Design Considerations for the LCLS RF Gun

Technical Report · Mon Jan 31 00:00:00 EST 2005

DOI:https://doi.org/10.2172/839679· OSTI ID:839679

Boyce, R ^[1]

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1. SLAC

The LCLS rf gun design requires several modifications from existing S-band rf guns. The modifications that have the largest impact on the design of the gun are a dual rf feed and additional cooling capacity for 120 Hz operation. A list of electrical and mechanical specifications have been developed to produce the desired rf field. The simulation code ANSYS was used to study the steady state thermal properties of a 120 Hz gun. It was determined that four cooling channels at appropriate locations could be used to maintain the gun at a nearly constant frequency. The gun body stresses were all at or below the yield strength of Cu except for at the rf apertures. The stress at the apertures is over twice the yield strength and additional work is necessary to reduce the stress and still produce the desired rf coupling coefficient. Only steady state temperatures were calculated and no pulsed heating effects were considered in this study.

• Research Organization: Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
• Sponsoring Organization: SC
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 839679
• Report Number(s): SLAC-TN-05-019
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
APERTURES
CAPACITY
DESIGN
HEATING
MODIFICATIONS
SIMULATION
SPECIFICATIONS
STRESSES
THERMODYNAMIC PROPERTIES
YIELD STRENGTH