TY - JOUR
T1 - Transmission of ultra-cold neutrons through guides coated with materials of high optical potential
AU - Daum, M.
AU - Franke, B.
AU - Geltenbort, P.
AU - Gutsmiedl, E.
AU - Ivanov, S.
AU - Karch, J.
AU - Kasprzak, M.
AU - Kirch, K.
AU - Kraft, A.
AU - Lauer, T.
AU - Lauss, B.
AU - Müller, A. R.
AU - Paul, S.
AU - Schmidt-Wellenburg, P.
AU - Zechlau, T.
AU - Zsigmond, G.
PY - 2014/3/21
Y1 - 2014/3/21
N2 - We have measured the transmission of ultra-cold neutrons (UCN) through tubes coated on the inside with materials of high optical potentials. The best transmission value, T, normalised to 1 m long UCN guides was obtained with a beryllium coated quartz guide, T=(99.0±1.0)%. Furthermore, excellent transmission coefficients were found for (i) a glass tube coated with NiMo(88/12), T=(97.3 ±0.6)%, (ii) a NiMo(85/15) guide made by the replication technique, T=(97.1 ±0.8)% and (iii) a glass guide coated with NiMo(82/18), T=(96.3 ±2.1)%. The results demonstrate that UCN guides made from coated glass tubes have the same excellent transmission properties as those produced with the replication technique. They are, however, significantly cheaper.
AB - We have measured the transmission of ultra-cold neutrons (UCN) through tubes coated on the inside with materials of high optical potentials. The best transmission value, T, normalised to 1 m long UCN guides was obtained with a beryllium coated quartz guide, T=(99.0±1.0)%. Furthermore, excellent transmission coefficients were found for (i) a glass tube coated with NiMo(88/12), T=(97.3 ±0.6)%, (ii) a NiMo(85/15) guide made by the replication technique, T=(97.1 ±0.8)% and (iii) a glass guide coated with NiMo(82/18), T=(96.3 ±2.1)%. The results demonstrate that UCN guides made from coated glass tubes have the same excellent transmission properties as those produced with the replication technique. They are, however, significantly cheaper.
KW - Ultra-cold neutron guides
KW - Ultra-cold neutron transmission
KW - Ultra-cold neutrons
UR - http://www.scopus.com/inward/record.url?scp=84892754485&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2013.12.050
DO - 10.1016/j.nima.2013.12.050
M3 - Article
AN - SCOPUS:84892754485
SN - 0168-9002
VL - 741
SP - 71
EP - 77
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -