Calculations of wakefields for the LHCb VeLo. Olga Zagorodnova Desy Hamburg April 8,

Longitudinal wake potential (30m) for CATIA model. Tapers with slots 2

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Different sets of the meshes. Δ xΔ z Mesh 1 1mm 2mm Mesh 20.5mm 2mm Mesh 30.2mm0.5mm2mm Mesh 40.5mm0.2mm2mm Mesh 50.5mm 1mm Mesh 60.2mm0.5mm1mm Mesh 70.5mm0.35mm1mm Mesh 80.5mm0.2mm1mm Mesh 90.2mm0.5mm Mesh 100.4mm 0.5mm impossibly 4 The calculations were performed for different beam positions: 1. x=0, y=0; 2. x=1.5mm, y=0; 3. x=0, y=1.5mm

Longitudinal wake potential (10m), was calculated for different mesh properties and presented in region from -0.5m to 0.5m. Beam position – on axis. Bunch length is 7.5cm. 5

Longitudinal wake potential (10m), was calculated for different mesh properties and presented in region from -0.5m to 10m. Beam position – on axis. Bunch length is 7.5cm. 6

Longitudinal wake potential (10m), was calculated for different mesh properties and presented in region from -0.5m to 0.5m. Beam position – on axis. Bunch length is 7.5cm. 7

Longitudinal wake potential (10m), was calculated for different mesh properties and presented in region from -0.5m to 10m. Beam position – on axis. Bunch length is 7.5cm. 8

Real part of the longitudinal impedance. 9

Imaginary part of the longitudinal impedance. 10

X – component of the transverse wake potential for different mesh properties. Beam position – on axis. Bunch length is 7.5cm. 11

X – component of the transverse wake potential for different mesh properties. Beam position – on axis. Bunch length is 7.5cm. 12

Y – component of the transverse wake potential for different mesh properties. Beam position – on axis. Bunch length is 7.5cm. 13

Y – component of the transverse wake potential for different mesh properties. Beam position – on axis. Bunch length is 7.5cm. 14

Longitudinal wake potential for different mesh properties. Beam position – x = 1.5mm, y=0. Bunch length is 7.5cm. 15

Longitudinal wake potential for different mesh properties. Beam position – x=0, y=1,5mm. Bunch length is 7.5cm. 16

X – component of the transverse wake potential for different mesh properties. Beam position – x = 1,5, y = 0. Bunch length is 7.5cm. 17

X – component of the transverse wake potential for different mesh properties. Beam position – x = 0, y = 1,5. Bunch length is 7.5cm. 18

X – component of the transverse wake potential for different mesh properties. Beam position – x = 0, y = 1,5. Bunch length is 7.5cm. 19

Y – component of the transverse wake potential for different mesh properties. Beam position – x = 1,5, y = 0. Bunch length is 7.5cm. 20

Y – component of the transverse wake potential for different mesh properties. Beam position – x = 0, y = 1,5. Bunch length is 7.5cm. 21

Y – component of the transverse wake potential for different mesh properties. Beam position – x = 0, y = 1,5. Bunch length is 7.5cm. 22