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18 results on '"L.V. Reddy"'

1. Highlights from the GRAPES-3 experiment

Author

Pravata Mohanty, S. Ahmad, M. Chakraborty, A. Chandra, S.R Dugad, U.D Goswami, S.K Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, Y. Muraki, P.K Nayak, T. Nonaka, A. Oshima, B.P Pant, D. Pattanaik, G.S Pradhan, P.S Rakshe, M. Rameez, K. Ramesh, L.V Reddy, R. Sahoo, R. Scaria, S. Shibata, J. Soni, K. Tanaka, F. Varsid, and M. Zuberia

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Cosmic ray, Scintillator, GRAPES-3, law.invention, Nuclear physics, Telescope, Air shower, law, High Energy Physics::Experiment, Angular resolution
Abstract

The GRAPES-3 is a near-equatorial extensive air shower experiment, located in Ooty, India at an altitude of 2200 m above mean sea level. It consists of a dense array of 400 scintillator detectors of 1 m$^{2}$ area each with 8 m inter separation. The array triggers showers induced by cosmic ray and gamma ray primaries in the TeV-PeV energy range. An associated muon telescope of 560 m$^2$ area is designed to record muons above 1 GeV energy in the triggered showers. Additionally, it is designed to trigger on individual muons, providing measurement of muon flux with a statistics of $\sim$4$\times$10$^{9}$ muons per day and an average angular resolution of 4$^{\circ}$. In this paper, we summarize the recent results obtained using air shower data on cosmic ray energy spectrum and composition below the Knee, cosmic ray anisotropy, angular resolution, gamma ray source searches and thunderstorm phenomena using the muon flux data.

Published
2021
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2. Cosmic ray energy spectrum and composition measurements from the GRAPES-3 experiment: Latest results

Author

K. Ramesh, P. Jagadeesan, P.S. Rakshe, S. Mahapatra, Yasushi Muraki, M. Zuberi, J. Soni, Y. Hayashi, Pankaj Jain, D. Pattanaik, Umananda Dev Goswami, F. Varsi, S. Kawakami, R. Sahoo, M. Rameez, A. Jain, Toshiyuki Nonaka, Anuj Chandra, Shoichi Shibata, Balakrishnan Hariharan, Shafiq Ahmad, B.P. Pant, P. K. Mohanty, R. Moharana, L.V. Reddy, R. Scaria, S. R. Dugad, M. Chakraborty, Akitoshi Oshima, K. Tanaka, S.K. Gupta, G.S. Pradhan, Hiroshi Kojima, and Prakash Kumar Nayak

Subjects
Physics, Muon, Proton, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Gamma-ray astronomy, GRAPES-3, law.invention, Telescope, Nuclear physics, Air shower, Distribution function, law, High Energy Physics::Experiment
Abstract

The Gamma Ray Astronomy at PeV EnergieS phase-3 (GRAPES-3) experiment is located at Ooty in India (11.4$^{\circ}$ N, 76.7$^{\circ}$ E and 2200 m above m.s.l.). It consists of a densely packed array of 400 plastic scintillator detectors and a large area muon telescope (560 m$^{2}$). It measures cosmic rays from several TeV to over 10 PeV energies providing a substantial overlap with direct experiments while covering the knee region. Shower parameters are reconstructed by fitting the observed particle densities with the NKG lateral distribution function (LDF). For this analysis, the QGSJET-II-04 hadronic interaction model is used to generate the air shower simulation data for proton, helium, nitrogen, aluminium, and iron primaries. Precise measurements of the average nuclear composition are obtained by fitting muon multiplicity distributions (MMDs) for all simulated primaries with the MMDs measured by the muon telescope. Details of the analysis and preliminary results for the extracted composition and elemental energy spectrum for proton and helium from a few tens of TeV to a few PeV will be presented.

Published
2021
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3. The azimuthal distribution of thunderstorm events recorded by the GRAPES-3 experiment

Author

B.P. Pant, Yasushi Muraki, M. Rameez, Akitoshi Oshima, F. Varsi, Y. Hayashi, Balakrishnan Hariharan, Umananda Dev Goswami, S. R. Dugad, D. Pattanaik, G.S. Pradhan, M. Chakraborty, R. Moharana, P. K. Mohanty, Anuj Chandra, L.V. Reddy, Hiroshi Kojima, Pankaj Jain, Prakash Kumar Nayak, Toshiyuki Nonaka, J. Soni, K. Tanaka, A. Jain, Shoichi Shibata, R. Sahoo, M. Zuberi, R. Scaria, P.S. Rakshe, K. Ramesh, P. Jagadeesan, S. Mahapatra, S.K. Gupta, S. Kawakami, and Shafiq Ahmad

Subjects
Azimuth, Nuclear physics, Physics, Depth sounding, business.product_category, Muon, Rocket, Monte Carlo method, Thunderstorm, Electric potential, business, GRAPES-3, Physics::Geophysics
Abstract

The GRAPES-3 experiment reported the measurement of 1.3 GV potential across one of the massive thunderclouds recorded on 1 December 2014 by making use of the muon imaging technique. This measurement is ten times larger than the maximum potential reported previously by balloon and rocket sounding measurements, verifying the almost a century old prediction by C.T.R. Wilson. These measurements rely on the precise estimate of the change in the angular muon flux caused by the acceleration of muons during their passage through the charged layers of thunderstorms. The electric potential is estimated with the help of Monte Carlo simulations by using CORSIKA and other in-house tools. A study of the thunderstorms events recorded since April 2011 displays an asymmetry in their azimuthal distribution which can be understood to be caused by the ratio of $\mu^+$/$\mu^-$.

Published
2021
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4. An Advanced Triggerless Data Acquisition System for GRAPES-3 Muon Detector

Author

F. Varsi, Yasushi Muraki, S. Mahapatra, G.S. Pradhan, J. Soni, K. Manjunath, Hiroshi Kojima, V. Lindenstruth, Umananda Dev Goswami, P. K. Mohanty, Prakash Kumar Nayak, P. K. Jain, Anuj Chandra, D. Pattanaik, R. Sahoo, S. R. Dugad, S. Kawakami, Balakrishnan Hariharan, K. Ramesh, Y. Hayashi, Akitoshi Oshima, M. Chakraborty, R. Moharana, L.V. Reddy, R. Sureshkumar, S. K. Gupta, Shafiq Ahmad, R. Scaria, M. Zuberi, Shoichi Shibata, P.S. Rakshe, K. Tanaka, T. Alt, P. Jagadeesan, Jain Ak, Toshiyuki Nonaka, M.S. Shareef, B.P. Pant, and M. Rameez

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Flux, Cosmic ray, Gamma-ray astronomy, GRAPES-3, law.invention, Nuclear physics, Telescope, Data acquisition, law, Transient (oscillation)
Abstract

The large area 560\,m$^2$ directional muon telescope at Gamma Ray Astronomy at PeV Energies phase -3 (GRAPES-3) experiment in Ooty, India was designed primarily to study the extensive air showers (EAS) and made operational in year 1998. It has turned out to be an unique instrument to make fascinating study of exotic phenomenon by introduction of a new parallel data acquisition system (DAQ) in year 2000 to measure the muon directional flux. The recent discoveries of transient weakening of Earth’s magnetic shield probed by a Cosmic Ray Burst and measurement of the electrical properties of a thundercloud through muon imaging has demonstrated the capabilities of this instrument. The design of new triggerless muon data acquisition system (TM-DAQ) using Field-programmable gate array (FPGA) would enhance the present capabilities and open a new window on several physics fronts such as, a) precise measurement of the muon flux for thunderstorm studies, b) study of large angle EAS using the muon component, c) search for exotic particles characterized by early or delayed arrivals. We present here the key salient features of the TM-DAQ along with initial observations.

