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1. Very High Energy Gamma Ray Astronomy and Cosmic Ray Physics with the ARGO-YBJ experiment

Author

C. Baccia, K. Z. Baob, F. Baronec, B. Bartolic, P. Bernardinid, S. Bussinoa, E. Callonic, B. Y. Caoe, R. Cardarellif, S. Catalanottic, S. Cavalierec, F. Cesaronid, P. Cretid, Danzengluobug, B. D’Ettorre Piazzolic, M. De Vincenzia, T. Di Girolamoc, G. Di Sciascioc, Z. Y. Fengh, Y. Fue, X. Y. Gaoi, Q. X. Gengi, H. W. Guog, H. H. Hej, M. Hee, Q. Huangh, M. Iacovaccic, N. Iuccia, H. Y. Jaih, C. L. Jingj, F. M. Konge, H. H. Kuangj, Labacireng, B. Lib, J. Y. Lie, Z. Q. Liui, H. Luj, X. H. Maj, G. Mancarellad, MARI, Stefano Maria, a, G. Marsellad, D. Martellod, X. R. Mengg, L. Milanoc, J. Mui, M. Panareod, Z. R. Pengj, P. Pistillia, L. Saggesec, R. Santonicof, P. R. Shenj, C. Stanescua, L. R. Sunb, S. C. Sunb, A. Surdod, Y. H. Tanj, S. Vernettok, C. R. Wange, H. Wangj, H. Y. Wangj, Y. N. Weib, H. T. Yangj, Q. K. Yaob, G. C. Yuh, X. D. Yueb, A. F. Yuang, M. Zhaj, H. M. Zhangj, J. L. Zhangj, N. J. Zhange, X. Y. Zhange, Zhaxisangzhug, Zhaxicireng, Q. Q. Zhuj, C., Baccia, K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorre Piazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, Mari, Stefano Maria, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, and Q. Q., Zhuj

Subjects
Gamma Ray Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Argo-Ybj
Abstract

Gamma ray astronomy at energies 1011 1013 eV, which are strictly related to the identication and study of the cosmic ray acceleration sites, is the main scientic goal of the ARGO-YBJ experiment. The detector, which is now being assembled in Tibet (China) at 4300 m a.s.l., is a full coverage Extensive Air Shower array consisting of a carpet of Resistive Plate Chambers covering a surface of about 7000 m2. The high altitude ( atmospheric depth 600 g/cm2 ) and the full coverage ensure a very low primary photon energy threshold at few hundreds GeV (close to the limits of the satellite technology), while the detector time resolution st 1ns gives a good pointing accuracy, thus allowing a high sensitivity to g -ray sources. Moreover the large eld of view and the high duty-cycle ensure the continuous monitoring of the sky in the declination band 20 d 80 . The detector layout, performance and location, offer a unique possibility to make also a deep study of several characteristics of the hadronic component of the cosmic ray ux up to energies of hundreds of TeV. In particular, the structure of the shower core, the lateral distribution, the energy spectra and the angular (e.g. anisotropies) and time (e.g. solar ares) ux modulations can be measured with high sensitivity. Moreover, the use of a full coverage detector with a high space granularity gives detailed images of the shower front, that can be used to test different hypotheses on the cosmic ray interactions, the shower development in the atmosphere and particle physics at very high energies. In this work the general layout of the detector and its performance will be described, together with some of the rst results coming from the data analysis of a relevant fraction of the apparatus that is already operating.

