Published January 1, 2007 | Version v1
Journal article Metadata-only

A method for evaluating the transmission properties of ultracold-neutron guides

Creators

  • 1. Physik-Department, Technische Universitaet Muenchen, Garching D-85748 (Germany) and PNPI RAS, Gatchina, Leningrad district 188300, Russia (Russian Federation)
  • 2. Physik-Department, Technische Universitaet Muenchen, Garching D-85748 (Germany)
  • 3. Institut Laue-Langevin, 38042 Grenoble (France)

Description

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 3.4m long aluminum tube coated with a double layer of stainless steel (thickness 500nm) and beryllium (thickness 250nm), 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)x10-3 and f=0.18+/-0.04. Systematic errors and a possible improvement of the method are discussed

Additional details

Identifiers

DOI
10.1016/j.nima.2006.09.104;
PII
S0168-9002(06)01765-7;

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Journal Volume
570
Journal Issue
1
Journal Page Range
p. 101-106
ISSN
0168-9002
CODEN
NIMAER

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38038288
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
BERYLLIUM; DIFFUSE SCATTERING; ERRORS; FRM-II REACTOR; NEUTRON GUIDES; STAINLESS STEELS; THICKNESS; ULTRACOLD NEUTRONS
Descriptors DEC
ALKALINE EARTH METALS; ALLOYS; BARYONS; CARBON ADDITIONS; COHERENT SCATTERING; COLD NEUTRONS; DIFFRACTION; DIMENSIONS; ELEMENTARY PARTICLES; ELEMENTS; ENRICHED URANIUM REACTORS; FERMIONS; HADRONS; HEAVY WATER MODERATED REACTORS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; METALS; NEUTRONS; NUCLEONS; POOL TYPE REACTORS; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; SCATTERING; STEELS; THERMAL REACTORS; TRANSITION ELEMENT ALLOYS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Copyright
Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.