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