Spin-echo spectrometer with time-of-flight option and focusing option
Guide hall n°2, cold polarising guide H511
Neutron beam characteristics
diameter at sample position
6 ... 25 Å
monochromatisation Δλ/λ (FWHM)
15% (velocity selector)
incident beam divergence
V cavity, 1 m long (provided by HZB Berlin)
FeCo-Si supermirrors on Si substrate
FeCo supermirrors (provided by HZB Berlin)
max. field of solenoid
max. field integral
32 x 32 pixels, each 1 cm2
32 x 32 cm2
angular range θ
2° ... 70° (Cryostat)
|2° ... 30° (Oven, Sample Changer)|
2 x 10-3 rad
The spin-echo spectrometer IN15 is a conventional spin echo spectrometer using a velocity selector and a neutron guide between selector and precession magnet.
A wide wavelength band is used covering a large area in q-time space even for one single detector position).
Normal mode of operation
Due to the use of neutrons of long wavelength (6 Å < λ < 25 Å) IN15 offers a better energy resolution (proportional to λ-3 ) than its predecessor IN11 and it reaches considerably lower q-values (proportional to λ-1 ).
Summary of the performance at λ = 17.3 Å
- The intensity is sufficiently high for typical small-angle scattering experiments.
- Maximum Fourier Time of 1000 ns
- Q-range from 0.01 Å-1 up to 0.42 Å-1