High power tests of first input couplers for cornell erl injector cavities

Author

Veshcherevich, V. ; Belomestnykh, S. ; Quigley, P. ; Reilly, J. ; Sears, J. ; Möller, W.D.

Author_Institution

Cornell Univ., Ithaca

fYear

2007

fDate

25-29 June 2007

Firstpage

2355

Lastpage

2357

Abstract

The first two RF power couplers for the ERL injector, currently under construction at Cornell University, have been fabricated. The couplers were assembled in the liquid nitrogen cryostat, built for their tests. A 15 kW CW IOT transmitter was available for coupler tests. A resonant ring was used for an additional increase of power. The couplers were successfully tested up to the goal power level of 50 kW CW. However, the first pair of couplers showed an excessive temperature rise at some points. Therefore, minor changes in the design have been done to improve cooling.

Keywords

accelerator RF systems; accelerator cavities; cryostats; linear accelerators; particle beam injection; photocathodes; CW IOT transmitter; Cornell ERL injector cavities; Energy Recovery Linac; RF power couplers; cooling; liquid nitrogen cryostat; photocathode DC gun; power 15 kW; power 50 kW; resonant ring; Ceramics; Coaxial components; Cooling; Couplers; Nitrogen; Optical coupling; Radio frequency; Structural beams; Temperature; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4441248

Filename

4441248