Published
2021
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5. Measurement of large angle muon flux in GRAPES-3 experiment using triggerless DAQ system

Author

D. Pattanaik, Umananda Dev Goswami, Shafiq Ahmad, R. Moharana, R. Sureshkumar, K. Ramesh, M. Rameez, Hiroshi Kojima, P. K. Mohanty, R. Sahoo, J. Soni, Prakash Kumar Nayak, K. Manjunath, S. Kawakami, V. Lindenstruth, S.K. Gupta, G.S. Pradhan, P.S. Rakshe, Pankaj Jain, A. Jain, S. Mahapatra, Balakrishnan Hariharan, T. Alt, R. Scaria, Shoichi Shibata, S. R. Dugad, K. Tanaka, P. Jagadeesan, Akitoshi Oshima, M. Chakraborty, L.V. Reddy, Anuj Chandra, Yasushi Muraki, M. Zuberi, M.S. Shareef, B.P. Pant, Toshiyuki Nonaka, Y. Hayashi, and F. Varsi

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, business.industry, Process (computing), Flux, GRAPES-3, law.invention, Nuclear physics, Telescope, Software, Data acquisition, law, High Energy Physics::Experiment, business, Zenith
Abstract

The large area muon telescope of GRAPES-3 has been operating continuously for more than two decades with a DAQ which has several limitations. At present, this DAQ is in the process of being upgraded with a FPGA based system. The new DAQ system is designed to be triggerless and capable of recording every hit from the 3712 proportional counters along with a time-stamp (10 ns accuracy) which has significantly expanded the physics horizon of the experiment. This triggerless feature allows the detection of muons beyond the nominal zenith range of the current system ($\theta$$

Published
2021
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6. Energy sensitivity of the GRAPES-3 EAS array for primary cosmic ray protons

Author

P. Jagadeesan, Pankaj Jain, F. Varsi, D. Pattanaik, V.B. Jhansi, S. K. Gupta, Pranaba K. Nayak, Shoichi Shibata, L.V. Reddy, H. Kojima, Shama Ahmad, S.S.R. Inbanathan, A. Oshima, S. R. Dugad, B. S. Rao, M. Chakraborty, S. Kawakami, Y. Hayashi, P. K. Mohanty, P.S. Rakshe, Balakrishnan Hariharan, A. Chandra, S. D. Morris, K. Ramesh, Atul Jain, and M. Zuberi

Subjects
Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Range (particle radiation), Primary energy, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, 01 natural sciences, GRAPES-3, Nuclear physics, Air shower, Orders of magnitude (time), Space and Planetary Science, 0103 physical sciences, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Energy (signal processing)
Abstract

Low energy ground-based cosmic ray air shower experiments generally have energy threshold in the range of a few tens to a few hundreds of TeV. The shower observables are measured indirectly with an array of detectors. The atmospheric absorption of low energy secondaries limits their detection frequencies at the Earth's surface. However, due to selection effects, a tiny fraction of low energy showers, which are produced in the lower atmosphere can reach the observational level. But, due to less information of shower observables, the reconstruction of these showers are arduous. Hence, it is believed that direct measurements by experiments aboard on satellites and balloon flights are more reliable at low energies. Despite having very small efficiency ($\sim$0.1%) at low energies, the large acceptance ($\sim$5 m$^2$sr) of GRAPES-3 experiment allows observing primary cosmic rays down below to $\sim$1 TeV and opens up the possibility to measure primary energy spectrum spanning from a few TeV to beyond cosmic ray knee (up to 10$^{16}$ eV), covering five orders of magnitude. The GRAPES-3 energy threshold for primary protons through Monte Carlo simulations are calculated, which gives reasonably good agreement with data. Furthermore, the total efficiencies and acceptance are also calculated for protons primaries. The ability of GRAPES-3 experiment to cover such a broader energy range may provide a unique handle to bridge the energy spectrum between direct measurements at low energies and indirect measurements at ultra-high energies., 15 pages, 6 figures

Published
2020

7. Dependence of the muon intensity on the atmospheric temperature measured by the GRAPES-3 experiment

Author

Akitoshi Oshima, K. P. Arunbabu, Kiyoshi Tanaka, Hiroshi Kojima, P. K. Mohanty, V.B. Jhansi, Balakrishnan Hariharan, A. Chandra, L.V. Reddy, Y. Hayashi, Pranaba K. Nayak, M. Zuberi, S. Kawakami, S. K. Gupta, Shafiq Ahmad, S. R. Dugad, S. D. Morris, B. S. Rao, Atul Jain, Shoichi Shibata, and P. Jagadeesan

Subjects
Physics, Muon, 010308 nuclear & particles physics, Attenuation length, Astronomy and Astrophysics, Cosmic ray, Atmospheric temperature, 01 natural sciences, GRAPES-3, Intensity (physics), Nuclear physics, Amplitude, 0103 physical sciences, High Energy Physics::Experiment, 010303 astronomy & astrophysics, Temperature coefficient
Abstract

The large area (560 m 2 ) GRAPES-3 tracking muon telescope has been operating uninterruptedly at Ooty, India since 2001. Every day, it records 4 × 10 9 muons of ≥ 1 GeV with an angular resolution of ∼ 4°. The variation of atmospheric temperature affects the rate of decay of muons produced by the galactic cosmic rays (GCRs), which in turn modulates the muon intensity. By analyzing the GRAPES-3 data of six years (2005–2010), a small (amplitude ∼ 0.2%) seasonal variation (1 year (Yr) period) in the intensity of muons could be measured. The effective temperature ‘T eff ’ of the upper atmosphere also displays a periodic variation with an amplitude of ∼ 1 K which was responsible for the observed seasonal variation in the muon intensity. At GeV energies, the muons detected by the GRAPES-3 are expected to be anti-correlated with T eff . The anti-correlation between the seasonal variation of T eff , and the muon intensity was used to measure the temperature coefficient α T by fast Fourier transform (FFT) technique. The magnitude of α T was found to scale with the assumed attenuation length ‘ λ ’ of the hadrons in the range λ = 80–180 g cm − 2 . However, the magnitude of the correction in the muon intensity was found to be almost independent of the value of λ used. For λ = 120 g cm − 2 the value of temperature coefficient α T was found to be ( − 0.17 ± 0.02 )% K − 1 .

