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The Multiple Disk Chopper Neutron Time-of-Flight Spectrometer at Nist

  • Felix B. Altorfer (a1) (a2), Jeremy C. Cook (a1) (a2) and John R. D. Copley (a2)


A highly versatile multiple disk chopper neutron time-of-flight spectrometer is being installed at the Cold Neutron Research Facility of the National Institute of Standards and Technology. This new instrument will fill an important gap in the portfolio of neutron inelastic scattering spectrometers in North America. It will be used for a wide variety of experiments such as studies of magnetic and vibrational excitations, tunneling spectroscopy, and quasielastic neutron scattering investigations of local and translational diffusion. The instrument uses disk choppers to monochromate and pulse the incident beam, and the energy changes of scattered neutrons are determined from their times-of-flight to a large array of detectors. The disks and the guide have been designed to make the instrument readily adaptable to the specific performance requirements of experimenters. We present important aspects of the design, as well as estimated values of the flux at the sample and the energy resolution for elastic scattering. The instrument should be operational in 1996.



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1 The ColdNeutron Research Facility, J. Res. Natl. Inst. Stand. Technol. 98 (1993).
2 Kamitakahara, W. A., Rush, J.J., Rowe, J. M. and Prask, H. J., this volume.
3 Guide to neutron research facilities, edited by Ibel, K., (Institut Laue Langevin, Grenoble, France, 1994), p. 102.
4 Hautecler, S., Legrand, E., Vansteelandt, L., D’Hooghe, P., Rooms, G., Seeger, A., Schalt, W. and Gobert, G., Neutron Scattering in the Nineties (IAEA, Vienna, 1985), p. 211.
5 Lechner, R. E., National Laboratory for High Energy Physics (Japan), KEK Report 90-25 (March 1991), Vol. 2, p. 717.
6 Williams, R. E., Rowe, J. M. and Kopetka, P., Trans. Am. Nucl. Soc. 66, 169 (1992); R. E. Williams, M. Blau and J. M. Rowe, Trans. Am. Nucl. Soc. 69, 401 (1993).
7 Copley, J. R. D., J. Neutron Research 2,95 (1994).
8 Ref[l],p.71.
9 Copley, J. R. D., Physica B 180& 181, 914 (1992); J. R. D. Copley, Nucl. Instr. and Meth. A 303, 332 (1991).
10 Copley, J. R. D., Nucl. Instr. and Meth. A 291, 519 (1990).
11 Copley, J. R. D. and Cook, J. C., Nucl. Instr. and Meth. A 345, 313 (1994).
12 Windsor, C. G., Pulsed Neutron Scattering (Taylor and Francis Ltd, London, 1981).

The Multiple Disk Chopper Neutron Time-of-Flight Spectrometer at Nist

  • Felix B. Altorfer (a1) (a2), Jeremy C. Cook (a1) (a2) and John R. D. Copley (a2)


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