LIU-IONS ECR L3-BCFAB-EC-0001 (EDMS 1560207)LINAC3

Faraday Cups UpgradeSergey Sadovich on behalf of BI-BE group

MFC01 dimensions

Designed by Ivan FrancescutBE-BI-ML

MFC01 potential

50100

200300

400500

600700

800900

10001100

120080

85

90

95

100

% of electrons in different components for MFC01 vs SE energy, HV=-1000V

Cup Repeller Insulator Shielding Background

MFC02 dimensions

Designed by Ivan FrancescutBE-BI-ML

MFC02 potential

50 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 150060

65

70

75

80

85

90

95

100

% of electrons in different components for MFC02, vs SE energy, HV = -1000V

Cup Repeller Insulator Shielding Background

Conclusion• Better performance of FCs is expected:• Grounded shielding is added• Length of repeller is increased (30% of total length)• Electrons with energy less then 500kev for MFC01 and 300keV for MFC02 will

be captured and stay in FCs.• Connection wire is hidden (to avoid irradiation)

• Faraday Cups should arrive at CERN next week (7-11 December) and installed after cleaning and vacuum test