Commissioning of neutron triple-axis spectrometers at HANARO

• Main Authors: Haruhiro Hiraka, Jisung Lee, Byoungil Jeon, Baek-Seok Seong, Sangjin Cho
• Format: Article
• Language: English
• Published: Elsevier 2020-09-01
• Series: Nuclear Engineering and Technology
• Subjects: Neutron scattering; Triple-axis spectrometer; HANARO; Radiation shield; Neutron collimator
• Online Access: http://www.sciencedirect.com/science/article/pii/S1738573319308241

We report the status of the cold neutron triple-axis spectrometer (Cold TAS) and thermal neutron triple-axis spectrometer (Thermal TAS) installed at HANARO. Cold TAS, whose specifications are standard across the world, is in the final phase of commissioning. Proper instrument operation was confirmed through a feasibility study of phonon measurements and data analyses with resolution convolution. In contrast, Thermal TAS is in the initial phase of commissioning, and improvement of the monochromator drum is now in progress from the viewpoint of radiation shielding. In addition, we report recent activities in the development of neutron basic elements, that is, film-coated Si-wafer collimators, which are promising for use in triple-axis spectroscopy, particularly in Cold TAS.