Published
2017
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8. The upgraded DO detector

Author

Vipin Bhatnagar, E. De La Cruz-Burelo, Laurent Chevalier, N. A. Kuchinsky, L. S. Vertogradov, Stephen Wimpenny, A. Bross, Y. Jacquier, Adam L. Lyon, Tiefu Zhao, N. Lahrichi, X. Zhang, T. Wlodek, B. Baumbaugh, Martin Grunewald, K. Genser, Ulrike Blumenschein, P. L.M. Podesta-Lerma, T. Marshall, Milos Lokajicek, Jean-Laurent Agram, Christian Autermann, A. Kostritski, Y. Arnoud, S. Lager, O. Dvornikov, M. Anastasoaie, U. Bassler, P. K. Mal, Darien Wood, Brad Abbott, Pierre Petroff, Sergey Denisov, D. Tompkins, P. Sheahan, S. E.K. Mattingly, M. Markus, V. Mikhailov, Chris Hays, K. J. Rani, A. Alton, V. V. Shary, L.V. Reddy, Vivek Jain, S. J. Hong, Paul Telford, Robert Hirosky, V. L. Malyshev, J. Rha, Alexander Khanov, F. Fleuret, Daniel R Claes, Yann Coadou, Nicholas John Hadley, C. P. Buszello, W. Kahl, S. Robinson, I. Churin, Regina Demina, R. Van Kooten, N. Jouravlev, Arnulf Quadt, Raimund Ströhmer, Michael A. Strauss, Michael Martens, R. Jayanti, B. Thooris, Marco Verzocchi, C. Magass, A. Besson, M. D. Corcoran, N. P. Kravchuk, V. A. Bezzubov, Elemer Nagy, G. Graham, Abdenour Lounis, A. Zieminski, Dugan O'Neil, E. G. Zverev, Joshua Thompson, R.J. Yarema, Arnaud Duperrin, H. S. Mao, V. Simak, Ted Zmuda, S. Blessing, Scott Snyder, V. S. Narasimhan, M. Abolins, J. P. Negret, D. Casey, E. Thomas, J. Huang, M. Vigneault, P. A. Rapidis, J. Lizarazo, A. M. Kalinin, V. M. Korablev, N. Spartana, Thomas Trefzger, E. J. Ramberg, S. N. Fatakia, Jaebeom Park, R. A. Sidwell, Suyong Choi, Rapson Gomez, A. Patwa, P. Padley, Denis Gelé, J. F. Bartlett, T. Moulik, R. P. Smith, Sophie Trincaz-Duvoid, M. Juarez, F. Borcherding, W. Pritchard, V. M. Podstavkov, Armen Vartapetian, R. J. Madaras, N. M. Cason, A. Goussiou, J. Steinberg, N. Gollub, R. F. Rodrigues, P. Lebrun, E. Machado, E. Hazen, R. Angstadt, D. Graham, S. N. Ahmed, B. Clement, Mitchell Wayne, D. Bonifas, Alberto Santoro, Yu. A. Gornushkin, David Colling, N. W. Reay, C. Rotolo, Christos Leonidopoulos, D. Beutel, J. Kasper, G. Sajot, J. Kozminski, Michael Shupe, Michael Hildreth, Dmitri Tsybychev, R. L. McCarthy, B. M. Sabirov, Y. Hu, C. Boswell, L. Lobo, Sascha Caron, H. Schellman, J. M. Kohli, R. DeMaat, G. Alkhazov, O. Boeriu, Marcia Begalli, J. G.R. Lima, Lorenzo Feligioni, Y. Kulik, L. Bagby, A. Yurkewicz, D. Kau, Kevin Black, Jovan Mitrevski, D. Toback, G. D. Alexeev, G. Martin-Chassard, A. Harel, Markus Klute, Sergio F Novaes, Norbert Wermes, K. Stevenson, Chris P. Barnes, B. Lavigne, Flera Rizatdinova, Ron Lipton, B. Olivier, S. Greder, Miguel Mostafa, Douglas Smith, Meenakshi Narain, Sherry Towers, Sarah Catherine Eno, Horst Severini, Ph Gris, A. Kryemadhi, Karel Smolek, J. P. Konrath, P. Schieferdecker, D. K. Cho, A. Stone, Wendy W. Davis, R. Zitoun, V. I. Rud, S. Söldner-Rembold, S. R. Hou, Alexandre Zabi, S. Uzunyan, Tobias Golling, Yonggang Huang, J. M. Hauptman, T. Scanlon, S. Kermiche, H. T. Diehl, T. A. Bolton, P. Verdier, Shuichi Kunori, Y. Pogorelov, J. Krane, P. Houben, R. Flores, K. M. Chan, Christian Zeitnitz, Cecilia Elena Gerber, Dhiman Chakraborty, V. Anosov, M. Roco, J. Womersley, Hyun-Chul Kim, John Parsons, Yurii Maravin, Junjie Zhu, F. Nang, Andrew White, R. Rechenmacher, Nikola Makovec, Mossadek Talby, B. Gómez, Yi Jiang, Suman Bala Beri, P. Laurens, M. Michaut, Gordon Watts, A. V. Kotwal, Harrison Prosper, Y. Xie, G. Ginther, D. Butler, J. Linnemann, Vivian O'Dell, H. Weerts, H. Dong, P. Ermolov, María Teresa Martín, M. Cooke, H. da Motta, D. Zieminska, M. Diesburg, D. Gillberg, A. A. Shishkin, A. Evdokimov, S. Desai, S. Grünendahl, J. Wittlin, Kristian Harder, V. Sirotenko, A. C. Le Bihan, Rupert Leitner, S. Fuess, M. Cristetiu, B. Davies, M. Wobisch, O. V. Eroshin, Y. Song, Md. Naimuddin, E. Chi, S.D. Kalmani, Shashikant Dugad, M. Merkin, Jianming Qian, J. Ellison, A. Juste, A. Melnitchouk, Steve Reucroft, Pm Tuts, P. Bonamy, Todd Adams, B. Gobbi, C. Tolian, M. Petteni, J. D. Degenhardt, S. W. Youn, E. Von Toerne, Wagner Carvalho, P. Demine, M.A. Baturitsky, J. M. Heinmiller, Hal Evans, Thomas Ferbel, A. K.A. Maciel, M. Ahsan, Sa. Jain, Dan Green, Emmanuel Busato, Alexander Leflat, V. M. Abazov, J. Raskowski, F. Touze, Nikos Varelas, L. Groer, A. M. Magnan, Thomas G Trippe, Karl Jakobs, A. Pompoš, T. Gadfort, A. S. Turcot, Phillip Gutierrez, Greg Landsberg, Sw. Banerjee, V. Hynek, Mark Raymond Adams, D. Karmanov, Q. Xu, T. Wijnen, M. Strovink, B. Connolly, L. Christofek, H. Zheng, D. Buchholz, Bing Zhou, Luis Mendoza, Lars Sonnenschein, G. Briskin, R. Hooper, D. Mendoza, T. Kurca, Pushpalatha C Bhat, S. Zviagintsev, A. Narayanan, M. B. Przybycien, Anurag Gupta, J. Lazoflores, A. Jonckheere, Marc Weber, S. Porokhovoy, P. Hanlet, Pedrame Bargassa, M. Utes, Pierre-Antoine Delsart, A. Jenkins, Helena Malbouisson, D. Chapin, Christophe Royon, Iain Alexander Bertram, V. V. Lipaev, K. Soustruznik, Kenneth Johns, M. Kopal, R. Chiche, Sudhir Malik, N. J. Buchanan, I. Ripp-Baudot, A. Meyer, P. Nagaraj, Jonas Strandberg, N. Parua, Ia Iashvili, J. Krider, R. K. Shivpuri, D. A. Stoyanova, K. Gounder, J. R. Kalk, Reiner Hauser, V. Buescher, Andrei Nomerotski, Michael Rijssenbeek, O. Atramentov, Sissel Hansen, A. Stefanik, W. D. Shephard, M. McKenna, Sharon Hagopian, K. Papageorgiou, V. Stolin, P. Skubic, Jean-Roch Vlimant, D. Skow, M. Vaz, Rodney Walker, Brajesh C Choudhary, M. Eads, M. Jaffré, M. A.C. Cummings, Raymond Brock, N. Wilcer, M. Larwill, V. Manakov, P. Tamburello, D. Coppage, G. Geurkov, J. N. Butler, R. Rucinski, Gavin Davies, Boaz Klima, P. van Gemmeren, S. Doulas, R. McCroskey, Andre Sznajder, J. Anderson, M. Doidge, L. Coney, T. Regan, Yuri