Interaction of an ultrarelativistic electron bunch train with a W-band accelerating structure: High power and high gradient
- Argonne National Lab. (ANL), Lemont, IL (United States); Tsinghua Univ., Beijing (China)
- Argonne National Lab. (ANL), Lemont, IL (United States); Euclid Techlabs LLC, Solon, OH (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Tsinghua Univ., Beijing (China)
Electron beam interaction with high frequency structures (beyond microwave regime) has a great impact on future high energy frontier machines. We report on the generation of multimegawatt pulsed rf power at 91 GHz in a planar metallic accelerating structure driven by an ultrarelativistic electron bunch train. This slow-wave wakefield device can also be used for high gradient acceleration of electrons with a stable rf phase and amplitude which are controlled by manipulation of the bunch train. To achieve precise control of the rf pulse properties, a two-beam wakefield interferometry method was developed in which the rf pulse, due to the interference of the wakefields from the two bunches, was measured as a function of bunch separation. As a result, measurements of the energy change of a trailing electron bunch as a function of the bunch separation confirmed the interferometry method.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; W-31-109-ENG-38; SC0009571
- OSTI ID:
- 1248375
- Alternate ID(s):
- OSTI ID: 1237113
- Journal Information:
- Physical Review Letters, Vol. 116, Issue 5; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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