A User Facility 1.5 THz Heterodyne Receiver System

将建造一个名为Trend(带Nb氮化器件的太赫兹接收器)的普通用户1.5THz外差接收器系统，并将其插入南极站目前用于AST/RO的现有双频系统中。Trend使用热电子测辐射热计(HEB)混合器，在1300-1600 GHz范围内实现了500K DSB的低噪声性能。对NⅡ、H2D+和CO等原子和分子发射的探测和空间分布将为恒星、化学和银河演化提供新的视角。这将是第一个频率超过1 THz的天文接收器，并将成为未来低噪声THz接收器在机载和星载接收器中应用的试验台。*

Yngvesson award abstractAST 9987319A common user 1.5 THz heterodyne receiver system named TREND (Terahertz Receiver with Niobium Nitride Device) will be built and inserted into an existing dual frequency system now in use on AST/RO at the South Pole station. TREND uses a hot electron bolometric (HEB) mixer to achieve 500K DSB low noise performance between 1,300 and 1,600 GHz.The detection and spatial distribution of emission from atomic and molecular species such as N II, H2D+ and CO will provide a new perspective on stellar, chemical and galactic evolution.This will be the first astronomical receiver for frequencies above 1THz and will be the test bed for future applications of low-noise THz receivers in both airborne and space borne recievers.***