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effective neutron polariser even for large white beams. This technique was made trully operational for the 1st time in November 1996 by the historical experiment shown here. W. Heil (left) and H.Humblot (middle) ... filling station uses laser light to polarise metastable 3 He atoms by optical pumping at low pressure (1.3 mbar). The resulting ...

x H (mm2) ki/Å-1 flux/108 n cm-2s-1 PG (002) varible double focusing, mosaic 30' 290x200 2,662 4,1 6,8 10 Cu (200) variable double-focusing, anisotropic mosaic (h:25', v:10') 290x200 4,1 7 5 3.2 Si (111) ... perfect crystals, variable double focussing 230x200 2,662 4,1 3,3 4,8 Si (311) bent perfect crystals, variable double focussing 230x200 4,1 7 ...

crpd 0(1): CRYOPAD mode off (on). CRYOPAD mode off switches on normal beam mode. Polarisation state spi (spo) sets polarization in (out) spi 1: flipper_in set "spin up" (negative current) spi -1: flipper_in ... to flip par viz 0 (1) to plot count rates (polarization) during a scan in flipping mode par sps 300000 1 0 30 300 seconds (300000 µs) per ...

hall n°1, cold guide H15 λ 6 to 1.5 (Å) Incoming energy Ei 2.2 to 36.4 (meV) energy resolution ΔE 0.055 to 3.0 (meV) Energy resolution ΔE / Ei 2.5 to 15.0% Max energy transfer in % of Ei 45% Qmin (A-1) 0.4/λ ... 200 meV max momentum transfer 5.9 Å -1 vertical divergence -22 to 22° beam size at the sample 3 x 5 cm 2 flux at the sample at 5 Å 8.0 x ...

measurements as in the case of small scattering-length contrast. D4 shares the beam tube H8 with the IN1 triple-axis and Lagrange (Be-filter) spectrometers, and is therefore available for only about 50 % of

max ~ ∞ . . . max momentum transfer Q max 11.48/λo Å -1 horizontal divergence (no collim.) ~ 0.1×2×λ o [°] vertical divergence (no collim.) ~ 0.1×3×λ o [°] Collimation before sample - / 30' / 60' beam ... accommodating samples with 69 mm Ø dilution fridge (LT1) ≤ 50mK ... 1.6K vertical cryomagnet S(MV) 0 ... 2.5 Tesla and 0 ... 10 Tesla ILL orange ...

ice1)); keep_figure; lc 0 1 plot(compact(alignment_slice2)); keep_figure; lc 0 1 plot(compact(alignment_slice3)); keep_figure; lc 0 1 Define notional Bragg peaks Notional Bragg peaks = rlu bp=[1,1,0; 2 ... [0KL] at hw = 1meV % u v w hw w1 = cut_sqw(data_source,proj,0.05,0.05,[-0.05,0.05],[0.95,1.05]); plot(w1) % Optionally smooth before plotting ...

neutron-detector The detector assembly is a array of nine 1D position sensitive detectors with an angular resolution of 0.125º. The available 2θ-range is 1.5º to 140º. Because there are 7º in between two detectors

.. 3.60 Å PG 004: 1.10 ... 1.80 Å Cu 220: 0.85 ... 1.50 Å Cu 111: 1.25 ... 2.24 Å take-off angle 2θM 39 ° ... 65° resolution δ> E i / E i 3 ... 6 % flux on sample 5 x 105 cm -2 s -1 background choppers ... chopper ν max 32 000 rpm duty cycle 3 x 10 -3 beam size on sample 2 x 4 cm 2 primary collimation δθ 1° Instrument description IN4C is a ...

Cu220 ~5.0·10 7 n cm -2 s -1 for λ=0.5 Å (327 meV) / Cu220 ~0.75·10 7 n cm -2 s -1 for λ=0.35 Å (668 meV) / Cu331 Incident wavelength Continuously variable (see IN1 specifications). The typical values of ... H8 Monochromators Si(11L=1,2,3), Cu(220) and Cu(331), all 20 cm high and 23 cm wide, all with variable horizontal and vertical focussing Flux ...