We have investigated the usefulness of a curved guide for the cold neutron disk-chopper spectrometer (CNDCS), which is under construction for the Japan Proton Accelerator Research Complex (J-PARC), by Monte Carlo simulation. By comparing with a model with a straight guide and a T0 chopper, we found that the curved guide can show comparable performance with the straight guide in the whole energy range of CNDCS when L1 ≥ 30 m. Interestingly, the curved guide surpasses the straight guide in neutron flux at E ≤ 20 meV, where CNDCS is optimized, because of the loss of flux at the gap for the T0 chopper in the straight guide.
- Chopper spectrometer
- Neutron transport
- Spallation neutron source
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering