AUTOMATED HLA TYPING USING RSCA

Not Available Cryocoolers will be required to handle larger sensor heat loads in the future. These larger loads will also vary over time as the result of sensor duty cycles. These varying loads have brought about the concept of the Thermal Storage Unit (TSU). The TSU is added to the cooling system to average the heat load on the cryocooler. By averaging the load, the size of the cryocooler and the cooler input power are minimized while the sensor temperature is held constant. To date, development work has concentrated on fixed temperature TSUs. Fixed temperature TSUs work by absorbing heat by the mechanism of phase change in a solid cryogen located at the cooled sensor. Variable temperature TSUs have been studied very little. Variable temperature TSUs solve the variable heat load problem without the need for phase-change cryogens. They are particularly useful for very low temperature applications (below 12K) where there are no phase-change cryogens useful for TSUs. This proposed effort will examine variable temperature TSUs through analysis and test with concentration on the temperature range below 12K.