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8. High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–500 GeV with the Alpha Magnetic Spectrometer on the International Space Station

Author

Accardo, L, Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Carosi, G, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Cindolo, F, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Henning, R, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Levi, G, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Massera, F, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Monreal, B, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Pilastrini, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rossi, L, Rozhkov, A, Rozza, D, Rybka, G, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, Schulz von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Volpini, G, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, K, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhou, F, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, LA VACCA, GIUSEPPE, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, TACCONI, MAURO, Accardo, L, Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Carosi, G, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Cindolo, F, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Henning, R, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Levi, G, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Massera, F, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Monreal, B, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Pilastrini, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rossi, L, Rozhkov, A, Rozza, D, Rybka, G, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, Schulz von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Volpini, G, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, K, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhou, F, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, LA VACCA, GIUSEPPE, ROZZA, DAVIDE, Zurbach, C., BOELLA, GIULIANO FILIPPO, GERVASI, MASSIMO, PENSOTTI, SIMONETTA, and TACCONI, MAURO

Abstract

A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200GeV the positron fraction no longer exhibits an increase with energy.

Published
2014

13. High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station.

Author

Accardo, L., Aguilar, M., Aisa, D., Alpat, B., Alvino, A., Ambrosi, G., Andeen, K., Arruda, L., Attig, N., Azzarello, P., Bachlechner, A., Barao, F., Barrau, A., Barrin, L., Bartoloni, A., Basara, L., Battarbee, M., Battiston, R., Bazo, J., and Becker, U.

Subjects
*POSITRON beams, *COSMIC rays, *ALPHA magnetic spectrometers, *ELECTRONS
Abstract

A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200 GeV the positron fraction no longer exhibits an increase with energy. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
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14. Microzine, Vol.1, No.3

Author

Dana, A., Haynes, C., and Accardo, L.

Subjects
Evaluation, Electronic Publishing Industry, Magazines, Programs, Educational Software, Software, Elementary Schools, Microzine Vol.1, No.3 (computer program) -- Evaluation
Published
1984

