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IN16B

IN16 is a sub-micro-eV energy resolution backscattering spectrometer with a very high count rate and wider dynamic range. IN16B will bring it a Phase Space Transformation (PST) chopper and a new analyser resulting in a double energy transfer range at equivalent energy resolution and a double counting rate.

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Characteristics

Characteristics

guide hall nº1, cold neutron guide H112

beam size at sample

30 x 30 mm2

sample environment

furnace

300 - 1300 K

cryofurnace (cryostat)

1.8 K - 560 K (300 K)

detectors

multidetector array (16 tubes with vertical position sensitivity)

+ 2 3He counters or up to 8 3He single counters; 2 monitors

For diffraction: not yet defined

instrument configurations


high resolution

low resolution

high Q

best resolution

monochromator

Si(111)

Si(111)

Si(311)

GaAS(002)
option

analysers

Si(111)

Si(111)

Si(311)

flux at the sample

not yet measured

incident energy (meV)

2.08

2.08

7.63


not

yet

decided

incident wavelength (Å)

6.271

6.271

3.275

energy resoution (μeV)

∼0.35

∼0.9

∼3

energy transfer (μeV)

±32

±32

±59

Q-range (Å-1)

0.1 - 1.9

0.1 - 1.9

0.3 - 3.7

IN16 was on H53, IN16B will be on H112

  • more efficient guide optics and band width selection
  • new component: Phase Space Transformation (PST) chopper
  • more solid angle
  • wider dynamic range: new Doppler
  • lower background : gain fom vacuum housing