Accelerator Radio-Frequency Structures/
Superconducting Test and Fabrication Laboratory

Facility Description

The Structures Laboratory develops analytical, numerical, and experimental techniques to investigate, analyze, and modify properties of resonant accelerator structures over a wide frequency range. When possible, we collaborate with others at Los Alamos to develop numerical models of resonant systems. Accelerators are modeled and evaluated at low power in the laboratory before their construction to ensure correct radio-frequency properties, stable operation under all anticipated sources of perturbations, and lasting tuning. After fabrication and installation, the laboratory assumes responsibility for tuning radio-frequency structures.

We also research the physics of resonant structures to make possible the design of even higher performance accelerators, such as those based on cryogenic copper and superconducting materials. In much of the work, we develop advanced diagnostic instrumentation and computerized tools to collect and analyze the data.

From 2000, this facility has been mostly used for developing superconducting (SC) accelerating cavities made of niobium for APT and AAA projects. A number of tests on single- and multi-cell elliptical SC cavities and spoke cavities have been carried out using a large cryostat of 38-inch in diameter and 10 feet in depth.

Equipment

• Network analyzers
• Clean room
• Microwave power sources and instrumentation
• Cryostats and inserts
• Cryocooler

Facility Access: Open

Last Update: 25 June 2003

Technical Contact
Tsuyoshi Tajima
LANSCE-1
Mail Stop: H817
Phone: 505-667-6559
Fax: 505-665-2904
E-mail Address: tajima@lanl.gov