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Your search keyword '"Mirzoyan, Razmick"' showing total 14 results
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14 results on '"Mirzoyan, Razmick"'

1. First tests and long-term prospects of Geigermode avalanche photodiodes as camera sensors for IACTs

Author

Lorenz, Eckart, Mirzoyan, Razmick, Miyamoto, Hiroko, Otte, Nepomuk, and Renker, Dieter

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Geigermode avalanche photodiodes (G-APD) are novel photodetectors, which can detect single photons. This type of diodes might become an alternative to photomultipliers (PMT) in next-generation Imaging Air Cherenkov Telescopes. Prospects, limitations and development directions are be discussed. Results from first tests are reported., Comment: 4 pages, 7 figures, to appear in the proceedings of the 31th International Cosmic Ray Conference, Lodz, Poland, 2009

Published
2009

2. Wide-field prime-focus Imaging Atmospheric Cherenkov Telescopes: A systematic study

Author

Schliesser, Albert and Mirzoyan, Razmick

Subjects
Astrophysics
Abstract

By means of third-order optical theory as well as ray-tracing simulations we have investigated the feasibility of wide-field imaging atmospheric Cherenkov telescopes with a reflective prime-focus design. For a range of desired optical resolutions, we have determined the largest available field-of-view of single-piece spherical, single-piece parabolic, tessellated spherical, tessellated parabolic and Davies-Cotton designs, always considering a wide range of design parameters. The Davies-Cotton design exhibits a surprising similarity to the tessellated parabolic design in its qualitative behaviour. Also, elliptic telescope designs with better off-axis imaging properties than Davies-Cotton are presented. We show that by using f/2 optics it is possible to build prime-focus telescopes with a full field-of-view of 10 degree at 0.1 degree resolution., Comment: 18 pages, 10 figures. Changed version contains all figures in eps format

Published
2005
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4. Prospects of using silicon photomultipliers for the astroparticle physics experiments EUSO and MAGIC

Author

Otte, A. Nepomuk, Dolgoshein, Boris, Hose, Jurgen, Klemin, Sergei, Lorenz, Eckart, Lutz, Gerhard, Mirzoyan, Razmick, Popova, Elena, Richter, Rainer H., Struder, Lothar W.J., and Teshima, Masahiro

Subjects
Photoelectric multipliers -- Analysis, Photoelectric multipliers -- Mechanical properties, Silicon -- Usage, Business, Electronics, Electronics and electrical industries
Abstract

We discuss the silicon photomultiplier as a novel photon detector for the Major Atmospheric Gamma Imaging Cerenkov Telescope and the Extreme Universe Space Observatory. For these astroparticle experiments we pursue two different developments of the SiPM. One development is pursued at MEPhI, where prototypes are available. In the course of this paper we will describe some characteristics of these devices. The second development, which is using the back illumination principle is at present in its design phase. Index Terms--Air shower experiments, avalanche photo diode (APD), high energy astroparticle experiments, silicon photomultiplier (SiPM).

Published
2006

5. Solid-state photon detector has low crosstalk: a silicon photomultiplier with two forms of crosstalk suppression is a nearly ideal photon detector for industry, nuclear medicine, and research

Author

Mirzoyan, Razmick, Dolgoshein, Boris, Barlow, Arthur, and Schilz, Jurgen

Subjects
Nuclear industry, Silicon, Detectors, Business, Electronics and electrical industries
Abstract

Typical low-light-level (LLL) applications such as astronomy, nuclear medicine, and medical imaging require measurements of the number of arriving photons over a wide range, from one up to several million [...]

Published
2009

9. The reflecting surface of the MAGIC-II Telescope

Author

Bastieri, Denis, Arnold, J., Baixeras, Carmen, Citterio, Oberto, Francesco Dazzi, Lotto, Barbara, Doro, Michele, Ghigo, Mauro, Giro, Enrico, Goebel, F., Kosyra, R., Lorenz, Eckart, Mariotti, Mose, Mirzoyan, Razmick, Paoletti, Riccardo, Pareschi, Giovanni, Pascoli, Donatella, Pepato, Adriano, Peruzzo, Luigi, Saggion, Antonio, Sartori, Paolo, and Sillanpaa, A.

