Simulation measurement and mitigation of the beam induced

Simulation, measurement and mitigation of the beam induced power loss in the SPS injection kickers Mario Beck - Impedance meeting 01/06/2015 Impedance meeting 2

Content • Power loss calculations for results of first simulations • New impedance simulations • Longitudinal coupler (trimmed plates) • Transversal coupler with wires • Longitudinal coupler with wires • Power loss calculations for new simulations • Power loss distribution in the magnet • Comparison of imped. simulations and measurements for the MKP-S 01/06/2015 Impedance meeting 3

Power loss calculations (formulas) • 01/06/2015 Impedance meeting 4

Impedance simulations (first simulations) 01/06/2015 Impedance meeting 5

Power loss calculations (last meetings simulations) • 01/06/2015 Impedance meeting 6

New impedance simulations (long. coupler) 01/06/2015 Impedance meeting 7

New impedance simulations (trans. coupler) 01/06/2015 Impedance meeting 8

New impedance simulations (trans. coupl. wires) 01/06/2015 Impedance meeting 9

New impedance simulations (long. coupl. wires) 01/06/2015 Impedance meeting 10

Power loss calculations (new simulations) • Impedance curves of the simulation: 01/06/2015 Impedance meeting 11

Power loss calculations (new simulations) • 01/06/2015 Impedance meeting 12

Comparison of imped. simulations and measurements for the MKP-S • Simulations for same values as measurements • But measurements of 2 MKP-S kickers in tank 01/06/2015 Impedance meeting dxb 13

Comparison of power loss reduction gain in MKP-S 01/06/2015 Impedance meeting 14

Power loss distribution in magnet sectional plane 1 view in sectional plane 1 beam direction view in sectional plane 2 01/06/2015 sectional plane 2 Impedance meeting 15

Power loss distribution in magnet II • Power loss depended on depth and position • Simulation shows unequal distribution beam direction 01/06/2015 Impedance meeting 16

Measured S-parameters MKP-S • Measurements of 2 MKP-S kickers in tank 01/06/2015 Impedance meeting 17