Published
2006

2. Multiscale image analysis applied to gamma/h discrimination for VHE gamma-astronomy with ARGO-YBJ

Author

The ARGO YBJ Collaboration C. Baccia, K. Z. Baob, F. Baronec, B. Bartolic, P. Bernardinid, S. Bussinoa, E. Callonic, B. Y. Caoe, R. Cardarellif, S. Catalanottic, S. Cavalierec, F. Cesaronid, P. Cretid, Danzengluobug, B. D’Ettorre Piazzolic, M. De Vincenzia, T. Di Girolamoc, G. Di Sciascioc, Z. Y. Fengh, Y. Fue, X. Y. Gaoi, Q. X. Gengi, H. W. Guog, H. H. Hej, M. Hee, Q. Huangh, M. Iacovaccic, N. Iuccia, H. Y. Jaih, C. L. Jingj, F. M. Konge, H. H. Kuangj, Labacireng, B. Lib, J. Y. Lie, Z. Q. Liui, H. Luj, X. H. Maj, G. Mancarellad, a, G. Marsellad, D. Martellod, X. R. Mengg, L. Milanoc, J. Mui, M. Panareod, Z. R. Pengj, P. Pistillia, L. Saggesec, R. Santonicof, P. R. Shenj, C. Stanescua, L. R. Sunb, S. C. Sunb, A. Surdod, Y. H. Tanj, S. Vernettok, C. R. Wange, H. Wangj, H. Y. Wangj, Y. N. Weib, H. T. Yangj, Q. K. Yaob, G. C. Yuh, X. D. Yueb, A. F. Yuang, M. Zhaj, H. M. Zhangj, J. L. Zhangj, N. J. Zhange, X. Y. Zhange, Zhaxisangzhug, Zhaxicireng, Q. Q. Zhuj, MARI, Stefano Maria, The ARGO YBJ Collaboration C., Baccia, K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorre Piazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, Mari, Stefano Maria, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, and Q. Q., Zhuj

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, High Energy Physics::Experiment, Physics::Atmospheric and Oceanic Physics
Abstract

Intrinsic differences in processes involved in the electromagnetic and hadronic shower development in the atmosphere have been avidenced by means of a careful analysis of the event image given by ARGO-YBJ detector.

Published
2004

3. First results on the angular resolution of the ARGO-YBJ detector

Author

G. Aielli, C. Bacci, F. Barone, B. Bartoli, X. J. Bi, C. Bleve, P. Branchini, A. Budano, S. Bussino, A. K. Calabrese Melcarne, P. Camarri, Z. Cao, A. Cappa, R. Cardarelli, S. Catalanotti, C. Cattaneo, S. Cavaliere, P. Celio, S. Z. Chen, N. Cheng, P. Creti, S. W. Cui, G. Cusumano, B. Z. Dai, G. D’Alí Staiti, Danzengluobu, M. Dattoli, R. De Rosa, B. D’Ettorre Piazzoli, M. De Vincenzi, T. Di Girolamo, X. H. Ding, G. Di Sciascio, C. F. Feng, Zhaoyang Feng, Zhenyong Feng, C. Ferrigno, F. Galeazzi, P. Galeotti, X. Y. Gao, R. Gargana, F. Garufi, Q. B. Gou, H. H. He, Haibing Hu, Hongbo Hu, Q. Huang, M. Iacovacci, I. James, H. Y. Jia, Labaciren, H. J. Li, J. Y. Li, B. Liberti, G. Liguori, C. Q. Liu, J. Liu, H. Lu, S. M. Mari, S. Mastroianni, X. R. Meng, J. Mu, L. Nicastro, C. C. Ning, L. Palummo, P. Pistilli, X. B. Qu, E. Rossi, F. Ruggieri, L. Saggese, P. Salvini, R. Santonico, A. Segreto, P. R. Shen, X. D. Sheng, F. Shi, C. Stanescu, A. Surdo, Y. H. Tan, P. Vallania, S. Vernetto, C. Vigorito, H. Wang, Y. G. Wang, C. Y. Wu, H. R. Wu, B. Xu, L. Xue, H. T. Yang, Q. Y. Yang, X. C. Yang, G. C. Yu, A. F. Yuan, M. Zha, H. M. Zhang, J. L. Zhang, L. Zhang, P. Zhang, X. Y. Zhang, Y. Zhang, Zhaxisangzhu, X. X. Zhou, F. R. Zhu, Q. Q. Zhu, BERNARDINI, Paolo, DE MITRI, Ivan, MANCARELLA, Giovanni, MARSELLA, GIOVANNI, MARTELLO, Daniele, PANAREO, Marco, PERRONE, Lorenzo, C., Baccia, K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorrepiazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, Mari, Stefano Maria, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, Q. Q., Zhuj, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., G., Aielli, C., Bacci, F., Barone, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, S., Cavaliere, P., Celio, S. Z., Chen, N., Cheng, P., Creti, S. W., Cui, G., Cusumano, B. Z., Dai, G., D’Alí Staiti, M., Dattoli, DE MITRI, Ivan, R., De Rosa, B., D’Ettorre Piazzoli, M., De Vincenzi, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, C., Ferrigno, F., Galeazzi, P., Galeotti, X. Y., Gao, R., Gargana, F., Garufi, Q. B., Gou, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, B., Liberti, G., Liguori, C. Q., Liu, J., Liu, H., Lu, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, J., Mu, L., Nicastro, C. C., Ning, L., Palummo, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, A., Segreto, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, H., Wang, Y. G., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, H. T., Yang, Q. Y., Yang, X. C., Yang, G. C., Yu, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhou, F. R., Zhu, and Q. Q., Zhu

