Author :
Assadi, S. ; Aleksandrov, A. ; Blokland, W. ; DeCarlo, A. ; Deibele, C. ; Gibson, P. ; Grice, W. ; Hechler, M. ; Hunter, T. ; Kelly, J. ; Ladd, P. ; Murdoch, G. ; Plum, M. ; Pogge, J. ; Potter, K. ; Purcell, D. ; Shea, T. ; Stout, D.
Abstract :
After a successful demonstration of a nonintercepting beam profile monitor for the H- beams at the 750 KeV and the 200 MeV LINAC at Brookhaven National Laboratory, the SNS project approved using a Nd:YAG laser rather than the traditional carbon wire for transverse profile monitors in the SNS superconducting LINAC. Experiments have also been performed on SNS 2.5 MeV medium energy beam transport line at LBNL. The design and the implementation of a multistation profile monitoring system using a single laser will be presented. The laser beam is scanned across the H- beam to photoneutralize narrow slices. The liberated electrons are collected to provide a measurement of the transverse beam profile. The prototype system has been tested; the measurement and performance results will be presented.
Keywords :
beam handling techniques; ion accelerators; linear accelerators; measurement by laser beam; particle beam diagnostics; particle beam dynamics; storage rings; 2.5 MeV; 200 MeV; 750 keV; H- beams; Nd:YAG laser; SNS laser profile monitor design; SNS laser profile monitor implementation; SNS superconducting LINAC; Spallation Neutron Source; carbon wire; energy beam transport line; liberated electrons; photoneutralization; prototype system; storage rings; transverse beam profile monitors; Electron beams; Laboratories; Laser beams; Linear particle accelerator; Monitoring; Optical design; Prototypes; Superconducting devices; Superconducting filaments and wires; System testing;
