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HERA Week #35 ‘05. Luminosity Production : Proton Currents large (>90mA) Electron Currents, only slow progress peak Luminosity > 4 ∙10 31 cm -2 s 1 Specific Luminosity ok ∫ Ldt = 6.41pb -1.
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HERA Week #35 ‘05 Luminosity Production: Proton Currents large (>90mA) Electron Currents, only slow progress peak Luminosity > 4∙1031cm-2s1 Specific Luminosity ok ∫ Ldt = 6.41pb-1 Operations: Some rune with poor e lifetime (dust?!) kicking the beam helps a bit Backgrounds: No major problems Polarization: unchanged: 30-50% for colliding bunches, no tuning Technical Problems: PS GN06, 16h, Transmitter SL (HV connector), Transmitter SR, 52MHz System A, Chopper PS, ... Efficiency h=44%