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Search Results: 1 - 10 of 200638 matches for " P. Kuusiniemi "
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Underground multi-muon experiment EMMA
P. Kuusiniemi, L. Bezrukov, T. Enqvist, H. Fynbo, L. Inzhechik, P. Jones, J. Joutsenvaara, T. Kalliokoski, J. Karjalainen, K. Loo, B. Lubsandorzhiev, T. Monto, V. Petkov, T. R ih , J. Sarkamo, M. Slupecki, W.H. Trzaska,A. Virkaj rvi
Astrophysics and Space Sciences Transactions (ASTRA) , 2011, DOI: 10.5194/astra-7-93-2011
Abstract: EMMA is a new experiment designed for cosmic-ray composition studies around the knee energy operating at the shallow depth underground in the Pyh salmi mine, Finland. The array has sufficient coverage and resolution to determine the multiplicity, the lateral density distribution and the arrival direction of high-energy muons on an event by event basis. Preliminary results on the muon multiplicity extracted using one detector station of the array are presented.
The features of electronics structure of the multichannel scintillation module for the EMMA experiment
V. Volchenko, G. Volchenko, E. Akhrameev, L. Bezrukov, I. Dzaparova, T. Enqvist, L. Inzhechik, A. Izmaylov, J. Joutsenvaara, M. Khabibullin, A. Khotjantsev, Yu. Kudenko, P. Kuusiniemi, B. Lubsandorzhiev, O. Mineev, V. Petkov, R. Poleshuk, B. Shaibonov, J. Sarkamo, A. Shaykhiev, W. Trzaska, A. Yanin,N. Yershov
Astrophysics and Space Sciences Transactions (ASTRA) , 2011, DOI: 10.5194/astra-7-171-2011
Abstract: A brief description of the developed structural electric diagrams of 16-channel scintillation module for the underground EMMA experiment, the basic characteristics and parameters of the electrical diagrams of this module are presented. Multi-pixel photodiodes operating in a limited Geiger mode are used for photoreadout of the scintillator detectors in 16-channel scintillation module. The method of the automatic tuning of the photosensors gain based on the stabilization of an average counting rate of the scintillation detectors from gamma rays of a natural radioactive background is described.
Geiger mode APD's for the underground cosmic ray experiment EMMA
L. Bezrukov,K. Butin,I. Davitashvili,I. Dzaparova,T. Enqvist,H. Fynbo,L. Golyshkin,Zh. Guliev,L. Inzhechik,A. Izmaylov,J. Joutsenvaara,M. Khabibullin,A. Khotjantsev,Yu. Kudenko,P. Kuusiniemi,B. Lubsandorzhiev,O. Mineev,V. Petkov,R. Poleshuk,T. Raiha,J. Sarkamo,B. Shaibonov,A. Shaykhiev,W. Trzaska,G. Volchenko,V. Volchenko,A. Yanin,N. Yershov,D. Zykov
Physics , 2009,
Abstract: Multi-pixel photodiodes operating in a limited Geiger mode will be used for photoreadout of scintillator counters in underground cosmic ray experiment EMMA. Main parameters of photodiodes and the performance of EMMA scintillator counters are presented.
Multichannel Data Acquisition System for Scintillation Detectors of the Emma Experiment
A. F. Yanin,V. I. Volchenko,L. B. Bezrukov,I. M. Dzaparova,T. Enqvist,H. Fynbo,Zh. Sh. Guliev,L. V. Inzhechik,J. Joutsenvaara,Y. G. Kudenko,P. Kuusiniemi,B. K. Lubsandorzhiev,O. V. Mineev,L. Olanter?,V. B. Petkov,T. R?ih?,J. Sarkamo,M. Slupecki,W. Trzaska,G. V. Volchenko
Physics , 2011,
Abstract: The multichannel data acquisition system is intended to be used in the EMMA experiment studying cosmic rays. The array will be in the Pihasalmi mine (central Finland) at a depth of about 85 m. The scintillator counters (SC-1) of the array are cast plastic scintillators with a wavelength of each SC-1 detector is 12.2{\times}12.2{\times}3.0 cm^3. 16 SC-1 detectors are placed in the metal case of 50.0{\times}50.0{\times}13.0 cm^3 dimension. Each case, called SC-16 detector, contains electronics of preliminary processing of signals and operating mode stabilization. The whole of the array will contain 96 detectors SC-16. It will make 1536 channels placed in three planes (48+24+24 detectors). The array will allow us to measure the time of flight of particles between SC-16 detectors and the coordinates of SC-1 fired detectors. This paper presents the function diagram of data acquisition system that includes electronic of detectors, the hodoscope pulse channels, the trigger block and VME blocks.
