Data Sheet for Thin Copper Skew Target

23rd July 2002

Thicknesses are measured at the 9 points marked t1 to t9. Four diameters are measured as indicated by d1 to d4.

Material	Copper
Purity	99.99%
Nominal thickness	3.0 mm
Thickness (mm)	t1  3.14	t2  3.14	t3  3.14	t4  3.13	t5  3.15
	t6  3.14	t7  3.13	t8  3.14	t9  3.11
Diameter (mm)	d1  29.99	d2  29.99	d3  29.99	d4  29.99
Mass (g)	19.58
Derived density	8.84 g cm-3
Data book density	8.92 g cm-3
Location	The centre of the target is 0.15 mm downstream of z = 0, see sketch below.

Plan view, from above. The target is rotated 45° with respect to the beam axis. The nominal orientation has the skew axis vertical, as shown. The support cap can be rotated in the support arm to achieve other orientations, as required.