Elson Longo
Sapienza University of Rome
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Nuclear Instruments and Methods | 1980
A.N. Diddens; M. Jonker; J. Panman; F. Udo; J. Allaby; U. Amaldi; G. Barbiellini; A. Baroncelli; V. Blobel; G. Cocconi; W. Flegel; W. Kozanecki; Elson Longo; K. H. Mess; M. Metcalf; J. Meyer; R. S. Orr; F. Schneider; A.M. Wetherell; K. Winter; F.W. Büsser; P. D. Gall; H. Grote; P. Heine; B. Kröger; F. Niebergall; K. H. Ranitzsch; P. Stähelin; V. Gemanov; E. Grigoriev
Abstract The construction and performance of a large detector, designed principally to investigate neutral-current interactions of high-energy neutrinos, are described. The detector consists of an ionization calorimeter as a target to determine the energy and the direction of the shower produced by the neutrino scattering, and of a magnetic muon spectrometer. The calorimeter has also been used as a muon polarimeter.
Physics Letters B | 1979
M. Jonker; J. Panman; F. Udo; F. L. Navarria; J. Allaby; U. Amaldi; G. Barbiellini; A. Baroncelli; G. Cocconi; J. De Groot; W. Flegel; Peter Gall; W. Kozanecki; Elson Longo; K.H. Mess; M. Metcalf; J. Meyer; R. S. Orr; A. Savoy-Navarro; F. Schneider; A.M. Wetherell; K. Winter; F.W. Büsser; H. Grote; P. Heine; B. Kröger; F. Niebergall; P. Stähelin; E. Grigoriev; V. Kaftanov
The polarization of positive muons produced in charged current interactions of high-energy antineutrinos in iron has been measured at an average momentum transfer of = 3.2 GeV2. The muon spin is found to be oriented forward with respect to the muon momentum vector with an average polarization of 1.09 ± 0.22, consistent with helicity +1. It is concluded that the weak leptonic charged current retains its dominant vector and axial vector structure at high energies.
Nuclear Instruments and Methods | 1980
A.N. Diddens; M. Jonker; J. Panman; F. Udo; J. Allaby; U. Amaldi; G. Barbiellini; A. Baroncelli; V. Blobel; G. Cocconi; W. Flegel; W. Kozanecki; Elson Longo; K. H. Mess; M. Metcalf; J. Meyer; R. S. Orr; W. Schmidt-Parzefall; F. Schneider; A.M. Wetherell; K. Winter; F.W. Büsser; P. D. Gall; H. Grote; P. Heine; B. Kröger; F. Niebergall; K. H. Ranitzsch; P. Stähelin; V. Gemanov
Abstract The features of proportional counters and of drift chambers have been combined in a single detector element. For a fine-grain calorimeter used in a neutrino experiment a system of 13 000 counters has been built. The performance and long-term stability of the proportional drift tubes and the electronics are discussed.
International Europhysics Conference on High-energy Physics | 1985
I. Abt; J. Allaby; U. Amaldi; J. Aspiazu; G. Barbiellini; L. Barone; A. Baroncelli; M. Baubillier; F. Bergsma; B. Borgia; C. Bosio; A. Bngener; F W. Bsser; A. Capone; H. Daumann; M. Diemoz; C Dionisi; U. Dore; F. Ferroni; W. Flegel; Peter Gall; P. Gorbunov; F. Grancagnolo; E A. Grigoriev; T. Hebbeker; V D Khovanskii; L. Lanceri; Elson Longo; P F. Loverre; L. Luminari
