Systematic investigation of background sources in neutron flux measurements with a proton-recoil silicon detector

2017 ◽  
Vol 841 ◽  
pp. 56-64 ◽  
Author(s):  
P. Marini ◽  
L. Mathieu ◽  
L. Acosta ◽  
M. Aïche ◽  
S. Czajkowski ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Silicon Detector ◽  
Systematic Investigation ◽  
Flux Measurements ◽  
Proton Recoil

A Proton Recoil Monitor for Neutron Flux Measurements

1971 ◽  
Vol 42 (2) ◽  
pp. 240-243 ◽  
Author(s):  
Ronald J. Jaszczak ◽  
R. L. Macklin ◽  
M. C. Taylor
Keyword(s):  
Neutron Flux ◽  
Flux Measurements ◽  
Proton Recoil

scholarly journals Development of a gaseous proton-recoil telescope for neutron flux measurements between 0.2 and 2 MeV neutron energy

2019 ◽  
Vol 124 ◽  
pp. 9-12
Author(s):  
Paola Marini ◽  
Ludovic Mathieu ◽  
Mourad Aïche ◽  
Serge Czajkowski ◽  
Beatriz Jurado ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Neutron Energy ◽  
Flux Measurements ◽  
Proton Recoil

scholarly journals Development of a Gaseous Proton-Recoil Detector for neutron flux measurements between 0.2 and 2 MeV neutron energy

2019 ◽  
Vol 211 ◽  
pp. 03010
Author(s):  
P. Marini ◽  
L. Mathieu ◽  
M. Aïche ◽  
T. Chiron ◽  
P. Hellmuth ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Cross Section ◽  
Neutron Energy ◽  
Elastic Cross Section ◽  
Proton Spectrum ◽  
Incident Neutron ◽  
High Background ◽  
Flux Measurements ◽  
Proton Recoil ◽  
Absolute Measurements

Absolute measurements of neutron fluence are an essential prerequisite of neutron-induced cross section measurements, dosimetric investigations and neutron beam lines characterisation. Independent and precise neutron flux measurements can be performed with respect to the H(n,p) elastic cross section. However, the use of silicon proton recoil detectors is not straightforward below incident neutron energy of 1 MeV, due to a high background in the detected proton spectrum. A new gaseous proton-recoil detector has been designed to answer the challenge. The detector is described in details and results of the commissioning tests are presented.

scholarly journals Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section

2021 ◽  
Vol 253 ◽  
pp. 11013
Author(s):  
Carole Chatel ◽  
Ludovic Mathieu ◽  
Mourad Aïche ◽  
Maria Diakaki ◽  
Gilles Noguere ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Cross Section ◽  
Neutron Energy ◽  
Cross Sections ◽  
Detection Efficiency ◽  
Silicon Detector ◽  
Fission Cross Section ◽  
Absolute Measurement ◽  
Small Time ◽  
Flux Measurements

To accurately measure neutron-induced fission cross sections, to characterize neutron-beam lines or to make dosimetric investigations, it is necessary to have high accuracy measurements of neutron fluence. It is possible to perform independent and precise neutron flux measurements with respect to the 1H(n,n)p elastic scattering cross section. The use of a silicon detector is recommended from 1 to 70 MeV neutron energy. However, it has been observed that a high electrons background forbids its use below 1 MeV. Hence, a new gaseous proton-recoil telescope is developed and characterized to overcome this limit. It should provide quasi-absolute neutron flux measurements with an accuracy around 3% and is not sensible to gamma and electrons background. It consists in two ionization chambers read by a segmented micromegas technology detection plane. The gas pressure inside is adjustable to the proton range in the detector and therefore to the neutron energy. This detector is described in details below and the newest results of its characterization are presented. A special attention is paid to detection efficiency measurements.

Neutron flux measurements around the Princeton large tokamak

1981 ◽  
Vol 185 (1-3) ◽  
pp. 321-329 ◽  
Author(s):  
G. Zankl ◽  
J.D. Strachan ◽  
R. Lewis ◽  
W. Pettus ◽  
J. Schmotzer
Keyword(s):  
Neutron Flux ◽  
Flux Measurements

Helium counters for low neutron flux measurements

2011 ◽  
Vol 7 (4) ◽  
pp. 511-514 ◽  
Author(s):  
Z. Dębicki ◽  
K. Jędrzejczak ◽  
J. Karczmarczyk ◽  
M. Kasztelan ◽  
R. Lewandowski ◽  
...  
Keyword(s):  
Neutron Flux ◽  
Flux Measurements
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