Neutrons Sciences Directorate at ORNL

POWGEN—Specifications

POWGEN schematic POWGEN schematic (larger image).

Instrument Specifications
Moderator Decoupled poison supercritical H2
Source-to-sample distance 60 m
Sample-to-detector distance 2.5-4.5 m
Detector angular coverage 30 < 2Θ < 150
Total detector coverage 6.9 m2
Bandwidth ~1 Å
Frame 1 0.1-2 Å @ 60 Hz
0.2-4 Å @ 30 Hz
Frame 5 2.2-10.2 Å @ 60 Hz
Resolution 0.001 < Δd/d < 0.016
Sample environment 24 sample changer: 12-300 K

Orange cryostat: 2-300 K

ILL furnace: 1200°C

Gas atmospheric furnace (with RGA and p02 sensor): 850°C
   

POWGEN flux on sample as a function of wavelength Flux on sample as a function of wavelength (larger image).

POWGEN resolution

Resolution Δ d/d as a function of wavelength (larger image).