SRAM-BASED PASSIVE DOSIMETER FOR HIGH-ENERGY ACCELERATOR ENVIRONMENTS

This paper reports on a novel Non-Volatile Random Ac-cess Memory (NVRAM)-based neutron dose equivalent monitor (REM counter). The principle of this device is based on the radiation effect initiating the Single Event Up-sets (SEUs) in high density memories. Several batches of NVRAMs from different manufactures were examined in various radiation environments, i.e. 241Am-Be (α, n) and Linear accelerator, produced radiation Þelds. A suitable neutron moderator was used to enhance the detectors sen-sitivity. Further experiments were carried out in a linear accelerator VUV-FEL. A separate batch of SRAMwas irra-diated with 60Co-gamma source risen up to a dose of about 1.1 kGy. The proposed detector could be ideal for a neu-tron dose measurement produced by a high-energy electron linac, including synchrotron and Free Electron Laser (FEL) facilities