The LEP II RF power generation system

Author

Frischholz, H.

Author_Institution

CERN, Geneva, Switzerland

fYear

1993

fDate

17-20 May 1993

Firstpage

1247

Abstract

By means of the LEP II RF system the maximum circumferential accelerating voltage will be increased from 350 MV at present to about 2000 MV, required for W^± pair production at centre-of-mass energies around 180 GeV. The accelerating voltage will be provided by the existing copper RF cavity system (LEP Phase I) and 192 superconducting RF cavities to be installed in LEP by 1995. These sc cavities will be powered by 12 high power klystrons via junction circulators and a WR 2300 waveguide power distribution system. Compared to the existing LEP I installation the output power of the LEP II klystrons has been increased from 1000 to 1300 KW cw by making use of the full capacity of the HV power converters, rated at 100 kV and 40 A. Simultaneously, the power-handling capability of the junction circulators, when operated into a sliding short, could also be enhanced by the same amount. A description of the LEP II RF power generation system is given and, in particular, the improved performance of the high power klystrons, circulators, thyratron crowbars and hard tube modulators is discussed

Keywords

circulators (microwave); electron accelerators; klystrons; power supplies to apparatus; storage rings; synchrotrons; thyratrons; 100 kV; 1300 kW; 40 A; HV power converter; LEP II; RF power system; WR 2300 waveguide power distribution system; circulators; hard tube modulators; junction circulators; klystrons; superconducting RF cavities; thyratron crowbars; Acceleration; Circulators; Copper; Josephson junctions; Klystrons; Power generation; Production systems; Radio frequency; Voltage; Waveguide junctions;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308629

Filename

308629