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DMC: COLD NEUTRON POWDER DIFFRACTOMETER
Technical Specifications
Sample environment
- 3He/4He dilution refrigerator, Tmin = 50 mK
- He cryostats, 1.5 K ≤ T ≤ 325 K
- Cryo-furnace, 2 K ≤ T ≤ 600 K
- Closed-cycle cooling machines, 15 K ≤ T ≤ 475 K
- Cryo-magnet MA6, 2.8 Tesla (vertical), 1.8 K ≤ T ≤ 300 K
- Cryo-magnet MA4, 4 Tesla (vertical), 4.2 K ≤ T ≤ 80 K
- Cryo-magnet MA02, 1.8 Tesla (horizontal), 1.8 K ≤ T ≤ 300 K
- Furnaces, Tmax = 1800 K
- Clamp pressure cell, Pmax = 15 kbar, 2 K ≤ T ≤ 300 K
- Paris-Edinburgh press (opposed anvils), Pmax = 100 kbar, 3 K ≤ T ≤ 300 K
Position
- Guide hall, at the cold neutron guide RNR12, supermirrorguide (m=2, height 12 cm, width 2 cm)
Monochromators
- Pyrolythic Graphite (002), vertically focusing, 5 crystals of 2.5 cm height
- Germanium (311, 511, 400), vertically focusing, 9 crystals of 1.4 cm height (optional)
Wavelengths
- Any wavelength between 2.3 Å and 6 Å is possible, standard wavelengths (PG002 monochromator) are 2.45 Å, 3.8 Å, 4.2 Å and 4.5 Å
Collimations
- Optional primary and secondary collimation (Gd-O Soller collimators)
- Oscillating collimator system between sample and detector: 73 Cd coated steel plates of 0.02 cm thickness, angular distance 1.2°
Detector system
- "Banana" type multidetector, linear position-sensitive BF3 counter (LCC 400CP, Thompson-CSF)
- 400 detectors with angular separation of 0.2°, covering simultaneously a scattering angle range of 79.8°, radius 1.5 m
- positioning of detector on air cushions for intermediate steps or larger scattering angle range
Instrument software
- SICS (SINQ Instrument Control Software) for control of the measurement
- SEA, TECS (Temperature Control Software) for control of sample environment
- FIT, FULLPROF, ... for data analysis
Resolution and Q-Range
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