This title appears in the Scientific Report :
2020
Considerations about guide configuration of the TOF diffractometer at high brilliance source
Considerations about guide configuration of the TOF diffractometer at high brilliance source
A time of flight diffractometer for the study of the nanoscale and disordered materials samples with a high neutron flux is envisioned for the HBS. To transfer neutrons from moderator to sample over a long-distance effectively, several neutron guide systems, including a truly elliptical guide and ba...
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Personal Name(s): | Ma, Zhanwen |
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Lieutenant, K. / Voigt, J. | |
Contributing Institute: |
Streumethoden; JCNS-2 High Brilliance Source; JCNS-HBS JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Imprint: |
2020
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Conference: | The Japanese RIKEN Center for Advanced Photonics (RAP) and the Jülich Centre for Neutron Science (JCNS) fourth joint workshop on compact accelerator-driven neutron sources (CANS) special webinar, Forschungszentrum Jülich (Germany), 2020-06-22 - 2020-06-24 |
Document Type: |
Conference Presentation |
Research Program: |
Jülich Centre for Neutron Research (JCNS) Materials and Processes for Energy and Transport Technologies Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States Controlling Collective States |
Publikationsportal JuSER |
A time of flight diffractometer for the study of the nanoscale and disordered materials samples with a high neutron flux is envisioned for the HBS. To transfer neutrons from moderator to sample over a long-distance effectively, several neutron guide systems, including a truly elliptical guide and ballistic guides with elliptical diverging and focusing sections were studied via Monte-Carlo simulation, varying the moderator to guide distance and the guide entry cross section. The neutron flux, spatial distribution, and divergence distribution and brilliance transfer ratio with different guide shape geometries were calculated and discussed. Simulation results indicate that a well-designed ballistic guide system can achieve a comparable neutron flux (96.3% of the true elliptical guide system) and brilliance transfer ratio compared to the true elliptical guide. |