Temperature Dependence of Thermal Neutron Detection Performance of BF3 Proportional Counters

Shimizu, Eiji; Usui, Shuzo; Ohkado, Hideo; Hayashi, Yoshimitsu; Nakatani, H.

doi:10.1109/tns.1983.4332380

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…The preamplifiers need to be sufficiently insensitive to temperature increases experienced when the instrument is exposed to spent nuclear fuel in order for it to be reliably deployed. Though the acceptable operating temperature for 3 He tubes has been shown to extend as high as 200 o C [40], which is considerably higher than any anticipated environment for spent fuel, the effect of temperature on the 3 He tubes themselves also needed to be considered, as pulse amplitude increases and pulse resolution decreases with increasing temperature [41]. Six measurements of total neutron count rate as a function of time were conducted at 20 V intervals between 1600 and 1700 V. Once the preamplifiers were gain-matched as best possible, a variety of temperature measurements were taken before starting 252 Cf measurements.…”

Section: Temperature Driftsmentioning

confidence: 99%

Utilization of the Differential Die-Away Self-Interrogation Technique for Characterization and Verification of Spent Nuclear Fuel

Trahan¹

2016

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SINGLE DETECTOR DEFINITION LEFT BANK ***** c ***** 4 atm =-4.99e-4, atm =-7.488e-4, 7.5 atm =-9.359e-4 g/cc 10 atm-1.248e-3 ***** 940-7.488e-4-901 904-905 u=500 imp:n=1 $ He3 tube at 6.0 atm 901 870-2.699 901-902-906 u=500 imp:n=1 $ Al tube 902 920-9.58e-4 902 u=500 imp:n=1 $ air gap around He-3 tube 903 870-2.699-902 906 u=500 imp:n=1 $ Void above each tube 904 940-7.488e-4-901-904 u=500 imp:n=1 $ Lower dead 905 940-7.488e-4-901 905-906 u=500 imp:n=1 $ Upper dead c c SINGLE DETECTOR DEFINITION LEFT BANK NON-DDSI tube c ***** 4 atm =-4.99e-4, 6 atm =-7.488e-4, 7.5 atm =-9.359e-4 g/cc 10 atm-1.248e-3 ***** 950 940-7.488e-4-911 904-905 u=501 imp:n=1 $ He3 tube at 6.0 atm 951 870-2.699 911-912-906 u=501 imp:n=1 $ Al tube 952 920-9.58e-4 912 u=501 imp:n=1 $ air gap around He-3 tube 953 870-2.699-912 906 u=501 imp:n=1 $ Void above tube 954 940-7.488e-4-911-904 u=501 imp:n=1 $ Lower dead 955 940-7.488e-4-911 905-906 u=501 imp:n=1 $ Upper dead c c DETECTOR ASSEMBLY, LEFT BANK 800 0 900 u=2 fill=500 imp:n=1 $ Initial detector # 60 (at left) 811 0-910 u=2 fill=501 imp:n=1 $ NON-DDSI TUBE c Left bank of He-3 tubes, first row 801 like 800 but trcl=(0-3.5 0) u=2 $ 58 802 like 800 but trcl=(0-7.0 0) u=2 $ 56 803 like 800 but trcl=(0-10.5 0) u=2 $ 54 804 like 800 but trcl=(0-14.0 0) u=2 $ 52 805 like 800 but trcl=(0-17.5 0) u=2 $ 50 806 like 800 but trcl=(0-21.0 0) u=2 $ 48 807 like 811 but trcl=(3 12.25 0) u=2 $ 62 DOWN IN OCTOBER c Left bank of He-3 tubes, second row 808 like 800 but trcl=(-3.0 1.75 0) u=2 $ 61 809 like 811 but trcl=(0 7.00 0) u=2 $ 59 DOWN IN OCTOBER 810 like 800 but trcl=(-3.0-5.25 0) u=2 $ 57 812 like 800 but trcl=(-3.0-12.25 0) u=2 $ 53 813 like 800 but trcl=(-3.0-15.75 0) u=2 $ 51 814 like 800 but trcl=(-3.0-19.25 0) u=2 $ 49

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Section: Temperature Driftsmentioning

confidence: 99%

Utilization of the Differential Die-Away Self-Interrogation Technique for Characterization and Verification of Spent Nuclear Fuel

Trahan¹

2016

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“…Before charging the cathode tube with the counting gas, the tube was evacuated by a turbomolecular pump through a bellows seal valve connected to the cathode tube. When the gas pressure at the valve became 2 X I0- 6 Pa after baking at about 420 K for 24 h, gas leakage was checked by a quadrupole mass analyzer. The cathode tube was then charged with the counting gas at 1 atm and was sealed off by the valve.…”

Section: Counter Fabricationmentioning

confidence: 99%

Development of position sensitive helium-3 proportional counter for thermal neutrons with novel signal readout.

Uritani

Mori

Watanabe

et al. 1990

J. Nucl. Sci. Technol.

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A position sensitive 3 He proportional counter for thermal neutrons with a novel signal readout method which has two pre-amplifiers at only one end of the counter body has been developed. It has an advantage for usage in a special environment, such as in a subcritical facility or in water, or for insertion into a narrow space. The characteristics of the counter were evaluated with thermal neutrons. The position resolution was 7 mm with an effective length of 1,200 mm. The integral non-linearity of position signal was less than 0.5%.

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Temperature dependence of BF3 proportional counters

Sakamoto

Morioka

1994

Nuclear Instruments and Methods in Physics Research Section A:

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Temperature Dependence of Thermal Neutron Detection Performance of BF3 Proportional Counters

Cited by 7 publications

References 4 publications

Utilization of the Differential Die-Away Self-Interrogation Technique for Characterization and Verification of Spent Nuclear Fuel

Utilization of the Differential Die-Away Self-Interrogation Technique for Characterization and Verification of Spent Nuclear Fuel

Development of position sensitive helium-3 proportional counter for thermal neutrons with novel signal readout.

Temperature dependence of BF3 proportional counters

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