Fermilab Tevatron Transfer Line

The Tevatron refrigeration system is described, specifically the design transfer line cross-section. A cross-section and one section Tevatron feed line are illustrated. One pair of Tevatron U-tubes and the transfer line test layout are also illustrated. The fabrication and installation are described. Cooldown and warmup tests are reported with the operation and heat leak measurements given. Current work includes flow instabilities. Preliminary results indicate that heat loads are similar to previous measurements.