Description
Cherenkov Detectors in Nuclear, Particle Physics and Astroparticle Physics; Photon Detection Techniques
Poster sessions Tuesday 4th and Wednesday 5th
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Dr Johann Marton (Stefan Meyer Institute)04/05/2010 10:15Photon detection for Cherenkov countersPosterSilicon-based photon sensors (SiPMs) working in the Geiger-mode represent an elegant solution for the the readout of particle detectors working at low-light levels like Cherenkov detectors. Especially the insensitivity for magnetic fields makes this kind of sensors suitable for modern detector systems in subatomic physics which are usually employing magnets for momentum resolution. On the...Go to contribution page
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Xavier Bertou (Centro Atomico Bariloche)04/05/2010 10:15Cherenkov detectors in astroparticle physicsPosterWater Cherenkov Detectors have the nice property of being mostly calorimeters for cosmic rays electrons and photons, while providing a clear signal for muons. At large energy deposited in the detector, they observe small extended air showers. This makes them interesting detectors to study the cosmic ray secondaries background. Using background histograms of the total energy deposited in...Go to contribution page
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Dr Antonios Leisos (Hellenic Open University)04/05/2010 10:15Cherenkov detectors in astroparticle physicsPosterWe report on a simulation study of the calibration potential offered by floating Extensive Air Shower (EAS) detector stations (HELYCON), operating in coincidence with a Very Large Volume Cherenkov Neutrino telescope. We describe strategies in order to investigate for possible systematic errors in reconstructing the direction of energetic muons as well as to determine the absolute...Go to contribution page
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Mme Elena Pavlovna Cherenkova (P.N.Lebedev Physical Institute of the Russian Academy of Sciences; Russia, Moscow, Leninskiy prospekt, 53)04/05/2010 10:15Pattern recognition and data analysisPosterName Pavel Cherenkov is known in physics as the name of author who discovered new emission and proposed to use the emission for particles properties detection. At the same time Pavel Cherenkov took part actively in international scientific and scientifically-organizational projects, in international social life. As international situation was changing, participation was held under variable...Go to contribution page
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Prof. Valentin Ivanov (Muons, Inc.)04/05/2010 10:15Photon detection for Cherenkov countersPosterWe have developed a theoretical method for calculating secondary electron emission (SEE) yields. The method uses Monte Carlo simulation, empirical theories, and close comparison to experiment, in order to parameterize the SEE yields of highly emissive materials for microchannel plates. We have successfully applied this method to bulk Al2O3, a highly emissive material as well as to thinly...Go to contribution page
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M. Thomas Conneely (University of Leicester and Photek LTD)04/05/2010 10:15Photon detection for Cherenkov countersPosterPhotek, in collaboration with the University of Leicester space research centre, are pursuing a number of R&D projects aimed at developing systems for detection of single photon events with time resolution of the order of 10 ps. This involves the development of new detectors and accompanying electronics, utilising the HPTDC and NINO chips developed at CERN. An overview of R&D efforts will be...Go to contribution page
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M. Thomas Krähenbühl (ETH Zurich)04/05/2010 10:15Cherenkov detectors in astroparticle physicsPosterGeiger-mode Avalanche Photo Diodes (G-APD) bear the potential to significantly improve the sensitivity of Imaging Air Cherenkov Telescopes (IACT). Therefore we are currently building the First G-APD Cherenkov Telescope (FACT) by refurbishing an old IACT with a mirror area of 9 square meters and construct a new, fine pixelized camera using novel G-APDs. The main goal is to evaluate the...Go to contribution page
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Prof. Valentin Ivanov (Muons, Inc.)04/05/2010 10:15Photon detection for Cherenkov countersPosterMicro channel plate (MCP) amplifiers are commonly used in detectors of fast time signals with a pico-second resolution. The main parameters of the MCP amplifier, such as the gain factor and time resolution are strongly dependent on the work regime of the device. The saturation effects take place for a high-level input signal. In our paper these effects have been studied numerically for large...Go to contribution page
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Dr Bayarto Lubsandorzhiev (Institute for Nuclear Research of RAS)04/05/2010 10:15Photon detection for Cherenkov countersPosterWe review large sensitive area photodetectors developed for Cherenkov neutrino arrays like neutrino telescopes - classical photomultipliers (PMTs) and hybrid phototubes (HPDs). We present results of studies of recently developed large sensitive area hemispherical PMTs including PMTs with high quantum efficiency photocathodes. We also present results of studies of new very fast scintillators...Go to contribution page
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Dr Serguei Vorobiov (LPTA UMR 5207 CNRS & UM2)04/05/2010 10:15Technological aspects of Cherenkov detectorsPosterThe European astroparticle physics community aims to design and build the next generation array of Imaging Atmospheric Cherenkov Telescopes (IACTs), that will benefit from the experience of the existing H.E.S.S. and MAGIC detectors and further expand the very-high energy astronomy domain. In order to gain an order of magnitude in sensitivity in the 10 GeV to > 100 TeV range, the Cherenkov...Go to contribution page
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Dr Oswald Siegmund (University of California)04/05/2010 10:15Photon detection for Cherenkov countersPosterMicrochannel plate devices are powerful detection devices for Cherenkov light, with good imaging and timing characteristics. However, currently the largest format devices available are of the order of 5cm, and these are expensive compared with photomultiplier tubes. One significant problem in covering large areas with such devices is both the cost, and the difficulty in fabricating large size...Go to contribution page
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Prof. Peter Krizan (University of Ljubljana and J. Stefan Institute)04/05/2010 10:15PosterOne of the candidates for the photon detector of the Belle II aerogel radiator RICH is the micro-channel plate photomultiplier tube (MCP-PMT). The MCP-PMT works very well in a high magnetic field of 1.5T. It shows a good performance to detect single photons with an excellent timing precision. In a 2GeV/c electron beam at KEK we have tested two tubes to investigate the photon yield and...Go to contribution page
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Dr oscar martinez (Universidad autonoma de puebla)04/05/2010 10:15Cherenkov detectors in astroparticle physicsPosterE. Ponce1, G. Garipov2, B. Khrenov2, P.Klimov2, O.Martinez1, M.Panasyuk2, H. Salazar1. 1 BUAP, Puebla, Mexico. 2 Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia. Abstract Recent measurements of the UV atmosphere glow have reported bright and fast Transient Luminous Events (TLE) in the atmosphere. Some of TLE features related with its space image and...Go to contribution page
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Dr Oleg Kalekin (Erlangen Centre for Astroparticle Physics)04/05/2010 10:15Cherenkov detectors in astroparticle physicsPosterThe KM3NeT project aims to design and to construct at least a cubic kilometre scale neutrino telescope in the Mediterranean Sea. The main task is to instrument this deep-sea water volume with optical modules, each housing one or several photomultiplier tubes (PMTs). 3-, 8- and 10-inch PMTs from ET Enterprises, Hamamatsu and MELZ-FEU have been investigated as candidates for the...Go to contribution page
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Joao Veloso (I3N, Physics Department - University of Aveiro)04/05/2010 10:15Photon detection for Cherenkov countersPosterIon Back Flow (IBF) in gaseous detectors presents a drawback in many applications, such as TPCs, RICH detectors and gaseous photosensors, among others. Following the success of the MHSP operating in flipped reverse mode, which reached an IBF reduction approaching 10^-4, a new concept based on this one though with optimized geometry and aiming applications needing large detection areas, was...Go to contribution page