16. High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station

Author

Laboratoire de Physique Subatomique et de Cosmologie (LPSC) ; CNRS - IN2P3 - Université Grenoble Alpes, Laboratoire d'Annecy le Vieux de Physique des Particules (LAPP) ; CNRS - IN2P3 - Université de Savoie, Laboratoire Univers et Particules de Montpellier (LUPM) ; CNRS - IN2P3 - Université Montpellier II - Sciences et techniques, AMS, Accardo, L., Aguilar, M., Aisa, D., Alpat, B., Alvino, A., Ambrosi, G., Andeen, K., Arruda, L., Attig, N., Azzarello, P., Bachlechner, A., Barao, F., Barrau, A., Barrin, L., Bartoloni, A., Basara, L., Battarbee, M., Battiston, R., Bazo, J., Becker, U., Behlmann, M., Beischer, B., Berdugo, J., Bertucci, B., Bigongiari, G., Bindi, V., Bizzaglia, S., Bizzarri, M., Boella, G., De Boer, W., Bollweg, K., Bonnivard, V., Borgia, B., Borsini, S., Boschini, M.J., Bourquin, M., Burger, J., Cadoux, F., Cai, X.D., Capell, M., Caroff, S., Carosi, G., Casaus, J., Cascioli, V., Castellini, G., Cernuda, I., Cerreta, D., Cervelli, F., Chae, M.J., Chang, Y.H., Chen, A.I., Chen, H., Cheng, G.M., Chen, H.S., Cheng, L., Chikanian, A., Chou, H.Y., Choumilov, E., Choutko, V., Chung, C.H., Cindolo, F., Clark, C., Clavero, R., Coignet, G., Consolandi, C., Contin, A., Corti, C., Coste, B., Cui, Z., Dai, M., Delgado, C., Della Torre, S., Demirköz, M.B., Derome, L., Di Falco, S., Di Masso, L., Dimiccoli, F., Díaz, C., Von Doetinchem, P., Du, W.J., Duranti, M., D'Urso, D., Eline, A., Eppling, F.J., Eronen, T., Fan, Y.Y., Farnesini, L., Feng, J., Fiandrini, E., Fiasson, A., Finch, E., Fisher, P., Galaktionov, Y., Gallucci, G., García, B., García-López, R., Gast, H., Gebauer, I., Gervasi, M., Ghelfi, A., Gillard, W., Giovacchini, F., Goglov, P., Gong, J., Goy, C., Grabski, V., Grandi, D., Graziani, M., Guandalini, C., Guerri, I., Guo, K.H., Haas, D., Habiby, M., Haino, S., Han, K.C., He, Z.H., Heil, M., Henning, R., Hoffman, J., Hsieh, T.H., Huang, Z.C., Huh, C., Incagli, M., Ionica, M., Jang, W.Y., Jinchi, H., Kanishev, K., Kim, G.N., Kim, K.S., Kirn, Th., Kossakowski, R., Kounina, O., Kounine, A., Koutsenko, V., Krafczyk, M.S., Kunz, S., La Vacca, G., Laudi, E., Laurenti, G., Lazzizzera, I., Lebedev, A., Lee, H.T., Lee, S.C., Leluc, C., Levi, G., Li, H.L., Li, J.Q., Li, Q., Li, T.X., Li, W., Li, Y., Li, Z.H., Li, Z.Y., Lim, S., Lin, C.H., Lipari, P., Lippert, T., Liu, D., Liu, H., Lolli, M., Lomtadze, T., Lu, M.J., Lu, Y.S., Luebelsmeyer, K., Luo, F., Luo, J.Z., Lv, S.S., Majka, R., Malinin, A., Mañá, C., Marín, J., Martin, T., Martínez, G., Masi, N., Massera, F., Maurin, D., Menchaca-Rocha, A., Meng, Q., Mo, D.C., Monreal, B., Morescalchi, L., Mott, P., Müller, M., Ni, J.Q., Nikonov, N., Nozzoli, F., Nunes, P., Obermeier, A., Oliva, A., Orcinha, M., Palmonari, F., Palomares, C., Paniccia, M., Papi, A., Pauluzzi, M., Pedreschi, E., Pensotti, S., Pereira, R., Pilastrini, R., Pilo, F., Piluso, A., Pizzolotto, C., Plyaskin, V., Pohl, M., Poireau, V., Postaci, E., Putze, A., Quadrani, L., Qi, X.M., Rancoita, P.G., Rapin, D., Ricol, J.S., Rodríguez, I., Rosier-Lees, S., Rossi, L., Rozhkov, A., Rozza, D., Rybka, G., Sagdeev, R., Sandweiss, J., Saouter, P., Sbarra, C., Schael, S., Schmidt, S.M., Schuckardt, D., Schulz Von Dratzig, A., Schwering, G., Scolieri, G., Seo, E.S., Shan, B.S., Shan, Y.H., Shi, J.Y., Shi, X.Y., Shi, Y.M., Siedenburg, T., Son, D., Spada, F., Spinella, F., Sun, W., Sun, W.H., Tacconi, M., Tang, C.P., Tang, X.W., Tang, Z.C., Tao, L., Tescaro, D., C. C. Ting, Samuel, Ting, S.M., Tomassetti, N., Torsti, J., Türkoğlu, C., Urban, T., Vagelli, V., Valente, E., Vannini, C., Valtonen, E., Vaurynovich, S., Vecchi, M., Velasco, M., Vialle, J.P., Vitale, V., Volpini, G., Wang, L.Q., Wang, Q.L., Wang, R.S., Wang, X., Wang, Z.X., Weng, Z.L., Whitman, K., Wienkenhöver, J., Wu, H., Wu, K.Y., Xia, X., Xie, M., Xie, S., Xiong, R.Q., Xin, G.M., Xu, N.S., Xu, W., Yan, Q., Yang, J., Yang, M., Ye, Q.H., Yi, H., Yu, Y.J., Yu, Z.Q., Zeissler, S., Zhang, J.H., Zhang, M.T., Zhang, X.B., Zhang, Z., Zheng, Z.M., Zhou, F., Zhuang, H.L., Zhukov, V., Zichichi, A., Zimmermann, N., Zuccon, P., Zurbach, C., Laboratoire