SLIDE 1
March 18, 2005 ERL 2005, Jefferson Lab
Cavity Preparation/Assembly Techniques and Impact on Q Realistic Q-factors in a Module, Review of Modules
- P. Kneisel
Jefferson Lab
March 18, 2005 ERL 2005, Jefferson Lab
Why Surface Treatment?
Damage layer influences cavity Performance
- •
- •
- * * *
* * * * * * * * * * * * * * * * * * * * * * *
² ² ² ² ² ² ² ² ²² ² ² ² ² ² ² ² ² ² ² ² ² ² ² ²
x x x xx x x x x x x x x x x x x x x x x x
O O O O O O O O O O O O O O O O O 5E+8 1E+9 1E+10 5E+10 10 20 30 40 50 60 Qo Epeak [MV/m]
- 4 µm
*
31 µm
²
79 µm
x
120 µm
O
230 µm
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- 10
20 30 40 50 100 150 200 250
Rres [nΩ] Material Removal [µm]
- • • •
- 10
20 30 40 50 60 70 50 100 150 200 250
Epeak [MV/m]
Ma te ria l Re m ova l [µm ]