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2. Measurement of the n_TOF beam profile with a micromegas detector

Author

Pancin, J., Abbondanno, U., Aerts, G., Alvarez, H., Andriamonje, S., Angelopoulos, A., Assimakopoulos, P., Bacri, C., Badurek, G., Baumann, P., Bečvář, F., Beer, H., Benlliure, J., Berthier, B., Berthoumieux, E., Boffi, S., Borcea, C., Boscolo-Marchi, E., Bustreo, N., Calvino, F., Cano-ott, D., Capote, R., Carlson, P., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., Dahlfors, M., David, S., Delbart, A., Derre, J., Dolfini, R., Domingo, C., Duran-Escribano, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Lourenco, L., Ferreiramarques, R., Frais-Koelbl, H., Furman, W., Giomataris, Y., Goncalves, I., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haight, R., Heil, M., Herrera-Martinez, A., Ioannides, K., Janeva, N., Jeanneau, F., Jericha, E., Käppeler, F., Kadi, Y., Karamanis, D., Kelic, A., Ketlerov, V., Kitis, G., Koehler, P., Konovalov, V., Kossionides, E., Lacoste, V., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Markov, S., Marrone, S., Martinez-Val, J., Mastinu, P., Mengoni, A., Milazzo, P., Minguez, E., Molina-Coballes, A., Moreau, C., Neves, F., Oberhummer, H., O'brien, S., Papadopoulos, I., Papavengelou, T., Paradela, C., Pavlik, A., Pavlopoulos, P., Perez-Parra, A., Perlado, J., Peskov, V., Perrot, L., Plag, R., Plompen, A., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, J., Radici, M., Raman, S., Rapp, W., Reifarth, R., Rejmund, F., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Savvidis, E., Stephan, C., Tagliente, G., Tain, J., Tapia, C., Tassan-Got, L., Tavora, L., Terlizzi, R., Terrani, M., Tsangas, N., Vannini, G., Vaz, P., Ventura, A., Villamarin-Fernandez, D., Vincente-Vincente, M., Vlachoudis, V., Vlastou, R., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., and Zanini, L.

Published
2004
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3. New experimental validation of the pulse height weighting technique for capture cross-section measurements

Author

Abbondanno, U, Aerts, G, Alvarez, H, Andriamonje, S, Angelopoulos, A, Assimakopoulos, P, Bacri, C.O, Badurek, G, Baumann, P, Bečvář, F, Beer, H, Benlliure, J, Berthier, B, Berthomieux, E, Boffi, S, Borcea, C, Boscolo-Marchi, E, Bustreo, N, Calviño, P, Cano-Ott, D, Capote, R, Carlson, P, Cennini, P, Chepel, V, Chiaveri, E, Coceva, C, Colonna, N, Cortes, G, Cortina, D, Couture, A, Cox, J, Dababneh, S, Dahlfors, M, David, S, Dolfini, R, Domingo-Pardo, C, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Lourenco, L, Ferreira-Marques, R, Frais-Koelbl, H, Furman, W.I, Giomataris, Y, Goncalves, I.F, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Gunsing, F, Haight, R, Heil, M, Herrera-Martinez, A, Ioannides, K.G, Janeva, N, Jericha, E, Käppeler, F, Kadi, Y, Karamanis, D, Kelic, A, Ketlerov, V, Kitis, G, Koehler, P.E, Konovalov, V, Kossionides, E, Lacoste, V, Leeb, H, Lindote, A, Lopes, M.I, Lozano, M, Lukic, S, Markov, S, Marrone, S, Martinez-Val, J, Mastinu, P, Mengoni, A, Milazzo, P.M, Minguez, E, Molina-Coballes, A, Moreau, C, Neves, F, Oberhummer, H, O'Brien, S, Pancin, J, Papaevangelou, T, Paradela, C, Pavlik, A, Pavlopoulos, P, Perez-Parra, A, Perlado, J.M, Perrot, L, Peskov, V, Plag, R, Plompen, A, Plukis, A, Poch, A, Policarpo, A, Pretel, C, Quesada, J.M, Radici, M, Raman, S, Rapp, W, Rauscher, T, Reifarth, R, Rejmund, F, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Savvidis, E, Soares, J.C, Stephan, C, Tagliente, G, Tain, J.L, Tapia, C, Tassan-Got, L, Tavora, L.M.N, Terlizzi, R, Terrani, M, Tsangas, N, Vannini, G, Vaz, P, Ventura, A, Villamarin-Fernandez, D, Vincente-Vincente, M, Vlachoudis, V, Vlastou, R, Voss, F, Wendler, H, Wiescher, M, Wisshak, K, and Zanini, L

Published
2004
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4. A low background neutron flux monitor for the n_TOF facility at CERN

Author

Marrone, S., Mastinu, P.F., Abbondanno, U., Baccomi, R., Marchi, E.Boscolo, Bustreo, N., Colonna, N., Gramegna, F., Loriggiola, M., Marigo, S., Milazzo, P.M., Moreau, C., Sacchetti, M., Tagliente, G., Terlizzi, R., Vannini, G., Aerts, G., Berthomieux, E., Cano-Ott, D., Cennini, P., Domingo-Pardo, C., Ferrant, L., Gonzalez-Romero, E., Gunsing, F., Heil, M., Kaeppeler, F., Papaevangelou, T., Paradela, C., Pavlopoulos, P., Perrot, L., Plag, R., Tain, J.L., and Wendler, H.

