7.49 particle_tunes
- type: setup command.
- function: define parameters for particle-by-particle tune computation for multi-turn tracking.
- sequence: must follow run_control.
- Command syntax, including use of equations and subcommands, is discussed in 7.2.
&particle_tunes
STRING filename = NULL;
long start_pid = -1;
long end_pid = -1;
long pid_interval = 1;
short include_x = 1;
short include_y = 1;
short include_s = 0;
long start_pass = 0;
long segment_length = 0;
&end
- filename — The (incomplete) name of the output file. Recommended value: “%s.nup”.
- start_pid — The starting particle ID of the particles to be included.
- end_pid — The ending particle ID of the particles to be included.
- pid_interval— The interval in particle IDs of the particles to be included.
- include_x— If non-zero, νx is computed.
- include_y— If non-zero, νy is computed.
- include_s— If non-zero, νs is computed.
- start_pass— The pass on which to begin tune analysis.
- segment_length— The length of the segment for tune analysis. A tune value is produced for
every segment_length turns.