Photoinjector RF cavity design for high power CW FEL

Conference · Wed Jan 01 00:00:00 EST 2003

DOI:https://doi.org/10.1109/PAC.2003.1289539· OSTI ID:976661

Kurennoy, S ^[1]; Schrage, D L ^[2]; L, Wood R ^[3]; Young, L M ^[4]; Schultheiss, T ^[5]; Christina, V; Rathke, J

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1. Sergey
2. Dale L.
3. Richard L.
4. Lloyd M.
5. Thomas

The project is under way to develop a key enabling technology for highpower CW FEL: an RF photoinjector capable of producing continuous average current greater than 100 mA. The specific aim is a n-mode, normalconducting IW photoinjector, 3 nC of bunch charge, 100 mA of current (at 33.3-MHz bunch repetition rate) and emittance less than 10 mm-mad. This level of performance will enable robust 100-kW-class FEL operation with electron beam energy <100 MeV, thereby reducing the size and cost of the FEL. This design is scalable to the MW power level by increasing the electron bunch repetition rate to a higher value. The major challenges are emittance control and high heat flux within the CW 700-MHz RF cavities. Results of RF cavity design and cooling schemes are presented, including both high-velocity water and liquid-nitrogen cooling options.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 976661
• Report Number(s): LA-UR-03-3187; TRN: US1006520
• Resource Relation: Journal Volume: 2; Conference: Submitted to: 2003 Particle Accelerator Conference (PAC2003), Portland, OR, May 12-16, 2003
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CAVITIES
DESIGN
ELECTRON BEAMS
ELECTRONS
HEAT FLUX
PERFORMANCE
WATER
FREE ELECTRON LASERS
ACCELERATORS
RF SYSTEMS