Martinez, E., Maltoni, M., Menendez, J., Giunti, C., Gonzalez Garcia, M. . c., Salvado, J., Coloma, P., Huber, P., Li, T., Lopez Pavon, J., Orme, C., Pascoli, S., Meloni, D., Tang, J., Winter, W., Ohlsson, T., Zhang, H., Scotto Lavina, L., Terranova, F., Bonesini, M., Tortora, L., Alekou, A., Aslaninejad, M., Bontoiu, C., Kurup, A., Jenner, L. . j., Long, K., Pasternak, J., Pozimski, J., Back, J. . j., Harrison, P., Beard, K., Bogacz, A., Berg, J. . s., Stratakis, D., Witte, H., Snopok, P., Bliss, N., Cordwell, M., Moss, A., Pattalwar, S., and Apollonio, M.

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous), High intensity, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Surfaces and Interfaces, Neutrino oscillation
Published
2016

5. Design of a neutrino source based on beta beams

Author

M. Schaumann, T. Stora, François Debray, M. Hass, G. de Angelis, M. Mezzetto, Tommaso Marchi, Achim Stahl, C. Signorini, Elena Wildner, T. Lamy, J. Giraud, M. Mazzocco, T. Melo Mendonca, Elian Bouquerel, Camilla Juul Hansen, Jakob Wehner, M. Loiselet, Cécile Daversin, G. La Rana, Jeson Jacob, Th. Keutgen, S. Mitrofanov, L. Latrasse, M. Cinausero, Pascal Sortais, A. Di Nitto, C. Fourel, A. Chancé, Vadim Skalyga, Amos Dexter, V. Vlachoudis, V. G. Zorin, M. Marie-Jeanne, A. Brondi, V. Palladino, Graeme Burt, Ivan Izotov, Christophe Trophime, F. Gramegna, T. Y. Hirsh, E. Benedetto, Nicla Gelli, Emanuele Vardaci, Erk Jensen, P. Balint, V. L. Kravchuk, J. Payet, R. Moro, G. Prete, Stéphane Veys, D. Berkovits, Thomas Thuillier, G. Collazuol, Th. Delbar, European Organization for Nuclear Research (CERN), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), UCL - SST/IRMP - Institut de recherche en mathématique et physique, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Wildner, E., Hansen, C., Benedetto, E., Jensen, E., Stora, T., Melo Mendonca, T., Vlachoudis, V., Bouquerel, E., Marie Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, T. h., Delbar, T. h., Debray, F., Trophime, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Chanc?, A., Payet, J., Burt, G., Dexter, A. ?. C., Kravchuk, V. ?. L., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Mezzetto, M., Vardaci, Emanuele, Di Nitto, A., Brondi, Augusto, LA RANA, Giovanni, Moro, R., Palladino, Vittorio, Gelli, N., Mazzocco, M., Signorini, C., Hirsh, T. ?. Y., Hass, M., Berkovits, D., Stahl, A., Schaumann, M., and Wehner, J.

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), Ion beam, 010308 nuclear & particles physics, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Surfaces and Interfaces, Electron, Accelerators and Storage Rings, 7. Clean energy, 01 natural sciences, Collimated light, Linear particle accelerator, Nuclear physics, 0103 physical sciences, lcsh:QC770-798, Physics::Accelerator Physics, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Neutrino, 010306 general physics, Storage ring, Beam (structure)
Abstract

"Beta Beams" produce collimated pure electron (anti-) neutrino beams by accelerating beta active ions to high energies and having them decay in a race track shaped storage ring of 7 km circumference, the Decay Ring. EUROnu Beta Beams are based on CERN infrastructures and existing machines. Using existing machines may be an advantage for the cost evaluation, however, this choice is also constraining the Beta Beams. The isotope pair of choice for the Beta Beam is 6He and 18Ne. However before the EUROnu studies one of the needed isotopes, 18Ne, could not be produced in rates that satisfy the needs for physics reach of the Beta Beam. Therefore, studies of alternative beta emitters, 8Li and 8B, with properties interesting for a Beta Beam have been proposed and have been studied within EUROnu. These alternative isotopes could be produced by using a small storage ring, in which the beam traverses a target, creating the 8Li and 8B isotopes. This Production Ring, the injection Linac and the target system have been evaluated. Measurements of the cross-section of the reactions to produce the Beta Beam isotopes show interesting results. A device to collect the produced isotopes from the target has been developed and tested. However, the obtained rates of the 8Li and 8B, using the Production Ring for production of 8Li and 8B, is not yet, according to simulations, giving the rates of isotopes that would be needed. Therefore, a new method of producing the 18Ne isotope has been developed and tested giving good production rates. The baseline presented for the Beta Beam is therefore now to use the 6He and 18Ne isotopes for neutrino production. A 60 GHz ECRIS prototype, the first in the world, was developed and tested with contributions from EUROnu. The Beta Beam has to take into account the modifications of the injectors planned in view of LHC-upgrades. The Decay Ring lattices for the 8Li and 8B have been developed, the lattice for 6He and 18Ne has been optimized also to ensure the high intensity ion beam stability.