Published
2004
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5. Measurements of neutron capture cross-sections for ADS-related studies

Author

Milazzo, P.M., Aerts, G., Berthoumieux, E., Bustreo, N., Cano-Ott, D., Cennini, P., Colonna, N., Domingo, C., Embid, M., Ferrant, L., Gonzales, E., Gunsing, F., Heil, M., Käppeler, F., Marrone, S., Mastinu, P.F., Mengoni, A, Moreau, C., Pancin, J., Papaevangelou, T., Paradela, C., Pavlopoulos, P., Plag, R., Reifarth, R., Stephan, C., Tassan-Got, L., Tagliente, G., Tain, J.L., Terlizzi, R., and Vlachoudis, V.

Published
2004
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6. Measurement of the n_TOF beam profile with a micromegas detector

Author

Pancin, J. Abbondanno, U. Aerts, G. Alvarez, H. Andriamonje, S. Angelopoulos, A. Assimakopoulos, P. Bacri, C. Badurek, G. Baumann, P. Bečvář, F. Beer, H. Benlliure, J. Berthier, B. Berthoumieux, E. Boffi, S. Borcea, C. Boscolo-Marchi, E. Bustreo, N. Calvino, F. Cano-ott, D. Capote, R. Carlson, P. Cennini, P. Chepel, V. Chiaveri, E. Colonna, N. Cortes, G. Cortina, D. Couture, A. Cox, J. Dababneh, S. Dahlfors, M. David, S. Delbart, A. Derre, J. Dolfini, R. Domingo, C. Duran-Escribano, I. Eleftheriadis, C. Embid-Segura, M. Ferrant, L. Ferrari, A. Ferreira-Lourenco, L. Ferreiramarques, R. Frais-Koelbl, H. Furman, W. Giomataris, Y. Goncalves, I. Gonzalez-Romero, E. Goverdovski, A. Gramegna, F. Griesmayer, E. Gunsing, F. Haight, R. Heil, M. Herrera-Martinez, A. Ioannides, K. Janeva, N. Jeanneau, F. Jericha, E. Käppeler, F. Kadi, Y. Karamanis, D. Kelic, A. Ketlerov, V. Kitis, G. Koehler, P. Konovalov, V. Kossionides, E. Lacoste, V. Leeb, H. Lindote, A. Lopes, I. Lozano, M. Lukic, S. Markov, S. Marrone, S. Martinez-Val, J. Mastinu, P. Mengoni, A. Milazzo, P. Minguez, E. Molina-Coballes, A. Moreau, C. Neves, F. Oberhummer, H. O'brien, S. Papadopoulos, I. Papavengelou, T. Paradela, C. Pavlik, A. Pavlopoulos, P. Perez-Parra, A. Perlado, J. Peskov, V. Perrot, L. Peskov, V. Plag, R. Plompen, A. Plukis, A. Poch, A. Policarpo, A. Pretel, C. Quesada, J. Radici, M. Raman, S. Rapp, W. Reifarth, R. Rejmund, F. Rosetti, M. Rubbia, C. Rudolf, G. Rullhusen, P. Salgado, J. Savvidis, E. Stephan, C. Tagliente, G. Tain, J. Tapia, C. Tassan-Got, L. Tavora, L. Terlizzi, R. Terrani, M. Tsangas, N. Vannini, G. Vaz, P. Ventura, A. Villamarin-Fernandez, D. Vincente-Vincente, M. Vlachoudis, V. Vlastou, R. Voss, F. Wendler, H. Wiescher, M. Wisshak, K. Zanini, L.

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Nuclear Experiment
Abstract

A Micromegas detector was used in the neutron Time-Of-Flight (n_TOF) facility at CERN to evaluate the spatial distribution of the neutron beam as a function of its kinetic energy. This was achieved over a large range of neutron energies by using two complementary processes: at low energy by capture of a neutron via the 6Li(n,α)t reaction, and at high energy by elastic scattering of neutrons on gas nuclei (argon+isobutane or helium+isobutane). Data are compared to Monte Carlo simulations and an analytic function fitting the beam profile has been calculated with a sufficient precision to use in neutron capture experiments at the n_TOF facility. © 2004 Elsevier B.V. All rights reserved.

