Emittance measurements of the Sub-Picosecond Accelerator electron beam using beam position monitors

Journal Article · Mon Feb 01 00:00:00 EST 1999 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1149598· OSTI ID:304307

Russell, S J ^[1]

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1. MS H851, Los Alamos National Laboratory, Los Alamos , New Mexico 87545 (United States)

In general, the spatial distributions of electron beams from photoinjectors are unknown and are not well approximated by a Gaussian. Therefore, when measuring the emittance, it is important to make no assumptions about the beam{close_quote}s spatial distribution. A diagnostic that fulfills this requirement uses beam position monitors to measure the second moment of the electron beam{close_quote}s image charge. This information, coupled with the beam line{close_quote}s transfer matrix, can be used as an unambiguous measure of the root mean square emittance that is independent of the beam{close_quote}s spatial distribution. Presented here are the results of the first implementation of this measurement technique on the Sub-Picosecond Accelerator facility at Los Alamos National Laboratory. {copyright} {ital 1999 American Institute of Physics.}

• OSTI ID: 304307
• Journal Information: Review of Scientific Instruments, Vol. 70, Issue 2; Other Information: PBD: Feb 1999
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ELECTRON BEAMS
BEAM EMITTANCE
SPATIAL DISTRIBUTION
BEAM DYNAMICS
DIAGNOSTIC TECHNIQUES
POSITION SENSITIVE DETECTORS
BEAM POSITION
ELECTRON BEAM INJECTION