- type: Setup command.
- function: This command defines a symmetric bunch pattern.

&symmetricBunchPattern long startBucket = 0 long bunches = 1 double currentPerBucketMA = 0.0 double totalCurrentMA = 0.0 long clearPreviousPatterns = 0 &end.

`startBucket`-- Bucket number of the first bunch in the bunch train. In the case of a symmetric bunch pattern,`startBucket`is the bucket number where one of the bunches is located. Default is 0, the first bucket.`nBunches`-- Number of bunches in the symmetric distribution. If`nBunches`is not a divisor of the RF harmonic number, then a close approximation of the symmtric distribution is generated.`currentPerBucketMA`-- Current in mA for each bunch defined.`totalCurrentMA`-- Total current of all bunches defined in this command. Used to determine the current of individual bunches. Either variables`currentPerBucketMA`or`totalCurrentMA`may be defined. If both are present, variable`currentPerBucketMA`takes precedence.`clearPreviousPatterns`-- If this flag is set to 1, then bunch patterns defined in previous`symmetricBunchPattern`or`generalBunchPattern`are cleared before setting the bunches of this namelist command.

Randy Flood 2006-11-06