The Game of Diffraction

A six-circle machine and a pitch–phi surface machine, in your browser.

Diffractometer

Machine

Six circles: sample on a (mu, eta, chi, phi) cradle, detector on a (delta, gamma) arm.

Beam and detector

WavelengthÅ

EnergykeV

Detector

Pixel sizemm

Pixels h×v

Distancemm

Preview bin

Motors

Speed °/s

Drive to a reflection

Sample

Structure

Your own

Peak widthÅ⁻¹

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Crystal orientation

Tilt the crystal on its mount (rotations in the phi frame)

Point a crystal direction somewhere

point

along

then

toward

Scattering geometry

Transmission Reflection

Mounting (pitch = φ = 0)

Surface (hkl)

In-plane ref

Ref type

Ref points

UB (zero angles)

This machine's native frame at zero angles (+y up, +z beam, +x left); columns are a*, b*, c*. The six-circle panel shows its own UB in its own frame — the two are different datums.

Display

Colour map

Contrastx1

drag orbit · right-drag or shift-drag pan · wheel zoom

100%

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