TY - JOUR
AU - Young, Tony T.
AB - The Gemini Near IR Imager (NIRI) is a cryogenic instrument cooled by two closed-cycle cryo-coolers. The vacuum jacket is a hexagon shaped vacuum vessel made of three sections. Each section is forged out of aluminum 6061. All the internal structural components are made of aluminum 6061T6 except the supporting trusses, which are made of titanium. All the internal structural members are stress relieved to maintain dimensional stability and good optical alignment. The thermal insulation includes floating shields and cold shields. Two closed-cycle coolers are mounted opposite to each other and electronically synchronized in order to cancel the vibration caused by the oscillating expansion valve. Several different fabrication methods and stress relief methods are discussed.
TI - Cryostat design and fabrication for the Gemini NIRI instrument
JF - Proceedings of SPIE
DO - 10.1117/12.317233
DA - 1998-08-21
UR - https://www.deepdyve.com/lp/spie/cryostat-design-and-fabrication-for-the-gemini-niri-instrument-oFYz00bk0d
SP - 1084
EP - 1091
VL - 3354
IS - 1
DP - DeepDyve
ER -