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Characteristics

Guide hall n° 1, thermal guide H24
beam cross section 30 x 75 mm2
Monochromator
crystal d-spacing in Å kiin Å-1 flux in 106n cm-2s-1
PG (002) 3.355 1.3 - 3.3
2.662 9.3
Cu (111) 2.087 2.0 - 5.3
2.662 3.6
Heusler (111) 3.452 1.3 - 3.2
2.662 2.0
Collimation
α1 = (0.015/ki) rad/Å-1
α2, α3, α4 = 10', 20', 30', 40', 60' adjustable by soller collimators
Analyser
horizontally focussing PG(002)
3He detector
50 mm Ø x 12 cm

Instrument description

IN3 is a classic three-axis spectrometer on a through-going neutron guide (Fig.1). A bi-faced monochromator with PG(002) and Cu(111) with variable curvature allows vertical focussing. The IN3 pyrolytic graphite analyser can be curved horizontally, but also additional TAS analysers and instrumental options are regularly used.