34ID-E Coordinate Systems

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Beamline Coordinates

X-Y-Z

34IDE beamline XYZ and XHF coordinate systems, side view from outside of the ring.

• X: radial direction of the ring, horizontal, pointing outboard to the doors.
• Y: vertically upward (against gravity).
• Z: along the x-ray beam

X-H-F

Because we routinely deal with motions in 45°-tilted directions, H and F are introduced as alternative coordinates to Y and Z:

• H: 45° upward-downstream (combination of +Y and +Z), this is the typical movement direction of the depth-profiling wire.
• F: 45° downward-downstream (combination of -Y and +Z), this is the "focus" direction of the sample under the optical microscope.

<math>H = \frac{1}{\sqrt{2}}(Y+Z)</math>

<math>F = \frac{1}{\sqrt{2}}(-Y+Z) </math>