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RISS 인기검색어
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- 저자 : Hauptman, J. (검색결과 3 건)
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Tests of a dual-readout fiber calorimeter with SiPM light sensors
Antonello, M.,Caccia, M.,Cascella, M.,Dunser, M.,Ferrari, R.,Franchino, S.,Gaudio, G.,Hall, K.,Hauptman, J.,Jo, H.,Kang, K.,Kim, B.,Lee, S.,Lerner, G.,Pezzotti, L.,Santoro, R.,Vivarelli, I.,Ye, R.,Wig Elsevier 2018 Nuclear Instruments & Methods in Physics Research. Vol.899 No.-
<P><B>Abstract</B></P> <P>In this paper, we describe the first tests of a dual-readout fiber calorimeter in which silicon photomultipliers are used to sense the (scintillation and Čerenkov) light signals. The main challenge in this detector is implementing a design that minimizes the optical crosstalk between the two types of fibers, which are located very close to each other and carry light signals that differ in intensity by about a factor of 60. The experimental data, which were obtained with beams of high-energy electrons and muons as well as in lab tests, illustrate to what extent this challenge was met. The Čerenkov light yield, a limiting factor for the energy resolution of this type of calorimeter, was measured to be about twice that of the previously tested configurations based on photomultiplier tubes. The lateral profiles of electromagnetic showers were measured on a scale of millimeters from the shower axis and significant differences were found between the profiles measured with the scintillating and the Čerenkov fibers.</P>
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Online System for Normalizing Data Acquired by the Fermilab DO Experiment
박성근,홍성종,Elizabeth Gallas,Gregory Snow,Heidi Schellman,Jaewon Park,Jason Stein,John Hauptman,이경세,Michael Begel,Sahal Yacoob,Sehwook Lee,Sung Hwan Ahn,Tae Jeong Kim,Tim Andeen,Vladimir Sirontenko 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
The DØ experiment uses a dedicated data acquisition system to collect, archive, monitor, and distribute the information necessary to normalize triggered data for physics analyses. This system has been in place since the beginning of Run 2 of the Fermilab Tevatron collider in 2001 and provides real-time feedback on the instantaneous and triggered luminosities in the DØ and Tevatron control rooms, as well as the status reports needed for smooth operation of the experiment. This paper describes the architecture and the implementation of this system.T
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Hadron detection with a dual-readout fiber calorimeter
Lee, S.,Cardini, A.,Cascella, M.,Choi, S.,Ciapetti, G.,Ferrari, R.,Franchino, S.,Fraternali, M.,Gaudio, G.,Ha, S.,Hauptman, J.,Kim, H.,Lanza, A.,Li, F.,Livan, M.,Meoni, E.,Park, J.,Scuri, F.,Sill, A. Elsevier 2017 Nuclear instruments & methods in physics research. Vol.866 No.-
<P><B>Abstract</B></P> <P>In this paper, we describe measurements of the response functions of a fiber-based dual-readout calorimeter for pions, protons and multiparticle “jets” with energies in the range from 20 to 180 GeV. The calorimeter uses lead as absorber material and has a total mass of 1350 kg. It is complemented by leakage counters made of scintillating plastic, with a total mass of 500 kg. The effects of these leakage counters on the calorimeter performance are studied as well. In a separate section, we investigate and compare different methods to measure the energy resolution of a calorimeter. Using only the signals provided by the calorimeter, we demonstrate that our dual-readout calorimeter, calibrated with electrons, is able to reconstruct the energy of proton and pion beam particles to within a few percent at all energies. The fractional widths of the signal distributions for these particles ( σ ∕ E ) scale with the beam energy as 30 % ∕ E , without any additional contributing terms.</P>
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