@article{oai:nifs-repository.repo.nii.ac.jp:00010680,
 author = {MUKAI,  Kiyofumi and Abe,  Ryo and PETERSON,  Byron and PETERSON,  Byron J. and TAKAYAMA, Sadatsugu},
 journal = {Review of Scientific Instruments},
 month = {Oct},
 note = {0000-0003-1586-1084, An infrared imaging video bolometer was improved for application to a neutron environment in fusion plasma devices, i.e., the Large Helical Device (LHD). In order to calibrate the thermal characteristics of the activated foil absorber inside the plasma vacuum vessel, the remote-controlled in situ calibration system was improved with high-surface-flatness mirrors. Furthermore, the carbon coating method was improved by introducing a vacuum evaporation technique instead of the conventional spray technique to realize the coating on both sides of the absorber with reproducibility and uniformity. The optimal thickness of the coating was also determined. Owing to these coating improvements, the reproducibility of the effective emissivity on both sides especially was improved. Finally, the variation with the neutron irradiation of the thermal characteristics of the foil absorber was investigated. It was found that the effect was not significant for the total neutron emission of 3.6 × 1018 on LHD.},
 title = {Improvement of infrared imaging video bolometer for application to deuterium experiment on the large helical device},
 volume = {89},
 year = {2018}
}