Margherita Tenconi
(Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CNRS and Université Paris-Sud, F-91405 Orsay, France)
6/14/12, 3:30 PM
Poster
Bolometric light detectors provide an efficient method to collect light signals at small thresholds in cryogenic experiments and are being exploited in next-generation experiences for the search of Neutrinoless Double Beta Decay. Sample light detecting bolometers made up of a ultra-pure Ge slab read by a phonon sensor thermistor were assembled and tested at very low temperatures, below 30 mK;...
Claudio Gotti
(Universita e INFN (IT))
6/14/12, 3:30 PM
Poster
The RICH upgrade in LHCb requires a new front-end electronics for the detector readouts at the LHC frequency of 40 MHz. In particular the photon detector currently used in the RICH features an embedded front-end elctronics inside the tube. This calls for a replacement of readout electronics that involves the alteration of the whole HPD. On the other hand, the Milano-Bicocca group chose to...
Dr
Johannes Breuer
(Siemens)
6/14/12, 3:30 PM
Poster
A detailed model for a Monte-Carlo simulation of the response of Silicon Photomultipliers (SiPMs) is presented. Comparisons with experimental data show a good agreement. The model allows investigating which SiPM-specific features affect energy and time resolution. Furthermore, the simulation is an important tool for the optimization of a detector layout and the design of read-out schemes.
Stefano Levorato
(INFN Trieste)
6/14/12, 3:30 PM
Poster
Architectures based on multiple layers of THick-Gas Electron Multipliers (THGEM) represent a possible answer to the quest for novel gaseous counters with single photon detection capability able to overcome all the limitations of the present generation of gaseous photon detectors.
A systematic R&D programme has been performed to achieve a deep understanding of the THGEM characteristics and to...
Thomas Conneely
(University of Leicester)
6/14/12, 3:30 PM
Poster
We present results from a photon-counting microchannel plate (MCP) imaging detector using the Capacitive Division Image Readout (C-DIR), designed to provide moderate position resolution (of the order of 100x100 pixels^2), with timing resolution of 25 ps and a maximum event rate of 10 MHz, limited by microchannel plate count rate saturation. The NINO and HPTDC ASIC combination, developed at...
Dr
Elena Popova
(MEPhI)
6/14/12, 3:30 PM
Poster
The TUNKA EAS Cherenkov experiment operates in the Tunka Valley in Siberia. The main physics goals of the experiment are measurements of energy spectrum and mass composition of primary cosmic rays in the energy region of 10^15-10^18 eV and detection of high energy gamma-rays from supernova remnants with energy threshold of 20-50TeV. New 8" hemispherical PMTs from Hamamatsu and ET have been...
Dr
Luigi Cosentino
(LNS - INFN)
6/14/12, 3:30 PM
Poster
In our measurements at LNS-INFN we proved that by coupling two Silicon Photomultipliers on both the sides of a LYSO scintillator finger, with suitable surfaces treatment, allow to achieve optimal performances in terms of time and spatial resolution, thus strongly supporting the feasibility of a high resolution TOF-PET probe. With a detector element of 1.5mm x 1.5mm x 10mm, we have achieved...
Ms
Paola Avella
(University of Surrey)
6/14/12, 3:30 PM
Poster
A variety of modern physics applications, ranging from medical to high energy physics, require very fast light sensors, characterised by a response in the range of tens of picoseconds. Silicon Photomultipliers (SiPMs, or Multi pixel photon counters (MPPCs)) are a relatively new solid-state pixellated detector type that satisfies this requirement, with the advantage of being compact, cheap,...
Mr
Lukas Gruber
(Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Vienna, Austria)
6/14/12, 3:30 PM
Poster
The Silicon Photomultiplier (SiPM) is an extremely versatile photo detector which can be used in various fields ranging from astrophysics, particle and nuclear physics to medical imaging. One of the important parameters of a photo sensor is the performance in high rate environments. In order to characterize the rate capability and the double hit resolution of SiPMs, we performed an...
Mr
Vincent Chaumat
(In2p3 LAL), Dr
Véronique Puill
(In2p3 LAL)
6/14/12, 3:30 PM
Poster
The absolute measurement of the Photo Detection Efficiency (PDE) of a SiPM over the whole visible range using continuous light is not a straightforward task as it requires the accurate determination of the detector gain. The SiPM gain given by the producer does not take into account all the secondary effects (cross-talks, after-pulses events), which leads to an overestimation of the PDE.
To...
Georgios Bourlis
(Hellenic Open University)
6/14/12, 3:30 PM
Poster
KM3NeT (km3 Neutrino Telescope) is planned to be a deep-sea multidisciplinary observatory in the Mediterranean Sea that will provide innovative science opportunities spanning Astroparticle Physics and Earth and Sea Science. KM3NeT will consist of several hundreds of vertical structures, which carry photo-sensors and devices for calibration and environmental measurements. The photo-sensor unit...
Dr
Anatoly Ronzhin
(FNAL)
6/14/12, 3:30 PM
Poster
A short report of our Fermilab activity with SiPms timing.
Andrey Sokolov
(Budker Institute of Nuclear Physics)
6/14/12, 3:30 PM
Poster
We compare the performances of different types of Geiger-mode APDs (GAPDs or SiPMs), manufactured by CPTA company, at cryogenic temperature, namely at 87 K. Noise rate, gain characteristics and signal shapes were measured, both at room and cryogenic temperature. Four types of GAPDs were investigated, having an active area of 1x1, 2.1x2.1, 2.5x2.5, and 3x3 mm2. The best performance showed the...
Mr
Mikhail Barnyakov
(Budker Institute of Nuclear Physics)
6/14/12, 3:30 PM
Poster
Photomultiplier tubes (PMT) based on microchannel plates (MCP) found a number of applications in colliding beam experiments at Budker Institute of Nuclear Physics (Novosibirsk, Russia). We report on the degradation of MCP PMT main characteristics after 8 years of operation in the threshold Cherenkov ASHIPH counters of the KEDR experiment at e+e- collider VEPP-4M.
The photocathode aging in MCP...
Prof.
Peter Hobson
(Brunel University (GB))
6/14/12, 3:30 PM
Poster
Vacuum Phototriodes (VPTs) are radiation resistant photodetectors, designed to operate in a strong quasi-axial magnetic field. This paper reports the long and short term changes in response of production vacuum phototriodes to pulsed light for devices installed in the CMS experiment at the CERN LHC. Both long and short term dynamic effects occur because of pulse rate changes during LHC...
