Title :
Multi-Grid as an Alternative to
for Large Area Neut
Author :
Birch, John ; Buffet, J.C. ; Correa, Javier ; Van Esch, Patrick ; Guerard, Bruno ; Hall-Wilton, Richard ; Hoglund, Carina ; Hultman, L. ; Khaplanov, Anton ; Piscitelli, Francesco
Author_Institution :
Thin Film Phys. Div., Linkoping Univ., Linkoping, Sweden
Abstract :
Despite its present shortage, 3He continues to be the most common neutron converter for detectors in neutron scattering science. However, it is obvious that the development of large area neutron detectors based on alternative neutron converters is rapidly becoming a matter of urgency. In the technique presented here, grids each comprising 28 10B4C layers (each 1 μm thick) are used to convert neutrons into ionizing particles which are subsequently detected in proportional gas counters. The total active area of the prototype is 8 cm × 200 cm. To instrument this detector 4.6 m2 of 10B-enriched boron carbide were coated onto aluminium blades using a DC magnetron sputtering machine.
Keywords :
neutron detection; proportional counters; 10B-enriched boron carbide; 10B4C multigrid; 3He-based position sensitive detectors; DC magnetron sputtering machine; alternative neutron converters; aluminium blades; common neutron converter; large area neutron detectors; neutron scattering science; proportional gas counters; Aluminum; Blades; Coatings; Detectors; Electron tubes; Neutrons; Wires; $^{3}{rm He}$ crisis; Boron-lined detector; multi-grid neutron detector;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2012.2227798