Absolute efficiency measurements with the {sup 10}B based Jalousie detector Modzel, G., E-mail: modzel@physi.uni-heidelberg [Physikalisches Institut, Universität Heidelberg, Neuenheimer Feld 226, 69120 Heidelberg (Germany)]; Henske, M. [CDT CASCADE Detector Technologies GmbH, Hans-Bunte-Str. 8–10, 69123 Heidelberg (Germany)]; Houben, A. [Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)]; Klein, M. [Physikalisches Institut, Universität Heidelberg, Neuenheimer Feld 226, 69120 Heidelberg (Germany)]; CDT CASCADE Detector Technologies GmbH, Hans-Bunte-Str. 8–10, 69123 Heidelberg (Germany)]; Köhli, M.; Lennert, P. [Physikalisches Institut, Universität Heidelberg, Neuenheimer Feld 226, 69120 Heidelberg (Germany)]; Meven, M. [Heinz Maier-Leibnitz Zentrum (MLZ), 85747 Garching (Germany)]; Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science (JCNS), Outstation at MLZ, 85747 Garching (Germany)]; Schmidt, C. J. [CDT CASCADE Detector Technologies GmbH, Hans-Bunte-Str. 8–10, 69123 Heidelberg (Germany)]; GSI Detector Laboratory, Planckstr. 1, 64291 Darmstadt (Germany)]; Schmidt, U. [Physikalisches Institut, Universität Heidelberg, Neuenheimer Feld 226, 69120 Heidelberg (Germany)]; Schweika, W. [Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science (JCNS), 52425 Jülich (Germany)]; European Spallation Source ESS AB, SE-22100 Lund (Sweden)] 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BORON 10; DESIGN; EFFICIENCY; HELIUM 3; MEV RANGE; NEUTRON DETECTION; NEUTRON DETECTORS; NEUTRON DIFFRACTION; PERFORMANCE; THERMAL NEUTRONS The {sup 10}B based Jalousie detector is a replacement for {sup 3}He counter tubes, which are nowadays less affordable for large area detectors due to the {sup 3}He crisis. In this paper we investigate and verify the performance of the new {sup 10}B 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 Å (59 meV) Available from http://dx.doi.org/10.1016/j.nima.2014.01.007 Netherlands 2014-04-11 English Journal Article Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; Journal Volume: 743; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA) Medium: X; Size: page(s) 90-95 https://doi.org/10.1016/J.NIMA.2014.01.007 PII: S0168-9002(14)00015-1 [] 743 Journal ID: ISSN 0168-9002; CODEN: NIMAER; Other: PII: S0168-9002(14)00015-1; TRN: NL15R3149019700 NLN 2015-03-03 22313526