Published
2004

7. A low-mass neutron flux monitor for the n_TOF facility at CERN

Author

Mastinu, P.F. Abbondanno, U. Aerts, G. Alvarez, H. Andriamonje, S. Angelopoulos, A. Assimakopoulos, P. Bacri, C.O. Badurek, G. Baumann, P. Bečvář, F. Beer, H. Benlliure, J. Berthier, B. Berthomieux, E. Boffi, S. Borcea, C. Boscolo-Marchi, E. Bustreo, N. Calviño, P. Cano-Ott, D. Capote, R. Carlson, P. Cennini, P. Chepel, V. Chiaveri, E. Coceva, C. Colonna, N. Cortes, G. Cortina, D. Couture, A. Cox, J. Dababneh, S. Dahlfors, M. David, S. Dolfini, R. Domingo-Pardo, C. Duran, I. Eleftheriadis, C. Embid-Segura, M. Ferrant, L. Ferrari, A. Ferreira-Lourenco, L. Ferreira-Marques, R. Frais-Koelbl, H. Furman, W.I. Giomataris, Y. Goncalves, I.F. Gonzalez-Romero, E. Goverdovski, A. Gramegna, F. Griesmayer, E. Gunsing, F. Haight, R. Heil, M. Herrera-Martinez, A. Ioannides, K.G. Janeva, N. Jericha, E. Käppeler, F. Kadi, Y. Karamanis, D. Kelic, A. Ketlerov, V. Kitis, G. Koehler, P.E. Konovalov, V. Kossionides, E. Lacoste, V. Leeb, H. Lindote, A. Lopes, M.I. Loriggiola, M. Lozano, M. Lukic, S. Markov, S. Marigo, S. Marrone, S. Martinez-Val, J. Mengoni, A. Milazzo, P.M. Minguez, E. Molina-Coballes, A. Moreau, C. Neves, F. Oberhummer, H. O'Brien, S. Pancin, J. Papaevangelou, T. Paradela, C. Pavlik, A. Pavlopoulos, P. Perez-Parra, A. Perlado, J.M. Perrot, L. Peskov, V. Plag, R. Plompen, A. Plukis, A. Poch, A. Policarpo, A. Pretel, C. Quesada, J.M. Radici, M. Raman, S. Rapp, W. Rauscher, T. Reifarth, R. Rejmund, F. Rosetti, M. Rubbia, C. Rudolf, G. Rullhusen, P. Salgado, J. Savvidis, E. Soares, J.C. Stephan, C. Tagliente, G. Tain, J.L. Tapia, C. Tassan-Got, L. Tavora, L.M.N. Terlizzi, R. Terrani, M. Tsangas, N. Vannini, G. Vaz, P. Ventura, A. Villamarin-Fernandez, D. Vincente-Vincente, M. Vlachoudis, V. Vlastou, R. Voss, F. Wendler, H. Wiescher, M. Wisshak, K. Zanini, L.

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Physics::Accelerator Physics, Nuclear Experiment
Abstract

A small-mass system has been developed for monitoring the flux of neutrons with energy up to 1 MeV at the new time-of-flight facility at CERN, n_TOF. The monitor is based on a thin Mylar foil with a 6Li deposit, placed in the neutron beam, and an array of Silicon detectors, placed outside the beam, for detecting the products of the 6Li(n, α)3H reaction. The small amount of material on the beam ensures a minimal perturbation of the flux and minimizes the background related to scattered neutrons. Moreover, a further reduction of the γ-ray background has been obtained by constructing the scattering chamber hosting the device in carbon fibre. A detailed description of the flux monitor is here presented, together with the characteristics of the device, in terms of efficiency, resolution and induced background. The use of the monitor in the measurement of neutron capture cross-sections at n-TOF is discussed.

Published
2004

8. A low-mass neutron flux monitor for the n_TOF facility at CERN

Author

Mastinu, Pf, Abbondanno, U., Aerts, G., Alvarez, H., Andriamonje, S., Angelopoulos, A., Assimakopoulos, P., Bacri, Co, Badurek, G., Baumann, P., Becvar, F., Beer, H., Benlliure, J., Berthier, B., Berthomieux, E., Boffi, S., Borcea, C., Boscolo-Marchi, E., Bustreo, N., Calvino, P., Cano-Ott, D., Capote, R., Carlson, P., Cennini, P., Chepel, V., Chiaveri, E., Coceva, C., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., Dahlfors, M., David, S., Dolfini, R., Domingo-Pardo, C., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Lourenco, L., Ferreira-Marques, R., Frais-Koelbl, H., Furman, Wi, Giomataris, Y., Goncalves, If, Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haight, R., Heil, M., Herrera-Martinez, A., Ioannides, Kg, Janeva, N., Jericha, E., Kappeler, F., Kadi, Y., Karamanis, D., Kelic, A., Ketlerov, V., Kitis, G., Koehler, Pe, Konovalov, V., Kossionides, E., Lacoste, V., Leeb, H., Lindote, A., Lopes, Mi, Loriggiola, M., Lozano, M., Lukic, S., Markov, S., Marigo, S., Marrone, S., Martinez-Val, J., Mengoni, A., Milazzo, Pm, Minguez, E., Molina-Coballes, A., Moreau, C., Neves, F., Oberhummer, H., O Brien, S., Pancin, J., Papaevangelou, T., Paradela, C., Pavlik, A., Pavlopoulos, P., Perez-Parra, A., Perlado, Jm, Perrot, L., Peskov, V., Plag, R., Plompen, A., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, Jm, Radici, M., Raman, S., Rapp, W., Rauscher, T., Reifarth, R., Rejmund, F., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Savvidis, E., Soares, Jc, Stephan, C., Tagliente, G., Tain, Jl, Tapia, C., Tassan-Goth, L., Tavora, Lmn, Terlizzi, R., Terrani, M., Tsangas, N., Vannini, G., Vaz, P., Ventura, A., Villamarin-Fernandez, D., Vincente-Vincente, M., Vlachoudis, V., Vlastou, R., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Zanini, L., and nTOF Collaboration

