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Dosimeter
 The dosimeter for Trailblazer was designed by Jesse Mee of the Air Force
Research Laboratory. Its purpose is to monitor and report the radiation
dose accumulated from space environment. It is composed of a RADFET
detector transistor, a Nu-Dose bias and analog read-out microcircuit
developed by Nu-Trek Corporation, and a PIC16F88 based ASIM used to
digitize the output of the Nu-Dose and transfer the result to the I2C
data bus. Initial calibration of the unit was performed at the AFRL
Co-60 facility. The dosimeter is expected to experience a maximum of 10
Krad(Si) during the mission life and has been designed to be most
sensitive at that dose level. The dosimeter instrument is implemented
on a 1U board. A fully functional engineering unit equivalent in form,
fit, and function to the flight unit has been delivered and is
undergoing integration tests wit the Trailblazer system.
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