Published October 2015 | Version v1
Journal article Metadata-only

Study of fission ionization chamber in CSNS flux monitor system

Creators

  • 1. Key Laboratory of Nuclear Data Measurement and Evaluation Technology, China Institute of Atomic Energy, Beijing (China)
  • 2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing (China)

Description

Background: The fission ionization chamber is constituted by 235U and 238U materials as monitor in China Spallation Neutron Source (CSNS) reverse angle. Purpose: This paper mainly introduces the whole system time precision influence on the energy resolution and the actual measurement corrections. Method: The flux energy spectrum is measured accurately using n-TOF method. Results: The time resolution which is caused by energy resolution is proportional to 3/2 power energy, and the correction is induced less than 0.1% due to differences of the standard cross section energy. Conclusion: The experimental results show that the design of the ionization chamber can meet the requirements of CSNS neutron flux measurements. (authors)

Additional details

Identifiers

DOI
10.11889/j.0253-3219.2015.hjs.38.100403;

Publishing Information

Journal Title
Nuclear Techniques
Journal Volume
38
Journal Issue
10
Journal Page Range
[6 p.]
ISSN
0253-3219

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
49102387
Subject category
S43: PARTICLE ACCELERATORS;
Descriptors DEI
ACCURACY; CHINA SPALLATION NEUTRON SOURCE; CROSS SECTIONS; DESIGN; ENERGY RESOLUTION; ENERGY SPECTRA; FISSION; IONIZATION; IONIZATION CHAMBERS; MONITORS; NEUTRON FLUX; NEUTRONS; TIME RESOLUTION; URANIUM 235; URANIUM 238
Descriptors DEC
ACCELERATOR NEUTRON SOURCE FACILITIES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYONS; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MEASURING INSTRUMENTS; MINUTES LIVING RADIOISOTOPES; NEUTRON SOURCE FACILITIES; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; RADIATION DETECTORS; RADIATION FLUX; RADIOISOTOPES; RESOLUTION; SPALLATION NEUTRON SOURCE FACILITIES; SPECTRA; SPONTANEOUS FISSION RADIOISOTOPES; TIMING PROPERTIES; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
9 figs., 1 tab., 7 refs.; http://dx.doi.org/10.11889/j.0253-3219.2015.hjs.38.100403