title: Surface-roughness wakefield measurements at brookhaven accelerator test facility.
abstract: An experiment has been carried out at the Brookhaven Accelerator Test Facility to investigate the effect of a surface-roughness wakefield in narrow beam tubes with artificially created bumps. The measurements show that the synchronous modes decay significantly due to the randomization of the roughness pattern. It is pointed out that this decay mechanism has not been investigated in the previous experiment at DESY and the investigators' conclusion does not apply for surface-roughness wakefields in real surfaces.
authors.affiliation: Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: F
authors.initials: F
authors.lastname: Zhou
authors.forename: J H
authors.initials: JH
authors.lastname: Wu
authors.forename: M
authors.initials: M
authors.lastname: Babzien
authors.forename: I
authors.initials: I
authors.lastname: Ben-Zvi
authors.forename: R
authors.initials: R
authors.lastname: Malone
authors.forename: J B
authors.initials: JB
authors.lastname: Murphy
authors.forename: X J
authors.initials: XJ
authors.lastname: Wang
authors.forename: M H
authors.initials: MH
authors.lastname: Woodle
authors.forename: V
authors.initials: V
authors.lastname: Yakimenko