Published January 2019 | Version v1
Journal article Metadata-only

Thermal neutron distribution in the beam line tunnel of the KEK electron/positron injector linac

Creators

  • 1. High Energy Accelerator Research Organization, Tsukuba, Ibaraki (Japan)
  • 2. Tokyo Nuclear Services Co., Ltd., Tsukuba, Ibaraki (Japan)

Description

The thermal neutron flux distribution formed in the KEK electron/positron injector linac (KEK-linac) tunnel by the positron production beam operation was measured using a gold foil activation technique. The measured data were compared with the calculation results of the PHITS code. The data indicate that the thermal neutrons were locally distributed within a range of 15-20 m of the target position. The thermal neutron flux obtained using the PHITS code reproduced the experimental data at the target location. We obtained coefficient 'C' for KEK-linac tunnel from experimental result and calculation as 2.25 that is used in empirical formula to obtain thermal neutron flux, φth = C Q / S, where Q is neutron source intensity, S is the area of tunnel surface. (author)

Availability note (English)

Available from https://doi.org/10.15669/pnst.6.181

Additional details

Identifiers

DOI
10.15669/pnst.6.181;

Publishing Information

Journal Title
Progress in Nuclear Science and Technology
Journal Volume
6
Journal Page Range
p. 181-184
ISSN
2185-4823

Conference

Title
9. international symposium on radiation safety and detection technology
Acronym
ISORD-9
Dates
10-14 Jul 2017
Place
Nagoya, Aichi (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
50053334
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BEAM PRODUCTION; COMPUTERIZED SIMULATION; ELECTRON BEAMS; ELECTRON-POSITRON COLLISIONS; HIGH-PURITY GE DETECTORS; KEK LINAC; KEK PHOTON FACTORY; MONTE CARLO METHOD; NEUTRON FLUX; NUCLEI; OCCUPATIONAL SAFETY; RADIATION PROTECTION; SHIELDING; THERMAL NEUTRONS
Descriptors DEC
ACCELERATORS; BARYONS; BEAMS; CALCULATION METHODS; COLLISIONS; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; FERMIONS; GE SEMICONDUCTOR DETECTORS; HADRONS; LEPTON BEAMS; LINEAR ACCELERATORS; MEASURING INSTRUMENTS; NEUTRONS; NUCLEONS; PARTICLE BEAMS; POSITRON COLLISIONS; RADIATION DETECTORS; RADIATION FLUX; RADIATION SOURCES; SAFETY; SEMICONDUCTOR DETECTORS; SIMULATION; SYNCHROTRON RADIATION SOURCES

Optional Information

Notes
9 refs., 8 figs.