Heavy ion and pulsed laser SET measurements in ultrahigh speed MSM GaAs photodetectors

Laird, J. S.; Hirao, Toshio; Onoda, Shinobu; Ito, Hisayoshi

IEEE Transactions on Nuclear Science, 52(5), p.1504 - 1512, 2005/10

https://doi.org/10.1109/TNS.2005.855814

no abstracts in English

Development of accurate CP distribution measurement FBR plant using a plastic scintillation fiber detector

Sumino, Kozo; Aoyama, Takafumi; Emoto, Takehiko

PNC TN9410 96-233, 27 Pages, 1996/08

PNC-TN9410-96-233.pdf:0.96MB

It is important to accurately evaluate Corrosion Products (CPs) behavior in a FBR plant to reduce the personnel exposure due to CP deposition. A series of measurements of the gamma-ray dose rate distribution has been carried out in the Experimental Fast Reactor JOYO to characterize the CP behavior in the primary coolant system. The Plastic Scintillation Fiber (PSF), which is a position sensitive radiation detector that can detect the radiation dose rate at the relevant position in the fiber, was introduced to upgrade the gamma-ray distribution measurement in JOYO. In order to apply the PSF for the JOYO environment, the specification of the fiber was modified to obtain a wide range of sensitivity from about 0.01mSv/h up to 10mSv/h. This range covers the gamma-ray dose rate in the JOYO primary coolant system. In higher gradients of dose rate distribution than that of the PSF's position resolution, the measured data were unfolded by using the response matrix with a successive approximation method to reproduce the narrow distribution. As a result of the study on PSF, the continuous gamma-ray dose rate distribution was able to be measured by PSF in a few minutes, whereas point data at 1 m intervals were laboriously obtained by a set of Thermo-luminescence Dosimeters (TLDs). It was confirmed that the measurement of CP behavior upgraded significantly by using a detailed gamma-ray dose rate distribution.

Investigation of a low cost neutron detector for an active neutron system

Komeda, Masao; Ozu, Akira; Toh, Yosuke

no journal, , 

no abstracts in English

Low-cost non-destructive measurement system for nuclear materials by using Cherenkov detectors

Komeda, Masao; Toh, Yosuke; Tanabe, Kosuke*

no journal, , 

no abstracts in English

Development of a low-cost and portable non-destructive system for measuring nuclear materials

Komeda, Masao; Toh, Yosuke; Tanabe, Kosuke*

no journal, , 

no abstracts in English