Procedure for Placing the Sample in a Previously Determined Position

1. The three linear motion drivers, and the one of the two rotational motion drivers with a vertical rotation axis, attached to the sample (section 4.1,) were used to position the sample in the previously determined position, to the nearest tenth of a millimetre in the each of the three translational dimensions, and to the nearest tenth of a degree in the rotational dimension. The reasons for choosing this level of precision are discussed in section 5.4.