de Physique Subatomique et de Cosmologie (LPSC) ; CNRS - IN2P3 - Université Grenoble Alpes, Laboratoire d'Annecy le Vieux de Physique des Particules (LAPP) ; CNRS - IN2P3 - Université de Savoie, Laboratoire Univers et Particules de Montpellier (LUPM) ; CNRS - IN2P3 - Université Montpellier II - Sciences et techniques, AMS, Accardo, L., Aguilar, M., Aisa, D., Alpat, B., Alvino, A., Ambrosi, G., Andeen, K., Arruda, L., Attig, N., Azzarello, P., Bachlechner, A., Barao, F., Barrau, A., Barrin, L., Bartoloni, A., Basara, L., Battarbee, M., Battiston, R., Bazo, J., Becker, U., Behlmann, M., Beischer, B., Berdugo, J., Bertucci, B., Bigongiari, G., Bindi, V., Bizzaglia, S., Bizzarri, M., Boella, G., De Boer, W., Bollweg, K., Bonnivard, V., Borgia, B., Borsini, S., Boschini, M.J., Bourquin, M., Burger, J., Cadoux, F., Cai, X.D., Capell, M., Caroff, S., Carosi, G., Casaus, J., Cascioli, V., Castellini, G., Cernuda, I., Cerreta, D., Cervelli, F., Chae, M.J., Chang, Y.H., Chen, A.I., Chen, H., Cheng, G.M., Chen, H.S., Cheng, L., Chikanian, A., Chou, H.Y., Choumilov, E., Choutko, V., Chung, C.H., Cindolo, F., Clark, C., Clavero, R., Coignet, G., Consolandi, C., Contin, A., Corti, C., Coste, B., Cui, Z., Dai, M., Delgado, C., Della Torre, S., Demirköz, M.B., Derome, L., Di Falco, S., Di Masso, L., Dimiccoli, F., Díaz, C., Von Doetinchem, P., Du, W.J., Duranti, M., D'Urso, D., Eline, A., Eppling, F.J., Eronen, T., Fan, Y.Y., Farnesini, L., Feng, J., Fiandrini, E., Fiasson, A., Finch, E., Fisher, P., Galaktionov, Y., Gallucci, G., García, B., García-López, R., Gast, H., Gebauer, I., Gervasi, M., Ghelfi, A., Gillard, W., Giovacchini, F., Goglov, P., Gong, J., Goy, C., Grabski, V., Grandi, D., Graziani, M., Guandalini, C., Guerri, I., Guo, K.H., Haas, D., Habiby, M., Haino, S., Han, K.C., He, Z.H., Heil, M., Henning, R., Hoffman, J., Hsieh, T.H., Huang, Z.C., Huh, C., Incagli, M., Ionica, M., Jang, W.Y., Jinchi, H., Kanishev, K., Kim, G.N., Kim, K.S., Kirn, Th., Kossakowski, R., Kounina, O., Kounine, A., Koutsenko, V., Krafczyk, M.S., Kunz, S., La Vacca, G., Laudi, E., Laurenti, G., Lazzizzera, I., Lebedev, A., Lee, H.T., Lee, S.C., Leluc, C., Levi, G., Li, H.L., Li, J.Q., Li, Q., Li, T.X., Li, W., Li, Y., Li, Z.H., Li, Z.Y., Lim, S., Lin, C.H., Lipari, P., Lippert, T., Liu, D., Liu, H., Lolli, M., Lomtadze, T., Lu, M.J., Lu, Y.S., Luebelsmeyer, K., Luo, F., Luo, J.Z., Lv, S.S., Majka, R., Malinin, A., Mañá, C., Marín, J., Martin, T., Martínez, G., Masi, N., Massera, F., Maurin, D., Menchaca-Rocha, A., Meng, Q., Mo, D.C., Monreal, B., Morescalchi, L., Mott, P., Müller, M., Ni, J.Q., Nikonov, N., Nozzoli, F., Nunes, P., Obermeier, A., Oliva, A., Orcinha, M., Palmonari, F., Palomares, C., Paniccia, M., Papi, A., Pauluzzi, M., Pedreschi, E., Pensotti, S., Pereira, R., Pilastrini, R., Pilo, F., Piluso, A., Pizzolotto, C., Plyaskin, V., Pohl, M., Poireau, V., Postaci, E., Putze, A., Quadrani, L., Qi, X.M., Rancoita, P.G., Rapin, D., Ricol, J.S., Rodríguez, I., Rosier-Lees, S., Rossi, L., Rozhkov, A., Rozza, D., Rybka, G., Sagdeev, R., Sandweiss, J., Saouter, P., Sbarra, C., Schael, S., Schmidt, S.M., Schuckardt, D., Schulz Von Dratzig, A., Schwering, G., Scolieri, G., Seo, E.S., Shan, B.S., Shan, Y.H., Shi, J.Y., Shi, X.Y., Shi, Y.M., Siedenburg, T., Son, D., Spada, F., Spinella, F., Sun, W., Sun, W.H., Tacconi, M., Tang, C.P., Tang, X.W., Tang, Z.C., Tao, L., Tescaro, D., C. C. Ting, Samuel, Ting, S.M., Tomassetti, N., Torsti, J., Türkoğlu, C., Urban, T., Vagelli, V., Valente, E., Vannini, C., Valtonen, E., Vaurynovich, S., Vecchi, M., Velasco, M., Vialle, J.P., Vitale, V., Volpini, G., Wang, L.Q., Wang, Q.L., Wang, R.S., Wang, X., Wang, Z.X., Weng, Z.L., Whitman, K., Wienkenhöver, J., Wu, H., Wu, K.Y., Xia, X., Xie, M., Xie, S., Xiong, R.Q., Xin, G.M., Xu, N.S., Xu, W., Yan, Q., Yang, J., Yang, M., Ye, Q.H., Yi, H., Yu, Y.J., Yu, Z.Q., Zeissler, S., Zhang, J.H., Zhang, M.T., Zhang, X.B., Zhang, Z., Zheng, Z.M., Zhou, F., Zhuang, H.L., Zhukov, V., Zichichi, A., Zimmermann, N., Zuccon, P., and Zurbach, C.