Gershtein, F. Badaud, I. Katsanos, R. Beuselinck, P. D. Grannis, H. D. Wahl, T. Yasuda, V. White, S. N. Gurzhiev, A. Nurczyk, D. Wicke, Emmanuelle Perez, A. Baden, G. C. Blazey, Y. Yen, B. Zhang, Jean-Francois Grivaz, Y. A. Yatsunenko, S. H. Ahn, Arnaud Lucotte, B. Hoeneisen, Z. Ke, Alexander Kupco, J. Steele, N. A. Naumann, P.R. Vishwanath, H. J. Willutzki, J. Olsen, Y. Scheglov, Kaushik De, P. Russo, S. Baffioni, J. D. Hobbs, I. Hall, M. J. Ferreira, J. Warchol, A. Chandra, P. de Jong, Ricardo Piegaia, Florian Beaudette, M. Arov, R. Partridge, Gilvan Alves, J. Barreto, F. Yoffe, B. Satyanarayana, I.K. Prokhorov, K. Goldmann, B. Andrieu, P. Jonsson, E. Bockenthien, G. Bernardi, Freya Blekman, R. T. Neuenschwander, R. Hance, S. Tentindo-Repond, Carl Lindenmeyer, Heriberto Castilla-Valdez, D. Bauer, L. Canal, M. Bhattacharjee, F. Charles, G. Savage, I. Blackler, M. Bowden, Emanuela Barberis, Li Jingyuan, Kazunori Hanagaki, Dongliang Zhang, X. Meng, Marcel Vreeswijk, B. Spurlock, Thomas Hebbeker, M. Mulders, E.V. Komissarov, S. Chakrabarti, Peter Love, P. Johnson, P. Rubinov, T. Nunnemann, B. Baldin, A. Koubarovsky, C. Luo, Randy Ruchti, Manas Maity, M. A. Strang, J. Molina, C. Noeding, Reinhard Schwienhorst, M. H.G. Souza, Jan Stark, P. Polosov, Seo Won Lee, Henry Lubatti, Ashok Kumar, Charles Leggett, Juan Estrada, M. C. Cousinou, Julia S. Meyer, Zeno Dixon Greenwood, D. Käfer, A. Bellavance, M. Litmaath, A. A. Mayorov, K. W. Merritt, T. Vu Anh, M. Wegner, Mansoora Shamim, Carlos Avila, S. Sumowidagdo, S.A. Kahn, H. Greenlee, Sabine Crépé-Renaudin, J. Cammin, V. Oguri, C. Schwanenberger, W. M. Van Leeuwen, O. Peters, Marumi Kado, E. Galyaev, Liyuan Han, James C. Green, M. Zdrazil, Tulika Bose, S. Yacoob, C. Franklin, D. Huffman, W. M. Lee, N. Kirsch, P. Banerjee, M. Demarteau, A. Kharchilava, Z. M. Wang, David Miller, Carmen García, H. Haggerty, J. Dyer, A.A. Nozdrin, Gregory R Snow, G. Steinbrück, Andrew Brandt, S. Rapisarda, Andre Sopczak, M. Agelou, M. Binder, A. C.S. Assis Jesus, Guennadi Borissov, L. Sawyer, Philip Baringer, George Alverson, H. E. Fisk, Sergey Kuleshov, S. Protopopescu, Lev Dudko, C. Biscarat, E. Haggard, Aran Garcia-Bellido, P. Lewis, D. Hedin, M. Zanabria, Cristina Galea, Christophe Clement, D. Denisov, Elliott Cheu, S. Fu, W. C. Fisher, S. Moua, G. Gutierrez, Hwi Dong Yoo, S. Sengupta, A. S. Ito, Kirti Ranjan, H.E. Miettinen, Carsten Hensel, S. Kesisoglou, A. A. Vorobyov, A. V. Kozelov, D. Edmunds, M. Yan, S. Jabeen, Victor Daniel Elvira, S. Burke, W. E. Cooper, J. Hays, Xiuping Li, Q. Z. Li, V. V. Tokmenin, Neeti Parashar, S. Dean, Stephan Linn, A. Lobodenko, V. A. Bodyagin, Tae Jeong Kim, R. Bernhard, D. A. Wijngaarden, M. Gao, A. Cothenet, G. Hesketh, N. Oshima, M. P. Sanders, M. Zielinski, Daniel Bloch, J. Fast, Nikolay Terentyev, N. Wallace, M. Sosebee, Gustaaf Brooijmans, Sergey Burdin, A. Sanchez-Hernandez, Robert Kehoe, J. Lu, P. J. Van Den Berg, Jessica Levêque, K. Bos, Marc Besancon, J. Temple, T. Christiansen, Bobby Samir Acharya, H. A. Neal, Sung Keun Park, D. Meder, H. C. Shankar, V. Sorín, T. R. Wyatt, V. Zutshi, V. Vysotsky, B. G. Pope, M. A. Kubantsev, B. O. Oshinowo, W. Barg, Marvin Johnson, A. A. Schukin, M. R. Krishnaswamy, Sebastian Grinstein, O. Kouznetsov, E. Flattum, R. Yamada, M. Warsinsky, O. Bardon, T. Edwards, K. Yip, N. Xuan, L. Stutte, R. D. Schamberger, Timothy Andeen, R. E. Ray, L. Lueking, K. Krempetz, C. Miao, W. L. Prado Da Silva, S. Chopra, Andrew Askew, Zhengguo Zhao, Brigitte Vachon, D. Evans, Gregory J Pawloski, A.S. Dyshkant, M. Buehler, Jiri Kvita, V.V. Teterin, M. Lynker, J. Yu, X. F. Song, M. V. S. Rao, N. R. Stanton, J. Torborg, N. K. Mondal, Lev Uvarov, G. Le Meur, D. Shpakov, R. Jesik, S. Beauceron, Ariel Schwartzman, Melissa Ridel, Dorothee Schaile, G. Cisko, T. C. Bacon, Alexey Ferapontov, M. Wetstein, J. Bystricky, Zhenbin Wu, J. Foglesong, J. Fagan, Robert Harrington, A. Mendes, T. Fitzpatrick, Christian Schmitt, S. Nelson, R. Gelhaus, H. E. Montgomery, C. De La Taille, P. Mättig, K. Gray, E. Popkov, M. Hohlfeld, K. Del Signore, R. Illingworth, C. Han, D. Mihalcea, C. De Oliveira Martins, Victor Golovtsov, P. N. Ratoff, Emily Nurse, Elizabeth Gallas, T. McMahon, Maksym Titov, V. E. Kuznetsov, V. Gavrilov, D. Olis, Wendy Taylor, Allan G Clark, Roger Moore, R. Goodwin, Johannes Elmsheuser, J. T. Eltzroth, P. Neustroev, Laurent Duflot, David Cutts, R. Ramirez-Gomez, R. Kwarciany, Rupinder Kaur, Daniel Whiteson, Bradley Cox, S. J. De Jong, B. Kothari, J. Coss, D. Markley, A. A. Shchukin, L. Babukhadia, Frank Fiedler, E. Kajfasz, A. Magerkurth, A. Zatserklyaniy, N.A. Russakovich, M. Das, V. N. Evdokimov, Gervasio Gomez, Michael Begel, Eduardo De Moraes Gregores, G. A. Davis, Boris Tuchming, Luiz Mundim, J. F. Renardy, Limin Wang, Marc-Andre Pleier, M. Doets, N.V. Mokhov, B. Åsman, A. P. Heinson, T. H. Burnett, G. S. Muanza, R. E. Hall, D. Fein, M. Fortner, Don Lincoln, Erich Varnes, P. W. Balm, C. Hebert, Ulrich Heintz, M. Matulik, A. Bishoff, H. Jöstlein, S. Krzywdzinski, J. Green, A. Zylberstejn, Frank Filthaut, R. Kubinski, F. Lehner, D. M. Strom, B. C.K. Casey, Y. P. Merekov, E. Shabalina, J. Guglielmo, Kyoung-Ho Kim, Andy Haas, L. Phaf, G. W. Wilson, Frederic Deliot, Christopher George Tully, Y. M. Kharzheev, Patrick Slattery, G. J. Otero y Garzón, T. Toole, S. Uvarov, A. Boehnlein, H. L. Melanson, Ivor Fleck, J. Snow, B. Quinn, J. H. Christenson, Makoto Tomoto, David H. Adams, Alice Bean, F. Canelli, N. Oliveira, Maria Elena Pol, W. Gu, A. P. Kaan, J. Gardner, R. Choate, Walter Freeman, J. Kotcher, S. Anderson, Harald Fox, M. Vaupel, Y. D. Mutaf, I. A. Vasilyev, P. M. Perea, and F. Villeneuve-Seguier

