Beam control in the ETA-II linear induction accelerator
Corkscrew beam motion is caused by chromatic aberration and misalignment of a focusing system. We have taken some measures to control the corkscrew motion on the ETA-11 induction accelerator. To minimize chromatic aberration, we have developed an energy compensation scheme which reduces energy sweep and differential phase advance within a beam pulse. To minimize the misalignment errors, we have developed a time-independent steering algorithm which minimizes the observed corkscrew amplitude averaged over the beam pulse. The steering algorithm can be used even if the monitor spacing is much greater than the system`s cyclotron wavelength and the corkscrew motion caused by a given misaligned magnet is fully developed, i.e., the relative phase advance is greater than 27{pi}.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10157456
- Report Number(s):
- UCRL-JC-110203; CONF-9208109-86; ON: DE93013427
- Resource Relation:
- Conference: 16. international LINAC conference,Ottawa (Canada),23-28 Aug 1992; Other Information: PBD: 21 Aug 1992
- Country of Publication:
- United States
- Language:
- English
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