Beam-Beam Observations in RHIC

by Wolfram Fischer (BNL/New York)

Thursday 18 Apr 2002, 16:00 → 17:00 Europe/Zurich

SL Auditorium (CERN)

Beam-beam effects in RHIC were observed in operation and in dedicated experiments with both gold ions and protons. Observations include measured beam-beam induced tune shifts as well as lifetime and emittance growth measurements with and without beam-beam interaction. During ramps unequal radio frequencies in the two rings cause the crossing points to move longitudinally. Thus bunches experience beam-beam interactions only in intervals and the transverse tunes are modulated. RHIC is the only existing hadron collider in which strong-strong beam-beam effects can be expected. Beam-beam driven coherent transverse oscillation modes could be created in an experiment and were also seen during routine operation.

Organiser(s): Werner Herr / SL Division

Note: Tea and coffee will be served at 15:30 in front of the Auditorium

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