Bolocam
Z-Spec
SPIRE
Cal-Tech Submillimeter
Observatory MKID CCAT Pictures:
Inside the Cryostat:
The
first picture shows the inside of the cryostat, with the ADR in the
foreground and the sorption fridge behind it. The WaFIRS module
is shown in the middle of the cryostat, mounted to the 300mK radiation
shield. The circular hole in the shield corresponds to the dewar
window, where the light from the telescope enters the spectometer.
The
corrugated feedhorn (shown at right) couples the light to a rectangular
waveguide which then feeds it into the parallel plates.
The
various temperature stages in the dewar are thermally isolated using
Kevlar isolation posts. The posts are made of 2 pieces of
aluminum held together with Kevlar yarn and tensioned with belleville
spring washers. The picture on the right shows the posts supporting the
grating module, and the picture on the left shows 4 Kelvin bench,
before the 300 mK box is mounted to the posts shown.
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