Subjects
Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Tevatron, 01 natural sciences, Particle detector, law.invention, Nuclear physics, Data acquisition, law, 0103 physical sciences, Fermilab, 010306 general physics, Collider, Instrumentation, Physics, 010308 nuclear & particles physics, business.industry, Detector, Electrical engineering, Particle accelerator, D0 experiment, Experimental High Energy Physics, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Physics::Accelerator Physics, High Energy Physics::Experiment, business
Abstract

The DØ experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements to the Tevatron and to enhance its physics capabilities. We describe the new elements of the detector, including the silicon microstrip tracker, central fiber tracker, solenoidal magnet, preshower detectors, forward muon detector, and forward proton detector. The uranium/liquid-argon calorimeters and central muon detector, remaining from Run I, are discussed briefly. We also present the associated electronics, triggering, and data acquisition systems, along with the design and implementation of software specific to DØ. © 2006 Elsevier B.V. All rights reserved.

Published
2016

9. Cosmic ray test of INO RPC stack

Author

B. Satyanarayana, Subrata Pal, P. Nagaraj, A. Redij, R. R. Shinde, M. N. Saraf, V. M. Datar, L.V. Reddy, P. Verma, S.D. Kalmani, M. Bhuyan, N.K. Mondal, S.M. Lahamge, and D. Samuel

Subjects
Physics, Nuclear and High Energy Physics, Resistive touchscreen, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Cosmic ray, Tracking (particle physics), Nuclear physics, Stack (abstract data type), Observatory, High Energy Physics::Experiment, Neutrino, Instrumentation
Abstract

The India-based Neutrino Observatory (INO) collaboration is planning to build a 50 kt magnetised iron calorimeter (ICAL) detector using glass Resistive Plate Chambers (RPCs) as active detector elements. A stack of 12 such glass RPCs of 1 m ×1 m in area is tracking cosmic ray muons for over three years. In this paper, we will review the constructional aspects of the stack and discuss the performance of the RPCs using this cosmic ray data.

Published
2012
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10. INO prototype detector and data acquisition system

Author

Sudeb Bhattacharya, L.V. Reddy, R. R. Shinde, S. K. Rao, P.R. Sarma, V. M. Datar, S. S. Upadhya, Y. P. Viyogi, P. Verma, Sarika Bhide, M.S. Bhatia, S. Chattopadhyay, Satyajit Jena, M. N. Saraf, B. Satyanarayana, N.K. Mondal, B. K. Nagesh, Saikat Biswas, P. Nagaraj, V.B. Chandratre, Satyajit Saha, P. Mukhopadhyay, Anita Behere, and S.D. Kalmani

Subjects
Physics, Nuclear and High Energy Physics, Resistive touchscreen, business.industry, Detector, Nuclear physics, Data acquisition, Stack (abstract data type), Observatory, Underground laboratory, Cosmic muons, Neutrino, Aerospace engineering, business, Instrumentation
Abstract

India-based Neutrino Observatory (INO) collaboration is proposing to build a 50 kton magnetised iron calorimetric (ICAL) detector in an underground laboratory to be located in South India. Glass resistive plate chambers (RPCs) of about 2 m×2 m in size will be used as active elements for the ICAL detector. As a first step towards building the ICAL detector, a 35 ton prototype of the same is being set up over ground to track cosmic muons. Design and construction details of the prototype detector and its data acquisition system will be discussed. Some of the preliminary results from the detector stack will also be highlighted.

