Please cite this article in press as: Burton JC doi:10.1016/j.cryogenics.2011.03.001 We have designed and constructed a continuously operating He cryostat with windows for laser ablation and spectroscopy. A two-stage pulse-tube refrigerator cools two platforms to base temperatures of approximately 40 K and 4 K respectively. The platforms are equipped with heat exchangers that cool separate stre...

We present a simple cryostat purpose built for use with surface-electrode ion traps, designed around an affordable, large cooling power commercial pulse tube refrigerator. A modular vacuum enclosure with a single vacuum space facilitates interior access and enables rapid turnaround and flexibility for future modifications. Long rectangular windows provide nearly 360° of optical access in the pl...

Open-access microcavities are a powerful tool to enhance light–matter interactions for solid-state quantum and nanosystems key advance applications in technologies. For this purpose, the cavities should simultaneously meet two conflicting requirements—full tunability cope with spatial spectral inhomogeneities of material highest stability under operation cryogenic environment maintain resonance...

This report describes band 9 beam pattern measurements which were made at NA ALMA front end integration center during the visit of ALMA band 9 group representatives from 2 to 7 of June 2008. The Band 9 cartridge system was mounted within ALMA front end cryostat #2 and the overall system included the cryostat window and filters. Measurement set-up, experiment condition and sequence and results o...