Modern tasks of very high energy gamma-ray astronomy and astrophysics require the effective and secure record of PMT signals from EAS Cherenkov lighting in the wide energy range from hundred GeV up to some hundred TeV, thus the more than 1000 dynamic range and low noise electronics are required for these purposes. Here we present the modern multi-channel analog-to-digital converter BPA-8...
The basis of Experimental complex NEVOD located in MEPhI is the Cherenkov water detector NEVOD with volume of 2000 m^3 equipped with a dense spatial lattice of quasi-spherical modules (QSMs, 91 in total). Each module consists of six FEU-200 PMTs with flat photocathodes directed along the axes of the orthogonal coordinate system. Cascade showers with energies of 100 - 500 GeV were generated by...
Silicon photomultipliers are an interesting alternative sensor of single photons. One of their biggest disadvantages is their huge background and sensitivity to neutron irradiation. The first one can be overcome by using a narrow time window in an analysis or during data acquisition. To maximize their signal to the noise a light collection system can be used which collects the photons from a...
The talk is devoted to the currently being developed procedure of charged particle identification with the multilayer liquid Xenon calorimeter of the CMD-3 detector. The procedure uses the boosted decision trees classification method with specific energy losses of charged particles as input variables. The efficiency of the procedure is illustrated by an example of the selection of the events...
New runs of the Large Hadron Collider and next generation of colliding
experiments with increased luminosity will require an unprecedented
amount of simulated events to be produced. This would bring an extreme
challenge to the computing resources. Thus new approaches to events
generation and simulation of detector responses are needed. Cherenkov
detectors, being relatively slow to simulate,...
The Latin American Giant Observatory (LAGO) is composed by a network of water Cherenkov detectors installed in the Andean region at various latitudes, from Sierra Negra in M\'exico 18$^{\circ}$ 59' N to the Antarctic Peninsula 64$^{\circ}$ 14'S 56$^{\circ}$ 38' O and altitudes from Lima, Peru at 20 m a.s.l. to Chacaltaya, Bolivia at 5400 m a s.l. The detectors of the network are built on the...
The Aerogel Ring Imaging CHerenkov (ARICH) counter provides particle identification of charged kaons and pions at the endcap of the Belle II detector at the SuperKEKB the asymmetric electron-positron collider in KEK. ARICH consists of silica aerogel radiators, an expansion volume and Hybrid Avalanche Photo-Detectors (HAPD) as photodetectors. Cherenkov photons are radiated when a charged...
A number of small-size photomultipliers have been developed by collaboration of INR RAS and MELZ-FEU for large-scale astroparticle physics experiments in particular for neutrino, gamma-astronomy and cosmic ray physics experiments. The developed photomultipliers are of different sizes and optimized for use in Cherenkov and scintillation detectors. The photomultipliers are of different sizes and...
The Compressed Baryonic Matter (CBM) experiment at the future FAIR complex will investigate the phase diagram of strongly interacting matter at high baryon density and moderate temperatures in A+A collisions from 2-11 AGeV at the SIS 100 accelerator setup.
One of the key detector components foreseen to cope with the CBM physics program is the RICH detector, providing efficient and clean...
We developed a number of LED drivers based on fast blue and UV LEDs. The drivers are inexpensive, robust and simple in operation. They can imitate well Cherenkov and scintillation light pulses. The drivers can be used for calibration purposes in Cherenkov and scintillation detectors. For Cherenkov detectors the fastest LED drivers are used, their light pulses width is less than 1 ns (fwhm) and...
In the forward end-cap of the Belle II spectrometer, the proximity focusing RICH with aerogel radiator will be used for charged particle identification. The detector, consisting of 4~cm aerogel radiator, 16~cm expansion volume and a photon detector plane with 420 Hybrid Avalanche Photo Detectors is mounted in a very confined space between central drift chamber and electromagnetic calorimeter,...
The Compact High Energy Camera (CHEC) is a focal plane camera designed for two mirror Schwarzschild-Couder design Imaging Air Cherenkov Telescopes (IACT) such as the SST-2M variants on the Cherenkov Telescope Array (CTA). It utilises a 2048 pixel array of silicon photomultipliers (SiPM) arranged in thirty-two 8 x 8 pixel tiles. Each detector tile is instrumented with a front-end electronics...
Fully integrated digital readout, pulse analysis, extraction of time and charge, signal alignment, multiplicity analysis and trigger generation electronics have been developed for the new Cherenkov-based Fast Interaction Trigger (FIT) for the upgrade of the ALICE detector at LHC,CERN. FIT will also serve as the main luminometer, collision time, multiplicity, centrality, and reaction plane...
This work presents performance and characteristics for detectors based on developed in NRC «Kurchatov Institute – IHEP» photomultipliers with distant photocathode (FEU-KS) and polystyrene-based scintillators with 0.5 – 1 mm thickness and up to 200 mm width.
Photomultiplier FEU-KS is a tubular glass envelope 40 mm diameter and be-alkaline photocathode 15200 mm2 size, 200 mm length dynodes...
The HADES and CBM experiment both employ gaseous RICH detectors for high performance electron identification. Currently, the HADES RICH detector is undergoing an upgrade of its photodetector in order to improve the performance for future measurements at SIS 18 and SIS 100 at GSI/ FAIR. Both RICH detectors will share the same H12700 MAPMTs from Hamamatsu and will use the same FPGA based readout...