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

The MAGIC Collaboration is building a second telescope, MAGIC II, improving the design of the current MAGIC Telescope. MAGIC II is being built at 85 m of distance from MAGIC I, and will also feature a huge reflecting surface of ~240 m$^2$ of area. One of the improvement is the design for the mirror of MAGIC II, that are lighter and larger, being square of 1 m of side and weighting around 15 kg. For the development and production of the new mirrors, two different techniques, both reliable and affordable in price, were selected: the diamond milling of aluminium surfaces and the cold slumping of thin glass panes. As tests for the second one are still ongoing, we present a description of the diamond milling technique, and its application and performance to the produced mirrors., Contribution to the 30th ICRC, Merida Mexico, July 2007 on behalf of the MAGIC Collaboration

Published
2007

10. Suzaku and Multi-Wavelength Observations of OJ 287 during the Periodic Optical Outburst in 2007

Author

Seta, Hiromi, primary, Isobe, Naoki, additional, Tashiro, Makoto S., additional, Yaji, Yuichi, additional, Arai, Akira, additional, Fukuhara, Masayuki, additional, Kohno, Kotaro, additional, Nakanishi, Kouichiro, additional, Sasada, Mahito, additional, Shimajiri, Yoshito, additional, Tosaki, Tomoka, additional, Uemura, Makoto, additional, Anderhub, Hans, additional, Antonelli, Lucio Angelo, additional, Antoranz, Pedro, additional, Backes, Michael, additional, Baixeras, Carmen, additional, Balestra, Silvia, additional, Barrio, Juan Abel, additional, Bastieri, Denis, additional, González, Josefa Becerra, additional, Becker, Julia K., additional, Bednarek, Wodzimierz, additional, Berger, Karsten, additional, Bernardini, Elisa, additional, Biland, Adrian, additional, Bock, Rudolf K., additional, Bonnoli, Giacomo, additional, Bordas, Pol, additional, Tridon, Daniela Borla, additional, Bosch-Ramon, Valenti, additional, Bose, Debanjan, additional, Braun, Isabel, additional, Bretz, Thomas, additional, Britvitch, Ilia, additional, Camara, Miguel, additional, Carmona, Emiliano, additional, Commichau, Sebastian, additional, Contreras, José Luis, additional, Cortina, Juan, additional, Dios, Ma Teresa Costado, additional, Covino, Stefano, additional, Curtef, Valentin, additional, Dazzi, Francesco, additional, DeAngelis, Alessandro, additional, DelPozo, Elsa De Cea, additional, DelosReyes, Raquel, additional, DeLotto, Barbara, additional, DeMaria, Michela, additional, DeSabata, Francesco, additional, Méndez, Carlos Delgado, additional, Domínguez, Alberto, additional, Dorner, Daniela, additional, Doro, Michele, additional, Elsaesser, Dominik, additional, Errando, Manel, additional, Ferenc, Daniela, additional, Fernández, Enrique, additional, Firpo, Roger, additional, Fonseca, Maria