Abstract

A small-mass system has been developed for monitoring the flux of neutrons with energy up to 1 MeV at the new time-of-flight facility at CERN, n_TOF. The monitor is based on a thin Mylar foil with a Li-6 deposit, placed in the neutron beam, and an array of Silicon detectors, placed outside the beam, for detecting the products of the Li-6(n, alpha)H-3 reaction. The small amount of material on the beam ensures a minimal perturbation of the flux and minimizes the background related to scattered neutrons. Moreover, a further reduction of the gamma-ray background has been obtained by constructing the scattering chamber hosting the device in carbon fibre. A detailed description of the flux monitor is here presented, together with the characteristics of the device, in terms of efficiency, resolution and induced background. The use of the monitor in the measurement of neutron capture cross-sections at n_TOF is discussed. Brazilian Journal of Physics

Published
2004

9. Measurement of the n(-)TOF beam profile with a micromegas detector

Author

Pancin, J., Abbondanno, U., Aerts, G., Alvarez, H., Andriamonje, S., Angelopoulos, A., Assimakopoulos, P., Bacri, C. O., Badurek, G., Baumann, P., Becvar, F., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, J., Radici, M., Raman, S., Rapp, W., Reifarth, R., Rejmund, F., Beer, H., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Savvidis, E., Stephan, C., Tagliente, G., Tain, J., Tapia, C., Benlliure, J., Tassan-Got, L., Tavora, L., Terlizzi, R., Terrani, M., Tsangas, N., Vannini, G., Vaz, P., Ventura, A., Villamarin-Fernandez, D., Vincente-Vincente, M., Berthier, B., Vlachoudis, V., Vlastou, R., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Zanini, L., Berthoumieux, E., Boffi, S., Borcea, C., Boscolo-Marchi, E., Bustreo, N., Calvino, F., Cano-ott, D., Capote, R., Carlson, P., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., Dahlfors, M., David, S., Delbart, A., Derre, J., Dolfini, R., Domingo, C., Duran-Escribano, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Lourenco, L., Ferreiramarques, R., Frais-Koelbl, H., Furman, W., Giomataris, Y., Goncalves, I., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haight, R., Heil, M., Herrera-Martinez, A., Ioannides, K., Janeva, N., Jeanneau, F., Jericha, E., Kappeler, F., Kadi, Y., Karamanis, D., Kelic, A., Ketlerov, V., Kitis, G., Koehler, P., Konovalov, V., Kossionides, E., Lacoste, V., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Markov, S., Marrone, S., Martinez-Val, J., Mastinu, P., Mengoni, A., Milazzo, P., Minguez, E., Molina-Coballes, A., Moreau, C., Neves, F., Oberhummer, H., O'brien, S., Papadopoulos, I., Papavengelou, T., Paradela, C., Pavlik, A., Pavlopoulos, P., Perez-Parra, A., Perlado, J., Peskov, V., Perrot, L., Plag, R., and Plompen, A.

Subjects
micromegas, n(-)tof, beam profile, gaseous detector, neutron beam profiler
Abstract

A Micromegas detector was used in the neutron Time-Of-Flight (n-TOF) facility at CERN to evaluate the spatial distribution of the neutron beam as a function of its kinetic energy. This was achieved over a large range of neutron energies by using two complementary processes: at low energy by capture of a neutron via the Li-6(n, alpha)t reaction, and at high energy by elastic scattering of neutrons on gas nuclei (argon + isobutane or helium + isobutane). Data are compared to Monte Carlo simulations and an analytic function fitting the beam profile has been calculated with a sufficient precision to use in neutron capture experiments at the n-TOF facility. (C) 2004 Elsevier B.V. All rights reserved. Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment

