calculations of wakefields for the lhcb velo. olga zagorodnova desy hamburg april 8, 2015 1
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Calculations of wakefields for the LHCb VeLo.
Olga Zagorodnova Desy Hamburg April 8, 2015
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Longitudinal wake potential (30m) for CATIA model.
Tapers with slots
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Different sets of the meshes.
Δ x y Δ z
Mesh 1 1mm 1mm 2mm
Mesh 2 0.5mm 0.5mm 2mm
Mesh 3 0.2mm 0.5mm 2mm
Mesh 4 0.5mm 0.2mm 2mm
Mesh 5 0.5mm 0.5mm 1mm
Mesh 6 0.2mm 0.5mm 1mm
Mesh 7 0.5mm 0.35mm 1mm
Mesh 8 0.5mm 0.2mm 1mm
Mesh 9 0.2mm 0.5mm 0.5mm
Mesh 10 0.4mm 0.4mm 0.5mmimpossibly
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
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=0.00012 V/pC
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.
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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.
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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.
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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.
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Real part of the longitudinal impedance.
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Imaginary part of the longitudinal impedance.
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X – component of the transverse wake potential for different mesh properties.Beam position – on axis. Bunch length is 7.5cm.
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X – component of the transverse wake potential for different mesh properties.Beam position – on axis. Bunch length is 7.5cm.
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Y – component of the transverse wake potential for different mesh properties.Beam position – on axis. Bunch length is 7.5cm.
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Y – component of the transverse wake potential for different mesh properties.Beam position – on axis. Bunch length is 7.5cm.
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Longitudinal wake potential for different mesh properties.Beam position – x = 1.5mm, y=0. Bunch length is 7.5cm.
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Longitudinal wake potential for different mesh properties.Beam position – x=0, y=1,5mm. Bunch length is 7.5cm.
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X – component of the transverse wake potential for different mesh properties.Beam position – x = 1,5, y = 0. Bunch length is 7.5cm.
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X – component of the transverse wake potential for different mesh properties.Beam position – x = 0, y = 1,5. Bunch length is 7.5cm.
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X – component of the transverse wake potential for different mesh properties.Beam position – x = 0, y = 1,5. Bunch length is 7.5cm.
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Y – component of the transverse wake potential for different mesh properties.Beam position – x = 1,5, y = 0. Bunch length is 7.5cm.
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Y – component of the transverse wake potential for different mesh properties.Beam position – x = 0, y = 1,5. Bunch length is 7.5cm.
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Y – component of the transverse wake potential for different mesh properties.Beam position – x = 0, y = 1,5. Bunch length is 7.5cm.