17. High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–500 GeV with the Alpha Magnetic Spectrometer on the International Space Station

Author

K. H. Guo, A. Lebedev, Dong-Chul Son, Y. Y. Fan, Massimo Gervasi, L. Tao, M. Capell, L. Accardo, C. Sbarra, Yun Shi, Antje Putze, B. Coste, I. Guerri, H. Jinchi, D. Haas, V. Vagelli, G. La Vacca, A. Malinin, A. Piluso, R. Pilastrini, I. Cernuda, I. Lazzizzera, Carlos Díaz, W. De Boer, David Maurin, E. Valente, M. Bourquin, Laurent Derome, D. Grandi, M. Xie, I. Gebauer, X. M. Qi, G. Schwering, J. Bazo, P. G. Rancoita, M. S. Krafczyk, Wei Li, C. Mañá, E. Fiandrini, J. C. Marin, W. Gillard, T. Urban, V. Choutko, B. Bertucci, W. H. Sun, Q. Meng, R. Q. Xiong, Franck Cadoux, P. Nunes, Teimuraz Lomtadze, Fabrizio Giulio Luca Pilo, C. Türkoʇlu, G. Castellini, M. Bizzarri, Won Kyu Calvin Sun, P. Goglov, Mayda Velasco, Federico Cindolo, W. Y. Jang, S. S. Vaurynovich, H. S. Chen, F. Spinella, V. Cascioli, Benjamin Monreal, N. Nikonov, Liqiu Wang, Veronica Bindi, Kwangsoo Kim, Chia-Hui Lin, M. J. Chae, C. Guandalini, M. Duranti, E. Pedreschi, G. Boella, Sadakazu Haino, E. Laudi, Y. J. Yu, Lucio Rossi, S. Xie, G. Coignet, M. Paniccia, Xiaoping Wang, G. Laurenti, S. Zeissler, D. Schuckardt, V. Poireau, Q. H. Ye, J. Gong, F. Giovacchini, Roald Z. Sagdeev, Luca Morescalchi, D. Aisa, C. Goy, R. J. García-López, F. Palmonari, S. Della Torre, X. W. Tang, M. Pauluzzi, Samuel C.C. Ting, Y. H. Chang, Zhixiang Tang, Fei Zhou, F. Massera, Arturo Alejandro Menchaca-Rocha, S. M. Schmidt, G. Ambrosi, V. Vitale, M. Orcinha, J. Q. Li, Valery Zhukov, J. P. Vialle, K. Bollweg, Gongming Xin, H. L. Li, Markus Battarbee, Paolo Zuccon, L. Di Masso, G. Gallucci, L. Basara, G. Volpini, R. Clavero, T. Siedenburg, A. Rozhkov, E. Finch, J. H. Zhang, Davide Rozza, S. Lim, I. Rodríguez, L. Farnesini, S. Borsini, Claudio Corti, A. Fiasson, Z. M. Zheng, A. Obermeier, K. Andeen, A. Contin, D. D'Urso, Mingming Yang, J. Feng, M. Pohl, Z. L. Weng, D. Rapin, V. Plyaskin, E. Postaci, Zheng Wang, X. Y. Shi, Philipp Azzarello, Matthias Heil, Mauro Tacconi, B. S. Shan, J. Casaus, M. Graziani, T. Kirn, G. M. Cheng, Matteo Boschini, J. Wienkenhöver, N. Masi, F. Luo, A. I. Chen, Zhiqi Huang, L. Barrin, M. B. Demirköz, A. Papi, Z. H. He, F. Nozzoli, C. Zurbach, A. Alvino, Hengchang Liu, P. Lipari, S. Bizzaglia, T. X. Li, Varlen Grabski, C. Pizzolotto, T. Eronen, X. Xia, C. Consolandi, A. Schulz von Dratzig, K. Kanishev, Yu. Galaktionov, Lin Cheng, Nicola Tomassetti, Z. Q. Yu, D. C. Mo, Y. Li, W. Xu, Roberto Battiston, J. Berdugo, K. C. Han, S. C. Lee, H. T. Lee, Dong Liu, Behcet Alpat, R. Pereira, Q. L. Wang, S. Di Falco, H. Yi, B. Borgia, F. Spada, J. J. Torsti, S. Pensotti, Antonino Zichichi, S. M. Ting, C. Delgado, S. Schael, A. Ghelfi, S. S. Lv, J. Hoffman, N. Attig, F. Cervelli, Zhijun Zhang, P. Mott, J. Sandweiss, Henning Gast, Tim Martin, Y. H. Shan, G. Scolieri, J. Q. Ni, C. H. Chung, A. Oliva, M. T. Zhang, U. Becker, Fernando