Published
2009
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11. Development of glass resistive plate chambers for INO experiment

Author

R. R. Shinde, B. Satyanarayana, M. N. Saraf, Satyajit Jena, V. M. Datar, P. Verma, S.D. Kalmani, P. Nagaraj, N.K. Mondal, and L.V. Reddy

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Resistive touchscreen, Fabrication, Calorimeter (particle physics), Observatory, Nuclear engineering, Detector, Neutrino, Neutrino oscillation, Instrumentation
Abstract

The India-based Neutrino Observatory (INO) collaboration is planning to build a massive 50 kton magnetised Iron Calorimeter (ICAL) detector, to study atmospheric neutrinos and to make precision measurements of the parameters related to neutrino oscillations. Glass Resistive Plate Chambers (RPCs) of about 2 m×2 m in size are going to be used as active elements for the ICAL detector. We have fabricated a large number of glass RPC prototypes of 1 m×1 m in size and have studied their performance and long term stability. In the process, we have developed and produced a number of materials and components required for fabrication of RPCs. We have also designed and optimised a number of fabrication and quality control procedures for assembling the gas gaps. In this paper we will review our various activities towards development of glass RPCs for the INO ICAL detector. We will present results of the characterisation studies of the RPCs and discuss our plans to prototype 2 m×2 m sized RPCs.

Published
2009
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12. The muon system of the Run II DØdetector

Author

V. A. Bezzubov, J. P. Negret, Michael Shupe, V. Simak, V. M. Abazov, J. Raskowski, George Davey Smith, O.V. Dvornikov, V. N. Evdokimov, S. Doulas, L. S. Vertogradov, D. Beutel, A. Zieminski, V.B. Vysotsky, D. Hedin, P. Hanlet, Y. Scheglov, T. Fitzpatrick, Matthew A. Marcus, P. Polozov, V. V. Tokmenin, N. A. Kuchinsky, P.R. Vishwanath, H. J. Willutzki, R. Jayanti, Nikolay Terentyev, Tiefu Zhao, A. M. Kalinin, Sw. Banerjee, Vladimir Gavrilov, Rupert Leitner, E. Hazen, H. C. Shankar, N.A. Russakovich, Henry Lubatti, B. S. Acharya, N. Jouravlev, A. S. Ito, V. M. Korablev, V. Sirotenko, K. Soustruznik, B. Gómez, G. Gutierrez, Karel Smolek, A. A. Schukin, V. M. Podstavkov, M. Fortner, D. Tompkins, E. Chi, Neeti Parashar, L. Stutte, D. A. Stoyanova, S.D. Kalmani, Shashikant Dugad, O. Bardon, V. S. Narasimham, V. V. Lipaev, L.V. Reddy, A. Kostritsky, A.S. Dyshkant, H. Cease, N. Parua, N. Kirsch, V.V. Teterin, B. M. Sabirov, A. A. Mayorov, S.Y. Porokhovoi, M. Eads, A.A. Nozdrin, M. Larwill, A. Evdokimov, S. N. Gurzhiev, D. Shpakov, Yu. A. Gornushkin, I.K. Prokhorov, M. Kozlovsky, Sissel Hansen, A. A. Shishkin, Anurag Gupta, Y. A. Yatsunenko, Alexander Kupco, T. Regan, Viatcheslav Stolin, Manas Maity, P. Nagaraj, Lev Uvarov, R. McCroskey, A. Narayanan, J. Steinberg, E. Machado, R. Goodwin, P. Neustroev, E.V. Komissarov, Yuri Gershtein, T. Marshall, Milos Lokajicek, K. A. Johns, Y. N. Kharzheev, Darien Wood, M. Zanabria, S.A. Zvyagintsev, Victor Golovtsov, D. Denisov, H. Haggerty, N.V. Mokhov, R. Yamada, Y. P. Merekov, M.A. Baturitsky, Dan Green, M. Wobisch, F. Yoffe, J. N. Butler, I. A. Vasilyev, J. Temple, B. Baldin, S. Uvarov, N. K. Mondal, H. T. Diehl, Sergey Kuleshov, V. L. Malyshev, H. S. Mao, A. Vorobyov, A. V. Kozelov, M. V. S. Rao, S. P. Denisov, B. O. Oshinowo, G. D. Alexeev, M. R. Krishnaswamy, A. Lobodenko, V. A. Bodyagin, Daria Zieminska, B. Hoeneisen, B. Satyanarayana, V.A. Mikhailov, J. F. Bartlett, C. Rotolo, G. Alkhazov, V. Anosov, A. Stefanik, and N. P. Kravchuk

Subjects
Physics, Nuclear and High Energy Physics, Toroid, Physics::Instrumentation and Detectors, Detector, Tevatron, Particle accelerator, law.invention, Nuclear physics, law, Muon collider, Scintillation counter, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Collider, Instrumentation
Abstract

We describe the design, construction, and performance of the upgraded DO muon system for Run II of the Fermilab Tevatron collider. Significant improvements have been made to the major subsystems of the DO muon detector: trigger scintillation counters, tracking detectors, and electronics. The Run II central muon detector has a new scintillation counter system inside the iron toroid and an improved scintillation counter system outside the iron toroid. In the forward region, new scintillation counter and tracking systems have been installed. Extensive shielding has been added in the forward region. A large fraction of the muon system electronics is also new.

Published
2005
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13. Scintillation counters for the DØ muon upgrade

Author

J. M. Kohli, S.D. Kalmani, Shashikant Dugad, Sissel Hansen, T. Regan, M. V. S. Rao, S. Fuess, Vipin Bhatnagar, Bobby Samir Acharya, H. C. Shankar, S. M. Chang, R. Yamada, B. Baldin, N. Grossman, A. S. Ito, S. H. Ahn, S. A. Jerger, Anurag Gupta, M. Bhattacharjee, N. Parua, Jasvinder A. Singh, M. Fortner, T. Yasuda, S. Igarashi, James C. Green, D. Hedin, Suman Bala Beri, J. L. González Solís, M. Nicola, H. Johari, S. Chopra, T. Rockwell, V. S. Narasimham, B. G. Pope, Raymond Brock, A. Narayanan, D. Denisov, Wagner Carvalho, P.R. Vishwanath, E. Flattum, Dan Green, Andrew Brandt, N. K. Mondal, H. T. Diehl, David Miller, H. Haggerty, P. M. Sood, J. N. Butler, S. Fahey, Sharmila Banerjee, L.V. Reddy, J. Wilcox, T. Hu, M. A. C. Cummings, T. Marshall, Darien Wood, P. Duggan, R. Markeloff, J. R. T. de Mello Neto, M. Nila, R. Hernández-Montoya, T. McMahon, R. Hatcher, P. Nagaraj, W. Smart, K. A. Johns, P. Z. Quintas, A. Taketani, B. Satyanarayana, M. R. Krishnaswamy, and V. Glebov

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Photomultiplier, Muon, Upgrade, Physics::Instrumentation and Detectors, Muon collider, Scintillation counter, Tevatron, Physics::Accelerator Physics, High Energy Physics::Experiment, Instrumentation
Abstract

We present the results of an upgrade to the DO muon system. Scintillating counters have been added to the existing central DO muon system to provide rejection for cosmic-ray muons and out-of-time background, and to provide additional fast-timing information for muons in an upgraded Tevatron. Performance and results from the 1994-1996 Tevatron run are presented.

