1. Relativistic Heavy Ions Experiment II Global Observables

2. Participant – Spectator Scenario

3. NA49 Trigger Setup

4. NA49 Target Area

5. NA49 Ring Calorimeter

6. NA49 Veto Calorimeter

7. Hadronic Calorimeter

9. Distributions of N ch and E T

10. Correlation E F and E T

11. Centrality Classes

12. Centrality Selection via Multplicity: WA97 / NA57

14. Beam-Beam Counter at RHIC

16. Zero Degree Calorimeter (ZDC) at RHIC

17. Centrality Selection at RHIC

18. E T Distribution

19. Energy Density (Bjørken)

20. Wounded Nucleon Scaling

21. Participant Scaling

22. Energy Density

23. Stopping yPyP yTyT y0y0 yy yy y0y0 yPyP yTyT yy yy y’ T y’ p Baryonnumber distributions Lower energies:Higher energies:

24. Stopping NA49 Observable: net-proton distributions

25. Stopping

26. Energy Dependence of  y  Linear increase up to SPS:  y  /y beam  0.27 Rapidity shift: Energy loss  E : RHIC (  s NN = 200 GeV):  E = 25.7 ± 2.1 TeV  E/Nucleon = 72± 6 GeV

27. Rapidity-Distributions of Baryons Central Pb+Pb, 158 AGeV Net-protons: 3 Valence Quarks (uud ) Omegas: 3 produced Quarks (sss ) Net  s: 1 Valence (d ) + 2 produced Quarks (ss ) Net  s: 2 Valence (ud ) + 1 produced Quark (s ) NA49 dn/dy (a.u.) y