Current design of disk chopper time-of-flight spectrometer at KAERI

Article type: Research Article

Authors: So, J.-Y.^; | Moon, M.K. | Cho, S.-J. | Choi, Y-H. | Lee, C-H. | Park, J.-G.

Affiliations: Neutron Physics Laboratory, Korea Atomic Energy Research Institute, Daejon 305-600, Korea | Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-747, Korea | Department of Physics and Institute of Basic Science, SungKyunKwan University, Suwon 440-746, Korea

Note: [] Corresponding author. Tel.: +82-31-290-5955. Fax: +82-31-290-7055. Email: [email protected]

Abstract: HANARO is a 30 MW multi-purpose research reactor located at the Korea Atomic Energy Research Institute (KAERI) with a maximum thermal flux of 5.4 × 1014 n/cm2/s. It reached first criticality in 1995. As part of its present cold neutron project, the KAERI selected disk chopper time-of-flight (DC-TOF) spectrometer as one of the day-one instruments. In this report, we present the current design of our DC- TOF. In order to optimize the design parameters of DC-TOF and its guide layout, we made full use of two Monte-Carlo simulation codes, VITESS and McStas. We have also optimized technical parameters using analytical tools, whenever possible.

Keywords: Inelastic neutron scattering, Disk chopper time of flight, Monte-Carlo simulation, Diffractometer

DOI: 10.1080/10238160601045524

Journal: Journal of Neutron Research, vol. 15, no. 1, pp. 23-30, 2007