Title of article
A method for evaluating the transmission properties of ultracold-neutron guides
Author/Authors
Altarev، نويسنده , , I. and Frei، نويسنده , , A. and Geltenbort، نويسنده , , P. and Gutsmiedl، نويسنده , , E. A. Hartmann، نويسنده , , F.J. and Müller، نويسنده , , A.R. and Paul، نويسنده , , S. and Plonka، نويسنده , , C. and Tortorella، نويسنده , , D.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
6
From page
101
To page
106
Abstract
A method for evaluating the properties of guides for ultracold neutrons (UCN) has been developed as an extension of the common technique for measuring UCN losses in the sample contained between two diaphragms. With two measurements at both ends of the guide one can evaluate both, the loss probability μ per wall collision and the probability f for diffuse scattering from the wall. A 3.4 m long aluminum tube coated with a double layer of stainless steel (thickness 500 nm) and beryllium (thickness 250 nm), proposed as a UCN guide for the Mini-D2 UCN source at the FRM-II reactor at Garching, was tested. We obtained μ = ( 1.1 ± 0.1 ) × 10 - 3 and f = 0.18 ± 0.04 . Systematic errors and a possible improvement of the method are discussed.
Keywords
Ultracold neutrons , Neutron guide , UCN
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2007
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2202417
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