An experiment on the measurements of the Cherenkov light yield of inclined cosmic ray muon bundles in water is being conducted at the Experimental complex NEVOD (MEPhI). The total number of Cherenkov photons is nearly proportional to the muon energy deposit (including secondary particles and cascades from them) within the detector volume. Since in the muon energy range above a hundred GeV the...
In this work we show the neutron detection capabilities of a water Cherenkov
detector (WCD). The experiments presented here were performed using a
simple WCD with a single photomultiplier tube (PMT) and a $^{252}$Cf
neutron source. We compared the use of pure water and water with non
contaminant additives as the detection volume, while explore different
neutron moderators and shield...
Gaseous radiators are required for high momenta hadron PID, where limited length of the radiator compatible with a collider experiment is the key challenge. Selecting photon wavelength in far UltraViolet (UV) domain, around 120 nm, is an effective option to increase number of detectable photons: here the Cherenkov photon rate is higher. In this domain, gaseous photodetectors with Cesium Iodide...
The Time-Of-Propagation counter is a new particle identification (PID) device which was introduced by the Belle II experiment, an upgrade of the Belle experiment. The counter is based on a novel idea of extracting Cherenkov ring information using precise timing information. This feature enables significant improvement of PID performance and a compact detector system, allowing more space for...
The Taiga experiment at Tunka valley near Baikal is heading with new scintillation detector stations named Taiga-Muon, for advanced study of astroparticle. The realistic model of experiment was created by using GEANT4 software package. The Monte Carlo simulation of experiment is done with Corsika and Geant4, with the help additional libraries FLUKA, COAST. The extensive air showers of primary...
The near UV background level at the atmosphere has several sources. In order to evaluate the possibility to detect ultra high energy cosmic ray fluorescence signals, it is necessary to measure and monitor this UV background level. Study of space-time development of UV background level and events presented is suggested by Garipov-Khrenov in 1994-1995. By that, we construct a new fast imaging...
Approaching the end of the LHC Run 2 period (2015-2018), the ALICE High Momentum Particle IDentification (HMPID) detector, based on RICH counters, is on hold for operating at the High Luminosity LHC Run 3 period (HL-LHC 20120-2023) when the collider will provide up to 50 kHz of Pb-Pb collision rate at √𝑠𝑁𝑁 = 5.5 TeV.
The upgraded ALICE detector will be able to read out all interactions and...
The LHCb experiment has collected data corresponding to 6.9 fb-1 of integrated luminosity since 2010 and the two RICH detectors have been essential for most of the LHCb physics programme. Preparations are underway to install an upgraded RICH detector so that from 2021 onwards LHCb can collect data corresponding to 5 fb-1 of integrated luminosity per year in order to improve the statistical...
Problems of registration of Cherenkov radiation using photomultiplier tubes (PMTs) with flat and hemispherical photocathodes are considered. Configurations of several PMTs with flat photocathodes allow to design a module that has the properties of spherical PMT. Besides the independence of its response on the direction of incident Cherenkov radiation, such quasi-spherical module (QSM) allows...
The Aerogel Ring-Imaging Cherenkov detector (ARICH) was developed to provide a particle identification in the forward endcap of Belle II detector at a SuperKEKB electron–positron collider at the High Energy Accelerator Research Organization (KEK), Japan. It is used to identify charged $\pi $ and K mesons at momenta between 0.5 and 4.0 GeV/c. The ARICH system is a proximity-focusing RICH...
We present the concept of a single-photon imager capable of detecting up to 10$^9$ photons per second with simultaneous measurement of position ($<$10$\mu$m resolution) and time (few tens of picosecond resolution) for each individual photon over an active area of 7 cm$^2$. The detector is based on a “hybrid” concept: a vacuum tube, with a transparent input window on which a suitable...
The LHCb RICH system will undergo major modifications for the LHCb Upgrade during the Long Shutdown 2 of the LHC, and the current photon detectors will be replaced by Multi Anode PMTs. The operating conditions of the upgraded experiment puts forth significant requirements onto the MaPMTs in terms of their performance, durability & reliability. Presented is an overview of the testing facilities...
Cherenkov electromagnetic calorimeter (ECAL)is being developed to complement the dilepton spectrometer HADES currently operating at SIS18 accelerator (GSI Darmstadt, Germany). Later itwill be used at HADES@FAIR experiments. Neutral meson production in heavy ion collisions and detection of photons from strange resonances in elementary and heavy ion reactionswill be measured with this...
Aerogel for different types of Cherenkov detectors is produced by a collaboration of Budker Institute of Nuclear Physics and Boreskov Institute of Catalysis during more than two decades. Until recently, only the production of two sizes was possible in large numbers: 50x50 and 115x115 $mm^2$.
This work is devoted to the development of the production technology of large scale aerogel radiators...
The article contains interesting details of the design and implementation of the experiment at significant stages, allowing to more accurately represent the research character of the young graduate student PA. Cherenkov, contribution to the experimental work of its leader, SI. Vavilov, the creative atmosphere of the FIAN of that time. A short history of awarding the Nobel Prize for...