Victoria, additional, Font, Lluis, additional, Galante, Nicola, additional, GarcíaLópez, Ramon J., additional, Garczarczyk, Markus, additional, Gaug, Markus, additional, Goebel, Florian, additional, Hadasch, Daniela, additional, Hayashida, Masaaki, additional, Herrero, Artemio, additional, Hildebrand, Dorothée, additional, Höhne-Mönch, Daniel, additional, Hose, Jürgen, additional, Hsu, Ching Cheng, additional, Jogler, Tobias, additional, Kranich, Daniel, additional, Barbera, Antonio La, additional, Laille, Alvin, additional, Leonardo, Elvira, additional, Lindfors, Elina, additional, Lombardi, Saverio, additional, Longo, Francesco, additional, López, Donatella, additional, Lorenz, Eckart, additional, Majumdar, Pratik, additional, Maneva, Galina, additional, Mankuzhiyil, Nijil, additional, Mannheim, Karl, additional, Maraschi, Laura, additional, Mariotti, Mosé, additional, Martínez, Manel, additional, Mazin, Daniel, additional, Meucci, Mario, additional, Meyer, Markus, additional, Miranda, Jose Miguel, additional, Mirzoyan, Razmick, additional, Miyamoto, Hiroko, additional, Moldón, Javier, additional, Moles, Mariano, additional, Moralejo, Abelardo, additional, Nieto, Daniel, additional, Nilsson, Kari, additional, Ninkovic, Jelena, additional, Otte, Nepomuk, additional, Oya, Igor, additional, Paoletti, Riccardo, additional, Paredes, Josep M., additional, Pasanen, Mikko, additional, Pascoli, Donatella, additional, Pauss, Felicitas, additional, Pegna, Raffaello G., additional, Perez-Torres, Miguel A., additional, Persic, Massimo, additional, Peruzzo, Luigi, additional, Prada, Francisco, additional, Prandini, Elisa, additional, Puchades, Neus, additional, Reichardt, Ignasi, additional, Rhode, Wolfgang, additional, Ribó, Marc, additional, Rico, Javier, additional, Rissi, Michael, additional, Robert, Arnau, additional, Rügamer, Stefan, additional, Saggion, Antonio, additional, Saito, Takayuki Y., additional, Salvati, Marco, additional, Sánchez-Conde, Miguel, additional, Satalecka, Konstancja, additional, Scalzotto, Villi, additional, Scapin, Valeria, additional, Schweizer, Thomas, additional, Shayduk, Maxim, additional, Shore, Steve N., additional, Sidro, Nuria, additional, Sierpowska-Bartosik, Agnieszka, additional, Sillanpää, Aimo, additional, Sitarek, Julian, additional, Sobczynska, Dorota, additional, Spanier, Felix, additional, Stamerra, Antonio, additional, Schneebeli, Luisa Sabrina Stark, additional, Takalo, Leo, additional, Tavecchio, Fabrizio, additional, Temnikov, Petar, additional, Tescaro, Diego, additional, Teshima, Masahiro, additional, Tluczykont, Martin, additional, Torres, Diego F., additional, Turini, Nicola, additional, Vankov, Hristofor, additional, Wagner, Robert M., additional, Wittek, Wolfgang, additional, Zabalza, Victor, additional, Zandanel, Fabio, additional, Zanin, Roberta, additional, and Zapatero, Jordi, additional

