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Title: Evaluation, Refurbishment, and Characterization of Fast Neutron Scintillators for the TREAT Fuel Motion Monitoring System

Abstract

This paper details work being performed at the Idaho National Laboratory (INL) to evaluate, refurbish, and characterize proton-recoil scintillation (PRS) detectors utilized in a 360 channel array for the measurement of fast neutrons in a standalone system historically called a hodoscope located in the Transient Reactor Test Facility (TREAT). The TREAT hodoscope serves as the primary Fuel Motion Monitoring System for documenting real time fuel displacement during transient experiments. The detectors in the hodoscope have stood dormant for over 20 years and significant degradation must be addressed before the system can be brought back to operational status. The refurbishment process begins by decoupling the PRS from their matched photo multiplier tubes (PMTs) and treating the PRS with ethanol. This process cleans the surfaces, removing paint and legacy labels/ markings. During this procedure many physical variations can be observed. After cleaning, the PRS are physically measured using a digital caliper and the dimensions documented. Following this, a well-controlled 280nm LED light source is used to stimulate the PRS to produce an emission spectrum inside an integration sphere. This emission spectrum is then measured using a UV enhanced optical spectrometer. Spectral measurements are recorded from 185 nm to 580 nm in 0.4more » nm steps. The PRS are then lightly sanded on the non-PMT mating surfaces and painted with commercially available reflective paint. A final emission spectrum is recorded for each PRS after painting.« less

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Idaho National Laboratory
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1478760
Report Number(s):
INL/CON-17-41892-Rev000
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: 2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, Atlanta, GA, 10/21/2017 - 10/28/2017
Country of Publication:
United States
Language:
English
Subject:
11 - NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Proton Recoil Scintillator; TREAT; Hodoscope

Citation Formats

Hix, Jay D., Chichester, David L., Watson, Scott M., Johnson, James T., and Thompson, Scott J. Evaluation, Refurbishment, and Characterization of Fast Neutron Scintillators for the TREAT Fuel Motion Monitoring System. United States: N. p., 2017. Web.
Hix, Jay D., Chichester, David L., Watson, Scott M., Johnson, James T., & Thompson, Scott J. Evaluation, Refurbishment, and Characterization of Fast Neutron Scintillators for the TREAT Fuel Motion Monitoring System. United States.
Hix, Jay D., Chichester, David L., Watson, Scott M., Johnson, James T., and Thompson, Scott J. Sun . "Evaluation, Refurbishment, and Characterization of Fast Neutron Scintillators for the TREAT Fuel Motion Monitoring System". United States. https://www.osti.gov/servlets/purl/1478760.
@article{osti_1478760,
title = {Evaluation, Refurbishment, and Characterization of Fast Neutron Scintillators for the TREAT Fuel Motion Monitoring System},
author = {Hix, Jay D. and Chichester, David L. and Watson, Scott M. and Johnson, James T. and Thompson, Scott J.},
abstractNote = {This paper details work being performed at the Idaho National Laboratory (INL) to evaluate, refurbish, and characterize proton-recoil scintillation (PRS) detectors utilized in a 360 channel array for the measurement of fast neutrons in a standalone system historically called a hodoscope located in the Transient Reactor Test Facility (TREAT). The TREAT hodoscope serves as the primary Fuel Motion Monitoring System for documenting real time fuel displacement during transient experiments. The detectors in the hodoscope have stood dormant for over 20 years and significant degradation must be addressed before the system can be brought back to operational status. The refurbishment process begins by decoupling the PRS from their matched photo multiplier tubes (PMTs) and treating the PRS with ethanol. This process cleans the surfaces, removing paint and legacy labels/ markings. During this procedure many physical variations can be observed. After cleaning, the PRS are physically measured using a digital caliper and the dimensions documented. Following this, a well-controlled 280nm LED light source is used to stimulate the PRS to produce an emission spectrum inside an integration sphere. This emission spectrum is then measured using a UV enhanced optical spectrometer. Spectral measurements are recorded from 185 nm to 580 nm in 0.4 nm steps. The PRS are then lightly sanded on the non-PMT mating surfaces and painted with commercially available reflective paint. A final emission spectrum is recorded for each PRS after painting.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {10}
}

Conference:
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