On the level of background in underground muon measurements with plastic scintillator counters
V. I. Volchenko,G. V. Volchenko,E. V. Akhrameev,L. B. Bezrukov,I. M. Dzaparova,I. Sh. Davitashvili,T. Enqvist,H. Fynbo,Zh. Sh. Guliev,L. V. Inzhechik,A. O. Izmaylov,J. Joutsenvaara,M. M. Khabibullin,A. N. Khotjantsev,Yu. G. Kudenko,P. Kuusiniemi,B. K. Lubsandorzhiev,O. V. Mineev,V. B. Petkov,R. V. Poleshuk,B. A. M. Shaibonov,J. Sarkamo,A. T. Shaykhiev,W. Trzaska,A. F. Yanin,N. V. Yershov
Physics , 2008,
Abstract: In this short note we present results of background measurements carried out with a polystyrene based cast plastic 12.0x12.0x3.0 cm^3 size scintillator counter with a wavelength shifting fibre and a multi-pixel Geiger mode avalanche photodiode readout in the Baksan underground laboratory at a depth of 200 meters of water equivalent. The total counting rate of the scintillator counter measured at this depth and at a threshold corresponding to ~0.37 of a minimum ionizing particle is approximately 1.3 Hz.
Multi-pixel Geiger-mode avalanche photodiode and wavelength shifting fibre readout of plastic scintillator counters of the EMMA underground experiment
E. V. Akhrameev,L. B. Bezrukov,I. M. Dzaparov,I. Sh. Davitashvili,T. Enqvist,H. Fynbo,Zh. Sh. Guliev,L. V. Inzhechik,A. O. Izmaylov,J. Joutsenvaara,M. M. Khabibullin,A. N. Khotjantsev,Yu. G. Kudenko,P. Kuusiniemi,B. K. Lubsandorzhiev,O. V. Mineev,L. Olantera,V. B. Petkov,R. V. Poleshuk,T. Raiha,B. A. M. Shaibonov,J. Sarkamo,A. T. Shaikhiev,W. Trzaska,V. I. Volchenko,G. V. Volchenko,A. F. Yanin,N. V. Yershov
Physics , 2009, DOI: 10.1016/j.nima.2009.05.171
Abstract: The results of a development of a scintillator counter with wavelength shifting (WLS) fibre and a multi-pixel Geiger-mode avalanche photodiode readout are presented. The photodiode has a metal-resistor-semiconductor layered structure and operates in the limited Geiger mode. The scintillator counter has been developed for the EMMA underground cosmic ray experiment.
Large underground, liquid based detectors for astro-particle physics in Europe: scientific case and prospects
Autiero, D.;Aysto, J.;Badertscher, A.;Bezrukov, L.;Bouchez, J.;Bueno, A.;Busto, J.;Campagne, J. -E.;Cavata, Ch.;Chaussard, L.;de Bellefon, A.;Declais, Y.;Dumarchez, J.;Ebert, J.;Enqvist, T.;Ereditato, A.;von Feilitzsch, F.;Perez, P. Fileviez;Goger-Neff, M.;Gninenko, S.;Gruber, W.;Hagner, C.;Hess, M.;Hochmuth, K. A.;Kisiel, J.;Knecht, L.;Kreslo, I.;Kudryavtsev, V. A.;Kuusiniemi, P.;Lachenmaier, T.;Laffranchi, M.;Lefievre, B.;Lightfoot, P. K.;Lindner, M.;Maalampi, J.;Maltoni, M.;Marchionni, A.;Undagoitia, T. Marrodan;Marteau, J.;Meregaglia, A.;Messina, M.;Mezzetto, M.;Mirizzi, A.;Mosca, L.;Moser, U.;Muller, A.;Natterer, G.;Oberauer, L.;Otiougova, P.;Patzak, T.;Peltoniemi, J.;Potzel, W.;Pistillo, C .;Raffelt, G. G.;Rondio, E.;Roos, M.;Rossi, B.;Rubbia, A.;Savvinov, N.;Schwetz, T.;Sobczyk, J.;Spooner, N. J. C.;Stefan, D.;Tonazzo, A.;Trzaska, W.;Ulbricht, J.;Volpe, C.;Winter, J.;Wurm, M.;Zalewska, A.;Zimmermann, R.
High Energy Physics - Phenomenology , 2007, DOI: 10.1088/1475-7516/2007/11/011
Abstract: This document reports on a series of experimental and theoretical studies conducted to assess the astro-particle physics potential of three future large-scale particle detectors proposed in Europe as next generation underground observatories. The proposed apparatus employ three different and, to some extent, complementary detection techniques: GLACIER (liquid Argon TPC), LENA (liquid scintillator) and MEMPHYS (\WC), based on the use of large mass of liquids as active detection media. The results of these studies are presented along with a critical discussion of the performance attainable by the three proposed approaches coupled to existing or planned underground laboratories, in relation to open and outstanding physics issues such as the search for matter instability, the detection of astrophysical- and geo-neutrinos and to the possible use of these detectors in future high-intensity neutrino beams.
