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 10B 4Clayers (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. Characterization of the prototype showed neutron efficiency to be εn = for 2.5 Å neutrons, which is in line with expectations from MC simulation. This result demonstrates the potential of this technique as alternative to 3He-based position sensitive detectors.
Original language | English |
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Article number | 6414613 |
Pages (from-to) | 871-878 |
Number of pages | 8 |
Journal | IEEE Transactions on Nuclear Science |
Volume | 60 |
Issue number | 2 |
DOIs | |
State | Published - 2013 |
Externally published | Yes |
Keywords
- He crisis
- Boron-lined detector
- multi-grid neutron detector