TY - JOUR
T1 - The performance of a lead/scintillating-fiber calorimeter at LHC/SSC compatible gate widths
AU - Acosta, D.
AU - Avellino, P.
AU - Buontempo, S.
AU - Calôba, L.
AU - DeSalvo, R.
AU - Ereditato, A.
AU - Ferrari, R.
AU - Fumagalli, G.
AU - Goggi, G.
AU - Hao, W.
AU - Henriques, A.
AU - Linssen,
AU - Livan, M.
AU - Maio, A.
AU - Mondardini, M. R.
AU - Ong, B.
AU - Paar, H. P.
AU - Pastore, F.
AU - Pennacchio, E.
AU - Poggioli, L.
AU - Polesello, G.
AU - Riccardi, F.
AU - Rimoldi, A.
AU - Scheel, C. V.
AU - Seixas, J. M.
AU - Simon, A.
AU - Silva, C.
AU - Sivertz, M.
AU - Sonderegger, P.
AU - Souza, M. N.
AU - Thomé, Z. D.
AU - Vercesi, V.
AU - Wang, Y.
AU - Wigmans, R.
AU - Xu, C.
N1 - Funding Information:
We are deeply grateful to the LAA Project Loader, Prof. A. Zichichi, for his vision, his warm interest and his encouraging support. We thank our colleagues from the UA2 Group, and in particular P. Jcnni and L. Mapclli, who helped us in many ways, in particular during the beam tests. The work described in this paper would have been impossible without the out-standing technical support provided by our technicians O. Barnaba, C. Baudoin, M. Borricllo, S. Bricola, J .-M. Chapuis, C. Farella, B. Foligne, A. Frcddi, G. Improta, G. luvino, F. Pagano, S. Robinson, R. Rocco, L. Rose-Dulcina, G. Sannier, C. Schillingcr, A. Sigrist and V. Vanzanella. (Financial support fArom the Stiehting for Fundamenteel Onderzoek der Materie to the NIKHEF group, from the Istituto Nazionale di Fisica Nucleare to the Cagliari, Napoli and Pavia groups, from the Junta Nacional de Investigag5o Cientifica of Portugal to the Lisbon group, from the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico of Brazil to the Rio de Janeiro group, and from the US Depart-ment of Energy and National Science Foundation to the San Diego group is acknowledged . Two of us (S .B . and F.R.) wish to thank the Digital Equipment Corpo-ration for support. And finally, we arc grateful to the staff of the SPS, and in particular to N. Doble, for the excellent beam conditions and assistance provided dur-ing our tests.
PY - 1992/5/10
Y1 - 1992/5/10
N2 - We report on an experimental study of the performance of a lead/scintillating-fiber calorimeter intended for the detection of leptons, hadrons, gammas and missing energy. In particular, the effects of reducing the charge collection time down to values that are relevant for experiments at the future proton-proton colliders LHC and SSC are investigated. The total calorimeter signal, the energy resolution, the e/π signal ratio, the signal linearity, the hadronic shower profile and the electron/pion separation capability of the detector are measured as a function of the charge collection time, ranging from 5 to 358 ns. The performance is practically unaffected down to ∼40 ns, even when unrealistically long signal cables are used and no signal shaping is applied. For shorter gates, we observe incomplete charge collection, a gradually deteriorating energy resolution, an increase in the e/π signal ratio and in the hadronic signal nonlinearity, a narrowing of the hadronic shower profile and a degradation of the electron/pion separation. However, even for gates as short as the LHC/SSC bunch-bunch spacing (∼ 15 ns), these effects are not unacceptably large. The experiments were performed in the framework of the LAA project at CERN.
AB - We report on an experimental study of the performance of a lead/scintillating-fiber calorimeter intended for the detection of leptons, hadrons, gammas and missing energy. In particular, the effects of reducing the charge collection time down to values that are relevant for experiments at the future proton-proton colliders LHC and SSC are investigated. The total calorimeter signal, the energy resolution, the e/π signal ratio, the signal linearity, the hadronic shower profile and the electron/pion separation capability of the detector are measured as a function of the charge collection time, ranging from 5 to 358 ns. The performance is practically unaffected down to ∼40 ns, even when unrealistically long signal cables are used and no signal shaping is applied. For shorter gates, we observe incomplete charge collection, a gradually deteriorating energy resolution, an increase in the e/π signal ratio and in the hadronic signal nonlinearity, a narrowing of the hadronic shower profile and a degradation of the electron/pion separation. However, even for gates as short as the LHC/SSC bunch-bunch spacing (∼ 15 ns), these effects are not unacceptably large. The experiments were performed in the framework of the LAA project at CERN.
UR - http://www.scopus.com/inward/record.url?scp=0040667329&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(92)90235-V
DO - 10.1016/0168-9002(92)90235-V
M3 - Article
AN - SCOPUS:0040667329
SN - 0168-9002
VL - 314
SP - 431
EP - 449
JO - Nuclear Inst. and Methods in Physics Research, A
JF - Nuclear Inst. and Methods in Physics Research, A
IS - 3
ER -