The LAGUNA design study- towards giant liquid based underground detectors for neutrino physics and astrophysics and proton decay searches
LAGUNA Collaboration,D. Angus,A. Ariga,D. Autiero,A. Apostu,A. Badertscher,T. Bennet,G. Bertola,P. F. Bertola,O. Besida,A. Bettini,C. Booth,J. L. Borne,I. Brancus,W. Bujakowsky,J. E. Campagne,G. Cata Danil,F. Chipesiu,M. Chorowski,J. Cripps,A. Curioni,S. Davidson,Y. Declais,U. Drost,O. Duliu,J. Dumarchez,T. Enqvist,A. Ereditato,F. von Feilitzsch,H. Fynbo,T. Gamble,G. Galvanin,A. Gendotti,W. Gizicki,M. Goger-Neff,U. Grasslin,D. Gurney,M. Hakala,S. Hannestad,M. Haworth,S. Horikawa,A. Jipa,F. Juget,T. Kalliokoski,S. Katsanevas,M. Keen,J. Kisiel,I. Kreslo,V. Kudryastev,P. Kuusiniemi,L. Labarga,T. Lachenmaier,J. C. Lanfranchi,I. Lazanu,T. Lewke,K. Loo,P. Lightfoot,M. Lindner,A. Longhin,J. Maalampi,M. Marafini,A. Marchionni,R. M. Margineanu,A. Markiewicz,T. Marrodan-Undagoita,J. E. Marteau,R. Matikainen,Q. Meindl,M. Messina,J. W. Mietelski,B. Mitrica,A. Mordasini,L. Mosca,U. Moser,G. Nuijten,L. Oberauer,A. Oprina,S. Paling,S. Pascoli,T. Patzak,M. Pectu,Z. Pilecki,F. Piquemal,W. Potzel,W. Pytel,M. Raczynski,G. Rafflet,G. Ristaino,M. Robinson,R. Rogers,J. Roinisto,M. Romana,E. Rondio,B. Rossi,A. Rubbia,Z. Sadecki,C. Saenz,A. Saftoiu,J. Salmelainen,O. Sima,J. Slizowski,K. Slizowski,J. Sobczyk,N. Spooner,S. Stoica,J. Suhonen,R. Sulej,M. Szarska,T. Szeglowski,M. Temussi,J. Thompson,L. Thompson,W. H. Trzaska,M. Tippmann,A. Tonazzo,K. Urbanczyk,G. Vasseur,A. Williams,J. Winter,K. Wojutszewska,M. Wurm,A. Zalewska,M. Zampaolo,M. Zito
Physics , 2009,
Abstract: The feasibility of a next generation neutrino observatory in Europe is being considered within the LAGUNA design study. To accommodate giant neutrino detectors and shield them from cosmic rays, a new very large underground infrastructure is required. Seven potential candidate sites in different parts of Europe and at several distances from CERN are being studied: Boulby (UK), Canfranc (Spain), Fr\'ejus (France/Italy), Pyh\"asalmi (Finland), Polkowice-Sieroszowice (Poland), Slanic (Romania) and Umbria (Italy). The design study aims at the comprehensive and coordinated technical assessment of each site, at a coherent cost estimation, and at a prioritization of the sites within the summer 2010.
Hybrid Fuzzy Controller Based Frequency Regulation in Restructured Power System  [PDF]
P. Anitha, P. Subburaj
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.76065
Abstract: This paper discusses the implementation of Load Frequency Control (LFC) in restructured power system using Hybrid Fuzzy controller. The formulation of LFC in open energy market is much more challenging; hence it needs an intelligent controller to adapt the changes imposed by the dynamics of restructured bilateral contracts. Fuzzy Logic Control deals well with uncertainty and indistinctness while Particle Swarm Optimization (PSO) is a well-known optimization tool. Abovementioned techniques are combined and called as Hybrid Fuzzy to improve the dynamic performance of the system. Frequency control of restructured system has been achieved by automatic Membership Function (MF) tuned fuzzy logic controller. The parameters defining membership function has been tuned and updated from time to time using Particle Swarm Optimization (PSO). The robustness of the proposed hybrid fuzzy controller has been compared with conventional fuzzy logic controller using performance measures like overshoot and settling time following a step load perturbation. The motivation for using membership function tuning using PSO is to show the behavior of the controller for a wide range of system parameters and load changes. Error based analysis with parametric uncertainties and load changes is tested on a two-area restructured power system.
Integral Performance Criteria Based Analysis of Load Frequency Control in Bilateral Based Market  [PDF]
P. Anitha, P. Subburaj
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.76086
Abstract: Performance index based analysis is made to examine and highlight the effective application of Particle Swarm Optimization (PSO) to optimize the Proportional Integral gains for Load Frequency Control (LFC) in a restructured power system that operates under Bilateral based policy scheme. Various Integral Performance Criteria measures are taken as fitness function in PSO and are compared using overshoot, settling time and frequency and tie-line power deviation following a step load perturbation (SLP). The motivation for using different fitness technique in PSO is to show the behavior of the controller for a wide range of system parameters and load changes. Error based analysis with parametric uncertainties and load changes are tested on a two-area restructured power system. The results of the proposed PSO based controller show the better performance compared to the classical Ziegler-Nichols (Z-N) tuned PI andFuzzy Rule based PI controller.
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