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End-of-fill test separated collisions

End-of-fill test separated collisions. Test of separated collisions in ALICE 09:00-10:30 3 May 2010, ADJUST, 450 GeV 2 x 2 bunches, N b ~ 0.8 × 10 11 Emittance: Beam 1~nominal, Beam 2 ~ twice nominal Beams colliding in IP1, IP5, IP8 Re-separated horizontally in IP2 to ±2 mm

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End-of-fill test separated collisions

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  1. End-of-fill test separated collisions • Test of separated collisions in ALICE • 09:00-10:30 3 May 2010, ADJUST, 450 GeV • 2 x 2 bunches, Nb ~ 0.8 × 1011 • Emittance: Beam 1~nominal, Beam 2 ~ twice nominal • Beams colliding in IP1, IP5, IP8 • Re-separated horizontally in IP2 to ±2 mm • Separation scanned from +2 to -0.5 mm, few minutes each point • No significant effects on emittance, lifetime or losses • Encouraging for high energy operation with luminosity reduced in ALICE

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