Subjects
History, Geography, Extended Air shower, Detector, Air shower array, Angular resolution, Cosmic Ray, Extensive Air Shower, Array Detector, Angular Resolution, Cartography, Argo, Computer Science Applications, Education, Remote sensing, Argo-Ybj
Abstract

We present the first results on the angular resolution of the ARGO-YBJ detector in data taking at the Yangbajing Laboratory (Tibet, People's Republic of China, 4300 m a.s.l.).

Published
2006

4. Searching for emission from gamma-ray bursts with the ARGO-YBJ detector

Author

Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., C., Baccia, K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorre Piazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, and Q. Q., Zhuj

Subjects
Physics, History, Gamma ray burst, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, Effects of high altitude on humans, Coincidence, Computer Science Applications, Education, Argo-Ybj, Air shower, Extensive Air shower, Satellite, Gamma-ray burst, Argo, Energy (signal processing), Physics::Atmospheric and Oceanic Physics
Abstract

The ARGO-YBJ experiment has been designed to decrease the energy threshold of typical Extensive Air Shower arrays by exploiting the high altitude location (Tibet, People's Republic of China, 4300 m a.s.l.) and the full coverage. The lower energy limit of the detector (a few GeV) is reached with the single particle technique, recording the counting rate at fixed time intervals. We present first results concerning the search for emission from Gamma-Ray Bursts in coincidence with satellite detections

Published
2006

5. Status of the ARGO-YBJ experiment

Author

Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., C., Baccia, K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorre Piazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, Mari, Stefano Maria, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, Q. Q., Zhuj, Aharonian, FA, Volk, HJ, Horns, D, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.

Subjects
Physics, Resistive touchscreen, Detector, Cosmic ray, Extensive Air Shower, Astrophysics, Full coverage, Cosmic Ray, Argo-Ybj, Gamma detection, Single layer, Argo, Remote sensing, Gamma ray detection
Abstract

The ARGO‐YBJ experiment, under construction at the Yangbaijing Laboratory (P.R. China, 4300 m a.s.l.), is a full coverage detector of dimension 74 × 78 m2 made by a single layer of Resistive Plate Counters. About 10% of the final active area (∼ 700 m2) is in stable operation to check the detector performance and the reconstruction algorithms. In this paper the status of the experiment and the analysis of the first data are presented.

