An energy spectrum compressor system (ESC) for the Amsterdam Pulse Stretcher (AmPS)

Author

Noomen, J.G. ; Maas, R.

Author_Institution

NIKHEF-K, Amsterdam, Netherlands

fYear

1989

fDate

20-23 Mar 1989

Firstpage

1704

Abstract

To obtain high-duty (90%) electron beams, the present 2%-d.f., 500-MeV linac (MEA) will be modified into a low-d.f. (0.1%) injector for the pulse stretcher ring presently under construction. The accelerator peak current has to be increased from 10 mA to 80 mA to obtain an average current of 65 μA from the pulse stretcher. The resulting increase of the energy spread from 0.3% to 1-2% requires the installation of an energy compression system (ESC) to match the 0.2% acceptance of the pulse stretcher. The ESC consists of four magnets followed by a short-filling time RF traveling wave accelerator structure. Considerations concerning required energy range, beam loading, phase errors, and current ripple which determine the longitude dispersion and the required RF power source are presented

Keywords

beam handling equipment; beam handling techniques; electron accelerators; storage rings; Amsterdam Pulse Stretcher; RF power source; accelerator peak current; average current; beam loading; current ripple; energy spectrum compressor system; energy spread; longitude dispersion; magnets; phase errors; short-filling time RF traveling wave accelerator; Acceleration; Dispersion; Electron beams; Face detection; Klystrons; Magnets; Particle beams; Pulse compression methods; Radio frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/PAC.1989.72900

Filename

72900