http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Franchino, S. (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Fiber and crystals dual readout calorimeters
Cascella, Michele,Franchino, Silvia,Lee, Sehwook World Scientific 2016 International Journal of Modern Physics A Vol.31 No.33
<P> The RD52 (DREAM) collaboration is performing R&D on dual readout calorimetry techniques with the aim of improving hadronic energy resolution for future high energy physics experiments. The simultaneous detection of Cherenkov and scintillation light enables us to measure the electromagnetic fraction of hadron shower event-by-event. As a result, we could eliminate the main fluctuation which prevented from achieving precision energy measurement for hadrons. We have tested the performance of the lead and copper fiber prototypes calorimeters with various energies of electromagnetic particles and hadrons. During the beam test, we investigated the energy resolutions for electrons and pions as well as the identification of those particles in a longitudinally unsegmented calorimeter. Measurements were also performed on pure and doped PbWO4 crystals, as well as BGO and BSO, with the aim of realizing a crystal based dual readout detector. We will describe our results, focusing on the more promising properties of homogeneous media for the technique. Guidelines for additional developments on crystals will be also given. Finally we discuss the construction techniques that we have used to assemble our prototypes and give an overview of the ones that could be industrialized for the construction of a full hermetic calorimeter. </P>
-
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>
-
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>
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