Published
2004

10. New experimental validation of the pulse height weighting technique for capture cross-section measurements

Author

Abbondanno, U. Aerts, G. Alvarez, H. Andriamonje, S. Angelopoulos, A. Assimakopoulos, P. Bacri, C.O. Badurek, G. Baumann, P. Bečvář, F. Beer, H. Benlliure, J. Berthier, B. Berthomieux, E. Boffi, S. Borcea, C. Boscolo-Marchi, E. Bustreo, N. Calviño, P. Cano-Ott, D. Capote, R. Carlson, P. Cennini, P. Chepel, V. Chiaveri, E. Coceva, C. Colonna, N. Cortes, G. Cortina, D. Couture, A. Cox, J. Dababneh, S. Dahlfors, M. David, S. Dolfini, R. Domingo-Pardo, C. Duran, I. Eleftheriadis, C. Embid-Segura, M. Ferrant, L. Ferrari, A. Ferreira-Lourenco, L. Ferreira-Marques, R. Frais-Koelbl, H. Furman, W.I. Giomataris, Y. Goncalves, I.F. Gonzalez-Romero, E. Goverdovski, A. Gramegna, F. Griesmayer, E. Gunsing, F. Haight, R. Heil, M. Herrera-Martinez, A. Ioannides, K.G. Janeva, N. Jericha, E. Käppeler, F. Kadi, Y. Karamanis, D. Kelic, A. Ketlerov, V. Kitis, G. Koehler, P.E. Konovalov, V. Kossionides, E. Lacoste, V. Leeb, H. Lindote, A. Lopes, M.I. Lozano, M. Lukic, S. Markov, S. Marrone, S. Martinez-Val, J. Mastinu, P. Mengoni, A. Milazzo, P.M. Minguez, E. Molina-Coballes, A. Moreau, C. Neves, F. Oberhummer, H. O'Brien, S. Pancin, J. Papaevangelou, T. Paradela, C. Pavlik, A. Pavlopoulos, P. Perez-Parra, A. Perlado, J.M. Perrot, L. Peskov, V. Plag, R. Plompen, A. Plukis, A. Poch, A. Policarpo, A. Pretel, C. Quesada, J.M. Radici, M. Raman, S. Rapp, W. Rauscher, T. Reifarth, R. Rejmund, F. Rosetti, M. Rubbia, C. Rudolfh, G. Rullhusen, P. Salgado, J. Savvidis, E. Soares, J.C. Stephan, C. Tagliente, G. Tain, J.L. Tapia, C. Tassan-Got, L. Tavora, L.M.N. Terlizzi, R. Terrani, M. Tsangas, N. Vannini, G. Vaz, P. Ventura, A. Villamarin-Fernandez, D. Vincente-Vincente, M. Vlachoudis, V. Vlastou, R. Voss, F. Wendler, H. Wiescher, M. Wisshak, K. Zanini, L.

Abstract

The accuracy of the pulse height weighting technique for the determination of neutron capture cross-sections is investigated. The technique is applied to measurements performed with C6D6 liquid scintillation detectors of two different types using capture samples of various dimensions. The data for well-known (n,γ) resonances are analyzed using weighting functions obtained from Monte Carlo simulations of the experimental set-up. Several causes of systematic deviation are identified and their effect is quantified. In all the cases measured the reaction yield agrees with the standard value within 2%. © 2003 Elsevier B.V. All rights reserved.

Published
2004

11. Measurements of Fission Cross Sections of Actinides

Author

Stéphan, C, Cennini, P, Mengoni, A, Abbondanno, U, Aerts, G, Alvarez, H, Andriamonje, Samuel A, Angelopoulos, Angelos, Assimakopoulos, P A, Bacri, C O, Badurek, G, Baumann, P, Becvar, F, Beer, H, Benlliure, J, Berthier, B, Berthoumieux, E, Bertuzzi, J P, Blanc, D, Bonzano, R, Borcea, C, Bourquin, P, Bustreo, N, Buttkus, J, Calviño, F, Cano-Ott, D, Capote, R, Cappi, R, Carlier, J C, Carlson, P J, Chapuis, D, Chepel, V Yu, Chiaveri, Enrico, Chohan, V, Coceva, C, Colonna, N, Come, J P, Cortés, G, Cortina-Gil, D, Couture, A, Cox, J, Dababneh, S, Daems, G, Dahlfors, M, Dangendorf, V, David, S, Dobers, T, Dolfini, R, Domingo-Pardo, C, Duran-Escribano, I, Durieu, L, Eleftheriadis, C, Embid-Segura, M, Ferrari, A, Ferreira-Lourenço, L, Ferreira-Marques, R, Flament, C, Frais-Kölbl, H, Furman, W I, Gaidon, M, Gascon, J, Gasser, D, Giomataris, Ioanis, Giovannozzi, Massimo, Gonçalves, I F, González, E, Goulas, I, Goverdovski, A A, Gramegna, F, Griesmayer, E, Gunsing, F, Haight, R C, Heil, M, Herrera-Martínez, A, Ioannides, K G, Janeva, N, Jericha, E, Kadi, Y, Käppeler, F K, Karamanis, D, Kerveno, V, Ketlerov, V, Kitis, G, Köhler, P E, Konovalov, V, Kossionides, E, Kowalik, G, Kühnl-Kinel, J, Lacoste, V, Lacroix, Jean Michel, Leeb, H, Lindote, A, Lopes, I M, Lozano, M, Lukic, S, Magnin, R, Mahner, E, Marie, F, Markov, S, Marrone, S, Martínez-Val, J M, Mastinu, P, Messerli, R, Métral, G, Milazzo, P M, Minguez, E, Molina-Coballes, A, Monteiro, J, Moreau, C, Neves, F, Nicquevert, B, Nolte, R, Oberhummer, Heinz, O'Brien, S, Pancin, J, Paradela-Dobarro, C, Pavlik, A, Pavlopoulos, P, Pérez-Parra, A, Perlado, J M, Perrot, L, Peskov, Vladimir, Plag, R, Plompen, A, Plukis, A, Poch, A, Poehler, M, Policarpo, Armando, Pretel, C, Quesada, J M, Radermacher, J P, Raich, U, Raman, S, Rapp, W, Rauscher, T, Reifarth, R, Rejmund, F, Riunaud, J P, Rollinger, G, Rosetti, M, Rubbia, Carlo, Rudolf, G, Rullhusen, P, Saldaña, F, Salgado, J, Savvidis, E, Silari, Marco, Soares, J C, Tagliente, G, Taín, J L, Tapia, C, Tassan-Got, L, Tavora, L M N, Terlizzi, R, Terrani, M, Tsangas, N, Van Baaren, W, Vannini, G, Vaz, P, Ventura, A, Villamarín-Fernández, D, Vincente-Vincente, M, Vlachoudis, V, Vlastou, R, Voss, F, Weierganz, M, Wendler, H, Wiescher, M, Wisshak, K, Zanini, L, and Zanolli, M

