scispace - formally typeset
Search or ask a question

Showing papers by "Gianni Penso published in 2000"

Journal Article•DOI•
Measurement of the Ds→μνμ branching fraction and of the Ds decay constant

[...]

Yu. Alexandrov1, Corrado Angelini2, Dario Barberis3, Filippo Ceradini, M. Dameri3, Giovanni Darbo3, A. Duane4, V. Flaminio2, B. R. French5, C. Gemme3, K. Harrison6, R. Hurst3, C. Lazzeroni2, L. Malferrari7, G. Martellotti6, P. Mazzanti7, P. Netchaeva1, Domizia Orestano, Bianca Osculati3, Gianni Penso6, Leonardo Paolo Rossi3, H. Rotscheidt5, D. Websdale4, M. V. Zavertyaev1 •
Lebedev Physical Institute1, University of Pisa2, University of Genoa3, Imperial College London4, CERN5, Sapienza University of Rome6, University of Bologna7
06 Apr 2000-Physics Letters B
TL;DR: In this article, the branching fraction for leptonic decay B (D s → μν μ ) was measured to be (0.83±0.23 stat. ±0.06 syst.

19 citations

Journal Article•DOI•
High-resolution tracking using large capillary bundles filled with liquid scintillator

[...]

P. Annis, A. Bay1, L Benussi, N. Bruski2, Salvatore Buontempo, C. Currat1, Nicola D'Ambrosio2, R. van Dantzig, J. Dupraz3, Antonio Ereditato, Jean-Paul Fabre3, V Fanti, J. Feyt3, D. Frekers2, A. Frenkel4, F. Galeazzi4, F. Garufi, J. Goldberg5, S.V. Golovkin, A.M. Gorin, G. Grégoire6, K. Harrison4, K. Hoepfner5, K Holtz2, J. Konijn, E.N. Kozarenko, I. Kreslo4, A.E Kushnirenko, B. Liberti4, G. Martellotti4, A.M. Medvedkov, L. Michel6, P. Migliozzi, C. Mommaert, M.R Mondardini7, J. Panman3, Gianni Penso4, Yu.P. Petukhov, D. Rondeshagen2, W.P Siegmund, V. E. Tyukov, G. Van Beek, V.G. Vasil'chenko, Pierre Vilain, J. L. Visschers, Gaston Wilquet, K. Winter7, T. Wolff2, H.J. Wörtche2, Henry T. Wong3, K.V Zimyn •
University of Lausanne1, University of Münster2, CERN3, Sapienza University of Rome4, Technion – Israel Institute of Technology5, Université catholique de Louvain6, Humboldt University of Berlin7
11 Jul 2000-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, the authors developed large high-resolution tracking detectors based on glass capillaries filled with organic liquid scintillator of high refractive index, which act simultaneously as detectors of charged particles and as image guides.
Abstract: We have developed large high-resolution tracking detectors based on glass capillaries filled with organic liquid scintillator of high refractive index These liquid-core scintillating optical fibres act simultaneously as detectors of charged particles and as image guides Track images projected onto the readout end of a capillary bundle are visualized by an optoelectronic chain consisting of a set of image-intensifier tubes followed by a photosensitive CCD or by an EBCCD camera Two prototype detectors, each composed of ≈106 capillaries with 20– 25 μm diameter and 09–18 m length, have been tested, and a spatial resolution of the order of 20– 40 μm has been attained A high scintillation efficiency and a large light-attenuation length, in excess of 3 m, was achieved through special purification of the liquid scintillator Along the tracks of minimum-ionizing particles, the hit densities obtained were ∼8 hits / mm at the readout window, and ∼3 hits / mm at ∼1 m away The level of radiation resistance of the prototype detectors is at least an order of magnitude higher than that of other tracking devices of comparable performance

17 citations

Journal Article•DOI•
A multichannel single-photon sensitive detector for high-energy physics: the megapixel EBCCD

[...]

L Benussi, V Fanti, D. Frekers1, A. Frenkel2, G. Giannini, S.V. Golovkin, E.N. Kozarenko, I. Kreslo2, B. Liberti2, G. Martellotti2, A.M. Medvedkov, M.R Mondardini3, Gianni Penso2, A Polizzi2, R. Santacesaria2, G Santini, M. Spinetti, Pierre Vilain, Lucia Votano, Gaston Wilquet, K. Winter3 •
University of Münster1, Sapienza University of Rome2, Humboldt University of Berlin3
11 Mar 2000-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, a hybrid image intensifier tube based on a thinned backside Electron Bombarded CCD (EBCCD) with better performance in spatial resolution, single photoelectron detection and gain stability than the conventional intensified systems was presented.
Abstract: We present a study of the characteristics of a hybrid image intensifier tube based on a thinned backside Electron Bombarded CCD (EBCCD) with better performance in spatial resolution, single photoelectron detection and gain stability than the conventional intensified systems based on a Micro Channel Plate followed by a CCD. Single photon detection sensitivity has been studied and a procedure to correct the gain non-uniformity of the EBCCD has been developed. The EBCCD, operating at 14 kV, has an average gain of ∼3000 electrons/photoelectron and a noise of the order of 100 electron/pixel. These characteristics make the EBCCD a very attractive device for many applications in high-energy physics, astrophysics and biomedicine. A possible application in a neutrino oscillation experiment is presented.

15 citations