Prof Subir Sarkar: Publications

IceCube

IceCube at Oxford

I am a member since 2004 of the IceCube collaboration which discovered cosmic high energy neutrinos and identified some of their astrophysical sources.

IceCube @ Oxford

Calibration and characterization of the IceCube photomultiplier tube

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 618:1-3 (2010) 139-152

Authors:

R Abbasi, Y Abdou, T Abu-Zayyad, J Adams, JA Aguilar, M Ahlers, K Andeen, J Auffenberg, X Bai, M Baker, SW Barwick, R Bay, JL Bazo Alba, K Beattie, JJ Beatty, S Bechet, JK Becker, KH Becker, ML Benabderrahmane, J Berdermann, P Berghaus, D Berley, E Bernardini, D Bertrand, DZ Besson, M Bissok, E Blaufuss, DJ Boersma, C Bohm, O Botner, L Bradley, J Braun, S Buitink, M Carson, D Chirkin, B Christy, J Clem, S Cohen, C Colnard, DF Cowen, MV D'Agostino, M Danninger, C De Clercq, L Demirörs, O Depaepe, F Descamps, P Desiati, G De Vries-Uiterweerd, T DeYoung, JC Díaz-Vélez, J Dreyer, JP Dumm, MR Duvoort, R Ehrlich, J Eisch, RW Ellsworth, O Engdegård, S Euler, PA Evenson, O Fadiran, AR Fazely, T Feusels, K Filimonov, C Finley, MM Foerster, BD Fox, A Franckowiak, R Franke, TK Gaisser, J Gallagher, R Ganugapati, M Geisler, L Gerhardt, L Gladstone, A Goldschmidt, JA Goodman, D Grant, T Griesel, A Groß, S Grullon, RM Gunasingha, M Gurtner, C Ha, A Hallgren, F Halzen, K Han, K Hanson, Y Hasegawa, J Haugen, K Helbing, P Herquet, S Hickford, GC Hill, KD Hoffman, A Homeier, K Hoshina, D Hubert, W Huelsnitz, JP Hülß, PO Hulth

Abstract:

Over 5000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospheric cosmic ray showers. IceCube is using the 10-in. diameter R7081-02 made by Hamamatsu Photonics. This paper describes the laboratory characterization and calibration of these PMTs before deployment. PMTs were illuminated with pulses ranging from single photons to saturation level. Parameterizations are given for the single photoelectron charge spectrum and the saturation behavior. Time resolution, late pulses and afterpulses are characterized. Because the PMTs are relatively large, the cathode sensitivity uniformity was measured. The absolute photon detection efficiency was calibrated using Rayleigh-scattered photons from a nitrogen laser. Measured characteristics are discussed in the context of their relevance to IceCube event reconstruction and simulation efforts. © 2010 Elsevier B.V.

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GZK Neutrinos after the Fermi-LAT Diffuse Photon Flux Measurement

(2010)

Authors:

M Ahlers, LA Anchordoqui, MC Gonzalez-Garcia, F Halzen, Subir Sarkar

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Using cosmic neutrinos to search for non-perturbative physics at the Pierre Auger Observatory

(2010)

Authors:

Luis A Anchordoqui, Haim Goldberg, Dariusz Gora, Thomas Paul, Markus Roth, Subir Sarkar, Lisa Lee Winders

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Systematic effects in the extraction of the 'WMAP haze'

(2010)

Authors:

Philipp Mertsch, Subir Sarkar

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IceCube Collaboration Contributions to the 2009 International Cosmic Ray Conference

ArXiv 1004.2093 (2010)

Authors:

