Speakers
Description
A prototype laser wire scanner (LWS) was used to measure horizontal and vertical profiles of the 750-keV H- beam in the Los Alamos Neutron Science Center (LANSCE) accelerator front end under two beam optics configurations. At some scan positions, the electron-detector response was bipolar rather than the expected single negative pulse. Profiles were reconstructed using both negative-lobe integrals and integrals of two-sided Gaussian fits. The two methods indicated modest broadening from Beam Optics A to B, 11–12% horizontally and 7–9% vertically in laser-angle coordinates. These changes were substantially smaller than the TRACE 2D predictions. The results demonstrate the feasibility of noninvasive transverse profiling at LANSCE while identifying scan calibration and electron-collection effects as priorities for further study.
Footnotes
Research presented in this article was supported by the Laboratory Directed Research and Development program of Los Alamos National Laboratory under project number 20260705MFR.
Funding Agency
U.S. DOE and NNSA
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