Beam analysis tomography

Journal Article · Thu Feb 01 04:00:00 EST 1979 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/TNS.1979.4330456· OSTI ID:5468897

Fraser, J S

Projections of charged particle beam current density have been used for many years as a measure of beam position and size. The conventional practice of obtaining only two projections, usually in the horizontal and vertical planes, puts a severe limit on the detail that can be recovered from the projections. A third projection provides sufficient improvement to justify the addition of a wire to the conventional wire scanner in certain cases. A group of programs using algebraic reconstruction techniques was written to reconstruct beam current density from beam projections obtained at 3 or more specific or arbitrary angles around the beam. A generalized program, which makes use of arbitrary 2 x 2 transfer matrices between projections, can be used to reconstruct transverse or longitudinal emittance from appropriate projections. Reconstruction examples of beam current density and transverse and longitudinal emittance using experimental data from the LAMPF accelerator beam are given. The method may be applied to extract emittance and beam current density information using non-intercepting profile measuring devices in high-current accelerators.

• Research Organization: Chalk River Nuclear Labs., Ontario
• OSTI ID: 5468897
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-26:1; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
BEAM MONITORS
BEAM PROFILES
COMPUTER CALCULATIONS
CURRENT DENSITY
DATA
DATA FORMS
EXPERIMENTAL DATA
GRAPHS
IMAGES
INFORMATION
MEASURING INSTRUMENTS
NUMERICAL DATA
THREE-DIMENSIONAL CALCULATIONS