The new chopper spectrometer at LANSCE, PHAROS
Conference
·
OSTI ID:6705220
We describe the new chopper spectrometer PHAROS under design at Los Alamos. It is intended to provide 0.5% incident energy resolution for incident energies between 50 MeV and 2 eV. This will be achieved with a methane moderator and a 20m incident flight path on Flight Path 16 of the Los Alamos Neutron Scattering Center. The secondary flight path will be 4m for scattering angles between 10/degree/ and 140/degree/. For small scattering angles (down to 0.5/degree/), the secondary flight path can be extended to 10m. We include results of preliminary tests on phasing a prototype chopper and the Proton Storage Ring. These show that phasing can be achieved and that the width of the transmitted neutron pulse is in reasonable agreement with calculation. 5 refs., 4 figs., 1 tab.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6705220
- Report Number(s):
- LA-UR-88-3664; CONF-8810182-6; ON: DE89003606
- Country of Publication:
- United States
- Language:
- English
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