Published
1997
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14. Glass RPC detector R&D for a mega neutrino detector

Author

P. Nagaraj, L.V. Reddy, M. Bhuyan, R. R. Shinde, S.D. Kalmani, P. Verma, S.M. Lahamge, B. Satyanarayana, N. K. Mondal, V. M. Datar, M. N. Saraf, D. Samuel, and A. Redij

Subjects
Physics, Nuclear physics, Neutrino detector, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Observatory, Detector, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Tracking (particle physics), Particle identification
Abstract

India-based Neutrino Observatory (INO) collaboration has proposed a 50 kTons magnetised iron calorimeter (ICAL), whose primary goals are to precisely determine oscillation parameters of the atmospheric neutrinos, to study matter effects on the oscillations and finally to use it as a long baseline detector for the neutrino beams. Good tracking and energy resolutions, good directionality (translating to a time resolution of better than a ns) and charge identification of the detecting particles are the essential requirements of ICAL detector. The ICAL detector will cover an area of about 100,000 m2 and will use about 30,000 glass Resistive Plate Chambers (RPCs) of about 2 m × 2 m in area as active detector elements. An aggressive R&D program to develop and characterise RPCs operating in the avalanche mode was undertaken. We will describe our R&D efforts towards developing these devices and will present the results of their characterisation studies.

Published
2009
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15. Design, performance, and calibration of CMS forward calorimeter wedges

Author

Pete Markowitz, Mark Raymond Adams, Gyorgy Bencze, G. Antchev, Gyorgy Vesztergombi, Richard G Kellogg, E. Hazen, D. A. Sanders, H. Ozkurt, Sezen Sekmen, D. Elvira, N. Ilyina, V. Abramov, W. C. Fisher, Stefan Piperov, A. Korablev, Ramazan Sever, A. Krinitsyn, I. Vankov, Sergey Kuleshov, U. Akgun, B. Sherwood, A Kuzucu-Polatoz, Taylan Yetkin, A. Ryazanov, E. Machado, Manjit Kaur, A. Khmelnikov, M. Serin-Zeyrek, V. Lukanin, A. Krokhotin, E. W. Anderson, S. Koylu, A. Vishnevskiy, I. Dumanoglu, M. Deliomeroglu, Pelin Kurt, András Fenyvesi, Salim Cerci, G. Baiatian, Erhan Gülmez, L. Dimitrov, V. P. Ladygin, Mehmet Zeyrek, Sergey Petrushanko, Leander Litov, Jean-Pierre Merlo, S. Ayan, K. Dindar, R. Thomas, S. X. Wu, Leonid Levchuk, T. Grassi, Y. Ma, E. Vlassov, R. Bard, Sarah Catherine Eno, T. Haelen, Jordan Damgov, B. Grinev, N. K. Mondal, V. Talov, Salavat Abdullin, Seema Sharma, Randy Ruchti, Mustafa Numan Bakirci, W. Qiang, Tiziano Camporesi, H. S. Bawa, Nural Akchurin, K. Gumus, Kurtis F Johnson, Jeremy Mans, C. Jarvis, C. Ozkan, Pavel Sorokin, H. S. Budd, A. Volodko, L.V. Reddy, Alexey Kalinin, H. Gamsizkan, Igor Golutvin, Alexi Mestvirishvili, Y. Korneev, I. Emeliantchik, L. Turchanovich, Yasar Onel, E. Norbeck, K. Teplov, Efe Yazgan, A. Petrosyan, A. T. Laasanen, James Rohlf, Hamit Mermerkaya, Christopher George Tully, Shuichi Kunori, G. Mescheryakov, Vladimir Gavrilov, F. Duru, Albert M. Sirunyan, M. Wetstein, Mithat Kaya, J. Whitmore, A. H. Heering, Suman Bala Beri, V. Genchev, P. Moissenz, Y. S. Chung, A. Demianov, A. Ronzhin, R. Stefanovich, Andris Skuja, H. Topakli, Alexey Volkov, S. R. Chendvankar, A. Pompos, J. M. Kohli, V. Kryshkin, M. Hashemi, L. M. Cremaldi, Laird Kramer, Kajari Mazumdar, A. Gribushin, E. Eskut, C. Sanzeni, Daniel John Karmgard, S.D. Kalmani, Shashikant Dugad, Dan Green, D. O. Litvintsev, A. Ulyanov, I. Suzuki, I. Kisselevich, K. Carrell, Drew Baden, Igor Vodopiyanov, V. Stolin, P. Zalan, M. Miller, I. Schmidt, K. Sogut, Olga Kodolova, Richard Vidal, S. Semenov, Ashok Kumar, V. Senchishin, S. Los, Jim Freeman, V. Podrasky, B. S. Acharya, Yuri Gershtein, P. de Barbaro, M. Mohammadi-Najafabadi, V. Pikalov, D. Winn, P. Nagaraj, Marc M Baarmand, E. Isiksal, K. Burchesky, P. I. Goncharov, Grigory Safronov, H. Kim, Nikolai Shumeiko, Andras Laszlo, J. E. Elias, J.J. Reidy, Sharon Hagopian, Mehmet Vergili, P. Verma, J. M. Hauptman, Serdar Aydın, K. Babich, S. Katta, S. Sergeyev, Vipin Bhatnagar, Long Wang, V. Massolov, J. Olson, F. Varela, V. E. Barnes, V. Hagopian, L. I. Sarycheva, Aldo Penzo, V. Kalagin, A. Kayis-Topaksu, Richard Wigmans, Jasvinder A. Singh, Irina Vardanyan, N. Ozdes-Koca, Christoph Posch, I. G. Kosarev, Stephan Linn, M. Spezziga, Mandar Patil, P. Cushman, Kerem Cankocak, S. Paktinat, V. Smirnov, German Martinez, C. Lawlor, S. W. Banerjee, B. Satyanarayana, Gulsen Onengut, D. Lazic, L. R. Sulak, A. Yershov, V. Kaftanov, Arie Bodek, Anatoli Zarubin, E. Rogalev, M. Arcidy, V. Lubinsky, Suat Ozkorucuklu, T. De Visser, V. Kolossov, S. Banerjee, A. Pal, Çukurova Üniversitesi, MÜ, Fen Fakültesi, Fizik Bölümü, Cankoçak, Kerem, and Çukurova Üniversitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Electromagnetic radiation, Calorimeter, Nuclear physics, Pion, Ionization, Pseudorapidity, Production (computer science), High Energy Physics::Experiment, Detectors and Experimental Techniques, Engineering (miscellaneous), Energy (signal processing), Cherenkov radiation
Abstract