Subjects
Detectors and Experimental Techniques
Published
2003

12. Study of the background in the measuring station at the n_TOF facility at CERN: sources and solutions

Author

Zanini, L, Abbondanno, U, Aerts, G, Andriamonje, Samuel A, Andrzejewski, J, Angelopoulous, A, Assimakopoulos, Panayiotis, Bacri, C-O, Badurek, G, Berthoumieux, E, Baumann, P, Beer, H, Benlliure, J, Berthier, B, Bondarenko, I, Borcea, C, Bos, A J J, Boscolo-Marchi, E, Bustreo, N, Calviño, F, Cano-Ott, D, Capote, R, Carlson, P, Charpak, Georges, Chauvin, N, Cennini, P, Chepel, V, Colonna, N, Cortés, G, Cortina-Gil, D, Corvi, F, Cusmano, A, Dababneh, S, Dahlfors, M, Damianoglou, D, David, S, Dimovasili, E, Domingo, C, Doroshenko, A, Duran-Escribano, I, Eleftheriadis, C, Embid, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Frais-Kölbl, H, Furman, W, Fursov, B, Garzón, J A, Giomataris, Ioanis, Gledenov, Y, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Gunsing, F, Haefner, P, Haight, R, Heil, M, Herrera-martinez, A, Hollander, P, Ioannou, P, Isaev, S, Jericha, E, Kadi, Y, Kappeler, F, Karadimos, D, Karamanis, D, Kayukova, A, Kazakov, L, Kelic, A, Ketlerov, V, Kitis, G, Köhler, P E, Kopach, Y, Kossionides, E, Kroshkina, I, Lacoste, V, Lamboudis, C, Leeb, H, Leprêtre, A, Lopes, M, Lozano, M, Marrone, S, Martínez-Val, J M, Mastinu, P, Mengoni, A, Meunier, R, Mezentsev, A J, Milazzo, P, Minguez, E, Mitrofanov, V, Moreau, C, Müller, A, Nicolis, N, Nikolenkov, V, Oberhummer, Heinz, Pakou, A, Pancin, J, Papadopoulous, K, Papaevangelou, T, Paradela, C, Paradelis, T, Pavlik, A, Pavlopoulos, P, Perrez-Parra, A, Perriale, L, Perlado, J M, Peskov, Vladimir, Piksaikin, V, Plag, R, Plompen, A, Plukis, A, Poch, A, Policarpo, Armando, Popov, A, Popov, Y P, Pretel, C, Quesada, J M, Radermacher, E, Rapp, W, Rauscher, T, Reifarth, R, Rejmund, F, Rubbia, Carlo, Rudolf, G, Rullhusen, P, Sakelliou, L, Saldaña, F, Samylin, B, Savvidis, I, Savvidis, S, Sedyshev, P, Stéphan, C, Szalanski, P, Tagliente, G, Taín, J L, Tapia, C, Tassan-Got, L, Terchychnyi, R, Tsabaris, C, Tsangas, N, van Eijk, C W E, Vannini, G, Ventura, A, Villamarin, A, Vlachoudis, V, Vlastou, R, Voinov, A, Voss, F, Wendler, H, Wiescher, M, Wisshak, K, Zeinalov, S, and Zhuravlev, B

Subjects
Accelerators and Storage Rings
Abstract

A background roughly two orders of magnitude higher than tolerable was found in the n_TOF facility at CERN during the first measurements [1]. This note describes a series of additional measurements performed in the n_TOF experimental area to study the origin and the characteristics of the background. The program of these measurements was determined taking into account the results from the simulations carried out by the EET group [2]. A first phase of measurements confirmed what was expected from the simulations, namely that the dominant source of background was due to neutrons generated by negative muon capture. Actions to reduce the background were taken according to the results from both measurements and simulations. An iron shielding wall 3.2 m thick was then placed in between the sweeping magnet and the second collimator, with the purpose of stopping most of the muons. In a second phase of measurements, results showed that the additional shielding reduced the main component of the background by about a factor of 30.

