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close-focus f0.95 lenses inside a light-tight enclosure. The neutrons pass through this enclosure along a light-tight pipe through the centre of two opposing scintillators. A pair of cameras view each facet ... larger than that of VIVALDI, will permit a wider range of sample environment, including large pressure cells and cryomagnets. Ref .: B. ...

with a collimation angle of 0.4°, and to optimize convergence at three detector positions (2, 4, 6 m from the sample). A coarse resolution option is also available, without honeycomb collimator. A Fermi ... specially developed for some of the BRISP components. Main components A Soller collimator defining the beam impinging on the monochromator, ...

hall. The H7 site starts at about 8 m from the ILL reactor core that provides a nominal nuclear power of 58.3 MW, leading to a neutrino flux at the Ricochet detectors 8.8 m from the reactor core of about ... 6 m long and 3.5 m high. It is located below a water channel providing about 15 m water equivalent (m.w.e.) against cosmic radiations. It is ...

crystal), the illuminated sample volume can be varied from a few cm3 to a few mm3. The signal-to-background ration is significantly improved placing a Radial Oscillating Collimator in the way of the diffracted ... moving around the experimental area marble floor (“Tanzboden”), which permits a continuous change of wavelength. Beam conditioning A set ...

flux on the sample position or to produce a less divergent beam for single-crystal measurements. A straight slit Fermi chopper produces short neutron pulses with a high pulse-repetition rate, and is normally ... the banks are separated by a space of 22 mm, where Cd vanes are placed to reduce parasitic scattering. The detector tubes are mounted ...

spins in a sample over time. For a spin-echo measurement we exploit the fact that a neutron has a spin which reacts to magnetic fields. In a magnetic field the spins rotate like a clock with a speed that ... create a field that is symmetrical about the sample and the same for all incoming and scattered neutrons on a horizontal plane. Therefore, we ...

Flatcone The FlatCone analyzer-detector unit covers a scattering angle of about 75 degrees, separated into 31 individual channels. Every channel is equipped with a bent Si-111 analyzer with fixed final energy ... energy of 4 meV. By rotating the crystal the complete scattering plane can be mapped out in a very efficient way for energy transfers up ...

mode with a focussing pyrolytic graphite monochromator for studies of magnetic layered systems - high-flux low-resolution unpolarized option for soft-matter investigations (under construction). A two dimensional ... dimensional position sensitive detector allows time efficient collection of off-specular data. With a maximum scattering angle of ...

Interferometry The channel-cut monochromator offers a [220] reflection in triple bounce geometry optimized for 30° Bragg angle. The triple Bragg reflection leads to a sharper rocking curve by suppressing the tails ... limited only by the strength of the scattering signal. A typical geological sample needs several hours to be measured at Q = 10^-3 ...

Fission products originating from a target of a fissile isotope placed near the core of the reactor in a thermal neutron flux of 5.3 x 10 14 n cm -2 s -1 are selected by a combination of magnetic and electric ... about 14 MeV, a 100 cm stretch along the parabola is illuminated by one type of mass at the exit position of the spectrometer. By a ...