KaoS Flow Analysis

Experimental Setup

Phase Space Distribution

• Phase space distribution of protons from a FREESCO calculation for Ni+Ni at 1.93 AGeV

• Dashed: Large Angle Hodoscope

• Full: Small Angle Hodoscope

Reaction Plane • Use transvers momentum method• reaction plane defined by sum

of all measured transvers momenta

• Projectile Spectators have equal longitudinal velocity

Energy Loss

• Spectra after time of flight and energy loss calibration

Event Plane Determination• Small Angle Hodoscope

not symmetric• Grey detectors not

working • Assumption for all

corrections is that reaction plane distribution is flat for minimum bias events

Event Plane Determination

Event Plane Determination

Use only part between circles

Event Plane Determination

Correct count rate in rings ofΔΘ as function of ΔΦ

Event Plane Determination