Absolute efficiency measurements with the B-10 based Jalousie detector

作者：Modzel G^*; Henske M; Houben A; Klein M; Koehli M; Lennert R; Meven M; Schmidt C J; Schmidt U; Schweika W

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2014, 743: 90-95.

DOI：10.1016/j.nima.2014.01.007

• Neutron detector
• 10-Boron
• 3-He alternative
• Jalousie
• POWTEX
• Neutron diffraction

The B-10 based Jalousie detector is a replacement for He-3 counter tubes, which are nowadays less affordable for large area detectors due to the He-3 crisis. In this paper we investigate and verify the performance of the new B-10 based detector concept and its adoption for the POWTEX diffractometer, which is designed for the detection of thermal neutrons with predicted detection efficiencies of 75-50% for neutron energies of 10-100 meV, respectively. The predicted detection efficiency has been verified by absolute measurements using neutrons with a wavelength of 1.17 angstrom (59 meV).

• 出版日期2014-4-11