Calculations and model measurements for the Euterpe cavity

Author

van der Heide, J.A. ; Rubingh, M.J.A. ; Kleeven, W.J.G.M. ; Botman, J.I.M. ; Timmermans, C.J. ; Hagedoorn, H.L.

Author_Institution

Eindhoven Univ. of Technol., Netherlands

fYear

1993

fDate

17-20 May 1993

Firstpage

1072

Abstract

The 400 MeV storage ring Euterpe is under construction. A quarter wave cavity (45 MHz, 50 kV) will accelerate the electrons. Due to space limitations the cavity length should not exceed 0.5 m. Therefore three special geometries are considered which have an `electrical length´ several times the physical length of the cavity. The first employs radial transmission line folding, the second longitudinal folding and the third capacitive loading of the transmission line. Transmission line theory is used to predict the cavity properties. Good agreement is found with SUPERFISH calculations. The capacitive loading option is superior considering its simplicity of construction and high shunt impedance. An LC equivalent circuit is used to model the impedance matching w.r.t the rf generator. Results are in good agreement with measurements on a scale 1:1 cold model

Keywords

beam handling equipment; cavity resonators; electron accelerators; storage rings; transmission line theory; 400 MeV; 45 MHz; 50 kV; Euterpe cavity; LC equivalent circuit; RF generator; SUPERFISH calculations; capacitive loading option; impedance matching; quarter wave cavity; radial transmission line folding; second longitudinal folding; shunt impedance; storage ring; third capacitive loading; transmission line; transmission line theory; Acceleration; Capacitance; Coaxial components; Equivalent circuits; Impedance matching; Inductance; Space technology; Transmission line matrix methods; Transmission line theory; Voltage;

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.1993.308680

Filename

308680