Radial Position (mm)

Attenuator Thickness (mm)

0

1.67

4.3

1.67

8.6

1.64

12.9

1.61

17.2

1.57

21.5

1.51

25.8

1.43

30.1

1.34

34.4

1.24

38.7

1.13

43.0

1.00