The ID19 monochromator is built with 3 sets of crystals in one vacuum chamber (= triple-monochromator) installed in the beam-hutch MH in the ID19 satellite building.

It is controlled by a dedicated BLISS-session.

The 3 sets are:

1) pair of bent Si111-crystals in Laue-Laue-geometry (benders c1br/c1bl, c2br/c2bl)

2) pair of multi-layer crystals

3) pair of perfect Si111-crystals in Bragg-Bragg-geometry