Electron Cloud Buildup Analysis for ILC Damping Ring Lattice DTC03

Parameters for Electron Cloud Buildup and Instability Simulations 2012, M.T.F. Pivi 29.02.2012

Photon Absorption Rates and Distributions for the ILC Damping Ring (dtc03) by Ring Region, G. Dugan, 02.03.2012



Electron cloud density averaged over 20-sigma beam region

Secondary yield model for rediffused and elastic components for aluminum (δrediffused = 0.19, δelastic = 0.5)

Drift

Solenoid (40G)

Quadrupole (10 T/m)

Sextupole (55 T/m2)

Wiggler Region

4.0e12

0

0.12e12

None

Arc1 Region

0.25e12

0

0.14e12*

0.12e12*

Arc2 Region

0.25e12

0

0.14e12*

0.12e12*

* Not saturated after 34 bunch train

Electron cloud density averaged over 20-sigma beam region

Secondary yield model for rediffused and elastic components from cloud lifetime measurements (δrediffused = 0.1, δelastic = 0.05)

Drift

Solenoid (40G)

Quadrupole (10 T/m)

Sextupole (70 T/m2)

Wiggler Region

2.50e12

0

0.10e12

None

Arc1 Region

0.20e12

0

0.07e12

0.1e12*

Arc2 Region

0.20e12

0

0.08e12*

0.09e12

* Not saturated after 34 bunch train