Wednesday Week 2 Lecture

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Presentation transcript:

Wednesday Week 2 Lecture 1 Wednesday Week 2 Lecture Jeff Eldred Electron Cloud 1 1 1 1 1

2 Electron Cloud 2 2 2 2 2

Short-bunch Electron Cloud 3 Short-bunch Electron Cloud Kick Transit Secondary Electrons 3 3 3

Long-bunch Electron Cloud 4 Long-bunch Electron Cloud 4 4 4

Secondary Electron Yield 5 Secondary Electron Yield 5 5 5

Electron Cloud Buildup 6 Electron Cloud Buildup Force on an electron: Total Secondary Electron Yield: Build-up of Electrons: 6 6 6

Electron Cloud Build-up 7 Electron Cloud Build-up 7 7 7

Electron Cloud Saturation 8 Electron Cloud Saturation Distribution Function: Vlasov Equation: 8 8 8

Electron Cloud in Dipoles 9 Electron Cloud in Dipoles Recycler Gradient Dipole Image credit, RR TDR

Ecloud Measured in Cornell Dipole 10 Ecloud Measured in Cornell Dipole Credit to Cornell

Electron Cloud Trapping in Dipoles 11 Electron Cloud Trapping in Dipoles Recycler Gradient Dipole Image credit, RR TDR Image credit, SLAC Electrons trapped in curved B field lines

Electron Cloud Trapping 12 Electron Cloud Trapping Image credit, SLAC Electrons trapped in curved B field lines

Electron Cloud in Quadrupole 13 Electron Cloud in Quadrupole

Nonlinear Excitation of Beam 14 Nonlinear Excitation of Beam Credit to Balbekov 14 14 14 14 14 14