Petrosyan, Artem/0000-0003-2166-7894; Piperov, Stefan/0000-0002-9266-7819; Gumus, Kazim/0000-0002-1450-6868; Ozkorucuklu, Suat/0000-0001-5153-9266; Kuleshov, Sergey V/0000-0002-3065-326X; Gulmez, Erhan/0000-0002-6353-518X; Bodek, Arie/0000-0003-0409-0341; TOPAKSU, Aysel KAYIS/0000-0001-5819-6913; Cankocak, Kerem/0000-0002-3829-3481; Babich, Kanstantsin S./0000-0002-4493-0571; Yazgan, Efe/0000-0001-5732-7950; AYDIN, Sezgin/0000-0001-5380-1512; Baarmand, Marc/0000-0002-9792-8619; Lychkovskaya, Natalia/0000-0001-5084-9019; Mondal, Naba/0000-0002-4098-8063; Sogut, Kenan/0000-0002-9682-2855; Uliyanov, Alexey/0000-0001-6935-8949 WOS: 000251382800015 We report on the test beam results and calibration methods using high energy electrons, pions and muons with the CMS forward calorimeter (HF). The HF calorimeter covers a large pseudorapidity region (3

Published
2008

16. Extending the range of particle densities observed by GRAPES-3

Author

M. Zuberi, S. K. Gupta, V.B. Jhansi, S. R. Dugad, P. K. Mohanty, Y. Hayashi, B. S. Rao, S. D. Morris, Pranaba K. Nayak, P. Jagadeesan, K. P. Arunbabu, Akitoshi Oshima, S. Kawakami, Shakeel Ahmad, Hiroshi Kojima, Anuj Chandra, Shoichi Shibata, Ashish Jain, Balakrishnan Hariharan, and L.V. Reddy

Subjects
Telescope, Nuclear physics, Physics, Photomultiplier, Muon, Air shower, law, Scintillation counter, Cosmic ray, Scintillator, GRAPES-3, law.invention
Abstract

The GRAPES-3 experiment is a unique facility to study cosmic ray energy spectrum and composition with high precision. It consists an array of 400 plastic scinitillation detectors and a muon telescope of 3712 proportional counters to study extensive air shower (EAS) phenomenon around knee ($\gtrsim$ 10$^{15}$ eV). Study of energy spectrum and composition of primary cosmic rays (PCRs) can improve the understanding about the nature of the sources accelerating PCRs to energies \(\gtrsim 10^{15}\) eV which may be studied by using high statistics data produced by GRAPES-3. Measurement of particle densities ($\gtrsim$ 5000 m$^{-2}$) is achieved by viewing each scintillator with two photomultiplier tubes (PMTs). The results obtained till date will be presented at the conference.

17. Atmospheric temperature dependence of muon intensity measured by the GRAPES-3 experiment

Author

Shafiq Ahmad, B. S. Rao, A. Jain, Shoichi Shibata, P. K. Mohanty, M. Zuberi, K. Tanaka, S. K. Gupta, Arun Babu Kollamparambil Paul, Y. Hayashi, Akitoshi Oshima, V.B. Jhansi, S. Kawakami, P. Jagadeesan, Hiroshi Kojima, Balakrishnan Hariharan, Prakash Kumar Nayak, L.V. Reddy, Anuj Chandra, S. R. Dugad, and S. D. Morris

Subjects
Physics, Nuclear physics, Muon, Amplitude, Hadron, Attenuation length, Cosmic ray, Effective temperature, Intensity (heat transfer), GRAPES-3
Abstract

The large area ($ \rm 560 \, m^2$) GRAPES-3 tracking muon telescope located at Ooty, India has been operating uninterruptedly since 2001. Everyday it records $ \rm 4\times 10^9$ muons of energy $\rm > 1 \, GeV$ with an angular resolution of $\rm \sim 4^{\circ}$. Atmospheric temperature variation affects the rate of decay of these GeV muons produced by the galactic cosmic rays (GCRs), which in turn modulates the intensity of detected muons. Since the daily temperature induced variation combines with the diurnal modulation of the GCRs by the magnetized solar wind, it becomes rather difficult to segregate the respective contributions of these two phenomena. A small seasonal variation in the intensity of cosmic ray muon ($ \rm \sim 0.4\%$) with periodicity $\rm \sim $ 1 year (Yr) was measured by analysing the GRAPES-3 data of six years (2005-2010). The effective temperature `$\rm T_{eff}$' of the upper atmosphere above Ooty also displayed a similar periodic variation with an amplitude of $\rm \sim 1 K$, which was responsible for the observed seasonal variation in the muon intensity. At GeV energies, the muons detected by the GRAPES-3 show an anti-correlation with $\rm T_{eff}$ calculated by using a hadronic attenuation length $\lambda$. Using the fast Fourier transform (FFT) technique and making use of the anti-correlation between the seasonal variation of $\rm T_{eff}$ with the muon intensity, we calculated the temperature coefficient $\rm \alpha_T$. The magnitude of $\rm \alpha_T$ was found to scale with the assumed attenuation length $\rm \lambda$, which we varied within a range of 80-180 $\rm g cm^{-2}$. However, the actual magnitude of the correction was found to be independent of the value of $\rm \lambda$.

18. Dependence of hadronic interaction models in atmospheric electric field simulations for GRAPES-3

Author

S. Mahapatra, K. Ramesh, S. R. Dugad, P. Jagadeesan, K. Tanaka, S.S.R. Inbanathan, M. Chakraborty, V.B. Jhansi, P.S. Rakshe, F. Varsi, Anuj Chandra, S. D. Morris, Hiroshi Kojima, M. Zuberi, S. K. Gupta, L.V. Reddy, S. Sharma, S. Kawakami, B. S. Rao, P. K. Mohanty, A. Jain, Balakrishnan Hariharan, Shafiq Ahmad, Yasushi Muraki, Pankaj Jain, Shoichi Shibata, Pranaba K. Nayak, Akitoshi Oshima, Y. Hayashi, and D. Pattanaik

Subjects
Nuclear physics, Physics, Work (thermodynamics), Muon, Astrophysics::High Energy Astrophysical Phenomena, Electric field, Hadron, Monte Carlo method, Electric potential, Event (particle physics), GRAPES-3
Abstract

The thunderstorm events observed by GRAPES-3 muon telescope can be studied with aid of Monte Carlo simulations. One such event observed on 1 December 2014 was analysed and its electrical properties of thundercloud were derived using muon imaging. This recent result showed production of Giga-Volt potential in thunderclouds, possibly responsible for production of 100 MeV $\gamma$-rays in terrestrial $\gamma$-ray flashes. However, these properties derived from simulations rely on choice of low and high energy hadronic interaction models used in CORSIKA. So, the derived properties are model dependent which makes this study very important. The comparison of various combinations using low and high energy hadronic models and its impact on electric potential estimation will be discussed in this work.

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