Published
2005

6. Sensitivity of ARGO-YBJ to different composition models in the energy range 10 ÷ 500 TeV

Author

C. BACCI, K. Z. BAO, F. BARONE, B. BARTOLI, S. BUSSINO, E. CALLONI, B. Y. CAO, R. CARDARELLI, S. CATALANOTTI, S. CAVALIERE, F. CESARONI, P. CRETI, DANZENGLUOBU, B. D'ETTORRE PIAZZOLI, M. DE VINCENZI, T. DI GIROLAMO, G. DI SCIASCIO, Z. Y. FENG, Y. FU, X. Y. GAO, Q. X. GENG, H. W. GUO, H. H. HE, M. HE, Q. HUANG, M. IACOVACCI, N. IUCCI, H. Y. JAI, C. L. JING, F. M. KONG, H. H. KUANG, LABACIREN, B. LI, J. Y. LI, Z. Q. LIU, H. LU, X. H. MA, S. M. MARI, X. R. MENG, L. MILANO, J. MU, Z. R. PENG, P. PISTILLI, L. SAGGESE, R. SANTONICO, P. R. SHEN, C. STANESCU, L. R. SUN, S. C. SUN, A. SURDO, Y. H. TAN, S. VERNETTO, C. R. WANG, H. WANG, H. Y. WANG, Y. N. WEI, H. T. YANG, Q. K. YAO, G. C. YU, X. D. YUE, A. F. YUAN, M. ZHA, H. M. ZHANG, J. L. ZHANG, N. J. ZHANG, X. Y. ZHANG, ZHAXISANGZHU, ZHAXICIREN, Q. Q. ZHU, BERNARDINI, Paolo, DE MITRI, Ivan, MANCARELLA, Giovanni, MARSELLA, GIOVANNI, MARTELLO, Daniele, PANAREO, Marco, C., Bacci, K. Z., Bao, F., Barone, B., Bartoli, Bernardini, Paolo, S., Bussino, E., Calloni, B. Y., Cao, R., Cardarelli, S., Catalanotti, S., Cavaliere, F., Cesaroni, P., Creti, Danzengluobu, B., D'ETTORRE PIAZZOLI, DE MITRI, Ivan, M., DE VINCENZI, T., DI GIROLAMO, G., DI SCIASCIO, Z. Y., Feng, Y., Fu, X. Y., Gao, Q. X., Geng, H. W., Guo, H. H., He, M., He, Q., Huang, M., Iacovacci, N., Iucci, H. Y., Jai, C. L., Jing, F. M., Kong, H. H., Kuang, Labaciren, B., Li, J. Y., Li, Z. Q., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, X. R., Meng, L., Milano, J., Mu, Panareo, Marco, Z. R., Peng, P., Pistilli, L., Saggese, R., Santonico, P. R., Shen, C., Stanescu, L. R., Sun, S. C., Sun, A., Surdo, Y. H., Tan, S., Vernetto, C. R., Wang, H., Wang, H. Y., Wang, Y. N., Wei, H. T., Yang, Q. K., Yao, G. C., Yu, X. D., Yue, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, N. J., Zhang, X. Y., Zhang, Zhaxisangzhu, Zhaxiciren, Q. Q., Zhu, Baccia, The ARGO YBJ C. o. l. l. a. b. o. r. a. t. i. o. n. C., K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorrepiazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, Mari, Stefano Maria, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, and Q. Q., Zhuj

Subjects
Physics, Nuclear and High Energy Physics, Resistive touchscreen, Range (particle radiation), ARGO-YBJ, Detector, Cosmic ray, STRIPS, Cosmic Ray, Atomic and Molecular Physics, and Optics, Charged particle, law.invention, Nuclear physics, law, Shower detectors, Cosmic Ray, Resistive Plate Counters, Composition Model, Extensive Air Showers, Energy (signal processing), Argo
Abstract

The ARGO-YBJ experiment is currently under construction at the Yangbajing Cosmic Ray Laboratory (4300 m a.s.l.).The detector consists of a central carpet, 74 × 78 m2, made of a single layer of Resistive Plate Counters (RPCs), and surrounded by a partially instrumented guard ring for a total instrumented area of about 6700 m2. The digital read-out, performed by means of pick-up electrodes 6.7 × 62 cm2 (strip), allows to measure the charged particle number of small size air showers. The technique of counting the number of fired strips on the ARGO carpet corresponds to operate in the 10÷500 TeV energy region where both direct and indirect measurements on the primary cosmic radiation have been performed. Many composition models have been proposed by different experiments. In this work we discuss the ability of the ARGO detector to discriminate among some models.

Published
2004

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