R Abbasi, Y Abdou, T Abu-Zayyad, J Adams, JA Aguilar, M Ahlers, K Andeen, J Auffenberg, X Bai, M Baker, SW Barwick, R Bay, JL Bazo Alba, K Beattie, JJ Beatty, S Bechet, JK Becker, K-H Becker, ML Benabderrahmane, J Berdermann, P Berghaus, D Berley, E Bernardini, D Bertrand, DZ Besson, M Bissok, E Blaufuss, DJ Boersma, C Bohm, J Bolmont, O Botner, L Bradley, J Braun, D Breder, M Carson, T Castermans, D Chirkin, B Christy, J Clem, S Cohen, DF Cowen, MV D'Agostino, M Danninger, CT Day, C De Clercq, L Demiroers, O Depaepe, F Descamps, P Desiati, G de Vries-Uiterweerd, T DeYoung, JC Di-az-Velez, J Dreyer, JP Dumm, MR Duvoort, WR Edwards, R Ehrlich, J Eisch, RW Ellsworth, O Engdegard, S Euler, PA Evenson, O Fadiran, AR Fazely, T Feusels, K Filimonov, C Finley, MM Foerster, BD Fox, A Franckowiak, R Franke, TK Gaisser, J Gallagher, R Ganugapati, L Gerhardt, L Gladstone, A Goldschmidt, JA Goodman, R Gozzini, D Grant, T Griesel, A Gross, S Grullon, RM Gunasingha, M Gurtner, C Ha, A Hallgren, F Halzen, K Han, K Hanson, Y Hasegawa, K Helbing, P Herquet, S Hickford, GC Hill, KD Hoffman, A Homeier, K Hoshina, D Hubert, W Huelsnitz, J-P Hulss, PO Hulth, K Hultqvist, S Hussain, RL Imlay, M Inaba, A Ishihara, J Jacobsen, GS Japaridze, H Johansson, JM Joseph, K-H Kampert, A Kappes, T Karg, A Karle, JL Kelley, N Kemming, P Kenny, J Kiryluk, F Kislat, SR Klein, S Knops, G Kohnen, H Kolanoski, L Koepke, DJ Koskinen, M Kowalski, T Kowarik, M Krasberg, T Krings, G Kroll, K Kuehn, T Kuwabara, M Labare, S Lafebre, K Laihem, H Landsman, R Lauer, R Lehmann, D Lennarz, A Lucke, J Luenemann, J Lundberg, J Madsen, P Majumdar, R Maruyama, K Mase, HS Matis, CP McParland, K Meagher, M Merck, P Meszaros, T Meures, E Middell, N Milke, H Miyamoto, T Montaruli, R Morse, SM Movit, R Nahnhauer, JW Nam, P Niessen, DR Nygren, S Odrowski, A Olivas, M Olivo, M Ono, S Panknin, S Patton, L Paul, C Perez de los Heros, J Petrovic, A Piegsa, D Pieloth, AC Pohl, R Porrata, N Potthoff, PB Price, M Prikockis, GT Przybylski, K Rawlins, P Redl, E Resconi, W Rhode, M Ribordy, A Rizzo, JP Rodrigues, P Roth, F Rothmaier, C Rott, C Roucelle, D Rutledge, B Ruzybayev, D Ryckbosch, H-G Sander, S Sarkar, K Schatto, S Schlenstedt, T Schmidt, D Schneider, A Schukraft, O Schulz, M Schunck, D Seckel, B Semburg, SH Seo, Y Sestayo, S Seunarine, A Silvestri, A Slipak, GM Spiczak, C Spiering, M Stamatikos, T Stanev, G Stephens, T Stezelberger, RG Stokstad, MC Stoufer, S Stoyanov, EA Strahler, T Straszheim, K-H Sulanke, GW Sullivan, Q Swillens, I Taboada, A Tamburro, O Tarasova, A Tepe, S Ter-Antonyan, C Terranova, S Tilav, PA Toale, J Tooker, D Tosi, D Turcan, N van Eijndhoven, J Vandenbroucke, A Van Overloop, J van Santen, B Voigt, C Walck, T Waldenmaier, M Wallraff, M Walter, C Wendt, S Westerhoff, N Whitehorn, K Wiebe, CH Wiebusch, A Wiedemann, G Wikstrom, DR Williams, R Wischnewski, H Wissing, K Woschnagg, C Xu, XW Xu, G Yodh, S Yoshida

Abstract:

IceCube Collaboration Contributions to the 2009 International Cosmic Ray Conference

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Prof Subir Sarkar

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IceCube

IceCube at Oxford

Calibration and characterization of the IceCube photomultiplier tube

Authors:

Abstract:

GZK Neutrinos after the Fermi-LAT Diffuse Photon Flux Measurement

Authors:

Using cosmic neutrinos to search for non-perturbative physics at the Pierre Auger Observatory

Authors:

Systematic effects in the extraction of the 'WMAP haze'

Authors:

IceCube Collaboration Contributions to the 2009 International Cosmic Ray Conference

Authors:

Abstract:

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Prof Subir Sarkar

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IceCube

IceCube at Oxford

Calibration and characterization of the IceCube photomultiplier tube

Authors:

Abstract:

GZK Neutrinos after the Fermi-LAT Diffuse Photon Flux Measurement

Authors:

Using cosmic neutrinos to search for non-perturbative physics at the Pierre Auger Observatory

Authors:

Systematic effects in the extraction of the 'WMAP haze'

Authors:

IceCube Collaboration Contributions to the 2009 International Cosmic Ray Conference

Authors:

Abstract: