@article{2f5e2eef7bb247d9b179d2ff3a4cfe72,
title = "Localizing particles showering in a Spaghetti Calorimeter",
abstract = "We report on the performance of a fine-grained 13-ton compensating lead/scintillating-fiber calorimeter, and in particular on its capability of localizing the particles that produce showers in it. The RMS position resolution was found to be 1.7 mm for electromagnetic showers and 5.1 mm for hadronic showers at 80 GeV, averaged over a tower with an effective radius of 39 mm. Pion-pion separation through analysis of the energy deposit pattern was achieved in more than 95% of the cases for distances down to 8 cm at 80 GeV. Because of the good lateral position resolution, detailed information on the longitudinal shower development could be obtained, with the help of tracking information, when single particles entered the (longitudinally unsegmented) detector at a small angle with respect to the fiber axis. This information made it possible to eliminate the effects of light attenuation in the fibers on the hadronic energy resolution and allowed e/π separation at the 10-4 level.",
author = "D. Acosta and S. Buontempo and L. Cal{\^o}ba and M. Caria and R. DeSalvo and A. Ereditato and R. Ferrari and G. Fumagalli and G. Goggi and W. Hao and Hartjes, {F. G.} and A. Henriques and L. Linssen and M. Livan and A. Maio and L. Mapelli and Mondardini, {M. R.} and B. Ong and Paar, {H. P.} and F. Pastore and M. Pereira and L. Poggioli and F. Riccardi and Scheel, {C. V.} and J. Schmitz and Seixas, {J. M.} and A. Simon and M. Sivertz and P. Sonderegger and Souza, {M. N.} and Thome, {Z. D.} and V. Vercesi and Y. Wang and R. Wigmans and C. Xu",
note = "Funding Information: D. Acosta a, S. Buontempo b, L. Calbba °, M. Caria d, R. DeSalvo f, A. Ereditato b, R. Ferrari G. Fumagalli h, G. Goggi h, W. Hao g,*, F.G. Hartjes ', A. Henriques f', L. Linssen f, M. Livan d, A. Maio', L. Mapelli e, M.R. Mondardini k, B. Ong a, H.P. Paar a, F. Pastore h, M . Pereira', L . Poggioli 1 , F . Riccardi b , C .V . Scheel f,k, J . Schmitz', J .M . Seixas c,g, A . Simon m, M. Sivertz a, P. Sonderegger e, M.N. Souza c, Z.D. Thome c, V. Vercesi h, Y. Wang g,*, R. Wignians f,' and C . Xu g' * University of California, San Diego, USA b Universit{\`a} di Napoli and INFN Sez. Napoli, Italy COPPE/EE/UFRJ, Rio de Janeiro, Brazil Universit{\`a} di Cagliari and INFN Sez. Cagliari, Italy e CERN, Geneva, Switzerland f CERN/LAA project, Geneva, Switzerland s CERN (Worldlab fellowship), Geneva, Switzerland h Universit{\`a} di Pavia and INFN Sez . Pavia, Italy ' NIKHEF-H, Amsterdam, The Netherlands LIP, Lisbon, Portugal k Cornell University, Ithaca, USA i LPNHE, Universit{\'e} Paris VI and VII, Paris, France m Universadt Heidelberg, Heidelberg, Germany Funding Information: We are very much indebted to the LAA project leader, Prof . A . Zichichi . We are grateful to P . Jenni who helped us in many ways, in particular when running the beam tests. The work described in this paper would have been impossible without the outstanding technical support provided by our technicians . O . Barnaba, M . Boriello, S . Bricola, J.-M. Chapuis, C . Farella, A . Freddi, G . Improta, G . Iuvino, F . Pagano, R. Rocco, L . Rose-Dulcina, G . Sannier, A. Sigrist and V . Vanzanella, Financial support from the Istituto Na-zionale di Fisica Nucleare to the Cagliari, Napoli and Pavia groups, from the Conselho Nacional de De-senvolvimento Cientifico e Technologico of Brazil to the Rio de Janeiro group, and from the Department of Energy to the San Diego group is acknowledged . And finally, we are grateful to the staff of the SPS, and in particular to N. Dobble, for the excellent beam conditions provided during our tests.",
year = "1991",
month = jul,
day = "10",
doi = "10.1016/0168-9002(91)90519-V",
language = "English",
volume = "305",
pages = "55--70",
journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",
number = "1",
}