title: Measurement of ion beam profiles in a superconducting linac with a laser wire.
abstract: A laser wire ion beam profile monitor system has been developed at the Spallation Neutron Source accelerator complex. The laser wire system uses a single laser source to measure the horizontal and vertical profiles of a pulsed hydrogen ion (H(-)) beam along a 230 m long superconducting linac, which accelerates H(-) from 200 MeV to 1 GeV. In this paper, we describe the laser optics requirement for the system, the performance of the profile measurement, and the effects of laser parameters on the measurement reliability. The result provides a practical guideline for the development of a large-scale, operational, laser-based diagnostics in accelerator facilities.
authors.affiliation: Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA. liuy2@ornl.gov
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.forename: Cary
authors.initials: C
authors.lastname: Long
authors.forename: Charles
authors.initials: C
authors.lastname: Peters
authors.forename: Alexander
authors.initials: A
authors.lastname: Aleksandrov