Abstract
The beam shape in the longitudinal phase plane at the
extraction point of an RTM strongly depends on the
choice of the stable phase of the accelerating cavity. This
is due to the fact that the main longitudinal focusing force
is the derivative of the accelerating potential with respect
to time (or phase). Furthermore, this focusing force is
applied to the electron beam each turn, such that the
output beam shape in the longitudinal phase plane is
significantly affected. This effect can for instance be used
in order to minimise the bunch length or the energy
spread of the output beam of the RTM. For this paper we
have used the lay-out of the Eindhoven RTM for the
calculations of the stable-phase variations, which have
been studied in linear approximation. The stable phase
area for this RTM equals 18 degrees. It will be shown that
stable-phase variations in the order of 1 degree already
have a significant impact on the longitudinal beam shape.
Furthermore, some remarks are made on the
consequences of non-linear beam dynamics in relation to
stable-phase variations.
| Original language | English |
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| Title of host publication | Proceedings 18th Particle Accelerator Conference |
| Place of Publication | New York |
| Pages | 2825-2827 |
| DOIs | |
| Publication status | Published - 1999 |
| Event | 18th IEEE Particle Accelerator Conference (PAC'99), March 27-April 2, 1999, New York, NY, USA - New York, NY, United States Duration: 27 Mar 1999 → 2 Apr 1999 |
Conference
| Conference | 18th IEEE Particle Accelerator Conference (PAC'99), March 27-April 2, 1999, New York, NY, USA |
|---|---|
| Abbreviated title | PAC'99 |
| Country/Territory | United States |
| City | New York, NY |
| Period | 27/03/99 → 2/04/99 |