Dosimetry for the Aurora Facility.
NAVAL RESEARCH LAB WASHINGTON D C
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A suitable thermoluminescent dosimeter system has been recommended and adopted for routine use at the Aurora Facility The 0.4-mm x 6-mm, 5 CaF2Mn in Teflon disc dosimeters, used in conjunction with the Harshaw Model 2000 TLD Reader. A spherical silicon calorimeter has been designed, constructed, tested, and put into service as a dose standard at the Aurora Facility. After operating successfully for dozens of shots, it began showing signs of possible radiation damage about one million rad. Recalibration of the thermistor revealed an 11 increase in resistance over the entire temperature range 15-35C. The calorimeter is back in service, employing the new calibration. Attenuation measurements at the Aurora Facility have indicated that the bremsstrahlung near the rear of the test volume 100 cm from the wall has an effective energy of about 1.4 MeV. Author
- Nuclear Instrumentation