Published
2009
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12. Prospects of Using Silicon Photomultipliers for the Astroparticle Physics Experiments EUSO and MAGIC.

Author

Nepomuk Otte, A., Dolgoshein, Boris, Hose, Jürgen, Kiemin, Sergei, Lorenz, Eckart, Lutz, Gerhard, Mirzoyan, Razmick, Popova, Elena, Richter, Rainer H., Struder, Lothar W. J., and Teshima, Masahiro

Subjects
PHOTOMULTIPLIERS, SILICON, PARTICLES (Nuclear physics), CHERENKOV radiation, NUCLEAR counters, PHOTONS, TELESCOPES, NUCLEAR physics, NUCLEAR science
Abstract

We discuss the silicon photomultiplier as a novel photon detector for the Major Atmospheric Gamma Imaging Cerenkov Telescope and the Extreme Universe Space Observatory. For these astroparticle experiments we pursue two different developments of the SiPM. One development is pursued at MEPhI, where prototypes are available. In the course of this paper we will describe some characteristics of these devices. The second development, which is using the back illumination principle is at present in its design phase. [ABSTRACT FROM AUTHOR]

Published
2006
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13. Suzaku and Multi-Wavelength Observations of OJ 287 during the Periodic Optical Outburst in 2007

Author

Seta, Hiromi, Isobe, Naoki, Tashiro, Makoto S., Yaji, Yuichi, Arai, Akira, Fukuhara, Masayuki, Kohno, Kotaro, Nakanishi, Kouichiro, Sasada, Mahito, Shimajiri, Yoshito, Tosaki, Tomoka, Uemura, Makoto, Anderhub, Hans, Antonelli, Lucio Angelo, Antoranz, Pedro, Backes, Michael, Baixeras, Carmen, Balestra, Silvia, Abel Barrio, Juan, Bastieri, Denis, Becerra Gonzalez, Josefa, Becker, Julia K., Bednarek, Wlodzimierz, Berger, Karsten, Bernardini, Elisa, Biland, Adrian, Bock, Rudolf K., Bonnoli, Giacomo, Bordas, Pol, Tridon, Daniela Borla, Bosch-Ramon, Valenti, Bose, Debanjan, Braun, Isabel, Bretz, Thomas, Britvitch, Ilia, Camara, Miguel, Carmona, Emiliano, Commichau, Sebastian, Luis Contreras, Jose, Cortina, Juan, Costado Dios, Ma Teresa, Covino, Stefano, Curtef, Valentin, Dazzi, Francesco, Angelis, Alessandro, Cea Del Pozo, Elsa, Los Reyes, Raquel, Lotto, Barbara, Maria, Michela, Sabata, Francesco, Delgado Mendez, Carlos, Dominguez, Alberto, Dorner, Daniela, Doro, Michele, Elsaesser, Dominik, Errando, Manel, Ferenc, Daniela, Fernandez, Enrique, Firpo, Roger, Victoria Fonseca, Maria, Font, Lluis, Galante, Nicola, Garcia Lopez, Ramon J., Garczarczyk, Markus, Gaug, Markus, Goebel, Florian, Hadasch, Daniela, Hayashida, Masaaki, Herrero, Artemio, Hildebrand, Dorothee, Hoehne-Moench, Daniel, Hose, Juergen, Hsu, Ching Cheng, Jogler, Tobias, Kranich, Daniel, La Barbera, Antonio, Laille, Alvin, Leonardo, Elvira, Lindfors, Elina, Lombardi, Saverio, Longo, Francesco, Lopez, Donatella, Lorenz, Eckart, Majumdar, Pratik, Maneva, Galina, Mankuzhiyil, Nijil, Mannheim, Karl, Maraschi, Laura, Mariotti, Mose, Martinez, Manel, Mazin, Daniel, Meucci, Mario, Meyer, Markus, Miguel Miranda, Jose, Mirzoyan, Razmick, Miyamoto, Hiroko, Moldon, Javier, Moles, Mariano, Moralejo, Abelardo, Daniel Nieto, Nilsson, Kari, Ninkovic, Jelena, Otte, Nepomuk, Oya, Igor, Paoletti, Riccardo, Paredes, Josep M., Pasanen, Mikko, Pascoli, Donatella, Pauss, Felicitas, Pegna, Raffaello G., Perez-Torres, Miguel A., Persic, Massimo, Peruzzo, Luigi, Prada, Francisco, Prandini, Elisa, Puchades, Neus, Reichardt, Ignasi, Rhode, Wolfgang, Ribo, Marc, Rico, Javier, Rissi, Michael, Robert, Arnau, Ruegamer, Stefan, Saggion, Antonio, Saito, Takayuki Y., Salvati, Marco, Sanchez-Conde, Miguel, Satalecka, Konstancja, Scalzotto, Villi, Scapin, Valeria, Schweizer, Thomas, Shayduk, Maxim, Shore, Steve N., Sidro, Nuria, Sierpowska-Bartosik, Agnieszka, Sillanpaa, Aimo, Sitarek, Julian, Sobczynska, Dorota, Spanier, Felix, Stamerra, Antonio, Schneebeli, Luisa Sabrina Stark, Takalo, Leo, Tavecchio, Fabrizio, Temnikov, Petar, Tescaro, Diego, Teshima, Masahiro, Tluczykont, Martin, Torres, Diego F., Turini, Nicola, Vankov, Hristofor, Wagner, Robert M., Wittek, Wolfgang, Zabalza, Victor, Zandanel, Fabio, Zanin, Roberta, Zapatero, Jordi, and Magic, Collaboration

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