Barão, J. S. Ricol, M. Behlmann, D. Cerreta, Ningsheng Xu, Thomas Lippert, C. Leluc, F. J. Eppling, B. Beischer, V. Bonnivard, H. Y. Chou, R. Henning, R. D. Majka, M. Dai, Z. Cui, O. Kounina, G. Rybka, M. Müller, H. Wu, P. Saouter, Peter H. Fisher, K. Luebelsmeyer, D. Tescaro, M. Aguilar, Ruiguang Wang, F. Dimiccoli, K. Whitman, E. Choumilov, R. Kossakowski, G. N. Kim, H. L. Zhuang, A. Barrau, M. J. Lu, A. Bartoloni, Bruce Rafael Mellado Garcia, Luísa Arruda, M. Lolli, C. P. Tang, S. Kunz, A. Eline, Timothy H. Hsieh, J. Y. Shi, J. Yang, A. Chikanian, Gianpaolo Carosi, Changgi Huh, J. Z. Luo, Z. Y. Li, Lucio Quadrani, M. Habiby, A. Bachlechner, X. B. Zhang, Eun-Suk Seo, Ying Lu, S. Rosier-Lees, V. Koutsenko, Eino Valtonen, Z. H. Li, Qiang Li, J. D. Burger, W. J. Du, K. Y. Wu, Manuela Vecchi, C. Vannini, P. von Doetinchem, X. D. Cai, Giuseppe Levi, G. Martinez, C. Palomares, C. Clark, Andrei Kounine, Q. Yan, G. Bigongiari, S. Caroff, N. Zimmermann, M. Incagli, Maria Ionica, Azzarello, Philipp, Bourquin, Maurice, Cadoux, Franck, Haas, Daniel, Habiby Alaoui, Marion, Leluc, Catherine, Li, Yang, Paniccia, Mercedes, Pohl, Martin, Rapin, Divic Jean, Saouter, Pierre, Accardo, L, Aguilar, M, Aisa, D, Alpat, B, Alvino, A, Ambrosi, G, Andeen, K, Arruda, L, Attig, N, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bigongiari, G, Bindi, V, Bizzaglia, S, Bizzarri, M, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Borsini, S, Boschini, M, Bourquin, M, Burger, J, Cadoux, F, Cai, X, Capell, M, Caroff, S, Carosi, G, Casaus, J, Cascioli, V, Castellini, G, Cernuda, I, Cerreta, D, Cervelli, F, Chae, M, Chang, Y, Chen, A, Chen, H, Cheng, G, Cheng, L, Chikanian, A, Chou, H, Choumilov, E, Choutko, V, Chung, C, Cindolo, F, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Cui, Z, Dai, M, Delgado, C, Della Torre, S, Demirköz, M, Derome, L, Di Falco, S, Di Masso, L, Dimiccoli, F, Díaz, C, von Doetinchem, P, Du, W, Duranti, M, D’Urso, D, Eline, A, Eppling, F, Eronen, T, Fan, Y, Farnesini, L, Feng, J, Fiandrini, E, Fiasson, A, Finch, E, Fisher, P, Galaktionov, Y, Gallucci, G, García, B, García López, R, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Gillard, W, Giovacchini, F, Goglov, P, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guandalini, C, Guerri, I, Guo, K, Haas, D, Habiby, M, Haino, S, Han, K, He, Z, Heil, M, Henning, R, Hoffman, J, Hsieh, T, Huang, Z, Huh, C, Incagli, M, Ionica, M, Jang, W, Jinchi, H, Kanishev, K, Kim, G, Kim, K, Kirn, T, Kossakowski, R, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M, Kunz, S, LA VACCA, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H, Lee, S, Leluc, C, Levi, G, Li, H, Li, J, Li, Q, Li, T, Li, W, Li, Y, Li, Z, Lim, S, Lin, C, Lipari, P, Lippert, T, Liu, D, Liu, H, Lolli, M, Lomtadze, T, Lu, M, Lu, Y, Luebelsmeyer, K, Luo, F, Luo, J, Lv, S, Majka, R, Malinin, A, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Massera, F, Maurin, D, Menchaca Rocha, A, Meng, Q, Mo, D, Monreal, B, Morescalchi, L, Mott, P, Müller, M, Ni, J, Nikonov, N, Nozzoli, F, Nunes, P, Obermeier, A, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Papi, A, Pauluzzi, M, Pedreschi, E, Pensotti, S, Pereira, R, Pilastrini, R, Pilo, F, Piluso, A, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Postaci, E, Putze, A, Quadrani, L, Qi, X, Rancoita, P, Rapin, D, Ricol, J, Rodríguez, I, Rosier Lees, S, Rossi, L, Rozhkov, A, Rozza, D, Rybka, G, Sagdeev, R, Sandweiss, J, Saouter, P, Sbarra, C, Schael, S, Schmidt, S, Schuckardt, D, Schulz von Dratzig, A, Schwering, G, Scolieri, G, Seo, E, Shan, B, Shan, Y, Shi, J, Shi, X, Shi, Y, Siedenburg, T, Son, D, Spada, F, Spinella, F, Sun, W, Tacconi, M, Tang, C, Tang, X, Tang, Z, Tao, L, Tescaro, D, Ting, S, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vaurynovich, S, Vecchi, M, Velasco, M, Vialle, J, Vitale, V, Volpini, G, Wang, L, Wang, Q, Wang, R, Wang, X, Wang, Z, Weng, Z, Whitman, K, Wienkenhöver, J, Wu, H, Wu, K, Xia, X, Xie, M, Xie, S, Xiong, R, Xin, G, Xu, N, Xu, W, Yan, Q, Yang, J, Yang, M, Ye, Q, Yi, H, Yu, Y, Yu, Z, Zeissler, S, Zhang, J, Zhang, M, Zhang, X, Zhang, Z, Zheng, Z, Zhou, F, Zhuang, H, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P, Zurbach, C, L. Accardo, M. Aguilar, D. Aisa, B. Alpat, A. Alvino, G. Ambrosi, K. Andeen, L. Arruda, N. Attig, P. Azzarello, A. Bachlechner, F. Barao, A. Barrau, L. Barrin, A. Bartoloni, L. Basara, M. Battarbee, R. Battiston, J. Bazo, U. Becker, M. Behlmann, B. Beischer, J. Berdugo, B. Bertucci, G. Bigongiari, V. Bindi, S. Bizzaglia, M. Bizzarri, G. Boella, W. d. Boer, K. Bollweg, V. Bonnivard, B. Borgia, S. Borsini, M. J. Boschini, M. Bourquin, J. Burger, F. Cadoux, X. D. Cai, M. Capell, S. Caroff, G. Carosi, J. Casau, V. Cascioli, G. Castellini, I. Cernuda, D. Cerreta, F. Cervelli, M. J. Chae, Y. H. Chang, A. I. Chen, H. Chen, G. M. Cheng, H. S. Chen, L. Cheng, A. Chikanian, H. Y. Chou, E. Choumilov, V. Choutko, C. H. Chung, F. Cindolo, C. Clark, R. Clavero, G. Coignet, C. Consolandi, A. Contin, C. Corti, B. Coste, Z. Cui, M. Dai, C. Delgado, S. D. Torre, M. B. Demirkoz, L. Derome, S. D. Falco, L. D. Masso, F. Dimiccoli, C. Diaz, P. v. Doetinchem, W. J. Du, M. Duranti, D. D'Urso, A. Eline, F. J. Eppling, T. Eronen, Y. Y. Fan, L. Farnesini, J. Feng, E. Fiandrini, A. Fiasson, E. Finch, P. Fisher, Y. Galaktionov, G. Gallucci, B. Garcia, R. Garcia-Lopez, H. Gast, I. Gebauer, M. Gervasi, A. Ghelfi, W. Gillard, F. Giovacchini, P. Goglov, J. Gong, C. Goy, V. Grabski, D. Grandi, M. Graziani, C. Guandalini, I. Guerri, K. H. Guo, D. Haa, M. Habiby, S. Haino, K. C. Han, Z. H. He, M. Heil, R. Henning, J. Hoffman, T. H. Hsieh, Z. C. Huang, C. Huh, M. Incagli, M. Ionica, W. Y. Jang, H. Jinchi, K. Kanishev, G. N. Kim, K. S. Kim, T. Kirn, R. Kossakowski, O. Kounina, A. Kounine, V. Koutsenko, M. S. Krafczyk, S. Kunz, G. L. Vacca, E. Laudi, G. Laurenti, I. Lazzizzera, A. Lebedev, H. T. Lee, S. C. Lee, C. Leluc, G. Levi, H. L. Li, J. Q. Li, Q. Li, T. X. Li, W. Li, Y. Li, Z. H. Li, Z. Y. Li, S. Lim, C. H. Lin, P. Lipari, T. Lippert, D. Liu, H. Liu, M. Lolli, T. Lomtadze, M. J. Lu, Y. S. Lu, K. Luebelsmeyer, F. Luo, J. Z. Luo, S. S. Lv, R. Majka, A. Malinin, C. Mana, J. Marin, T. Martin, G. Martinez, N. Masi, F. Massera, D. Maurin, A. Menchaca-Rocha, Q. Meng, D. C. Mo, B. Monreal, L. Morescalchi, P. Mott, M. Muller, J. Q. Ni, N. Nikonov, F. Nozzoli, P. Nune, A. Obermeier, A. Oliva, M. Orcinha, F. Palmonari, C. Palomare, M. Paniccia, A. Papi, M. Pauluzzi, E. Pedreschi, S. Pensotti, R. Pereira, R. Pilastrini, F. Pilo, A. Piluso, C. Pizzolotto, V. Plyaskin, M. Pohl, V. Poireau, E. Postaci, A. Putze, L. Quadrani, X. M. Qi, P. G. Rancoita, D. Rapin, J. S. Ricol, I. Rodriguez, S. Rosier-Lee, L. Rossi, A. Rozhkov, D. Rozza, G. Rybka, R. Sagdeev, J. Sandwei, P. Saouter, C. Sbarra, S. Schael, S. M. Schmidt, D. Schuckardt, A. S. von, G. Schwering, G. Scolieri, E. S. Seo, B. S. Shan, Y. H. Shan, J. Y. Shi, X. Y. Shi, Y. M. Shi, T. Siedenburg, D. Son, F. Spada, F. Spinella, W. Sun, W. H. Sun, M. Tacconi, C. P. Tang, X. W. Tang, Z. C. Tang, L. Tao, D. Tescaro, S. C. C., S. M. Ting, N. Tomassetti, J. Torsti, C. Turkoglu, T. Urban, V. Vagelli, E. Valente, C. Vannini, E. Valtonen, S. Vaurynovich, M. Vecchi, M. Velasco, J. P. Vialle, V. Vitale, G. Volpini, L. Q. Wang, Q. L. Wang, R. S. Wang, X. Wang, Z. X. Wang, Z. L. Weng, K. Whitman, J. Wienkenhover, H. Wu, K. Y. Wu, X. Xia, M. Xie, S. Xie, R. Q. Xiong, G. M. Xin, N. S. Xu, W. Xu, Q. Yan, J. Yang, M. Yang, Q. H. Ye, H. Yi, Y. J. Yu, Z. Q. Yu, S. Zeissler, J. H. Zhang, M. T. Zhang, X. B. Zhang, Z. Zhang, Z. M. Zheng, F. Zhou, H. L. Zhuang, V. Zhukov, A. Zichichi, N. Zimmermann, P. Zuccon, C. Zurbach, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (INFN, Sezione di Perugia), Istituto Nazionale di Fisica Nucleare (INFN), Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), Institut für Experimentelle Kernphysik [Karlsruhe] (EKP), Karlsruher Institut für Technologie (KIT), Jülich Aachen Research Alliance (JARA), 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), CERN [Genève], Istituto Nazionale di Fisica Nucleare, Sezione di Roma 3 (INFN, Sezione di Roma 3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), University of Turku, Massachusetts Institute of Technology (MIT), INFN Sezione di Pisa (INFN Sezione di Pisa), University of Hawai'i [Honolulu] (UH), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), Karlsruhe Institute of Technology (KIT), NASA Johnson Space Center (JSC), NASA, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Département de Physique Nucléaire et Corpusculaire [Genève] (DPNC), Université de Genève (UNIGE), Istituto Nazionale di Ottica [Firenze] (INO-CNR), Consiglio Nazionale delle Ricerche (CNR), Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), EWHA Womans University (EWHA), National Central University [Taiwan] (NCU), Academia Sinica, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (INFN, Sezione di Bologna), Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), and AMS

