pCentral and average of p
Posted: 14 Jun 2016, 09:42
Hello everybody,
I am confused about an observation concerning p and pCentral for an electron bunch tracked in a ring including synchrotron radiation and rf cavities.
I looked at the p column of WATCH elements in "coordinate" mode and recognized that its average over all turns is not equal to pCentral (e.g. read from the same file). Do I misinterpret the meaning of the p column?
The deviation is about 0.6 at pCentral about 6000 (about 0.3MeV at 3GeV). The rf cavities are set up with rf_setup and the beam is stable. The deviation does not depend on the number of turns, which is large compared to the synchrotron oscillation period.
Many thanks in advance!
I am confused about an observation concerning p and pCentral for an electron bunch tracked in a ring including synchrotron radiation and rf cavities.
I looked at the p column of WATCH elements in "coordinate" mode and recognized that its average over all turns is not equal to pCentral (e.g. read from the same file). Do I misinterpret the meaning of the p column?
The deviation is about 0.6 at pCentral about 6000 (about 0.3MeV at 3GeV). The rf cavities are set up with rf_setup and the beam is stable. The deviation does not depend on the number of turns, which is large compared to the synchrotron oscillation period.
Many thanks in advance!