Working with a Dewar in the Central Development Laboratory in Charlottesville, VA, August 1993

In the Central Development Laboratory in Charlottesville in 1993, NRAO engineer Nancyjane Bailey, works with the dewar used to test the superconducting SIS receivers (the so-called "rockets") for NRAO's 12 meter telescope at Kitt Peak, AZ. Nancyjane oversaw the construction of all the rockets for the 1.3, 2, and 3-mm bands on the 12 meter telescope -- 17 rockets in all including spares, a major accomplishment. One receiver used 8 of the 230 GHz (1.3-mm) rockets, and another receiver held 2 rockets for each of the three bands. At one point, there was an implosion of one of the dewar vacuum windows, which caused substantial damage to the internal copper heat shield and one of the rockets. The vacuum window was subsequently redesigned. All the SIS mixers for the 12-m telescope (and later for ALMA Bands 3 and 6) were designed in the CDL by Tony Kerr and Shing-Kuo Pan and fabricated in Arthur Lichtenberger's lab at University of Virginia.

Records of the NRAO

NRAO/AUI/NSF

Still Image

NancyjaneBailey-aug1993.jpg

1993-08

NRAO/AUI/NSF

Photographs Series

Electronics, Computers and Equipment Unit