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MD 25 ns 24/10/2011 Beam 1: 2098 bunches Beam 2: 804 Bunches Average intensity ≈ 8E10 p/b

MD 25 ns 24/10/2011 Beam 1: 2098 bunches Beam 2: 804 Bunches Average intensity ≈ 8E10 p/b G. Bregliozzi TE-VSC-LBV. Gauges in the MKI 1 and 4 in LSS2. 25 ns – Beam 1: 2098 bunches – Beam 2: 804 Bunches – 8E10 p/b. A. D. Solenoid ON/OFF. 1. 4. A. 1. 4. D.

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MD 25 ns 24/10/2011 Beam 1: 2098 bunches Beam 2: 804 Bunches Average intensity ≈ 8E10 p/b

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  1. MD 25 ns 24/10/2011 Beam 1: 2098 bunches Beam 2: 804 Bunches Average intensity ≈ 8E10 p/b G. Bregliozzi TE-VSC-LBV

  2. Gauges in the MKI 1 and 4 in LSS2 25 ns – Beam 1: 2098 bunches – Beam 2: 804 Bunches – 8E10 p/b A D Solenoid ON/OFF 1 4 A 1 4 D Pressure in the MKI at the extremities limited by the degassing of the cold-warm transition of Q4 and Q5

  3. Gauges in the MKI 2 and 3 in LSS2 25 ns – Beam 1: 2098 bunches – Beam 2: 804 Bunches – 8E10 p/b Injected Beam A – B – C 2 3 A B C 3 2 Pressure in the MKI 2 and 3 independent of the interconnecting modules and no pressure increase due to the injected beam

  4. LSS 2 Gauges in the interconnecting modules MKI – Circulating Beam 25 ns – Beam 1: 2098 bunches – Beam 2: 804 Bunches – 8E10 p/b E A 3 A B C D E Pressure in the interconnecting modules (circulating beam) independent reading. Maximum pressure increase in the extremities due to the cold-warm transition Q4-Q5

  5. For the LSS8 • Difficult to define any correlations

  6. Summary from the 25 ns MD: • The presence of the two beams is not allowing a detailed and precise analysis of the effects of the injected beam or circulating beam. • MKI 1 and 4 see pressure increase in the cold warm transition of Q4 and Q5: factor 2 lower. • MKI1 and MKI 4 presents the highest pressure increase • The vacuum of each MKI is generally independent from the adjacent.

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