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LHCb Status Report - CERN

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Trigger Outlook<br />

Can write up to 2 kHz. Did not<br />

yet have to cut. . .<br />

Soon will need to switch on<br />

Hlt1<br />

IP resolution under control<br />

µ efficiency being monitored<br />

L0xHt1 efficiency on<br />

unbiased D ∗ (60 ± 4)%<br />

(MC: 66%)<br />

Then will need Hlt2<br />

Collisions L0 Hlt1 Hlt2<br />

< 2 kHz “MB trigger”<br />

< 25 kHz ≤ 25 kHz 2 kHz<br />

< 300 kHz ≤ 300 kHz 10 kHz 2 kHz<br />

Patrick Koppenburg <strong>LHCb</strong> <strong>Status</strong> <strong>Report</strong> 101 st LHCC — 5 May 2010 [38/39]

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