- We are designing a Radiation-Hardened circuits such as Charge-Sensitive Amplifier (CSA), Transimpedance Amplifier (TIA), ADC, etc.
- Some digital components such as SRAM, DFF, logic cells are also considered for radiation hardening.
A designed CSA is survived up to ~ 5 Mrad of total ionizing dose (TID).
- We have developed a specialized circuit to not only reduce detector capacitance but also increase signal amplitudes. The sensing circuit would be helpful for large area detectors like a cargo inspection system as well as for a number of detector necessarily requiring a multiplexing scheme like Positron Emission Tomography (PET) and Single-Photon Emission Computed Tomography (SPECT).
- The system is for monitoring harsh environment sites where human being can not access due to high radiation conditions. That information provided by the system will help governors and key-operators decide required actions immediately.
-Design radiation sensing ASIC chips for advanced medical instrumentation such as PET, CT, X-ray will be a key technique to reduce channels, power consumption, and area as well as to enhance performances.
Prototype of a PET insert at Stanford (left) radiation sensor and circuit for Time-of-Flight (ToF) measurements.
- The new system would be survived for monitoring reactors in high temperature, radiation, and pressure.