D - SCUBA2 Ultra-Cryogenic Modules
The SCUBA2 bolometer camera will operate in conjunction with the James Clerk Maxwell Telescope (JCMT) to study the submillimeter wavelength region of the spectrum. SCUBA2 will be about a 1000 times faster than the currently operating SCUBA camera. It is situated close to the summit of Mauna Kea, Hawaii, at an altitude of 4092m. For this reason, the cryostat needed to be cooled by pulse tubes to avoid the use of cryogenic liquids, which have to be transported up the mountain. The base temperature of the bolometers will be about 40 mK. A dilution refrigerator was integrated with a pulse tube into a single unit: MNK126-500-TOFPT (Leiden Cryogenics), which consists of an adjusted MNK126-500 (Leiden Cryogenics) and a PT410 (Cryomech).
SCUBA2: Submillimeter Common User Bolometer Array - 2
Constituent: Astronomy Technology Centre (Edinburgh/Scotland)
Executant: Leiden Cryogenics