Subjects
Astrophysics and Astronomy, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, cosmic rays studies, Cosmic ray, Electron, ddc:500.2, 7. Clean energy, Space mission, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Nuclear physics, Physics and Astronomy (all), FIS/05 - ASTRONOMIA E ASTROFISICA, Positron, International Space Station, Alpha Magnetic Spectrometer, ddc:550, Dark matter, ASTROPARTICLE PHYSICS, AMS, Cosmic rays, Positron fraction, antimatter and dark matter, positrons, Physics, Range (particle radiation), ta115, Magnetic spectrometer, ELECTRONS, Cosmic rays, Positron fraction, International Space Station, FIS/01 - FISICA SPERIMENTALE, Physics::Accelerator Physics, Satellite, High Energy Physics::Experiment, Particle Physics - Experiment, Energy (signal processing)
Abstract

A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200 GeV the positron fraction no longer exhibits an increase with energy.

Published
2016

18. Sampling problems using Mixed Random Modulation Techniques (MRMT) for the reduction of magnetic noise in traction motors

Author

Pompeo Marino, L. Accardo, G. Giannini, M. Fioretto, Accardo, L, Fioretto, M, Giannini, G, and Marino, Pompeo

Subjects
Reduction (complexity), Noise, Engineering, Modulation, business.industry, Control theory, Noise reduction, Electronic engineering, Inverter, business, Induction motor, Space vector modulation, Traction motor
Abstract

In order to reduce magnetic-acoustic noise emitted by asynchronous traction motors fed by inverter, a new kind of space vector modulation techniques have been developed. By using these, called mixed random modulation techniques (MRMT), a better ldquosound qualityrdquo of emitted noise is reached. They act modifying both SVM pulse position and SVM switching frequency. This action prevents the right sampling of motor currents, used by control algorithms. Basically the problem is due to the assumption that SVM pulse is centered into the switching period. This is wrong using MRMT. Through simulation, three strategies have been implemented. The chosen strategy has been tested together with the complete propulsion system of AnsaldoBreda tram Sirio.

Published
2008

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