Published
2001

13. Status report on n_TOF

Author

Pavlopoulos, P, Abbondanno, U, Andriamonje, E, Andrzejewski, J, Angelopoulos, Angelos, Assimakopoulos, P A, Bacri, C O, Badurek, G, Baumann, P, Beer, H, Berthier, B, Betev, B L, Bondarenko, I V, Borcea, C, Bos, A J, Bustreo, N, Calviño, F, Cano-Ott, D, Capote, R, Carlson, P J, Charpak, Georges, Chauvin, N, Cennini, P, Chepel, V Yu, Colonna, N, Cortés, G, Corvi, F, Dahlfors, M, Damianoglou, D, David, S, Dimovasili, E, Domingo, C, Doroshenko, A A, Durán-Escribano, I, Eleftheriadis, C, Embid, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Frais-Kölbl, H, Furman, W I, Fursov, B, Garzón, J A, Giomataris, Ioanis, Gledenov, Yu M, González-Romero, E M, Goverdovski, A A, Gramegna, F, Griesmayer, E, Gunsing, F, Haight, R C, Heil, M, Hollander, P, Ioannides, K G, Ioannou, P, Isaev, S, Jericha, E, Kadi, Y, Käppeler, F K, Karadimos, D, Karamanis, D, Kayukov, A, Kazakov, L, Kelic, A, Ketlerov, V, Kitis, G, Köhler, P E, Kopach, Yu N, Kossionides, E, Kroshkina, I, Lacoste, V, Lamboudis, C, Leeb, H, Leprêtre, A, Lopes, M, Lozano, M, Marrone, S, Martínez-Val, J M, Mastinu, P, Mengoni, A, Meunier, R, Mezentseva, J, Milazzo, P M, Minguez, E, Mitrofanov, V P, Nicolis, N G, Nikolenko, V G, Oberhummer, Heinz, Pakou, A, Pancin, J, Papadopoulos, K, Papavangelou, T, Paradela, C, Paradelis, T, Pavlik, A, Pérez-Parra, A, Perriale, L, Perlado, J M, Peskov, Vladimir, Piksaikin, V M, Plag, R, Plompen, A, Poch, A, Policarpo, Armando, Popov, A, Popov, Yu P, Pretel, C, Quesada, J M, Radermacher, E, Rauscher, T, Reifarth, R, Rejmund, F, Rubbia, Carlo, Rudolf, G, Rullhusen, P, Sakelliou, L, Saldaña, F, Samylin, B, Savvidis, E, Savvidis, S, Schäfer, E, Sedyshev, P V, Stéphan, C, Szalanski, P, Tagliente, G, Taín, J L, Tapia, C, Tassan-Got, L, Terchychnyi, R, Tsabaris, C, Tsangas, N, van Eijk, C W E, Vannini, G, Ventura, A, Villamarin, A, Vlachoudis, V, Vlastou, R, Voinov, A V, Voss, F, Wendler, H, Wiescher, M, Wisshak, K, Yanini, L, Zeinalov, S S, and Zhuravlev, B

Subjects
Detectors and Experimental Techniques
Published
2001

14. Finding the vertex position using the SPD in stand alone mode and the effects of the off-axis vertexm

Author

Nilsen, B S, Vannucci, Luigi, and Bustreo, N

Subjects
Detectors and Experimental Techniques
Abstract

The Inner T rac king System (ITS) detector of the Al- ice apparatus giv es a go o d opp ortunit y to determine the v ertex p osition, along the b eam axis (z co ordinate), ev en in the absence of trac king and, therefore, without ev en t reconstruction. This can b e obtained b y using only the information of the t w o Silicon Pixel Detector (SPD) la y ers. In principle it is suÆcien t to lo ok at the correlation b et w een the z- co ordinate of the t w o hits generated, b y the same trac k, in these t w ola y ers. In fact in the plane r-z, where r the distance of the hit from z axis (r= p x 2 + y 2 ), the pro jec- tion of a trac k app ears as a straigh tline. Consequen tly the z-p osition of the v ertex corresp onds to the crossing bet w een this line and the b eam axis if the trac kis due to a primary particle. Ob viously it is not p ossible to distinguish the primary particles from the pro ducts of the secondary deca y with- out ev en t reconstruction. Ho w ev er, the con tribution of the secondary trac ks, to the total distribution is statisti- cally negligible. This can b e seen in Fig. 1 whic hsho ws the densit y of the c harged particle in the t w oSPD la y ers for an ev en t generated with v ertex in (0,0,0). In partic- ular the distributions of the secondary particles (the one with lo w er statistics) is an order of magnitude smaller than the inclusiv e distribution. T o optimize the v ertex determination w etookin to ac- coun tsev eral sources of uncertain t yand w e reduced their e ects as far as p ossible. Moreo v er, t w o di eren t algo- rithms for the v ertex determination w ere dev elop ed and their p erformances w ere studied and compared

