Operation of the Tevatron six-kilometerlong transfer line

Conference · Mon Aug 01 04:00:00 EDT 1983 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:5554460

Rode, C H; Ferry, R; Lincicome, T; Makara, J; Theilacker, J; Walker, R

The Tevatron transfer line consists of twenty-six 250-meter sections interconnected with vacuum jacketed U-tubes forming a loop. Each section carries a supercritical helium line and a subcooled liquid nitrogen shield with an expansion joint in the middle of the run. The Tevatron refrigeration system is based on the concept of a Central Helium Liquefier providing liquid to twentyfour satellite refrigerators operating as amplifiers with a flow gain of 12 and providing 966 watts per unit. Both from the standpoint of system reliability and ease of installation, debug and startup, it was decided to build a complete transfer line loop starting at the Central Liquefier and returning to it. This loop consists of twenty-six independent sections; each is interconnected to the next by a pair of vacuum jacketed U-tubes with a branch tap to the local refrigerator. This system permits the loss of any one section and still maintains all twenty-four refrigerators operating by feeding a portion of the loop in reverse. This report describes the cross section of the transfer line, the expansion and bayonet cans at each end, and the U-tubes which connect the various sections and provide branch taps to the refrigerator and magnet systems, as well as other minor components of the cooling system. Specifications, materials, and schematics are provided.

• Research Organization: Fermi Nat.'l Accelerator Lab., P.O. Box 500, Batavia, IL 60510
• OSTI ID: 5554460
• Report Number(s): CONF-830311-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-30:4
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATORS
COOLANT LOOPS
COOLING
COOLING SYSTEMS
CYCLIC ACCELERATORS
ELEMENTS
ENERGY SYSTEMS
FERMILAB ACCELERATOR
FLUID MECHANICS
FLUIDS
GASES
HELIUM
HELIUM DILUTION REFRIGERATION
HELIUM DILUTION REFRIGERATORS
MECHANICS
NITROGEN
NONMETALS
RARE GASES
REFRIGERATION
REFRIGERATORS
SYNCHROTRONS
TUBES