Microkelvin Laboratory

CRYOSTAT AT BAY 2

SPECIAL FEATURES OF BAY 2

Design of Bay2 is similar to that of Bay1. The refrigerator at Bay2 is designed for general purpose such as studies of metals, semiconductors, and superfluid 3He at submillikelvin in moderate magnetic fields.

There are three experimental spaces available in the cryostat. A copper cage directly attached to top of the copper bundle is divided into two spaces at the middle plate.

The first space, the lower part of the cage, is equipped with a ³He melting pressure thermometer and a platinum NMR thermometer in addition to an experimental tower.

The second space, the upper part of the cage, is equipped with an experimental tower with a small 2 Tesla magnet. There are additional spaces available for future experiments.

The third space, attached to the bottom of the copper bundle, locates in the center of the second 8 Tesla magnet. A small epoxy cell is filled with liquid ³He cooled by silver sinter inside the cell via silver post attached the copper bundle. Total of 16 electrically shielded leads for transport measurements are cooled via individual silver sinter cooled by ³He inside the cell.

BASIC CHARACTERISTICS OF BAY 2

Design of Bay2 is similar to that of Bay1. The refrigerator at Bay2 is designed for general purpose such as studies of metals, semiconductors, and superfluid 3He at submillikelvin in moderate magnetic fields. There are three experimental spaces available in the cryostat. A copper cage directly attached to top of the copper bundle is divided into two spaces at the middle plate.
	The first space, the lower part of the cage, is equipped with a ³He melting pressure thermometer and a platinum NMR thermometer in addition to an experimental tower.
	The second space, the upper part of the cage, is equipped with an experimental tower with a small 2 Tesla magnet. There are additional spaces available for future experiments.
	The third space, attached to the bottom of the copper bundle, locates in the center of the second 8 Tesla magnet. A small epoxy cell is filled with liquid ³He cooled by silver sinter inside the cell via silver post attached the copper bundle. Total of 16 electrically shielded leads for transport measurements are cooled via individual silver sinter cooled by ³He inside the cell.