Published
2001

15. A low-mass neutron flux monitor for the n _TOF facility at CERN

Author

Mastinu, P. F., primary, Abbondanno, U., additional, Aerts, G., additional, Alvarez, H., additional, Andriamonje, S., additional, Angelopoulos, A., additional, Assimakopoulos, P., additional, Bacri, C.O., additional, Badurek, G., additional, Baumann, P., additional, Becvár, F., additional, Beer, H., additional, Benlliure, J., additional, Berthier, B., additional, Berthomieux, E., additional, Boffi, S., additional, Borcea, C., additional, Boscolo-Marchi, E., additional, Bustreo, N., additional, Calviño, P., additional, Cano-Ott, D., additional, Capote, R., additional, Carlson, P., additional, Cennini, P., additional, Chepel, V., additional, Chiaveri, E., additional, Coceva, C., additional, Colonna, N., additional, Cortes, G., additional, Cortina, D., additional, Couture, A., additional, Cox, J., additional, Dababneh, S., additional, Dahlfors, M., additional, David, S., additional, Dolfini, R., additional, Domingo-Pardo, C., additional, Duran, I., additional, Eleftheriadis, C., additional, Embid-Segura, M., additional, Ferrant, L., additional, Ferrari, A., additional, Ferreira-Lourenco, L., additional, Ferreira-Marques, R., additional, Frais-Koelbl, H., additional, Furman, W.I., additional, Giomataris, Y., additional, Goncalves, I.F., additional, Gonzalez-Romero, E., additional, Goverdovski, A., additional, Gramegna, F., additional, Griesmayer, E., additional, Gunsing, F., additional, Haight, R., additional, Heil, M., additional, Herrera-Martinez, A., additional, Ioannides, K.G., additional, Janeva, N., additional, Jericha, E., additional, Käppeler, F., additional, Kadi, Y., additional, Karamanis, D., additional, Kelic, A., additional, Ketlerov, V., additional, Kitis, G., additional, Koehler, P.E., additional, Konovalov, V., additional, Kossionides, E., additional, Lacoste, V., additional, Leeb, H., additional, Lindote, A., additional, Lopes, M.I., additional, Loriggiola, M., additional, Lozano, M., additional, Lukic, S., additional, Markov, S., additional, Marigo, S., additional, Marrone, S., additional, Martinez-Val, J., additional, Mengoni, A., additional, Milazzo, P.M., additional, Minguez, E., additional, Molina-Coballes, A., additional, Moreau, C., additional, Neves, F., additional, Oberhummer, H., additional, O'Brien, S., additional, Pancin, J., additional, Papaevangelou, T., additional, Paradela, C., additional, Pavlik, A., additional, Pavlopoulos, P., additional, Perez-Parra, A., additional, Perlado, J.M., additional, Perrot, L., additional, Peskov, V., additional, Plag, R., additional, Plompen, A., additional, Plukis, A., additional, Poch, A., additional, Policarpo, A., additional, Pretel, C., additional, Quesada, J.M., additional, Radici, M., additional, Raman, S., additional, Rapp, W., additional, Rauscher, T., additional, Reifarth, R., additional, Rejmund, F., additional, Rosetti, M., additional, Rubbia, C., additional, Rudolf, G., additional, Rullhusen, P., additional, Salgado, J., additional, Savvidis, E., additional, Soares, J.C., additional, Stephan, C., additional, Tagliente, G., additional, Tain, J.L., additional, Tapia, C., additional, Tassan-Got, L., additional, Tavora, L.M.N., additional, Terlizzi, R., additional, Terrani, M., additional, Tsangas, N., additional, Vannini, G., additional, Vaz, P., additional, Ventura, A., additional, Villamarin-Fernandez, D., additional, Vincente-Vincente, M., additional, Vlachoudis, V., additional, Vlastou, R., additional, Voss, F., additional, Wendler, H., additional, Wiescher, M., additional, Wisshak, K., additional, and Zanini, L., additional

Published
2004
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16. IMPROVED ACCURACY (N,γ) MEASUREMENTS AT N_TOF.

Author

ABBONDANNO, U., AERTS, G., ALVAREZ, H., ANDRIAMONJE, S., ANGELOPOULOS, A., ASSIMAKOPOULOS, P., BACRI, C., BADUREK, G., BAUMANN, P., BEGGAR, F., BEER, H., BENLLIURE, J., BERTHIER, B., BERTHOUMIEUX, E., BOFFI, S., BORCEA, C., BOSCOLO-MARCHI, E., BUSTREO, N., CALVINO, F., and CANO-OTT, D.

Subjects
NEUTRON capture, NUCLEAR astrophysics, RADIATION, GAMMA rays, NUCLEAR counters
Published
2003

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