First results from the 1994 lead beam run of WA97 G D Alexeev , Espen S Andersen , A Andrighetto , F Antinori , N Armenise , J Ban , D Barberis , A C Bayes , H Beker , M Benayoun , W Beusch , R Blaes , J Bohm , J M Brom , M Campbell , E Cantatore , J N Carney , N Carrer , M G Catanesi , E Chesi , M Dameri , G Darbo , J P Davies , A Diaczek , D Di Bari , S Di Liberto , A Di Mauro , J P Dufey , D Elia , D Evans , K Fanebust , Rong Fang , Ph Farthouat , R A Fini , B R French , W Geist , C Gemme , B Ghidini , G Grella , M Guida , E H M Heijne , H Helstrup , A K Holme , Alexandre A V Inyakin , A Jacholkowski , P Jovanovic , A Jusko , Vassili Kachanov , T Kachelhoffer , J Kahane , V Y Khodyrev , J B Kinson , A Kirk , W Klempt , K Knudson , I Kralik , J C Lassalle , V Lenti , Ph Leruste , J Lien , R Lietava , L Lopez , G Lovhoiden , M Luptak , I Macha , V Manzari , P Martinengo , M A Mazzoni , F Meddi , A Michalon , M E Michalonmentzer , P Middelkamp , M Morando , M T Muciaccia , E Nappi , J L Narjoux , F Navach , K L Norman , B Osculati , M Pairat , A Pallares , B Pastircak , F Pellegrini , K Piska , F Posa , E Quercigh , J L Reister , Trond Reitan , R A Ricci , G Romano , Giovanni Rosa , L P Rossi , H Rotscheidt , Karel Safarik , J Sahagun Pareja , S Saladino , L Sandor , S Sclmane , T Scognetti , G Segato , M Sene , R Sene , P Sennels , Petr P M Shagin , S Simone , A Singovski , B Sopko , P Staroba , J Stastny , T Storaas , S Szafran , T F Thorsteinsen , G Tomasicchio , J Urban , M Vanickova , G Vassiliadis , H Vettunen , O Villalobos Baillie , T Virgili , A Volte , C Voltolini , M F Votruba , P Zavada Nuclear Physics A（1995）
摘要
WA97 is designed to study strange and multi-strange baryon and anti-baryon production in 160 A GeVc PbPb collisions at the SPS with a telescope of silicon microdetectors. Four planes of silicon pixel detectors were successfully employed during the 1994 Pb run. A total of 60M central PbPb events were collected. We describe the experimental setup and report on some preliminary results from the off-line analysis.
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