Fires technical specifications
07 Jan 2010
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Technical specifications for FIRES

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Technical Summary

Moderator

Coupled hydrogen

Primary flight path

80m ballistic supermirror guide
Collimator to improve Q resolution

Secondary spectrometer

Si(111) analysers near backscattering θ ≈ 88°
2m high, 2.5m radius
Solid angle ≈ 1.9sr
Be filter
2-position sensitive detector banks

Diffraction detector

at 2θ ≈ 170°

Energy resolution

2μeV with chopper pulse
6.5μeV with moderator pulse
38μeV at 15meV energy transfer

Dynamic range

250μeV to 1000μeV

Intensity at sample

4x104 n/cm2.s.μeV (in high resolution mode)



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