D. Osborne
Boston University
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Publication
Featured researches published by D. Osborne.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1995
N. Akchurin; S Doulas; Opher Ganel; Y Gershtein; V. Gavrilov; V. Kolosov; S. Kuleshov; D Litvinsev; J.-P Merlo; Y. Onel; D. Osborne; A Rosowsky; V. Stolin; L. Sulak; J Sullivan; A. Ulyanov; R. Wigmans
Abstract The fundamentals of a new electromagnetic and hadronic sampling calorimetry based on the detection of Cherenkov light generated in quartz optical fibers are presented. Optical fibers transport light only in a selected angular range which results in a non-obvious and absolutely unique characteristic for this new technique: showers of very narrow visible energy. In addition, the technique is characterized by radiation resistance measured in Gigarads and nanosecond signal duration. Combined, these properties make quartz fiber calorimetry a very promising technique for high intensity heavy ion experiments and for the high pseudorapidity regions of high intensity collider experiments. The results of beam tests and simulations are used to illustrate the basic properties and peculiar characteristics of this recent development.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1997
N. Akchurin; S Ayan; Gy.L. Bencze; K Chikin; H Cohn; S Doulas; I Dumanoǧlu; E. Eskut; A. Fenyvesi; Adolfo A. Ferrando; M. C. Fouz; Opher Ganel; V. Gavrilov; Y. Gershtein; C. Hajdu; J Iosifidis; M.I. Josa; A. Khan; S.B Kim; V. Kolosov; S. Kuleshov; J Langland; D. Litvintsev; J.-P Merlo; J. Molnar; A. Nikitin; Y. Onel; G. Onengut; D. Osborne; N Özdeş-Koca
Abstract We present the results of beam tests with high-energy (8–375 GeV) electrons, pions, protons and muons of a sampling calorimeter based on the detection of Cherenkov light produced by shower particles. The detector, a prototype for the very forward calorimeters in the CMS experiment, consists of thin quartz fibers embedded in a copper matrix. Results are given on the light yield of this device, on its energy resolution for electron and hadron detection, and on the signal uniformity and linearity. The signal generation mechanism gives this type of detector unique properties, especially for the detection of hadron showers: narrow, shallow shower profiles and extremely fast signals. These specific properties were measured in detail. The implications for measurements in the high-rate, high-radiation Large Hadron Collider (LHC) environment are discussed.
Journal of Physics G | 2004
A. S. Ayan; N. Akchurin; U. Akgun; E. W. Anderson; Z Bagoly; G Y Bencze; P Bruecken; G. Debreczeni; I. Dumanoglu; E. Eskut; A. Fenyvesi; V. Gavrilov; A. Gribushin; Csaba Hajdu; J. M. Hauptman; A Kayis; V. Kolosov; S Kuleshov; J.-P. Merlo; M. J. Miller; E. McCliment; J. Molnar; A Nikitin; Y. Onel; G. Onengut; D. Osborne; N Özdeş-Koca; V Pikalov; A. Polatoz; I. Schmidt
The first pre-production-prototype (PPP-I) of the quartz fibre calorimeter of the CMS detector has been tested at CERN. The calorimeter consists of quartz fibres embedded in an iron matrix. Results are presented on the energy resolution and on the signal uniformity of the prototype for electrons and pions and the signal uniformity and linearity.
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms | 2002
N Akchurin; A. S. Ayan; Gy.L. Bencze; I Dumanoğlu; E. Eskut; A Fenyvesi; Adolfo A. Ferrando; V. Gavrilov; Csaba Hajdu; M.I. Josa; A Kayis; V. Kolosov; S. Kuleshov; A Kuzucu-Polatoz; D. Litvintsev; O Lobban; J.-P Merlo; J. Molnar; Y. Onel; G. Onengut; D. Osborne; N Özdeş-Koca; V. Stolin; L. Sulak; A. Ulyanov; S Uzunian; G. Vesztergombi; R. Wigmans; A. Yumashev; P. Zalan
The experiments at the Large Hadron Collider (LHC) will have to deal with unprecedented radiation levels. In the large-rapidity regions, close to the beam pipe, these levels reach megagrays per year. The detectors to be installed in these regions, the HF Calorimeters, are designed to operate under these conditions. In this paper, we describe the results of studies in which a prototype calorimeter was exposed to radiation of the type and intensity expected at the LHC. These studies made it possible to estimate the effects of this radiation on the response and the resolution of the calorimeter as a function of time during LHC operation.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998
N. Akchurin; S Ayan; Gy.L. Bencze; K Chikin; H Cohn; S Doulas; I Dumanoǧlu; E. Eskut; A. Fenyvesi; Adolfo A. Ferrando; M. C. Fouz; V. Gavrilov; Y. Gershtein; C. Hajdu; J Iosifidis; M.I. Josa; A. Khan; S. B. Kim; V. Kolosov; S. Kuleshov; J Langland; D Litvinsev; J.-P. Merlo; J. Molnar; A. Nikitin; Y. Onel; G. Onengut; D. Osborne; N Özdeş-Kosa; Aldo Penzo
Abstract CMS very forward calorimeter is based on a quartz fibre technology. The calorimeter prototype composed of two longitudinal segments was tested at CERN in 1996. We present the test beam data analysis of this prototype. It was shown that the mean values of responses for pions and electrons of the same energy could be equalised using the appropriate ratio of calibration constants for longitudinal segments. The beam test data were used to simulate the calorimeter response to hadron jets.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1997
N. Akchurin; S Ayan; Gy.L. Bencze; K Chikin; H Cohn; S Doulas; I Dumanŏglu; E. Eskut; A Fenyvesi; A. Ferrando; M.C. Fouz; V. Gavrilov; Y Gershtein; Csaba Hajdu; J Iosifidis; M.I. Josa; A. Khan; S.B Kim; V. Kolosov; S. Kuleshov; J Langland; D. Litvintsev; J.-P Merlo; J. Molnar; A. Nikitin; Y. Onel; G. Onengut; D. Osborne; N Özdeş-Koca; Aldo Penzo
Abstract We present test-beam data analysis of a quartzfibre calorimeter prototype composed of a single active section with a passive absorber in front of it. The partial suppression of the electromagnetic showers leads to the equalization of the response to electrons and pions for a given depth of this passive section. Results are compared with the Monte-Carlo expectations.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998
N. Akchurin; S Ayan; Gy.L. Bencze; K Chikin; H Cohn; S Doulas; I Dumanoǧlu; E. Eskut; A. Fenyvesi; A. Ferrando; M. C. Fouz; Opher Ganel; V. Gavrilov; Y. Gershtein; Csaba Hajdu; J Iosifidis; M. I. Josa; A. Kayis; A. Khan; S.B Kim; V. Kolosov; S. Kuleshov; A Kuzucu-Polatoz; J Langland; D. O. Litvintsev; J.-P Merlo; J. Molnar; A Nikitin; Y. Onel; G. Onengut
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2003
S. Ahlen; G Hu; D. Osborne; A Schulz; J. T. Shank; Q. Xu; B. Zhou