Published
2014

6. Comparison of Expected Yields for Light Radioactive Beams at SPIRAL-1 And 2

Author

H. Frånberg, Rastislav Hodák, A. Fournier, T. Stora, F. de Oliveira Santos, A. Pichard, M. G. Saint-Laurent, Michael Hass, P. Alfaurt, T. Hirsh, M. Fadil, C. E. Demonchy, G. Lhersonneau, R. Leroy, L. Serani, P. Delahaye, F. Pellemoine, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Weizmann Institute of Science [Rehovot, Israël], Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ISOLDE, CERN, CERN [Genève], Yu.E. Penionzhkevich, S.M. Lukyanov, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010302 applied physics, Physics, Nuclear reaction, 29.20.Ej, 29.25. Rm, 29.38.Gj, 25.70.Mn, Reaccelerated radioactive beams, Particle accelerator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Linear particle accelerator, law.invention, Isotope separation, Nuclear physics, law, Yield (chemistry), 0103 physical sciences, Physics::Accelerator Physics, Light beam, Sources of radioactive nuclei, Neutron, Nuclear reactions, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

Commune avec MECA au CENBG; International audience; Light-particles stable high-intensity beams (p, d, 3,4He...) will be available from the Linac driver accelerator of SPIRAL-2. Yields of neutron-deficient isotopes as well as of neutron-rich isotopes (by means of reactions with secondary neutrons) are compared with those presently available at the SPIRAL-1 facility. We explore, for light beams (Z< 16) asked in the 'white book' of SPIRAL-2 1, the production methods taking into account the in-target yield but also the feasibility of making such beams by the ISOL method (considering reaction, target, thermal and release properties). We discuss some of the tests needed and planned. A comparison with the present and potentially attainable yields at SPIRAL-1 is presented.

Published
2009

7. Discovery ofRn229and the Structure of the Heaviest Rn and Ra Isotopes from Penning-Trap Mass Measurements

Author

Christine Böhm, Dietrich Beck, Alban Kellerbauer, Klaus Blaum, Magda Kowalska, M. Rosenbusch, Stefan Schwarz, R. B. Cakirli, Etam Noah, T. Stora, L. Penescu, Dennis Neidherr, Frank Herfurth, R. F. Casten, Alexander Herlert, M. Breitenfeldt, Sebastian George, G. Audi, Lutz Schweikhard, E. Minaya-Ramirez, S. Naimi, and David Lunney

Subjects
Physics, Isotope, 010308 nuclear & particles physics, General Physics and Astronomy, chemistry.chemical_element, Radon, Penning trap, 01 natural sciences, 7. Clean energy, Mass measurement, ISOLTRAP, Nuclear physics, chemistry, 0103 physical sciences, Nuclide, 010306 general physics
Abstract

The masses of the neutron-rich radon isotopes {sup 223-229}Rn have been determined for the first time, using the ISOLTRAP setup at CERN ISOLDE. In addition, this experiment marks the first discovery of a new nuclide, {sup 229}Rn, by Penning-trap mass measurement. The new, high-accuracy data allow a fine examination of the mass surface, via the valence-nucleon interaction {delta}V{sub pn}. The results reveal intriguing behavior, possibly reflecting either a N=134 subshell closure or an octupolar deformation in this region.

Published
2009

8. Oxide Target Designs for High Primary Beam Intensities for Future Radioactive Ion Beam Facilities

Author

T. Stora, E. Bouquerel, L. Bruno, R. Catherall, S. Fernandes, P. Kasprowicz, J. Lettry, S. Marzari, B. S. Nara Singh, E. Noah, L. Penescu, R. Wilfinger, Floyd D. McDaniel, and Barney L. Doyle

Subjects
Materials science, Ion beam, Proton, Nuclear engineering, Oxide, Particle accelerator, Power (physics), law.invention, Nuclear physics, chemistry.chemical_compound, Thermal conductivity, chemistry, law, Thermal, Beam (structure)
Abstract

Oxide targets used nowadays in ISOL facilities can only accommodate up to a few kW incoming beam power because of the targets’ moderate operation temperatures and their low thermal conductivities. A generic design to accommodate a 100 kW, 1 GeV proton beam, used as baseline parameters in the ongoing EURISOL‐DS project, along with the numerical and experimental tools required for its validation, are reported here. We provide some details on these high‐power composite oxide‐refractory metal targets and on the proposed arrangement in several sub‐units merging into a single ion source.

Published
2009

9. The laser ion source trap for highest isobaric selectivity in online exotic isotope production

Author

C. Mattolat, Klaus Blaum, T. Gottwald, B. Marsh, R. Catherall, T. Stora, Sebastian Rothe, F. Schwellnus, V. Fedosseev, Klaus Wendt, Hans-Jürgen Kluge, and B. Crepieux

Subjects
Materials science, Ion beam, Particle accelerator, Laser, Ion source, Ion, law.invention, Nuclear physics, law, Ionization, Physics::Accelerator Physics, Thermal emittance, Physics::Atomic Physics, Ion trap, Atomic physics, Nuclear Experiment, Instrumentation
Abstract

The improvement in the performance of a conventional laser ion source in the laser ion source and trap (LIST) project is presented, which envisages installation of a repeller electrode and a linear Paul trap/ion guide structure. This approach promises highest isobaric purity and optimum temporal and spatial control of the radioactive ion beam produced at an online isotope separator facility. The functionality of the LIST was explored at the offline test separators of University of Mainz (UMz) and ISOLDE/CERN, using the UMz solid state laser system. Ionization efficiency and selectivity as well as time structure and transversal emittance of the produced ion beam was determined. Next step after complete characterization is the construction and installation of the radiation-hard final trap structure and its first online application.

Published
2010

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