Title :
Preliminary results from prototype niobium cavities for the JLAB Ampere-class FEL
Author :
Kneisel, P. ; Ciovati, G. ; Bundy, R. ; Clemens, B. ; Forehand, D. ; Golden, B. ; Manning, S. ; Manus, B. ; Marhauser, F. ; Overton, R. ; Rimmer, R.A. ; Slack, G. ; Turlington, L. ; Wang, H.
Author_Institution :
Jefferson Lab., Newport News
Abstract :
In a previous paper the cavity [1] design for an Ampere-class cryomodule was introduced. We have since fabricated a 1500 MHz version of a single cell cavity with waveguide couplers for HOM and fundamental power, attached to one end of the cavity, a 5-cell cavity made from large grain niobium without couplers and. a 750 MHz single cell cavity without endgroups to get some information about obtainable Q-values, gradients and multipacting behavior at lower frequency. This contribution reports on the various tests of these cavities.
Keywords :
accelerator cavities; beam handling techniques; cryogenics; electron beams; free electron lasers; waveguide couplers; HOM; JLAB Ampere-class FEL; Q-values; beam pipe; cryomodule; electron beam welding; free electron laser; prototype niobium cavities; single cell cavity; waveguide couplers; Acceleration; Business continuity; Couplers; Frequency; Government; Niobium; Prototypes; Shape; Testing; Welding;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4441292
